1.Suicide risk and associated risk factors in adult patients with epilepsy
Zhemeng CHEN ; Yi GUO ; Shuang WANG ; Yelei TANG ; Yebo GE ; Meiping DING
Chinese Journal of Neurology 2014;47(4):250-253
Objective To investigate the relationships of suicide risk and its associated risk factors in adult patients with epilepsy.Methods All 211 adult patients with epilepsy from the epilepsy clinic of the Second Affiliated Hospital,Zhejiang University School of Medicine,were enrolled to evaluate the presence of suicide risk and depressive disorder by using the suicide module and the depressive disorder module of the Mini International Neuropsychiatric Interview (MINI).Demographic variables for age,gender,employment status,marital status,years of education,and seizure factors for age of onset,types of seizure,seizure frequency and epilepsy duration,result of MRI and types of antiepileptic drugs were also recorded.We compared the differences of risk factors between the two groups with or without suicide risk and investigated the relationships between the depressive disorder and suicide risk.Results The suicide risk of the patients was 21.3% (45/211),and 17.1% (36/211) of the patients had depressive disorder.The suicide risk of the epilepsy patients associated with depressive disorder was 75.0% (27/36),and the suicide risk of the epilepsy patients associated with no depressive disorder was 10.3% (18/175).There was statistical difference between the two groups (x2 =74.525,P < 0.01).About 60.0% (27/45) of the patients with suicide risk was accompanied with depressive disorder.As suicide risk increased,the proportion of concurrent depressive disorder elevated.There was significant statistical difference in the rates of depressive disorder among the different suicide risk groups.Conclusions The patients with epilepsy have suicide risk.The suicide risk is higher in patients with depressive disorder.
2.Feasibility study for calculating size-specific dose estimates based on weight and body mass index in CT abdomen-pelvic examination of adult population
Jian XU ; Xiangquan WANG ; Panfeng YANG ; Yelei XIE ; Kuangnan LUO ; Dewang MAO
Chinese Journal of Radiological Medicine and Protection 2020;40(7):549-553
Objective:To explore the feasibility for taking weight and body mass index (BMI) to calculate the size-specific dose estimate (SSDE) in abdomen-pelvis CT examination.Methods:512 adult patients undergoing abdomen-pelvis CT examination were retrospectively analyzed. The in-house software based on MATLAB platform were used to calculate automatically water equivalent diameter ( dw), size-dependent conversion factor ( f), SSDE, together with their respective averaged values. The correlations between age, height, weight and BMI with dw were calculated by using Spearman correlation analysis. Two regression equations were established to calculate the SSDE (SSDE weight, SSDE BMI), one for the correlation of weight with dw based on first half of these cases and the other for that between BMI with dw based on another half as the cases to be verified. With reference of the SSDE derived from the in-house software, the averaged relative differences and root-mean-square errors in SSDE weightand SSDE BMI were calculated, respectively. Results:No statistically significant correlation between age and d w ( P>0.05) was shown, but weak correlation between height and dw( r=0.260, P<0.05), strong correlation between either weight or BMI with dw( r=0.879, 0.851, P<0.05). Two regression equations were described as dw=13.808+ 0.184×weight, dw=11.142+ 0.618×BMI. The mean SSDE, SSDE weight and SSDE BMI for the verified patients were (13.55±1.66) mGy, (13.84±2.03) mGy and (13.83±2.02) mGy, respectively. As compared to actual SSDE, the averaged relative differences in SSDE weight and SSDE BMI were 1.97% and 1.87%; 0.38% and 2.75% for male patients; 4.58% and 0.43% for female patients; 0.11% and 3.32% for patients with BMI<18.5 kg/m 2;1.92% and 2.06% for those with 18.5 kg/m 2≤BMI<24.0 kg/m 2;2.57% and 1.57% for those with 24 kg/m 2≤BMI<28.0 kg/m 2;3.28% and -1.36% for those with BMI≥28.0 kg/m 2. The averaged root-mean-square errors in SSDE weight and SSDE BMI were both 0.80 mGy; 0.65 and 0.67 mGy for male patients; 0.98 and 0.59 mGy for female patients; 0.73 and 1.03 mGy for underweight, 0.74 and 0.66 mGy for normal weight, 0.85 and 0.79 mGy for overweight, and 1.10 and 1.32 mGy for obesity. Conclusions:Weight and BMI can be used as the surrogate dw to compute SSDE in adult abdomen-pelvis CT examination. However, Weight rather than BMI is more applied to male patients, and BMI is more suitable for female patients.
3.Current status and perspectives of chimeric antigen receptor modified T cells for cancer treatment.
Zhenguang WANG ; Yelei GUO ; Weidong HAN
Protein & Cell 2017;8(12):896-925
Chimeric antigen receptor (CAR) is a recombinant immunoreceptor combining an antibody-derived targeting fragment with signaling domains capable of activating cells, which endows T cells with the ability to recognize tumor-associated surface antigens independent of the expression of major histocompatibility complex (MHC) molecules. Recent early-phase clinical trials of CAR-modified T (CAR-T) cells for relapsed or refractory B cell malignancies have demonstrated promising results (that is, anti-CD19 CAR-T in B cell acute lymphoblastic leukemia (B-ALL)). Given this success, broadening the clinical experience of CAR-T cell therapy beyond hematological malignancies has been actively investigated. Here we discuss the basic design of CAR and review the clinical results from the studies of CAR-T cells in B cell leukemia and lymphoma, and several solid tumors. We additionally discuss the major challenges in the further development and strategies for increasing anti-tumor activity and safety, as well as for successful commercial translation.
Animals
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Humans
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Immunity, Cellular
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Immunotherapy
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Precursor B-Cell Lymphoblastic Leukemia-Lymphoma
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immunology
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pathology
;
therapy
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Receptors, Antigen, T-Cell
;
immunology
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Recombinant Fusion Proteins
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immunology
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T-Lymphocytes
;
immunology
;
transplantation
4.Targeting cancer stem cells by using chimeric antigen receptor-modified T cells: a potential and curable approach for cancer treatment.
Yelei GUO ; Kaichao FENG ; Yao WANG ; Weidong HAN
Protein & Cell 2018;9(6):516-526
Cancer stem cells (CSCs), a subpopulation of tumor cells, have self-renewal and multi-lineage differentiation abilities that play an important role in cancer initiation, maintenance, and metastasis. An accumulation of evidence indicates that CSCs can cause conventional therapy failure and cancer recurrence because of their treatment resistance and self-regeneration characteristics. Therefore, approaches that specifically and efficiently eliminate CSCs to achieve a durable clinical response are urgently needed. Currently, treatments with chimeric antigen receptor-modified T (CART) cells have shown successful clinical outcomes in patients with hematologic malignancies, and their safety and feasibility in solid tumors was confirmed. In this review, we will discuss in detail the possibility that CART cells inhibit CSCs by specifically targeting their cell surface markers, which will ultimately improve the clinical response for patients with various types of cancer. A number of viewpoints were summarized to promote the application of CSC-targeted CART cells in clinical cancer treatment. This review covers the key aspects of CSC-targeted CART cells against cancers in accordance with the premise of the model, from bench to bedside and back to bench.
Humans
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Molecular Targeted Therapy
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methods
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Neoplasms
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immunology
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pathology
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therapy
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Neoplastic Stem Cells
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pathology
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Receptors, Chimeric Antigen
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metabolism
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T-Lymphocytes
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immunology
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metabolism
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Translational Medical Research
5.Design of Low Power Multi-parameter Monitoring System Based on Bluetooth.
Yelei WANG ; Yueming CHEN ; Jilun YE ; Yong XIANG ; Haiyang HU
Chinese Journal of Medical Instrumentation 2020;44(6):487-490
This paper designs a bluetooth-based low-power multi-parameter monitoring system. The system is mainly composed of ECG signal acquisition, respiratory signal acquisition, body temperature acquisition, bluetooth 4.0 transmission module and Android mobile phone APP display. The system collects the corresponding physiological signals through various collection parts, and can realize the monitoring of three physiological signals of electrocardiogram, respiration and body temperature. The Android mobile APP can display ECG, respiratory waveform and temperature data in real time. The system is small in size and low in power consumption, and has a good application prospect in portable and wearable medical applications.
Body Temperature
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Cell Phone
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Electrocardiography
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Humans
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Mobile Applications
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Monitoring, Physiologic/instrumentation*
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Respiratory Rate
6.Analysis of risk factors and their warning effectiveness for postoperative intestinal barrier dysfunction in patients with severe traumatic brain injury
Chunlong DING ; Junjie CHEN ; Shaodong XI ; Qinwei ZHOU ; Huijun WANG ; Jie QIU ; Huize LIU ; Yelei ZHANG ; Yunxu ZHENG ; Fukang DONG
Chinese Journal of Trauma 2024;40(2):127-132
Objective:To investigate the risk factors and their warning effectiveness for postoperative intestinal barrier dysfunction (IBD) in patients with severe traumatic brain injury (sTBI).Methods:A retrospective cohort study was conducted to analyze the clinical data of 101 patients with sTBI admitted to Wuxi Branch of Zhongda Hospital Affiliated to Southeast University from May 2020 to February 2023, including 63 males and 38 females, aged 21-81 years [(53.4±14.2)years]. All the patients underwent emergency surgery. The patients were divided into IBD group ( n=67) and non-IBD group ( n=34) according to whether or not they had IBD after surgery. The gender, age, basic diseases (hypertension and diabetes), types of intracranial hematoma (subdural, epidural, and intracerebral hematoma), preoperative Glasgow Coma Scale (GCS), cerebral hernia, intraoperative initial intracranial pressure (iICP), operation time, removal of bone flap, treatment time in ICU, initiation time of enteral nutrition, and use of broad-spectrum antibiotics were recorded in the two groups. Univariate and multivariate binary Logistic regression analyses were conducted to assess the correlations between above-mentioned indicators and incidence of postoperative IBD in sTBI patients and determine the independent risk factors for sTBI. Receiver operating characteristic (ROC) curve and area under the curve (AUC) were used to evaluate the warning effectiveness of each risk factor for IBD. Results:The results of the univariate analysis showed that preoperative GCS, cerebral hernia, intraoperative iICP, removal of bone flap, treatment time in ICU, initiation time of enteral nutrition, and use of broad-spectrum antibiotics were significantly correlated with the incidence of IBD in sTBI patients ( P<0.05 or 0.01), while there were no correlations of IBD with gender, age, basic diseases, types of intracranial hematoma and operation time ( P>0.05). The results of the multivariate binary Logistic regression analysis showed that preoperative GCS≤5 points ( OR=2.49, 95% CI 1.17, 5.32, P<0.05), intraoperative iICP>23 mmHg (1 mmHg=0.133 kPa)( OR=1.20, 95% CI 1.03, 1.39, P<0.05), and initiation time of enteral nutrition>24 hours ( OR=10.03, 95% CI 1.26, 80.21, P<0.05) were highly correlated with postoperative IBD in sTBI patients. The results of the ROC curve analysis showed that intraoperative iICP had the highest warning value (AUC=0.91, 95% CI 0.85, 0.96), followed by preoperative GCS (AUC=0.88, 95% CI 0.82, 0.95), and initiation time of enteral nutrition had the lowest warning value (AUC=0.78, 95% CI 0.69, 0.87). Conclusions:Preoperative GCS≤5 points, intraoperative iICP>23 mmHg, and initiation time of enteral nutrition>24 hours are independent risk factors for postoperative IBD in sTBI patients. The warning value of intraoperative iICP ranks the highest for postoperative IBD in sTBI patients, followed by preoperative GCS, with initiation time of enteral nutrition having the lowest warning value.
7.Design of Treatment System for Poor Peripheral Circulation Using Air Wave Pressure Based on STM32 Microprocessor.
Haiyang HU ; Yueming CHEN ; Jilun YE ; Yong XIANG ; Bin WEN ; Yelei WANG
Chinese Journal of Medical Instrumentation 2020;44(1):42-46
This study designs an intermittent pneumatic pressurization device with STM32 series single chip as the core. The working state of the air pump and the plurality of air chambers is controlled by the IO port of the single chip microcomputer, and the circulating inflation of the plurality of air bags is realized. The pressure monitoring system consists of a silicon piezoresistive pressure sensor, a high-precision operational amplifier and a 12-bit AD converter which monitors the gas pressure of each gas path in real time to ensure the safety of the equipment. The system is easy to operate, simple in function, and has strong practicability.
Blood Circulation
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Cardiovascular System/physiopathology*
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Equipment Design
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Humans
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Microcomputers
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Pressure
8.Phase I study of chimeric antigen receptor modified T cells in treating HER2-positive advanced biliary tract cancers and pancreatic cancers.
Kaichao FENG ; Yang LIU ; Yelei GUO ; Jingdan QIU ; Zhiqiang WU ; Hanren DAI ; Qingming YANG ; Yao WANG ; Weidong HAN
Protein & Cell 2018;9(10):838-847
This phase I clinical trial (NCT01935843) is to evaluate the safety, feasibility, and activity of chimeric antigen receptor-engineered T cell (CART) immunotherapy targeting human epidermal growth factor receptor 2 (HER2) in patients with advanced biliary tract cancers (BTCs) and pancreatic cancers (PCs). Eligible patients with HER2-positive (>50%) BTCs and PCs were enrolled in the trial. Well cultured CART-HER2 cells were infused following the conditioning treatment composed of nab-paclitaxel (100-200 mg/m) and cyclophosphamide (15-35 mg/kg). CAR transgene copy number in the peripheral blood was serially measured to monitor the expansion and persistence of CART-HER2 cells in vivo. Eleven enrolled patients received 1 to 2-cycle CART-HER2 cell infusion (median CAR T cell 2.1 × 10/kg). The conditioning treatment resulted in mild-to-moderate fatigue, nausea/vomiting, myalgia/arthralgia, and lymphopenia. Except one grade-3 acute febrile syndrome and one abnormal elevation of transaminase (>9 ULN), adverse events related to the infusion of CART-HER2 cells were mild-to-moderate. Post-infusion toxicities included one case of reversible severe upper gastrointestinal hemorrhage which occurred in a patient with gastric antrum invaded by metastasis 11 days after the CART-HER2 cell infusion, and 2 cases of grade 1-2 delayed fever, accompanied by the release of C-reactive protein and interleukin-6. All patients were evaluable for assessment of clinical response, among which 1 obtained a 4.5-months partial response and 5 achieved stable disease. The median progression free survival was 4.8 months (range, 1.5-8.3 months). Finally, data from this study demonstrated the safety and feasibility of CART-HER2 immunotherapy, and showed encouraging signals of clinical activity.
Aged
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Biliary Tract Neoplasms
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immunology
;
therapy
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Female
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Humans
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Immunotherapy, Adoptive
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Male
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Middle Aged
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Pancreatic Neoplasms
;
immunology
;
therapy
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Receptor, ErbB-2
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immunology
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Receptors, Chimeric Antigen
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immunology
;
T-Lymphocytes
;
immunology
9.Effective and persistent antitumor activity of HER2-directed CAR-T cells against gastric cancer cells in vitro and xenotransplanted tumors in vivo.
Yanjing SONG ; Chuan TONG ; Yao WANG ; Yunhe GAO ; Hanren DAI ; Yelei GUO ; Xudong ZHAO ; Yi WANG ; Zizheng WANG ; Weidong HAN ; Lin CHEN
Protein & Cell 2018;9(10):867-878
Human epidermal growth factor receptor 2 (HER2) proteins are overexpressed in a high proportion of gastric cancer (GC) cases and affect the maintenance of cancer stem cell (CSC) subpopulations, which are used as targets for the clinical treatment of patients with HER2-positive GC. Despite improvements in survival, numerous HER2-positive patients fail treatment with trastuzumab, highlighting the need for more effective therapies. In this study, we generated a novel type of genetically modified human T cells, expressing a chimeric antigen receptor (CAR), and targeting the GC cell antigen HER2, which harbors the CD137 and CD3ζ moieties. Our findings show that the expanded CAR-T cells, expressing an increased central memory phenotype, were activated by the specific recognition of HER2 antigens in an MHC-independent manner, and effectively killed patient-derived HER2-positive GC cells. In HER2-positive xenograft tumors, CAR-T cells exhibited considerably enhanced tumor inhibition ability, long-term survival, and homing to targets, compared with those of non-transduced T cells. The sphere-forming ability and in vivo tumorigenicity of patient-derived gastric cancer stem-like cells, expressing HER2 and the CD44 protein, were also inhibited. Our results support the future development and clinical application of this adoptive immunotherapy in patients with HER2-positive advanced GC.
Animals
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Humans
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Mice
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Mice, Inbred BALB C
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Mice, Nude
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Neoplasms, Experimental
;
immunology
;
pathology
;
therapy
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Receptor, ErbB-2
;
immunology
;
Receptors, Antigen, T-Cell
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immunology
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Stomach Neoplasms
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immunology
;
pathology
;
therapy
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Tumor Cells, Cultured
10. The relationship between insulin resistance and plasma hs-CRP in patients with chronic schizophrenia
Xiaoshuai NING ; Lei XIA ; Yating YANG ; Juan WANG ; Yelei ZHANG ; Zhiwei LIU ; Yulong ZHANG ; Yi ZHONG ; Tongtong ZHAO ; Wenzheng LI ; Huanzhong LIU
Chinese Journal of Behavioral Medicine and Brain Science 2019;28(9):822-826
Objective:
To explore the relationship between insulin resistance and plasma hypersensitive reactive protein (hs-CRP) in patients with chronic schizophrenia.
Methods:
A total of 247 inpatients with chronic schizophrenia (patient group) and 166 cases of normal individuals(control group) were enrolled.Their general demographic and clinical data were collected, fasting blood glucose, hs-CRP, c-peptide and insulin indexes were tested, and insulin resistance index (HOMA-IR) was calculated.The insulin resistance level of the patients group and the control group was compared by Mann-Whitney