149 results on '"Chen, Mei"'
Search Results
2. Clinical significance of cytogenetic and molecular genetic abnormalities in 634 Chinese patients with myelodysplastic syndromes
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Weilai Xu, Xuefen Yan, Peipei Lin, Jie Jin, Haiyang Yang, Xinping Zhou, Lu Wang, Chen Mei, Liya Ma, Wenli Yang, Hongyan Tong, Yingwan Luo, Chenxi Lu, Gaixiang Xu, Li Ye, Yanling Ren, and Lingxu Jiang
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0301 basic medicine ,Neuroblastoma RAS viral oncogene homolog ,Male ,Cancer Research ,DNA Mutational Analysis ,Trisomy ,genetic mutations ,Trisomy 8 ,Gastroenterology ,0302 clinical medicine ,Bone Marrow ,RC254-282 ,Original Research ,Aged, 80 and over ,education.field_of_study ,Age Factors ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,Middle Aged ,Prognosis ,myelodysplastic syndromes ,Phenotype ,Oncology ,030220 oncology & carcinogenesis ,Female ,Chromosomes, Human, Pair 8 ,Adult ,medicine.medical_specialty ,China ,IDH1 ,Population ,IDH2 ,Disease-Free Survival ,03 medical and health sciences ,Young Adult ,Sex Factors ,trisomy 8 ,Internal medicine ,Complex Karyotype ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Clinical significance ,education ,Aged ,Retrospective Studies ,Chromosome Aberrations ,business.industry ,Myelodysplastic syndromes ,Clinical Cancer Research ,medicine.disease ,Genes, p53 ,karyotype ,030104 developmental biology ,Multivariate Analysis ,Mutation ,business ,Blast Crisis - Abstract
Purpose To explore the relevance of cytogenetic or molecular genetic abnormalities to clinical variables, including clinical and laboratory characteristics and prognosis in Chinese patients with myelodysplastic syndromes (MDS). Methods A total of 634 consecutive patients diagnosed with MDS at The First Affiliated Hospital, Zhejiang University School of Medicine from June 2008 to May 2018 were retrospectively included in this study. All patients had evaluable cytogenetic analysis, and 425 patients had MDS‐related mutations sequencing. Results 38.6% of patients displayed abnormal karyotypes. The most common cytogenetic abnormality was +8 (31%). Sole +8 was related to female (p = 0.002), hemoglobin >10 g/dL (p = 0.03), and, This study aimed to explore the relevance of cytogenetic or molecular genetic abnormalities to clinical variables, including clinical and laboratory characteristics and prognosis in patients with myelodysplastic syndromes (MDS) and showed that cytogenetic changes had a potential correlation with molecular genetic abnormalities and both had significant influence on the prognosis of MDS.
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- 2021
3. Real‐world data of chronic myelomonocytic leukemia: A chinese single‐center retrospective study
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Weilai Xu, Peipei Lin, Lingxu Jiang, Yanlin Ren, Gaixiang Xu, Li Ye, Xinping Zhou, Jie Jin, Chenxi Lu, Chen Mei, Liya Ma, Hongyan Tong, Wenli Yang, and Yingwan Luo
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0301 basic medicine ,Cancer Research ,Time Factors ,medicine.medical_treatment ,chronic myelomonocytic leukemia ,Hematopoietic stem cell transplantation ,Single Center ,chemotherapy ,Gastroenterology ,0302 clinical medicine ,RC254-282 ,Original Research ,Aged, 80 and over ,Univariate analysis ,hypomethylating agents ,Hematopoietic Stem Cell Transplantation ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,Leukemia, Myelomonocytic, Chronic ,Middle Aged ,Treatment Outcome ,Oncology ,030220 oncology & carcinogenesis ,Adult ,Risk ,medicine.medical_specialty ,China ,overall survival ,Chronic myelomonocytic leukemia ,Antineoplastic Agents ,overall response rate ,03 medical and health sciences ,Young Adult ,Monocytosis ,Internal medicine ,medicine ,Humans ,Transplantation, Homologous ,Radiology, Nuclear Medicine and imaging ,Aged ,Retrospective Studies ,Chemotherapy ,business.industry ,leukemia‐free survival ,Clinical Cancer Research ,Retrospective cohort study ,medicine.disease ,030104 developmental biology ,Multivariate Analysis ,business ,Rare disease - Abstract
Chronic myelomonocytic leukemia (CMML) is a rare disease of elderly people characterized by the presence of sustained peripheral blood monocytosis, overlapping features of myeloproliferation, and myelodysplasia. We present a large retrospective study of 156 CMML patients in China. Mean age at diagnosis was 68 years old (range 23‐91). According to the CMML‐specific prognostic scoring system (CPSS), 10 patients (8.3%) were low risk, 27 patients (22.5%) were intermediate‐1 risk, 72 patients (60%) were intermediate‐2 risk, and 11 patients (9.2%) were high risk. A total of 90 patients (57.7%) received hypomethylating agents (HMAs) treatment, 19 patients (12.2%) received chemotherapy and 47 patients (30.1%) received the best supportive care. Seventeen patients (10.9%) underwent allogeneic hematopoietic stem cell transplantation (allo‐SCT) after HMAs treatment or chemotherapy. With a median follow‐up of 35.3 months, overall response rate (ORR) was 69.5% in the HMAs ± chemotherapy group, 79.5% in the HMAs monotherapy group, 60.0% in the HMAs + chemotherapy group, and 37.5% in the chemotherapy group. HMAs monotherapy group had prolonged OS compared with the chemotherapy group (23.57 months vs. 11.73 months; p = 0.035). Patients who achieved ORR had prolonged OS (25.83 months vs. 8.00 months; p, Our retrospective study showed an advantage of HMAs therapy in CMML with an overall response rate of 65.9%‐79.5% compared with chemotherapy. The patients who respond to HMAs treatment have increased survival benefit compared to those who did not respond to HMAs treatment. HMAs monotherapy group had prolonged OS than the chemotherapy group.
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- 2021
4. Dynamic Changes of Fetal-Derived Hypermethylated RASSF1A and Septin 9 Sequences in Maternal Plasma
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Shuai Zhou, Qiu-Ping Chen, Guo-Cheng Liu, Li Zhang, Wei-ping Zhou, Wen Lei, Chen-Mei-Yi Wang, Liang Zhang, and Hua Deng
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Adult ,0301 basic medicine ,Placenta ,Prenatal diagnosis ,Andrology ,03 medical and health sciences ,Fetus ,0302 clinical medicine ,Pregnancy ,medicine ,Humans ,Epigenetics ,030219 obstetrics & reproductive medicine ,business.industry ,Tumor Suppressor Proteins ,Obstetrics and Gynecology ,Methylation ,DNA Methylation ,medicine.disease ,030104 developmental biology ,medicine.anatomical_structure ,Cell-free fetal DNA ,DNA methylation ,Female ,business ,Septins - Abstract
DNA methylation has a tissue-specific feature, and placenta has distinct methylation patterns from peripheral blood cells. Although fetal/placental-derived cell free DNA (cfDNA) in the maternal blood has been reported in recent decades, systematic exploration of dynamic changes of the placental epigenetic signatures across gestation is lacking. The primary goal of this study was to characterize prenatal and postnatal methylation levels of placental-sourced RASSF1A and Septin 9 sequences in maternal plasma. Here, we used a quantitative methylation-sensitive PCR (qMS-PCR) assay to check the methylation status of RASSF1A and Septin 9 in placental tissues of pregnant women and plasma samples from non-pregnant individuals. Then, we examined the methylation levels of the two targets in maternal plasma from expectant women at different gestational ages and postdelivery. Hypermethylated RASSF1A and Septin 9 were identified in placental samples but undetectable in peripheral blood of healthy non-pregnant women. Further, hypermethylated RASSF1A sequence was found in all three trimesters of pregnancy except for early gestation (8 weeks). Moreover, methylation scores of the two targets increased as pregnancy progressed. In addition, hypermethylated RASSF1A sequence was detectable in maternal plasma from 12 h (one case) to 24 h postdelivery (three cases) in 18 pregnant women. Our data on the variation of fetal-sourced methylated RASSF1A levels in maternal plasma in relation to gestational age provide a useful basis for improving the reliability of the methylation assay for non-invasive prenatal diagnosis (NIPD) in clinical practice.
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- 2021
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5. Lower-dose decitabine improves clinical response compared with best supportive care in lower-risk MDS patients: a prospective, multicenter phase 2 study
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Hui Zeng, Juying Wei, Yanling Ren, Liya Ma, Xinping Zhou, Weilai Xu, Hongyan Tong, Chen Mei, Huifang Jiang, Li Ye, and Liming Zhang
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medicine.medical_specialty ,business.industry ,Myelodysplastic syndromes ,Phases of clinical research ,Decitabine ,Gene mutation ,Lower risk ,medicine.disease ,myelodysplastic syndromes ,Thalidomide ,03 medical and health sciences ,lower risk ,0302 clinical medicine ,Oncology ,hypomethylating ,030220 oncology & carcinogenesis ,Internal medicine ,Medicine ,business ,Adverse effect ,Research Paper ,030215 immunology ,medicine.drug ,Lenalidomide - Abstract
Purpose: To explore the efficacy and safety of lower-dose decitabine in patients with lower-risk MDS, a prospective multicenter phase II study was conducted to compare decitabine with the best supportive care (BSC). Methods: Patients diagnosed with lower-risk MDS from September 2013 to August 2018 were assigned to the decitabine group or the BSC group. Decitabine (12 mg/m2/day) was administered over 1 hour/day for 5 consecutive days in a 4-week cycle. BSC, including growth factors, transfusion, thalidomide, lenalidomide, and immunosuppressive agents were given consecutively. The endpoints included the proportion of patients who achieved overall response (OR) in the first 2 or 3 courses, event-free survival (EFS), and overall survival (OS). Results: A total of recruited 82 patients were analyzed. In the decitabine group, 65.9% (27/41) achieved OR after 2 or 3 cycles of treatment, compared with 22.0% (9/41) in the BSC group (p
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- 2021
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6. Diagnosis and treatment recommendations for pediatric respiratory infection caused by the 2019 novel coronavirus
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Wei Ze Xu, Qiang Shu, Chen Mei Zhang, Zhimin Chen, Yuanyuan Zhang, Fu Bang Li, Jun Fen Fu, Ying Hu Chen, Tianlin Wang, Sheng Ye, Zi Hao Yang, Lan Fang Tang, Ru Lin, Ying Shuo Wang, Tian Ming Yuan, Wei Wang, and Chun Zhen Hua
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Pediatrics ,medicine.medical_specialty ,Pneumonia, Viral ,medicine.disease_cause ,03 medical and health sciences ,0302 clinical medicine ,030225 pediatrics ,Pandemic ,Pediatric surgery ,medicine ,Humans ,Pediatrics, Perinatology, and Child Health ,030212 general & internal medicine ,Child ,Pandemics ,Respiratory Tract Infections ,Coronavirus ,Respiratory tract infections ,business.industry ,COVID-19 ,Respiratory infection ,medicine.disease ,Pneumonia ,Clinical research ,Practice Guidelines as Topic ,Pediatrics, Perinatology and Child Health ,Age of onset ,Coronavirus Infections ,business - Abstract
Since December 2019, an epidemic caused by novel coronavirus (2019-nCoV) infection has occurred unexpectedly in China. As of 8 pm, 31 January 2020, more than 20 pediatric cases have been reported in China. Of these cases, ten patients were identified in Zhejiang Province, with an age of onset ranging from 112 days to 17 years. Following the latest National recommendations for diagnosis and treatment of pneumonia caused by 2019-nCoV (the 4th edition) and current status of clinical practice in Zhejiang Province, recommendations for the diagnosis and treatment of respiratory infection caused by 2019-nCoV for children were drafted by the National Clinical Research Center for Child Health, the National Children's Regional Medical Center, Children's Hospital, Zhejiang University School of Medicine to further standardize the protocol for diagnosis and treatment of respiratory infection in children caused by 2019-nCoV.
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- 2020
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7. Entropy Evaluation Method for Sandstone Uranium Reservoir Characteristics Based on Convex Hull Search
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Ming-Tao Jia, Kang He, and Chen Mei-Fang
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Convex hull ,Mathematical optimization ,reservoir homogeneity and continuity ,General Computer Science ,Computer science ,0208 environmental biotechnology ,Point cloud ,chemistry.chemical_element ,Probability density function ,02 engineering and technology ,010502 geochemistry & geophysics ,01 natural sciences ,Engineering optimization ,Entropy (information theory) ,General Materials Science ,Spatial analysis ,0105 earth and related environmental sciences ,multiple-point density function ,business.industry ,General Engineering ,Uranium ,Automation ,020801 environmental engineering ,chemistry ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,spatial information entropy ,business ,lcsh:TK1-9971 ,Sandstone-hosted uranium deposits ,convex hull search - Abstract
The continuity and homogeneity of sandstone uranium deposits are inherent characteristics that affect in situ leaching performance indexes and have important guiding effects on the optimization of mining design. In this work, we propose a spatial information entropy calculation method based on a convex hull search strategy to quantitatively evaluate the geological characteristics of uranium deposits. We use the 3-D block model of sandstone-hosted uranium deposits as hard data. First, we use the Alpha-Shapes algorithm to calculate the convex hull of the space area where various types of unit blocks are located. Second, we formulate a suitable multi-point configuration based on the convex hull size. Then, we use the multi-point density function. Scanning the convex hull point cloud establishes a probability density function to calculate the local information entropy of various sub-regions. Finally, the local spatial information entropy is aggregated using addition and multiplication to obtain the joint spatial information entropy of the entire evaluation area. A series of parameter sensitivity and performance analysis experiments prove the stability of the method and the accuracy of the quantitative and homogeneous evaluations of the complex geological conditions. In order to solve the problem of the difference between the designed production capacity and actual production capacity of a uranium deposit, we use a new method to evaluate the homogeneity and continuity of the lithology and grade of the deposit. The new method and evaluation conclusions can be used for the automation and understanding of future engineering optimization processes.
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- 2020
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8. Risk Factors of Difficult Pharyngeal Accidental Fishbones Ingestion
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Hui-Ju Chen, Wei-Hua Wang, Yi-Bo Huang, Dong-Dong Ren, Ji-Feng Zhang, Haitao Wu, Chen-Mei Xu, Qiang Du, Hua-Peng Yu, Qin Sun, Pei-Jie He, Hua Hu, Yu-Fang Liang, Ru Zhang, Jun Shao, Fan Zhang, Chun-Li Gao, and Yong Shi
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medicine.medical_specialty ,medicine.anatomical_structure ,Otorhinolaryngology ,business.industry ,Throat ,Accidental ,Medicine ,Ingestion ,business ,Dermatology ,Nose - Abstract
Objective: Accidental pharyngeal fishbone ingestion is a common complaint in ear, nose, and throat clinics. Approximately two-thirds of the accidentally ingested fishbones can be removed using tongue depressors and indirect laryngoscopy. However, the remaining third is challenging to identify and remove using these methods. These difficult fishbones require identification and removal via more advanced approaches. Video-guided laryngoscope is used to deal with difficult fishbones in our center. This study aimed to explore the risk factors for difficult fishbones. Methods: A prospective study was performed at a teaching hospital on 2080 patients. Univariate and multivariate analyses were performed to identify the risk factors. Results: The common fishbone locations were the tonsils (39.8%; defined as STEP-I), tongue base (37.1%), vallecula (13.3%; STEP-II), and hypopharynx (9.8%; STEP-III). With increasing STEP level, the ratio of difficult fishbones correspondingly increased (Z = 13.919, P < .001), and the proportions were 21.1%, 41.9%, and 70% in STEP-I, II, and III, respectively. In particular, fishbones in STEP-III (vs STEP-I) had a higher risk of difficult fishbones (odds ratio [OR]: 11.573, 95% CI: 7.987-16.769). Complaints of neck pain (yes vs no), foreign body sensation (yes vs no), and shorter length of fishbones always had a lower risk of difficult fishbones (OR: 0.455, 95% CI: 0.367-0.564; OR: 0.284, 95% CI: 0.191-0.422; OR: 0.727, 95% CI: 0.622-0.85). Missing teeth (yes vs no), swallowing behavior after fishbone ingestion (yes vs no), and male patients (vs female) had a higher risk of difficult fishbones (OR: 1.9, 95% CI: 1.47-2.456; OR: 1.631, 95% CI: 1.293-2.059; OR: 1.278, 95% CI: 1.047-1.56). Conclusions: Neck pain, foreign body sensation, fishbone length, patient age and sex, tooth status, and swallowing behavior after fishbone ingestion are independent risk factors for difficult fishbones.
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- 2021
9. Internet of Things Applied to Bicycle Power Generation System
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Chen Mei-Yung, Guo-Wei Gao, Wen-Hau Jian, and Meng-Chien Wu
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Ethernet ,Transmission (telecommunications) ,Gateway (telecommunications) ,Computer science ,business.industry ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,Wireless ,Cloud computing ,Electricity ,business ,Wireless sensor network ,Generator (mathematics) ,Computer network - Abstract
This paper is an application of the Internet of Things in campus power generation system. The electricity generated by people riding bicycles can be regarded as a kind of green energy generation. Fitness bikes are set up at every point on the campus. Each fitness bike is equipped with a generator. The development board will be connected to the generator. The generator is equipped with voltage and current sensors. LoRa modules are installed on every fitness bike on campus. These nodes will send the data to the LoRa Gateway of each campus through wireless transmission, and finally the LoRa Gateway will store the data on the cloud server through Ethernet wired transmission.
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- 2021
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10. Mutation status and burden can improve prognostic prediction of patients with lower‐risk myelodysplastic syndromes
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Lu Wang, Li Ye, Weilai Xu, Haiyang Yang, Chenxi Lu, Hua Zhang, Jie Jin, Lingxu Jiang, Chuying Shen, Xinping Zhou, Yanling Ren, Shuanghong Zhu, Wenli Yang, Yingwan Luo, Chen Mei, Liya Ma, and Hongyan Tong
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Adult ,Male ,0301 basic medicine ,Cancer Research ,medicine.medical_specialty ,Adolescent ,Prognostic prediction ,mutation status ,Favorable prognosis ,Lower risk ,Gastroenterology ,IDH2 ,lower‐risk myelodysplastic syndromes ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Gene Frequency ,Clinical Research ,Internal medicine ,medicine ,Humans ,Gene Regulatory Networks ,Aged ,Aged, 80 and over ,mutation burden ,business.industry ,Proportional hazards model ,Myelodysplastic syndromes ,variant allele frequency ,High-Throughput Nucleotide Sequencing ,Original Articles ,Sequence Analysis, DNA ,General Medicine ,Middle Aged ,Prognosis ,medicine.disease ,Survival Analysis ,030104 developmental biology ,Oncology ,International Prognostic Scoring System ,Myelodysplastic Syndromes ,030220 oncology & carcinogenesis ,Mutation ,Mutation (genetic algorithm) ,Original Article ,Female ,business - Abstract
Patients with lower‐risk myelodysplastic syndromes (LR‐MDS) as defined by the International Prognostic Scoring System (IPSS) have more favorable prognosis in general, but significant inter‐individual heterogeneity exists. In this study, we examined the molecular profile of 15 MDS‐relevant genes in 159 patients with LR‐MDS using next‐generation sequencing. In univariate COX regression, shorter overall survival (OS) was associated with mutation status of ASXL1 (P = .001), RUNX1 (P = .031), EZH2 (P = .049), TP53 (P = .016), SRSF2 (P = .046), JAK2 (P = .040), and IDH2 (P = .035). We also found significantly shorter OS in patients with an adjusted TET2 variant allele frequency (VAF) ≥18% versus those with either an adjusted TET2 VAF, Shorter OS was associated with mutation status of ASXL1, EZH2 and JAK2, as well as TET2 VAF ≥18%. A novel prognostic scoring system based on the IPSS and the presence/absence of the four independent mutational factors further stratified LR‐MDS patients into three prognostically different groups. Integration of IPSS with mutation status/burden of certain MDS‐relevant genes may improve the prognostication of patients with LR‐MDS and could help identify those with worse‐than‐expected prognosis for more aggressive treatment.
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- 2019
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11. Decitabine for myelodysplastic syndromes: dose comparison in a real world clinical setting
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Xinping Zhou, Chao Hu, Liya Ma, Hongyan Tong, Huifang Jiang, Li Ye, Yanling Ren, Chen Mei, Jie Jin, Peipei Lin, Yingwan Luo, Weilai Xu, and Fangjing Shi
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Male ,Antimetabolites, Antineoplastic ,Cancer Research ,medicine.medical_specialty ,Refractory anemia ,Decitabine ,Neutropenia ,Lower risk ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Overall survival ,Humans ,Medicine ,Aged ,Retrospective Studies ,Dose-Response Relationship, Drug ,business.industry ,Myelodysplastic syndromes ,Dose comparison ,Hematology ,Middle Aged ,Prognosis ,medicine.disease ,Survival Rate ,Survival benefit ,Oncology ,Myelodysplastic Syndromes ,030220 oncology & carcinogenesis ,Female ,Neoplasm Recurrence, Local ,business ,Follow-Up Studies ,030215 immunology ,medicine.drug - Abstract
We retrospectively studied 133 myelodysplastic syndrome patients receiving decitabine during January 2009 and September 2017. The dose of 15 mg/m2/d (n = 83) and 20 mg/m2/d (n = 50) had comparable overall response rates (ORR) (51.8% vs. 52.00%) and complete remission rate (CRR) (15.66% vs. 22.00%). The 15 mg/m2/d group had a lower incidence of grade 3/4 neutropenia (60.24% vs. 88.00%, p
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- 2019
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12. Emergency department overcrowding: Quality improvement in a Taiwan Medical Center
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Yun-Te Chang, Chen-Mei Hsu, Wang-Chuan Juang, and Li-Lin Liang
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Patient Transfer ,Time Factors ,Quality management ,media_common.quotation_subject ,Taiwan ,Health Services Accessibility ,03 medical and health sciences ,0302 clinical medicine ,Hospital Planning ,Humans ,Medicine ,Bed Occupancy ,media_common ,lcsh:R5-920 ,business.industry ,Emergency department overcrowding ,General Medicine ,Overcrowding ,Length of Stay ,medicine.disease ,Quality Improvement ,Patient Discharge ,Observation duration ,Crowding ,Hospital Bed Capacity ,Turnover ,Sample size determination ,030220 oncology & carcinogenesis ,030211 gastroenterology & hepatology ,Medical emergency ,Emergency Service, Hospital ,lcsh:Medicine (General) ,business ,Welfare ,Hospital accreditation - Abstract
Background/Purpose: Overcrowding of hospital emergency departments (ED) is a worldwide health problem. The Taiwan Joint Commission on Hospital Accreditation has stressed the importance of finding solutions to overcrowding, including, reducing the number of patients with >48 h stay in the ED. Moreover, the Ministry of Health and Welfare aims at transferring non-critical patients to district or regional hospitals. We report the results of our Quality Improvement Project (QIP) on ED overcrowding, especially focusing on reducing length of stay (LOS) in ED. Methods: For QIP, the following 3 action plans were initiated: 1) Changing the choice architecture of patients' willingness to transfer from opt-in to opt-out; 2) increasing the turnover rate of beds and daily monitoring of the number of free beds for boarding ED patients; 3) reevaluation of patients with a LOS of >32 h after the morning shift. Results: Transfer rates increased minimally after implementation of this project, but the sample size was too small to achieve statistical significance. No significant increase was observed in the number of free medical beds, but discharge rates after 12 pm decreased significantly (p 32 h were reevaluated first. After QIP, the proportion of LOSs of >48 h dropped significantly. Changing the choice architecture may require further systemic effort and a longer observation duration. Higher-level administrators will need to formulate a more comprehensive bed management plan to speed up the turnover rate of free inpatient beds. Keywords: Emergency service, Length of stay, Quality improvement
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- 2019
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13. Study on Prevention and Treatment of Autophagy and Cervical HPV Infection by Traditional Chinese Medicine Based on Pathogenesis of 'Syndrome of Dampness-heat Diffusing Downward'
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Xin Zhao, Jiaxue Yang, Chen Mei, Nan Li, Hongli Zhu, Bai Jun, and Anqi Liu
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Pathogenesis ,medicine.anatomical_structure ,business.industry ,Mechanism (biology) ,Autophagy ,Cell ,HPV infection ,Cancer research ,Medicine ,Traditional Chinese medicine ,business ,medicine.disease ,Virus - Abstract
Autophagy is a self-protection mechanism of the body, and also an important physiological process for cells to maintain internal environment stability. Studies have shown that the degree of autophagy damage is positively correlated with the expression of oncogenes, and the expression of oncogenes is closely related to cervical HPV infection, so the control of autophagy ability can interfere with cervical HPV virus infection. Traditional Chinese medicine believes that dampness-heat evil down, can damage and Chong Ren cell. The author believes that autophagy damage and the theory of dampness-heat injection in cervical HPV infection have similar pathogenic mechanism, and explores the prevention and treatment of autophagy and cervical HPV infection based on the theory of traditional Chinese medicine dampness-heat injection, in attempt to provide a new treatment for clinical prevention and treatment.
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- 2021
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14. Intestinal ulcers in a patient with myelodysplastic syndrome: a case report
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Chaohui Yu, Xingyong Wan, Xinping Zhou, Meng Jin, Chen Mei, Hongyan Tong, Yuwei Zhang, Zhe Shen, Lan Li, and Xiaofen Zhang
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Male ,Abdominal pain ,medicine.medical_specialty ,Intestinal ulcers ,Colonoscopy ,Trisomy ,Case Report ,RC799-869 ,Trisomy 8 ,Gastroenterology ,law.invention ,Ileocecal valve ,Capsule endoscopy ,law ,Internal medicine ,medicine ,Humans ,Medical history ,Ulcer ,medicine.diagnostic_test ,business.industry ,Endoscopy ,General Medicine ,Diseases of the digestive system. Gastroenterology ,Middle Aged ,medicine.disease ,Hematochezia ,Intestinal Diseases ,medicine.anatomical_structure ,Myelodysplastic Syndromes ,medicine.symptom ,business ,Myelodysplastic syndrome ,Rare disease - Abstract
Background Trisomy 8 positivity myelodysplastic syndrome with Behçet's disease is rare. Isolated trisomy 8 is a frequent cytogenetic abnormality in the MDS, but the characteristic of trisomy 8 and the association between trisomy 8 positivity myelodysplastic syndrome and Behçet's disease is unclear. Case presentation Here, we reported a 63‐year‐old man, who presented with fever, abdominal pain and hematochezia. Imaging studies revealed bowel wall thickening and mural hyperenhancement of terminal ileum and cecum. Colonoscopy found multiple round ulcers in terminal ileum, ileocecal valve and multiple yellow dotted pseudomembranous attachments throughout the colon. Capsule endoscopy also revealed multiple irregular ulcers in lower ileum. Serum C-reactive protein levels and fecal calprotectin were abnormally high. The clostridium difficile toxin A and B was positive. However, the patient's intestinal ulcers did not resolve after two weeks course of vancomycin. Considered that the patient was diagnosed as MDS-RAEB2 with a karyotype of 47 XX, + 8. And detailed inquiry of medical history revealed epifolliculitis and frequently recurrent oral ulcers 2 months before admission. A diagnosis of trisomy 8 positivity MDS with BD was made. Then he received glucocorticoid along with the 5th course of azacytidine. The follow-up endoscopy showed significantly improved intestinal ulcer 2 months after treatment. we report a rare disease and provide the diagnose and treatment ideas. Conclusions We highlight the challenges and the process of thinking about of the diagnosis. This may provide a new idea for the diagnosis of intestinal ulcers.
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- 2021
15. Decitabine combined with low dose idarubicin and cytarabine (D-IA) followed by allo-HSCT improves acute myeloid leukemia and higher-risk myelodysplastic syndrome patient outcomes: results from a retrospective study
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Xinnong Ye, Liya Ma, Yanling Ren, Hongyan Tong, Chen Mei, Li Ye, Xinping Zhou, Chenxi Lu, Weilai Xu, and Jie Jin
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Oncology ,Cancer Research ,medicine.medical_specialty ,Allo hsct ,Decitabine ,Syndrome patient ,03 medical and health sciences ,0302 clinical medicine ,hemic and lymphatic diseases ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,medicine ,Idarubicin ,Humans ,Retrospective Studies ,business.industry ,Low dose ,Cytarabine ,Hematopoietic Stem Cell Transplantation ,Myeloid leukemia ,Retrospective cohort study ,Hematology ,Leukemia, Myeloid, Acute ,030220 oncology & carcinogenesis ,Myelodysplastic Syndromes ,business ,030215 immunology ,medicine.drug - Abstract
Treatment for acute myeloid leukemia (AML) and high-risk myelodysplastic syndrome (MDS) ineligible for intensive chemotherapy is a major challenge for clinicians. We enrolled 154 patients ineligible for intensive chemotherapy who were prescribed D-IA regimen (decitabine 15-20 mg/m
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- 2021
16. Robust region-of-interest determination based on user attention model through visual rhythm analysis
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Chi, Ming-Chieh, Yeh, Chia-Hung, and Chen, Mei-Juan
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Content analysis (Communication) -- Methods ,Image coding -- Methods ,Coding theory ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
Region-of-interest (ROI) determination is very important for video processing and it is desirable to find a simple method to identify the ROI. Along this direction, this paper investigates a user attention model based on visual rhythm analysis for automatic determination of ROI in a video. The visual rhythm, which is an abstraction of a video, is a thumbnail version of a video by a 2-D image that captures the temporal information of a video sequence. Four sampling lines, including diagonal, anti-diagonal, vertical, and horizontal lines, are employed to obtain four visual rhythm maps in order to analyze the location of the ROI from video data. Via the variation on visual rhythms, object and camera motions can be efficiently distinguished. As for hardware design consideration, the proposed scheme can accurately extract ROI with very low computational complexity for real-time applications. The promising results from the experiments demonstrate that the moving object is effectively and efficiently extracted. Finally, we present a way to use flexible macroblock ordering in combination with ROI determination as a preprocessing step for H.264/AVC video coding, and experimental results show the quality of ROI regions is significantly enhanced. Index Terms--Content analysis, feature extraction, region-of-interest (ROI), user attention, visual rhythm.
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- 2009
17. Therapeutic Potential of Heme Oxygenase-1 in Aneurysmal Diseases
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Chen-Mei Chen, Candra Dwipayana Hamdin, Igor A. Sobenin, Wei-Cheng Jiang, Shaw-Fang Yet, Matthew D. Layne, and Alexander N. Orekhov
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Subarachnoid hemorrhage ,Physiology ,subarachnoid hemorrhage ,Clinical Biochemistry ,Inflammation ,Review ,030204 cardiovascular system & hematology ,medicine.disease_cause ,Bioinformatics ,Biochemistry ,03 medical and health sciences ,0302 clinical medicine ,Aneurysm ,abdominal aortic aneurysm ,medicine.artery ,medicine ,oxidative stress ,cardiovascular diseases ,Molecular Biology ,Aorta ,business.industry ,lcsh:RM1-950 ,heme oxygenase-1 ,Cell Biology ,medicine.disease ,intracranial aneurysm ,Abdominal aortic aneurysm ,Heme oxygenase ,lcsh:Therapeutics. Pharmacology ,inflammation ,medicine.symptom ,Complication ,business ,030217 neurology & neurosurgery ,Oxidative stress - Abstract
Abdominal aortic aneurysm (AAA) and intracranial aneurysm (IA) are serious arterial diseases in the aorta and brain, respectively. AAA and IA are associated with old age in males and females, respectively, and if rupture occurs, they carry high morbidity and mortality. Aneurysmal subarachnoid hemorrhage (SAH) due to IA rupture has a high rate of complication and fatality. Despite these severe clinical outcomes, preventing or treating these devastating diseases remains an unmet medical need. Inflammation and oxidative stress are shared pathologies of these vascular diseases. Therefore, therapeutic strategies have focused on reducing inflammation and reactive oxygen species levels. Interestingly, in response to cellular stress, the inducible heme oxygenase-1 (HO-1) is highly upregulated and protects against tissue injury. HO-1 degrades the prooxidant heme and generates molecules with antioxidative and anti-inflammatory properties, resulting in decreased oxidative stress and inflammation. Therefore, increasing HO-1 activity is an attractive option for therapy. Several HO-1 inducers have been identified and tested in animal models for preventing or alleviating AAA, IA, and SAH. However, clinical trials have shown conflicting results. Further research and the development of highly selective HO-1 regulators may be needed to prevent the initiation and progression of AAA, IA, or SAH.
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- 2020
18. Combined Approach for Short-Term Wind Power Forecasting Considering Meteorological Fluctuation and Feature Extraction
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Peng Lu, Bo Wang, Zhao Jinlong, Ming Pei, Chen Mei, and Lin Ye
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Wind power ,business.industry ,Computer science ,Feature vector ,Feature extraction ,Wavelet transform ,Wind power forecasting ,business ,Cluster analysis ,Numerical weather prediction ,Algorithm ,Physics::Atmospheric and Oceanic Physics ,Wind speed - Abstract
Mining the effective information of numerical weather prediction (NWP) data can improve the accuracy of short-term wind power forecasting (WPF). In this paper, a novel wave-oriented combined forecasting approach for short-term WPF based on wave division (WD), Grey Wolf optimizer (GWO) optimizing the fuzzy C-means cluster (FCM), and Long Short-Term Memory (LSTM), namely WD-GFCM-LSTM model, is proposed to forecast short-term wind power. Firstly, in order to extract fluctuation trend of the wind speed of NWP (WSN), its series is filtered using wavelet transform (WT). Then, the WSN series is divided into a number of waves based on the extreme points, and wave feature vectors are obtained according to wave’s shape feature parameters. Furthermore, the GFCM algorithm is clustered the waves into some groups, and the groups resembling with the future WSN wave series are obtained through the wave matching process. Finally, forecasting wind power for 3 day-ahead is obtained by the trained LSTM model. The results demonstrate that the proposed combination approach can show better performance comparing with the benchmark forecasting approaches.
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- 2020
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19. Efficacy of levetiracetam, fosphenytoin, and valproate for established status epilepticus by age group (ESETT): a double-blind, responsive-adaptive, randomised controlled trial
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James M Chamberlain, Jaideep Kapur, Shlomo Shinnar, Jordan Elm, Maija Holsti, Lynn Babcock, Alex Rogers, William Barsan, James Cloyd, Daniel Lowenstein, Thomas P Bleck, Robin Conwit, Caitlyn Meinzer, Hannah Cock, Nathan B Fountain, Ellen Underwood, Jason T Connor, Robert Silbergleit, Emily Gray, Sonya Gunter, Amy Fansler, Valerie Stevenson, Erin Bengelink, Deneil Harney, Mickie Speers, Joy Black, Natalie Fisher, Donna Harsh, Arthi Ramakrishnan, Lindsey Harris, Nia Bozeman, Aimee Spiteri, Yuko Palesch, Holly Tillman, Wenle Zhao, Qi Pauls, Chris Arnaud, Catherine R. Dillon, Jodie Riley, Teldon Alford, Cassidy Conner, Lisa Coles, Abhi Sathe, Scott Janis, Adam Hartman, Brandy Fureman, Eugen Trinka, David Treiman, David Wright, Jonathan Ratcliff, Alex Hall, Alaina Williams, Harold Simon, Nicholas Stanley, Roger Humphries, Theresa Mims, Joann Short, Elizabeth Jones, Misty Ottman, Nina Gentile, Derek Isenberg, Hannah Reimer, Vernon Sayoc Kalugdan, Claude Hemphill, Debbie Yi Madhok, Jeany Duncan, Dominica Randazzo, James Quinn, Anita Visweswaran, Rosen Mann, Opeolu Adeoye, Jason McMullan, Brandon Foreman, Sara Keegan, Michelle Biros, Brian Driver, Audrey Hendrickson, Jamie Stang, Christopher Lewandowski, Joseph Miller, Kaleem Chaudhry, Shannen Berry, Craig Warden, Rachel Blake, Jennifer NB Cook, Erin Sabolick, Antoine Selman, Katrina Kissman, Monica Moore, J. Stephen Huff, Lea Becker, Jan Claassen, Angela Velazquez, Cristina Falo, Zlatan Coralic, Jackie Grupp-Phelan, Jill Baren, Angela Ellison, Ashley Woodford, Ima Samba, Marlena Kittick, Ralph Riviello, John Massey, Lisa Bonacquisti, Steven Levine, Sergey Motov, Christian Fromm, Rukhsana Hossain, Antonios Likourezos, Illya Pushkar, Thomas Terndrup, Salman Khaliqdina, Michael Hill, Bjorn Peterson, Alexia Terwilliger, Joseph Holm, Kyra Wicklund, Sandi Wewerka, Robert Welch, Claire Pearson, Vijaya Arun Kumar, Farhan Ayaz, Saikat Bhuiyan, Valerie H. Mika, Lola Morgan, Floyd Jones, Lorraine Dishman, Thomas Henry, Ford Erickson, Abbey Staugaitis, Chloe Lawyer, Kathleen Miller, Clif Callaway, Alexandra Urban, Sara DiFiore, Peter Adams, Brian Baum, Jason Nomura, Barbara Davis, Tom Aufderheide, Amanda Emmrich, Melissa Mena, Jacob Labinski, Chinwe Ogedegbe, Diana McCarthy, Arelis Villot-Santiago, Joshua Goldstein, Eric S. Rosenthal, Abigail Cohen, Chen Mei Su, Greg Tirrell, Melissa Howell, Marissa Hendrickson, Dan Nerheim, Eric Jaton, Barbara Biney, Christopher Gibson, Erica Dahlmeier, Katherine (Lamond) Blackburn, Oluwarotimi (Tim) Vaughan-Ogunlusi, Shahriar Zehtabchi, Richard Sinert, Bryce Petty, Scott Youngquist, Margaret Carlson, Nadege Gilles, Sarah (Zelonis) Weingast, Barney Stern, Jennifer Hopp, Virginia Ganley, Joseph Ornato, Christopher Hogan, Alan Payne, Kate Shreve, Peter Dayan, Nathan Kuppermann, Kurt Denninghoff, Rachel Stanley, Richard Ruddy, E. Brooke Lerner, J. Michael Dean, Charles Casper, Lise Nigrovic, Walt Schalick, Doug Nelson, Bobbe Thomas, Pamela Okada, Amanda Lee, Natasha Truesdale, Steven Chan, Mhadhumithaa Naresh, Venita Robinson, Jieun Hwang, Kristi Carlston, Michael Dela Cruz, Toni Harbour, Reena Karki, Daniel M. Cohen, Amy Nowakowski, Cindy Lin, Erin Fisher Kenny, Dale Steele, Lisa H. Merck, Erin Ryan, Kristin Basso, Lesley (Wasilewski) D'Urso, Kathleen Brown, Gina Nauman, Matthew Ledda, Sean Gillen, Vanessa Grant, Cheryl Vance, Daniel K. Nishijima, Kyle Pimenta, Noelle Herzog, Jonathan Bennett, Christine Eisenhart, Danny Thomas, Duke Wagner, Robert W. Hickey, Rose Azrak, Daniel Rubalcava, Juan Mondragon, Victor Gonzalez, Maha Khalil, Kristina Hart, Sara Parker, Angela Lumba-Brown, Kim Quayle, Sri Chinta, Debra Robinson, Maria Kwok, Brooke Peery, Julie Ochs, and Leonor Suarez
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Adult ,Male ,Pediatrics ,medicine.medical_specialty ,Levetiracetam ,Adolescent ,Status epilepticus ,030204 cardiovascular system & hematology ,Article ,law.invention ,Young Adult ,03 medical and health sciences ,Age Distribution ,0302 clinical medicine ,Status Epilepticus ,Randomized controlled trial ,Double-Blind Method ,Fosphenytoin ,law ,medicine ,Humans ,030212 general & internal medicine ,Young adult ,Child ,Stroke ,Aged ,Aged, 80 and over ,Intention-to-treat analysis ,Dose-Response Relationship, Drug ,business.industry ,Valproic Acid ,Age Factors ,Infant ,General Medicine ,Emergency department ,Middle Aged ,medicine.disease ,Child, Preschool ,Phenytoin ,Female ,Anticonvulsants ,medicine.symptom ,business ,medicine.drug - Abstract
Summary Background Benzodiazepine-refractory, or established, status epilepticus is thought to be of similar pathophysiology in children and adults, but differences in underlying aetiology and pharmacodynamics might differentially affect response to therapy. In the Established Status Epilepticus Treatment Trial (ESETT) we compared the efficacy and safety of levetiracetam, fosphenytoin, and valproate in established status epilepticus, and here we describe our results after extending enrolment in children to compare outcomes in three age groups. Methods In this multicentre, double-blind, response-adaptive, randomised controlled trial, we recruited patients from 58 hospital emergency departments across the USA. Patients were eligible for inclusion if they were aged 2 years or older, had been treated for a generalised convulsive seizure of longer than 5 min duration with adequate doses of benzodiazepines, and continued to have persistent or recurrent convulsions in the emergency department for at least 5 min and no more than 30 min after the last dose of benzodiazepine. Patients were randomly assigned in a response-adaptive manner, using Bayesian methods and stratified by age group ( 65 years), to levetiracetam, fosphenytoin, or valproate. All patients, investigators, study staff, and pharmacists were masked to treatment allocation. The primary outcome was absence of clinically apparent seizures with improved consciousness and without additional antiseizure medication at 1 h from start of drug infusion. The primary safety outcome was life-threatening hypotension or cardiac arrhythmia. The efficacy and safety outcomes were analysed by intention to treat. This study is registered in ClinicalTrials.gov , NCT01960075 . Findings Between Nov 3, 2015, and Dec 29, 2018, we enrolled 478 patients and 462 unique patients were included: 225 children (aged 65 years). 175 (38%) patients were randomly assigned to levetiracetam, 142 (31%) to fosphenyltoin, and 145 (31%) were to valproate. Baseline characteristics were balanced across treatments within age groups. The primary efficacy outcome was met in those treated with levetiracetam for 52% (95% credible interval 41–62) of children, 44% (33–55) of adults, and 37% (19–59) of older adults; with fosphenytoin in 49% (38–61) of children, 46% (34–59) of adults, and 35% (17–59) of older adults; and with valproate in 52% (41–63) of children, 46% (34–58) of adults, and 47% (25–70) of older adults. No differences were detected in efficacy or primary safety outcome by drug within each age group. With the exception of endotracheal intubation in children, secondary safety outcomes did not significantly differ by drug within each age group. Interpretation Children, adults, and older adults with established status epilepticus respond similarly to levetiracetam, fosphenytoin, and valproate, with treatment success in approximately half of patients. Any of the three drugs can be considered as a potential first-choice, second-line drug for benzodiazepine-refractory status epilepticus. Funding National Institute of Neurological Disorders and Stroke, National Institutes of Health.
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- 2020
20. Epigenetic priming with decitabine followed by low dose idarubicin and cytarabine in acute myeloid leukemia evolving from myelodysplastic syndromes and higher-risk myelodysplastic syndromes: a prospective multicenter single-arm trial
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Yanling Ren, Jin Zhang, Liya Ma, Juying Wei, Hongyan Tong, Jianping Lan, Chenxi Lu, Ying Lu, Chen Mei, Weilai Xu, Kongfei Li, Li Ye, Xinping Zhou, Jie Jin, Yue-feng Zhang, Yuemin Kuang, and Shengyun Lin
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Oncology ,Adult ,Male ,Cancer Research ,medicine.medical_specialty ,Myeloid ,Decitabine ,Epigenesis, Genetic ,Clonal Evolution ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,hemic and lymphatic diseases ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,medicine ,Biomarkers, Tumor ,Idarubicin ,Humans ,Prospective Studies ,Aged ,Anemia, Refractory, with Excess of Blasts ,business.industry ,Myelodysplastic syndromes ,Cytarabine ,Myeloid leukemia ,High-Throughput Nucleotide Sequencing ,Hematology ,General Medicine ,Middle Aged ,medicine.disease ,Prognosis ,Gene Expression Regulation, Neoplastic ,Survival Rate ,Regimen ,Leukemia, Myeloid, Acute ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Myelodysplastic Syndromes ,Absolute neutrophil count ,Female ,business ,030215 immunology ,medicine.drug ,Follow-Up Studies - Abstract
Patients with acute myeloid leukemia (AML) evolving from myelodysplastic syndrome (MDS) or higher-risk MDS have limited treatment options and poor prognosis. Our previous single-center study of decitabine followed by low dose idarubicin and cytarabine (D-IA) in patients with myeloid neoplasms showed promising primary results. We therefore conducted a multicenter study of D-IA regimen in AML evolving from MDS and higher-risk MDS. Patients with AML evolving from MDS or refractory anemia with excess blasts type 2 (RAEB-2) (based on the 2008 WHO classification) were included. The D-IA regimen (decitabine, 20 mg/m2 daily, days 1 to 3; idarubicin, 6 mg/m2 daily, days 4 to 6; cytarabine 25 mg/m2 every 12 hours, days 4 to 8; granulocyte colony stimulating factor [G-CSF], 5 μg/kg, from day 4 until neutrophil count increased to 1.0 × 109 /L) was administered as induction chemotherapy. Seventy-one patients were enrolled and treated, among whom 44 (62.0%) had AML evolving from MDS and 27 (38.0%) had RAEB-2. Twenty-eight (63.6%) AML patients achieved complete remission (CR) or complete remission with incomplete blood count recovery (CRi): 14 (31.8%) patients had CR and 14 (31.8%) had CRi. Six (22.2%) MDS patients had CR and 15 (55.6%) had marrow complete remission. The median overall survival (OS) was 22.4 months for the entire group, with a median OS of 24.2 months for AML and 20.0 months for MDS subgroup. No early death occurred. In conclusion, the D-IA regimen was effective and well tolerated, representing an alternative option for patients with AML evolving from MDS or MDS subtype RAEB-2.
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- 2020
21. Analysis of the Effect of Nine Consecutive Years’ Intensive Management and Number of Times Achieving the Target Control on Endpoint Events in T2DM Patients in Sanlitun Community Health Service Center in Beijing
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Hong-Wei Chen, Zhi-Yun Deng, Yu-Zhe Lu, Gang Wan, Jian-Hua Li, Jing Li, Xue-Lian Zhang, Mao-Xia Yang, Shen-Yuan Yuan, Yu-Qin Niu, Su-Ping Wei, Zhi-Na He, Cheng-Yu Su, Wen-Xia Yang, Yan Fu, Guan-Xiu Liang, Shuo Cao, Xia Lu, Hua Fan, Chen-Mei Zhao, Xue-Hui Yu, and Xue-Li Cui
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medicine.medical_specialty ,Article Subject ,Endocrine and Autonomic Systems ,business.industry ,Endocrinology, Diabetes and Metabolism ,Incidence (epidemiology) ,Diabetic retinopathy ,Type 2 diabetes ,030204 cardiovascular system & hematology ,medicine.disease ,RC648-665 ,Diseases of the endocrine glands. Clinical endocrinology ,Diabetic nephropathy ,03 medical and health sciences ,Stenosis ,0302 clinical medicine ,Endocrinology ,Blood pressure ,Diabetes mellitus ,Internal medicine ,medicine ,030212 general & internal medicine ,business ,Survival analysis ,Research Article - Abstract
Objective. To investigate the effect of intensive management and achieving the target control more than 3 times on endpoint events during 9 consecutive years’ annual assessment in type 2 diabetes (T2DM) patients in the Sanlitun Community Health Service Center in Beijing, including blood glucose, blood pressure, lipids profiles, and the joint target control. Methods. In Beijing Community Diabetes Study (BCDS), 224 patients with T2DM from the Sanlitun Community Health Service Center were enrolled in 2008. All patients were randomly assigned to the intensive management group (n = 113) and the standard management group (n = 111). All patients were followed up for nine consecutive years from January 2009 to December 2017. Systolic blood pressure (SBP), diastolic blood pressure (DBP), glycosylated hemoglobin (HbA1c), and low-density lipoprotein cholesterol (LDL-C) were detected as the main indexes, and the endpoint events were also carried out at the same time. The endpoint events were analyzed by using survival analysis (Kaplan–Meier method) based on management grouping and whether achieving the target control more than 3 times or not. Results. During the nine-year follow-up, the abscission number was 35 (14.29%), among which 14 (12.39%) was in the intensive management group and 21 (18.92%) was in the standard management group. The incidence of diabetic retinopathy (6 cases, 5.41%) and diabetic nephropathy (13 cases, 11.71%) in the standard management group was significantly higher than that in the intensive management group (1 case, 0.88%; 5 cases, 4.42%), respectively (P<0.05). However, there were no significant differences on the other endpoint events between the two groups (P>0.05). All-cause death was 23 cases, in which patients who achieved the target control (HbA1c and LDL-C) and the joint target control more than 3 times were significantly lower than that of less than 3 times (P<0.05). As far as death caused by cardiovascular events, cerebrovascular events, and newly onset coronary heart disease are concerned, there were no significant differences on the aforementioned endpoint events between the two groups based on target control more than 3 times or not (P>0.05). There were less incidence of new onset cerebrovascular events, stenosis or occlusion of large arteries, and diabetic microvascular complications in patients who achieved target control (HbA1c and LDL-C) and the joint target control more than 3 times than those with target control less than 3 times (P<0.05). Conclusions. The intensive management can effectively reduce the occurrence of microvascular complications. The incidence of all-cause death and the other endpoint events decreased in T2DM patients who achieved the joint target control more than 3 times during the nine-year management, which improved survival time and life quality. This trial is registered with ChiCTR-TRC-13003978 and ChiCTR-OOC-15006090.
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- 2020
22. Stability of the 2-D Givone-Roesser model with periodic coefficients
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Bose, Tamal, Chen, Mei-Qin, and Thamvichai, Ratchaneekorn
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Electric filters -- Design and construction ,Circuit design -- Analysis ,Circuit designer ,Integrated circuit design ,Business ,Computers and office automation industries ,Electronics ,Electronics and electrical industries - Abstract
The stability of two-dimensional (2-D) periodically shift varying (PSV) filters formulated as the Givone-Roesser (GR) model is studied. The applications of these filters include processing video signals with cyclostationary noise, image and video scrambling, and design of multiplierless filters. The GR model is embedded into the second model of Fornasini-Marchesisni and the stability of this embedded model is then studied. Several sufficient conditions and one necessary condition are derived for stability. These conditions are compared for their relative computational complexities and their restrictions. Based on the computational complexities of implementing these conditions, an algorithm is proposed to determine the stability of a given 2-D PSV system. Several examples are given to illustrate the results. Index Terms--2-D Givone-Roesser model, 2-D periodically shift varying filters, stability.
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- 2007
23. Clinical and biological characteristics of acute myeloid leukemia with 20–29% blasts: a retrospective single-center study
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Peipei Lin, Xinping Zhou, Liping Mao, Weilai Xu, Chen Mei, Juying Wei, Yanling Ren, Chenxi Lu, Yingwan Luo, Jie Jin, Li Ye, Wenjuan Yu, Haiyang Yang, Liya Ma, and Hongyan Tong
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Adult ,Male ,Oncology ,Cancer Research ,medicine.medical_specialty ,Kaplan-Meier Estimate ,Single Center ,03 medical and health sciences ,0302 clinical medicine ,Gene Frequency ,Bone Marrow ,hemic and lymphatic diseases ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,Biomarkers, Tumor ,Humans ,Medicine ,neoplasms ,Aged ,business.industry ,Myelodysplastic syndromes ,Disease Management ,Myeloid leukemia ,Hematology ,Middle Aged ,Prognosis ,medicine.disease ,humanities ,body regions ,Leukemia, Myeloid, Acute ,medicine.anatomical_structure ,Myelodysplastic Syndromes ,030220 oncology & carcinogenesis ,Mutation ,Disease Progression ,Female ,Disease Susceptibility ,Bone marrow ,Blast Crisis ,business ,030215 immunology - Abstract
It is controversial whether acute myeloid leukemia (AML) patients with 20-29% bone marrow (BM) blasts should be considered AML or myelodysplastic syndromes (MDS). We retrospectively studied 382 patients, including 108 AML with 20-29% BM blasts (AML20-29), 210 AML with ≥30% BM blasts (AML ≥ 30), and 64 MDS with 10-19% BM blasts (MDS-EB2). We found that AML20-29 were more similar to MDS-EB2 in terms of advanced age, less blood count, the increased presence of poor-risk cytogenetics. The frequency of mutated genes in AML20-29 had both the characters of AML and MDS. Median overall survival of AML20-29 and MDS-EB2 were similar and shorter than those of AML ≥ 30 (p = .045). Multivariate analysis showed inferior survival with increased age, low platelet count and FLT3 mutations. Our findings suggest that AML20-29 have clinical features more similar to MDS than AML.
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- 2018
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24. Perspectives of patients with non-insulin-treated type 2 diabetes on self-monitoring of blood glucose: A qualitative study
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Li-Chen Hung, Chen-Mei Chen, Mei Chang Yeh, and Yang-Lin Chen
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Adult ,Blood Glucose ,Male ,medicine.medical_specialty ,medicine.medical_treatment ,Taiwan ,030209 endocrinology & metabolism ,Type 2 diabetes ,03 medical and health sciences ,0302 clinical medicine ,Diabetes mellitus ,Humans ,Medicine ,030212 general & internal medicine ,Medical diagnosis ,Qualitative Research ,General Nursing ,Aged ,Aged, 80 and over ,Health professionals ,business.industry ,Blood Glucose Self-Monitoring ,Insulin ,Cognition ,General Medicine ,Middle Aged ,medicine.disease ,Diabetes Mellitus, Type 2 ,Emergency medicine ,Self-monitoring ,Female ,business ,Attitude to Health ,Qualitative research - Abstract
Aims and objectives To explore experiences of self-monitoring of blood glucose among patients with non-insulin-treated type 2 diabetes. Background Self-monitoring of blood glucose is essential to diabetes care and facilitates glycaemic control. Patients' perspectives of self-monitoring of blood glucose have seldom been discussed in the literature, and engagement in self-monitoring of blood glucose is consistently low. Design The descriptive phenomenological method was used. Methods Purposive sampling was conducted to recruit participants from the endocrinology departments of medical institutions in Taiwan based on the following criteria: (i) having a medical diagnosis of type 2 diabetes, (ii) not being treated with insulin, (iii) having engaged in self-monitoring of blood glucose at least once within the preceding 6 months, (iv) being at least 20 years old and (v) not having any major mental or cognitive disorders. Data were collected in outpatient consultation rooms, the participants' homes and other settings where the participants felt secure and comfortable. In-depth interviews were conducted to collect data from 16 patients with diabetes. Results The participants perceived that lifestyle affected blood glucose levels and did not know how to handle high or low blood glucose levels. Their willingness to continue self-monitoring of blood glucose depended on whether healthcare professionals checked or discussed their blood glucose levels with them. Conclusions The patients' knowledge regarding blood glucose variation and healthcare professionals' attitudes affected the patients' self-monitoring of blood glucose behaviours. The empirical findings illustrated self-monitoring of blood glucose experiences and recommended that healthcare professionals' closely attend to patients' requirements and responses to diabetes and incorporate the self-monitoring of blood glucose into therapy plans. Relevance to clinical practice Healthcare professionals should reinforce patients' knowledge on appropriate responses to high and low blood glucose levels, intervene appropriately, discuss self-monitoring of blood glucose results with patients and track these results.
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- 2018
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25. Isocitrate dehydrogenase 2 mutations correlate with leukemic transformation and are predicted by 2-hydroxyglutarate in myelodysplastic syndromes
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Jie Jin, Hua Zhang, Shuanghong Zhu, Haiyang Yang, Liya Ma, Zhengping Zhuang, Hongyan Tong, Weilai Xu, Xinping Zhou, Peipei Lin, Yingwan Luo, Chen Mei, Chao Hu, Dominic Maggio, Jinghan Wang, Li Ye, and Yanling Ren
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Adult ,Male ,0301 basic medicine ,Cancer Research ,medicine.medical_specialty ,IDH1 ,Adolescent ,medicine.disease_cause ,IDH2 ,Cohort Studies ,Glutarates ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,hemic and lymphatic diseases ,Internal medicine ,medicine ,Humans ,Secondary Acute Myeloid Leukemia ,Aged ,Aged, 80 and over ,Mutation ,Hematology ,business.industry ,Myelodysplastic syndromes ,General Medicine ,Middle Aged ,Prognosis ,medicine.disease ,Isocitrate Dehydrogenase ,Leukemia, Myeloid, Acute ,Haematopoiesis ,Cell Transformation, Neoplastic ,030104 developmental biology ,Isocitrate dehydrogenase ,Oncology ,Myelodysplastic Syndromes ,030220 oncology & carcinogenesis ,Cancer research ,Female ,business - Abstract
The myelodysplastic syndromes (MDS) are a group of hematologic disorders characterized by the presence of somatically mutated hematopoietic stem cells (HSCs) that increase the risk of progression to secondary acute myeloid leukemia (sAML). Mutations in isocitrate dehydrogenase (IDHmut) are thought to correlate with the increased production of the oncogenic protein 2-hydroxyglutarate (2-HG) in AML. The aim of this study was to examine whether serum 2-HG has utility as a prognostic biomarker, and whether elevated 2-HG levels are predictive of IDH mutations in patients with MDS. Genetic profiling was utilized to determine the genetic composition of a large cohort of MDS patients, including the presence or absence of IDH1 or IDH2 mutations (n = 281). Serum 2-HG levels were detected by liquid chromatography–tandem mass spectrometry. In the current study of MDS patients, elevated serum 2-HG levels were predictive of inferior overall- and leukemia-free survival irrespective of IPSS risk grouping. Higher serum 2-HG levels predicted the presence of IDH mutations. IDH2mut patients had a higher risk of leukemic transformation. The co-occurrence of DNMT3A or SRSF2 mutations was found to be increased in IDH2mut patients. IDH2 mutations were associated with significantly worse OS and LFS amongst patients with low-risk MDS by IPSS grouping. The noted predictive value of serum 2-HG levels and IDH2 mutations on OS and LFS support the use of biomarkers and/or underlying cytogenetics in novel prognostic scoring systems for MDS.
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- 2018
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26. Autoantibodies against islet cell antigens in children with type 1 diabetes mellitus
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Chi-Yu Huang, Fu-Sung Lo, Chao-Hsu Lin, Chiung-Ling Lin, Wei-Hsin Ting, Chen-Mei Hung, An-Mei Wang, Bi-Wen Cheng, Yi-Lei Wu, Mei-Ore Yang, Chia-Ching Chen, and Yann-Jinn Lee
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medicine.medical_specialty ,autoantibodies ,Pediatric endocrinology ,Immunology ,030209 endocrinology & metabolism ,glutamic acid decarboxylase 65 (GAD) autoantibody ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,insulinoma-associated protein 2 autoantibody ,Female patient ,Medicine ,030212 general & internal medicine ,General hospital ,Insulin Autoantibody ,Type 1 diabetes ,business.industry ,Research Paper: Immunology ,Autoantibody ,medicine.disease ,humanities ,insulin autoantibody ,Oncology ,Male patient ,business ,type 1 diabetes mellitus ,Biomedical sciences - Abstract
// Bi-Wen Cheng 1, 8, * , Fu-Sung Lo 2, 3, * , An-Mei Wang 4, 6 , Chen-Mei Hung 5 , Chi-Yu Huang 1, 6 , Wei-Hsin Ting 1, 6 , Mei-Ore Yang 7 , Chao-Hsu Lin 8 , Chia-Ching Chen 9 , Chiung-Ling Lin 10 , Yi-Lei Wu 11 and Yann-Jinn Lee 1, 10, 12, 13, 14 1 Department of Pediatric Endocrinology, MacKay Children's Hospital, Taipei, Taiwan 2 Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan 3 College of Medicine, Chang Gung University, Taoyuan, Taiwan 4 Department of Nuclear Medicine, MacKay Memorial Hospital, Taipei, Taiwan 5 Department of Pediatrics, Hsinchu Cathay General Hospital, HsinChu, Taiwan 6 MacKay Medicine, Nursing and Management College, New Taipei City, Taiwan 7 Department of Laboratory Medicine, MacKay Memorial Hospital, Taipei, Taiwan 8 Department of Pediatrics, MacKay Memorial Hospital HsinChu Branch, HsinChu, Taiwan 9 Department of Pediatrics, Chiayi Christian Hospital, Chiayi, Taiwan 10 Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan 11 Department of Pediatric Endocrinology and Metabolism, Chuanghua Christian Children’s Hospital, Chuanghua, Taiwan 12 Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan 13 Department of Medicine, Mackay Medical College, New Taipei City, Taiwan 14 Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan * These authors contributed equally to this work Correspondence to: Yann-Jinn Lee, email: yannlee@mmh.org.tw Keywords: autoantibodies; glutamic acid decarboxylase 65 (GAD) autoantibody; insulinoma-associated protein 2 autoantibody; insulin autoantibody; type 1 diabetes mellitus; Immunology Received: December 12, 2016 Accepted: February 13, 2018 Epub: February 19, 2018 Published: March 27, 2018 ABSTRACT We investigated the prevalence of glutamic acid decarboxylase 65 autoantibody (GADA), insulinoma-associated protein 2 autoantibody (IA2A), and insulin autoantibody (IAA) in 750 children with type 1 diabetes (T1D) living in Taiwan. GADA, IA2A, and IAA were measured by radioimmunoassay. The data were assessed by χ 2 test, binary logistic regression, and Spearman rank correlation. Of the 750 T1D patients, 66.3% had GADA, 65.3% IA2A, 35.7% IAA, and 17.2% no autoantibodies. The prevalence of GADA and IA2A significantly decreased along T1D duration. The positivity of either GADA or IA2A was 89.4% within the first year of disease and decreased to 36.7% after 9 years ( P = 1.22 × 10 –20 ). Female patients had significantly higher prevalence of GADA compared with male patients (72.3% vs. 59.7%, P = 0.00027). The patients diagnosed before 12 years of age had a positive rate of 92.2% for either GADA or IA2A. Patients diagnosed at age 12 or above had a significantly lower positive rate of 81.6% ( P = 0.011). GADA and IA2A significantly correlated with each other (rs = 0.245, P = 1.09 × 10 –11 ). We concluded that autoantibodies were detectable in 89.4% of T1D patients within one year after diagnosis. Their prevalence declined with disease duration. GADA was more prevalent in female patients. GADA and IA2A weakly correlated with each other.
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- 2018
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27. Multi-Traffic Scene Perception Based on Supervised Learning
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Xia Haipeng, Yuying Jiang, Lisheng Jin, and Chen Mei
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General Computer Science ,Computer science ,Machine vision ,Feature extraction ,Advanced driver assistance systems ,02 engineering and technology ,supervised learning ,complex weather conditions ,Underlying visual features ,0502 economics and business ,0202 electrical engineering, electronic engineering, information engineering ,General Materials Science ,Computer vision ,050210 logistics & transportation ,business.industry ,05 social sciences ,Supervised learning ,General Engineering ,Visualization ,classification ,Feature (computer vision) ,020201 artificial intelligence & image processing ,intelligent vehicle ,Artificial intelligence ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,business ,lcsh:TK1-9971 - Abstract
Traffic accidents are particularly serious on a rainy day, a dark night, an overcast and/or rainy night, a foggy day, and many other times with low visibility conditions. Present vision driver assistance systems are designed to perform under good-natured weather conditions. Classification is a methodology to identify the type of optical characteristics for vision enhancement algorithms to make them more efficient. To improve machine vision in bad weather situations, a multi-class weather classification method is presented based on multiple weather features and supervised learning. First, underlying visual features are extracted from multi-traffic scene images, and then the feature was expressed as an eight-dimensions feature matrix. Second, five supervised learning algorithms are used to train classifiers. The analysis shows that extracted features can accurately describe the image semantics, and the classifiers have high recognition accuracy rate and adaptive ability. The proposed method provides the basis for further enhancing the detection of anterior vehicle detection during nighttime illumination changes, as well as enhancing the driver’s field of vision on a foggy day.
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- 2018
28. Temporal error concealment algorithm by recursive block-matching principle
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Chen, Mei-Juan, Chen, Che-Shing, and Chi, Ming-Chieh
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Algorithms -- Research ,Algorithms -- Technology application ,Image coding -- Research ,Data compression -- Research ,Algorithm ,Technology application ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
Compressed video bitstream is sensitive to channel errors that may degrade the reconstructed pictures severely. Error concealment is an effective approach to reduce the impact of errors, and it is implemented at the decoders. Its aim is to mask the effect of the missing blocks to create image or video of subjectively acceptable quality by using the spatial or/and temporal correlation. This paper proposes a temporal error concealment method that exploits the temporal redundancy of a video sequence using a block-matching approach. A recursive block-matching algorithm, based on the two-step block-matching principle, is presented to refine the concealed video. The proposed algorithm can also conceal the multiple erroneous slices. The proposed algorithm outperforms the algorithms presented in previous studies. Index Terms--Block-matching, error slice, recursive, temporal error concealment.
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- 2005
29. Spatial and temporal error concealment algorithms of shape information for MPEG-4 video
- Author
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Chen, Mei-Juan, Cho, Chia-Chuan, and Chi, Ming-Chieh
- Subjects
Image coding -- Research ,Algorithms -- Research ,Algorithms -- Technology application ,Algorithm ,Technology application ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
In this paper, new methods for error concealment of shape information are proposed for compressed MPEG-4 bit-streams transmitted over error prone channels. For spatial domain, the proposed approach employs the Bezier curve fitting to approximate and outline the intra-video object plane (I-VOP). For temporal domain, the proposed scheme uses the weighted side matching criterion to reconstruct the inter-video object planes (P-/B-VOPs). The proposed algorithms get better subjective and objective qualities than previous works. Index Terms--Bezier curve, error concealment, MPEG-4, shape coding, side match.
- Published
- 2005
30. Modeling and controller design of a maglev guiding system for application in precision positioning
- Author
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Chen, Mei-Yung, Wang, Ming-Jyh, and Fu, Li-Chen
- Subjects
Magnetic suspension -- Research ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
In this paper, the authors analyze the dynamics of a magnetic guiding system and derive its analytical model with full degrees of freedom (DOFs). Then, an adaptive controller which deals with unknown parameters is proposed to regulate the five DOFs in this system. The guiding system, including sensors and driver subsystems, has actually been implemented. Based on the experimental results, satisfactory performance including stiffness and resolution has been achieved. This validates the design of the system hardware and demonstrates the feasibility of the developed controller. Index Terms--Adaptive control, guideway transportation, magnetic levitation (maglev), motion control.
- Published
- 2003
31. Efficient motion-estimation algorithm for reduced frame-rate video transcoder
- Author
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Chen, Mei-Juan, Chu, Ming-Chung, and Pan, Chih-Wei
- Subjects
Image coding -- Research ,Electric circuits -- Research ,Business ,Computers ,Electronics ,Electronics and electrical industries - Published
- 2002
32. Strain compounding: a new approach for speckle reduction
- Author
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Li, Pai-Chi and Chen, Mei-Ju
- Subjects
Ultrasonics in medicine -- Research ,Medical research -- Research ,Health care industry -- Research ,Electronics industry -- Research ,Health care industry ,Electronics industry ,Business ,Electronics ,Electronics and electrical industries - Abstract
A new compounding approach is described, for reducing speckle brightness variations. The approach makes use of the decorrelation between signals under diverse strain states.
- Published
- 2002
33. Effect of code coverage on software reliability measurement
- Author
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Chen, Mei-Hwa, Lyu, Michael R., and Wong, W. Eric
- Subjects
Reliability (Engineering) -- Research ,Software engineering -- Research ,Business ,Electronics ,Electronics and electrical industries - Abstract
A technique is proposed for dealing with over-estimation of reliability in software reliability-growth models. The technique relies on time and code measures for prediction of software failures in operation.
- Published
- 2001
34. Fan participation behaviour in baseball: an application of the theory of planned behaviour
- Author
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Cheng, Chih-Fu, Chen, Lung Hung, and Chen, Mei
- Subjects
Behavior modification -- Analysis ,Sports spectators -- Analysis ,Sports marketing -- Analysis ,Advertising, marketing and public relations ,Business ,Business, international ,Sports, sporting goods and toys industry - Abstract
Watching sporting events is a popular leisure activity. However, in the context of sports marketing, little is known about the mechanism that determines fans' game-attending behaviour. This study aims to investigate fan participation in the context of baseball, using the theory of planned behaviour. The 623 subjects of this study were recruited from the Chinese Professional Baseball League in Taiwan. The structural equation indicates that attitude and perceived behavioural control will have an influence on game-attending behaviour through behavioural intention. However, subjective norms do not significantly predict behavioural intention, nor do perceived behavioural controls significantly predict game-attending behaviour. The results are discussed in terms of their applicability to fan behaviour. Keywords leisure activity game attending spectator sport, Peer reviewed Executive summary In a sports marketing context, several theories have been developed to explain behaviour in sports marketing and to provide a firm basis for the explanation of [...]
- Published
- 2012
35. Perceived service quality and life satisfaction: the mediating role of the actor's satisfaction-with-event
- Author
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Chen, Lung Hung, Chen, Mei-Yen, Ye, Yun-Ci, Tung, I-Wu, Cheng, Chih-Fu, and Tung, Shen
- Subjects
Sports -- Economic aspects -- Customer relations -- Switzerland ,Customer service -- Evaluation ,Support services ,Customer service ,Advertising, marketing and public relations ,Business ,Business, international ,Sports, sporting goods and toys industry - Abstract
The aim of this study was to integrate the hierarchical model of the perceived service quality (PSQ) theory with the bottom-up theory of satisfaction. It was hypothesised that satisfaction with sporting events would mediate the relationship between PSQ and life satisfaction. Study 1 was conducted to translate the Perceived Service Quality questionnaire (PSQQ) (Brady & Cronin, 2011) into Chinese and to validate it for sporting events. Study 2 was conducted to examine the main hypothesis. The results indicated that satisfaction-with-event partially mediated the relationship between PSQ and life satisfaction. The results are discussed in terms of both the examined theories. Keywords positive psychology corporate responsibility service quality, Executive summary The links between perceived service quality (PSQ) and satisfaction in a sporting events context have received much attention. Empirical evidence has been accumulated which indicates that these links [...]
- Published
- 2012
36. Utilization of recycled brick powder as alternative filler in asphalt mixture
- Author
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Chen, Mei-zhu, Lin, Jun-tao, Wu, Shao-peng, and Liu, Cong-hui
- Subjects
Limestone -- Usage -- Mechanical properties -- Methods ,Recycling (Waste, etc.) -- China -- Mechanical properties -- Methods ,Bricks -- Usage -- Mechanical properties -- Methods ,Asphalt concrete -- Methods -- Usage -- Mechanical properties ,Business ,Construction and materials industries - Abstract
ABSTRACT The objective of this study is to investigate the use of recycled brick powder as replacement of mineral filler in asphalt mixture. A comparative study was carried out on [...]
- Published
- 2011
- Full Text
- View/download PDF
37. A direction set based algorithm for adaptive filtering
- Author
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Chen, Mei-Qin, Bose, Tamal, and Xu, Guo Fang
- Subjects
Digital filters -- Models ,Filtering (Electronics) -- Models ,Signal processing -- Models ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
A novel algorithm based on a direction set method was introduced for adaptive filtering. The proposed methodology has a computational complexity of O(N) for each update of the coefficient and makes use of the structure of the objective function. Furthermore, the algorithm has a rapid convergence rate and maintains a set of near-conjugate directions with respect to the Hessian. The effectiveness of the algorithm was demonstrated for a class of least squares problems common in adaptive filtering.
- Published
- 1999
38. Factors associated with diabetic nephropathy in children, adolescents, and adults with type 1 diabetes
- Author
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Chen-Mei Hung, Bi-Wen Cheng, Wei-Hsin Ting, Ya-Ting Chiang, Chon-In Chan, Chao-Hsu Lin, Fu-Sung Lo, Yi-Lei Wu, Fang-Ju Sun, Yann-Jinn Lee, Jeng-Daw Tsai, and Chi-Yu Huang
- Subjects
Adult ,Male ,medicine.medical_specialty ,Adolescent ,endocrine system diseases ,Taiwan ,030209 endocrinology & metabolism ,Blood Pressure ,Diabetic nephropathy ,03 medical and health sciences ,chemistry.chemical_compound ,Young Adult ,0302 clinical medicine ,Risk Factors ,Internal medicine ,medicine ,Albuminuria ,Humans ,Diabetic Nephropathies ,030212 general & internal medicine ,Child ,Survival analysis ,Glycemic ,Glycated Hemoglobin ,Type 1 diabetes ,Creatinine ,lcsh:R5-920 ,business.industry ,Age Factors ,nutritional and metabolic diseases ,General Medicine ,medicine.disease ,Survival Analysis ,Blood pressure ,Endocrinology ,Diabetes Mellitus, Type 1 ,Logistic Models ,chemistry ,Child, Preschool ,Multivariate Analysis ,Microalbuminuria ,Female ,medicine.symptom ,business ,lcsh:Medicine (General) ,Biomarkers - Abstract
Backbroud/Purpose: Microalbuminuria and macroalbuminuria are markers of diabetic nephropathy (DN). The purpose of this study was to unravel the risk factors for DN in the young patients with type 1 diabetes (T1D). Methods: 341 patients (160 males) with T1D diagnosed at the age 7.6 ± 4.0 years with disease duration 11.5 ± 6.5 years were assessed. Among them, 185 were young adults (aged 18.0â36.2 years). Urinary albumin creatinine ratio (UACR) was checked on morning spot urine. Microalbuminuria and macroalbuminuria were defined as a UACR of 30â300 mg/g and >300 mg/g, respectively, in at least 2 consecutive specimens. Results: 50 (14.7%) patients were classified as microalbuminuria and 13 (3.8%) as macroalbuminuria. In all patients, multivariate logistic regression revealed that the most significant risk factors were average HbA1c (%), OR (95% CI) = 1.76 (1.37â2.25), P = 0.002); and male sex, OR = (odd ratio 2.31 (1.19â4.46), P = 0.013). In adult patients, the most significant factors were average HbA1c, OR = 1.74 (1.32â2.31), P = 0.003; and systolic blood pressure, OR = 1.06 (1.01â1.11), P = 0.011. Survival analysis showed average HbA1c levels significantly influenced the development of DN. Conclusion: The most important risk factors for DN were average HbA1c and age. When microalbuminuria is detected, proper treatment with ACEIs or ARBs and improving glycemic control can delay progression of DN. Keywords: Type 1 diabetes, Diabetic nephropathy, Microalbuminuria, Macroalbuminuria, HbA1c
- Published
- 2017
39. Decitabine priming prior to low-dose chemotherapy improves patient outcomes in myelodysplastic syndromes-RAEB: a retrospective analysis vs. chemotherapy alone
- Author
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Jiejing Qian, Lili Xie, Jie Jin, Xinping Zhou, Juying Wei, Yingwan Luo, Weilai Xu, Gaixiang Xu, Liya Ma, Wenyuan Mai, Chao Hu, Hongyan Tong, Yanling Ren, Chen Mei, Yejiang Lou, Wenbin Qian, Li Ye, Peipei Lin, Yinjun Lou, Haitao Meng, and Xingnong Ye
- Subjects
Adult ,Male ,0301 basic medicine ,Oncology ,Cancer Research ,medicine.medical_specialty ,Anemia ,medicine.medical_treatment ,Karyotype ,Original Article – Clinical Oncology ,Myelodysplastic syndromes ,Decitabine ,Drug Administration Schedule ,03 medical and health sciences ,0302 clinical medicine ,Low-dose chemotherapy ,hemic and lymphatic diseases ,Internal medicine ,Antineoplastic Combined Chemotherapy Protocols ,medicine ,Retrospective analysis ,Humans ,Chemotherapy ,Aclarubicin ,Retrospective Studies ,Anemia, Refractory, with Excess of Blasts ,Hematology ,Dose-Response Relationship, Drug ,business.industry ,Cytarabine ,General Medicine ,Middle Aged ,medicine.disease ,030104 developmental biology ,030220 oncology & carcinogenesis ,Mutation ,Azacitidine ,Female ,Idarubicin ,business ,Priming (psychology) ,medicine.drug - Abstract
Purpose The aim of this study was to examine whether decitabine priming prior to low-dose chemotherapeutic regimens could improve outcomes in patients with myelodysplastic syndromes—refractory anemia with excess of blasts (MDS-RAEB). Methods The current retrospective analysis included all MDS-RAEB patients receiving idarubicin/cytarabine (IA) or aclacinomycin/cytarabine (AA), with or without decitabine priming during a period from February 2010 to May 2015. Treatment response and toxicity were compared between patients receiving decitabine priming and those who did not. A panel of 6 MDS-related genes was examined using bone marrow specimens. Results A total of 81 patients were included in the analysis: 40 received decitabine priming prior to chemotherapy (decitabine priming group). The median follow-up was 10.9 months (IQR: 6.2–21.9). The rate of overall response (OR) and complete remission (CR) was significantly higher in the decitabine priming group than in the chemotherapy group (OR: 75.0 vs. 51.2%, p = 0.027; CR: 55.0 vs. 29.3%, p = 0.019). Overall survival (OS) did not differ significantly between the two groups (19.5 vs. 14.7 months, p = 0.082). In a subgroup analysis that included only patients at
- Published
- 2017
- Full Text
- View/download PDF
40. Equivalence-by-design for advanced dosage forms and drug products
- Author
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Chen, Mei-Ling
- Subjects
Drug delivery systems -- Quality management ,Pharmaceutical industry -- Quality management ,Pharmaceutical industry -- Laws, regulations and rules ,Quality control -- Laws, regulations and rules ,Drugs -- Vehicles ,Drugs -- Quality management ,Quality control ,Government regulation ,Business ,Pharmaceuticals and cosmetics industries - Abstract
Industry and regulatory agencies face several challenges in assessing therapeutic equivalence. FDA has been encouraging drug sponsors to use a systematic approach such as quality-by-design principles for pharmaceutical development, in [...]
- Published
- 2009
41. Factors Associated with the Acceptance of a Novel Integrated Care Service by Community-Dwelling Elderly in Chongqing, China
- Author
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Chen Mei, Xiao Ling, Jia Wenbi, Chen Zhiyu, Xiao Mingzhao, Zhao Qinghua, and Huang Huanhuan
- Subjects
Service (business) ,Nursing ,Business ,China ,Integrated care - Abstract
Background: Medical Union is a novel model of integrated care services. At present, the Chinese government encourages the development of health care services for aged people provided by Medical Union which may help make effective use of limited medical resources in China. Purpose: This study aims at examining the prevalence of and associated factors affecting the acceptance of a novel integrated care service by community-dwelling elderly. Methods: We extracted raw data generated from 1,180 community residents over 60 years old and performed binary logistic regression analyses to predict odds of the acceptance in Chongqing, China. Using Anderson’s health behavioral model, we examined three groups of predictive factors: (1) predisposing factors (e.g. social demographic information), (2) enabling factors (e.g. health insurance status), (3) need factors (e.g. health status). Results: The application of this novel integrated care service was explained better by enabling factors than other predictive factors. In the best explanatory model (model 3), one predisposing factor (degree of education), one enabling factor (insurance type), and five need factors (self-reported health status, hypertension, diabetes, dyslipidemia, and disability) were variables considered as the significant factors affecting the acceptance of the novel integrated care service by community-dwelling elderly in Chongqing, china. Conclusion: This study provides an empirical understanding of the equity of the access to a novel integrated care service for older adults who live in communities. Our findings advocate that primary health institutions should play an important role in health education. Advanced policies are needed to protect physically and economically vulnerable groups.
- Published
- 2019
- Full Text
- View/download PDF
42. Long-term outcomes of graves disease in children treated with anti-thyroid drugs
- Author
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Chen-Mei Hung, Hsin-Jung Li, Chia-Jung Chan, Shih-Kang Huang, Chon-In Chan, Yi-Lei Wu, Chi-Yu Huang, Ya-Ting Chiang, Bi-Wen Cheng, Wei-Hsin Ting, Chao-Hsu Lin, and Yann-Jinn Lee
- Subjects
Male ,Pediatrics ,medicine.medical_specialty ,Adolescent ,Graves' disease ,Age at diagnosis ,030209 endocrinology & metabolism ,03 medical and health sciences ,0302 clinical medicine ,children ,Antithyroid Agents ,030225 pediatrics ,medicine ,Long term outcomes ,Effective treatment ,Humans ,adolescents ,Child ,Retrospective Studies ,business.industry ,Optimal treatment ,Thyroid ,lcsh:RJ1-570 ,lcsh:Pediatrics ,medicine.disease ,Graves Disease ,medicine.anatomical_structure ,Child, Preschool ,Pediatrics, Perinatology and Child Health ,Population study ,antithyroid drugs ,Female ,Remission rate ,business - Abstract
Background: Graves disease (GD) is the most common cause of thyrotoxicosis in children and adolescents, accounting for 15% of all thyroid diseases during childhood. Anti-thyroid drugs (ATD) are recommended as the first-line treatment in children and adolescents. However, the remission rate is lower in children than in adults, and the optimal treatment duration and favorable factors associated with remission remain unknown. We aimed to investigate long-term outcomes of pediatric GD patients receiving ATD. Methods: We retrospectively reviewed medical charts of 396 GD subjects from 1985 to 2017 at MacKay Children's Hospital. Ninety–six patients were excluded from the analyses, including 71 patients followed for less than one year, 6 patients who received radioactive therapy and 19 patients who received surgery. The remaining 300 patients initially treated with ATD and followed up for more than 1 year constituted our study population. Results: The 300 patients comprised 257 (85.7%) females and 43 (14.3%) males. Their median age at diagnosis was 11.6 (range 2.7–17.8) years with 11 patients (3.7%) younger than 5 years. Their median follow-up period was 4.7 (range 1.1–23.9) years. Overall, 122 patients achieved the criteria for discontinuing ATD treatment, and seventy-nine (39.9%) patients achieved remission, with a median follow-up period of 5.3 (range 1.5–20.1) years. Patients in the remission group were more likely to be aged
- Published
- 2019
43. TP53 mutations are associated with very complex karyotype and suggest poor prognosis in newly diagnosed myelodysplastic syndrome patients with monosomal karyotype
- Author
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Yanling Ren, Shuanghong Zhu, Jie Jin, Hua Zhang, Lingxu Jiang, Yingwan Luo, Hongyan Tong, Li Ye, Xinping Zhou, Jinghan Wang, Chen Mei, and Lu Wang
- Subjects
Male ,Poor prognosis ,medicine.medical_specialty ,Monosomy 5 ,Decitabine ,Gene mutation ,Tp53 mutation ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Monosomy ,Internal medicine ,Complex Karyotype ,Medicine ,Humans ,030212 general & internal medicine ,Aged ,Retrospective Studies ,business.industry ,Retrospective cohort study ,General Medicine ,Middle Aged ,Prognosis ,Oncology ,030220 oncology & carcinogenesis ,Karyotyping ,Myelodysplastic Syndromes ,Mutation ,Female ,Tumor Suppressor Protein p53 ,business ,Monosomal karyotype ,medicine.drug - Abstract
AIM The aim of this study was to evaluate the clinical and molecular characteristics of myelodysplastic syndrome (MDS) patients with monosomal karyotype (MK). METHODS Eighty MDS patients with MK diagnosed between January 2010 and December 2018 were included in the retrospective study. Seventy-three had complex karyotype (CK) and 46 had very CK (vCK, ≥ 5 abnormalities). Clinical information was collected, and a panel of 37 genes, on which mutations have been previously reported to be associated with MDS patients, was analyzed by next-generation sequencing. Genetic and biological features and their association with survival were evaluated. RESULTS Monosomy 5, 7, and 17 were the most frequent and mainly occurred in patients with vCK. While median overall survival (OS) for all patients was 12.8 months with 95% CI 9.1-16.5, patients with vCK had shorter OS (8.4 months with 95% CI 3.9-12.8) than those with non-vCK (16.1 months with 95% CI 11.5-20.8) (P = .02). At least one gene mutation was detected in 76 patients (95%), TP53 mutations were detected in 57 patients, and their median OS was significantly shorter than those without TP53 mutations (9.5 months with 95% CI 7.5-11.5 vs 26.1 months with 95% CI 8.0-44.2, P
- Published
- 2019
44. Scorpion Venom Heat-Resistant Peptide is Neuroprotective against Cerebral Ischemia-Reperfusion Injury in Association with the NMDA-MAPK Pathway
- Author
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Jie Zhao, Na Li, Shao Li, Chen-Mei Wang, Xu-Gang Wang, Ting Zhang, Ying-Zi Wang, Yue-Lin Huang, Bin Wang, Dan-Dan Zhu, Bi-Ying Ge, and Yan Peng
- Subjects
0301 basic medicine ,MAPK/ERK pathway ,Male ,Physiology ,p38 mitogen-activated protein kinases ,Excitotoxicity ,Ischemia ,Scorpion Venoms ,Brain Edema ,Pharmacology ,medicine.disease_cause ,Neuroprotection ,Receptors, N-Methyl-D-Aspartate ,p38 Mitogen-Activated Protein Kinases ,Proinflammatory cytokine ,03 medical and health sciences ,Mice ,0302 clinical medicine ,medicine ,Animals ,Receptor ,Cerebral Cortex ,Neurons ,Behavior, Animal ,business.industry ,General Neuroscience ,Infarction, Middle Cerebral Artery ,General Medicine ,medicine.disease ,Mice, Inbred C57BL ,Disease Models, Animal ,030104 developmental biology ,Neuroprotective Agents ,nervous system ,Animals, Newborn ,Reperfusion Injury ,Original Article ,business ,Peptides ,Reperfusion injury ,030217 neurology & neurosurgery ,Psychomotor Performance ,Signal Transduction - Abstract
Scorpion venom heat-resistant peptide (SVHRP) is a component purified from Buthus martensii Karsch scorpion venom. Our previous studies have shown that SVHRP is neuroprotective in models of Alzheimer’s disease and Parkinson’s disease. The present study aimed to explore the potential neuroprotective effects of SVHRP on cerebral ischemia/reperfusion (I/R) injury, using a mouse model of middle cerebral artery occlusion/reperfusion (MCAO/R) and a cellular model of oxygen-glucose deprivation/reoxygenation (OGD/R). Our results showed that SVHRP treatment decreased the neurological deficit scores, edema formation, infarct volume and neuronal loss in the MCAO/R mice, and protected primary neurons against OGD/R insult. SVHRP pretreatment suppressed the alterations in protein levels of N-methyl-D-aspartate receptors (NMDARs) and phosphorylated p38 MAPK as well as some proinflammatory factors in both the animal and cellular models. These results suggest that SVHRP has neuroprotective effects against cerebral I/R injury, which might be associated with inhibition of the NMDA-MAPK-mediated excitotoxicity.
- Published
- 2019
45. Decitabine improves overall survival in myelodysplastic syndromes-RAEB patients aged ≥60 years and has lower toxicities: Comparison with low-dose chemotherapy
- Author
-
Yingwan Luo, Weilai Xu, Juying Wei, Yanling Ren, Yinjun Lou, Jie Jin, Chao Hu, Li Ye, Liya Ma, Hongyan Tong, Xinping Zhou, Xingnong Ye, and Chen Mei
- Subjects
Adult ,Male ,medicine.medical_specialty ,Antimetabolites, Antineoplastic ,Anemia ,medicine.medical_treatment ,Decitabine ,Subgroup analysis ,Kaplan-Meier Estimate ,Gastroenterology ,Low-dose chemotherapy ,Internal medicine ,medicine ,Odds Ratio ,Humans ,Genetic Testing ,Molecular Biology ,Aged ,Chemotherapy ,Anemia, Refractory, with Excess of Blasts ,business.industry ,Incidence (epidemiology) ,Myelodysplastic syndromes ,Cell Biology ,Hematology ,Middle Aged ,medicine.disease ,Prognosis ,Regimen ,Treatment Outcome ,Myelodysplastic Syndromes ,Molecular Medicine ,Female ,business ,Biomarkers ,medicine.drug - Abstract
Decitabine and low-dose chemotherapy are common treatments for intermediate and high risk myelodysplastic syndromes (MDS). In this study, we retrospectively assessed the efficacy and toxicity of the two regimens for MDS-refractory anemia with excess blasts (MDS-RAEB) patients. A total of 112 patients with a diagnosis of MDS-RAEB are included. The overall response (OR) and complete remission (CR) rate was comparable between the two groups (OR: 64.1% vs. 66.7%, p = 0.60; CR: 23.4% vs. 31.3%, p = 0.64). The OR rates of 20 mg/m2/day and 15 mg/m2/day decitabine regimen were comparable (69.0% vs. 60.0%, p = 0.46). Overall survival (OS) did not differ significantly between the groups (20.7 vs. 13.5 months, p = 0.17). In a subgroup analysis that included only patients at ≥60 years of age, survival benefit of decitabine was apparent (20.6 vs. 10.0 months, p = 0.03). In hematological toxicities, the lowest count of platelet in the decitabine group was higher significantly. And, the incidence of Grade 3–4 infection in the decitabine group was lower significantly. Our results demonstrate that both decitabine and low-dose chemotherapy are effective for MDS-RAEB, but decitabine was safer. Decitabine might be a better choice for patients at ≥60 years of age.
- Published
- 2019
46. Stability of two-dimensional discrete systems with periodic coefficients
- Author
-
Bose, Tamal, Chen, Mei-Qin, Joo, Kyung Sub, and Xu, Guo-Fang
- Subjects
Discrete-time systems -- Research ,Filters (Separation) -- Research ,Stability -- Analysis ,Business ,Computers and office automation industries ,Electronics ,Electronics and electrical industries - Abstract
Two-dimensional (2-D) discrete systems with periodic coefficients are considered for stability. These systems are called periodically shift variant (PSV) digital filters and have many applications in signal processing that include the filtering of 2-D signals with cyclostationary noise, scrambling of digital images, and implementation of multirate filter banks. In this paper, the filters are formulated in the form of the well known Fornasini-Marchesini state-space model with periodic coefficients. This PSV model is then studied for stability. Two sufficient conditions and one necessary condition are established for asymptotic stability. Some examples are given to illustrate the results.
- Published
- 1998
47. Error concealment of lost motion vectors with overlapped motion compensation
- Author
-
Chen, Mei-Juan, Chen, Liang-Gee, and Weng, Ro-Min
- Subjects
Data compression -- Research ,Image coding -- Research ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
A new error concealment algorithm for recovering the lost or erroneously received motion vectors is presented. It combines the overlapped motion compensation and the side match criterion to make the effect of lost motion vectors subjectively imperceptible. The side match criterion takes advantage of the spatial contiguity and interpixel correlation of image to select the best-fit replacement among the motion vectors of spatially contiguous candidate blocks. Particularly, to mask the blocking artifacts, we incorporate an overlapping technique to create a subjectively closer approximation to the true error-free image. Index Terms - Block matching, error concealment, motion compensation, temporal extrapolation.
- Published
- 1997
48. A cost-effective architecture for 8 x 8 two-dimensional DCT/IDCT using direct method
- Author
-
Lee, Yung-Pin, Chen, Thou-Ho, Chen, Liang-Gee, Chen, Mei-Juan, and Ku, Chung-Wei
- Subjects
Image coding -- Research ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
In this paper, we develop a novel 8 x 8 two-dimensional (2-D) discrete cosine transform/inverse discrete cosine transform (DCT/IDCT) architecture based on the direct 2-D approach and the rotation technique. The computational complexity is reduced by taking advantage of the special attribute of complex number. Both the parallel and the folded architectures are proposed. Unlike other approaches, the proposed architecture is regular and economically allowable for VLSI implementation. Compared to the row-column method, less internal wordlength is needed in order to meet the error requirement of IDCT, and the throughput of the proposed architecture can achieve two times that of the row-column method with 30% hardware increased. Index Terms - DCT/IDCT, direct 2-D approach, finite wordlength analysis.
- Published
- 1997
49. Conjugate gradient method in adaptive bilinear filtering
- Author
-
Bose, Tamal and Chen, Mei-Qin
- Subjects
Signal processing -- Research ,Digital filters -- Research ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
The use of the Conjugate Gradient (CG) optimization method for identifying bilinear systems is explored. Specifically, the CG method is employed to develop an algorithm for adaptive bilinear digital filtering. The algorithm, which conducts only a single iteration and coefficient update for each data pair, is superior to the LMS and RLS algorithms with respect to convergence speed. In addition, it incorporates a preconditioning scheme for accelerating the convergence in situations where the algorithm slows down.
- Published
- 1995
50. A new block-matching criterion for motion estimation and its implementation
- Author
-
Chen, Mei-Juan, Chen, Liang-Gee, Chiueh, Tzi-Dar, and Lee, Yung-Pin
- Subjects
Data compression -- Research ,Image transmission -- Research ,Image coding -- Research ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
In this paper, a novel and efficient block-matching motion estimation criterion called Minimized Maximum Error (MiniMax) is considered. The proposed method can save hardware area about 15% with acceptable video performance. A chip which combines the MiniMax matching criterion and the one-dimensional full search algorithm is presented. The ASIC is motivated by the need of the intensive computational demand to perform motion estimation in real-time. The proposed single chip can match the applications of H.261 and MPEG international standards. Chip cascading is allowed for larger searching range applications.
- Published
- 1995
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