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Glover FE, Del Giudice F, Belladelli F, Ryan PB, Chen T, Eisenberg ML, Caudle WM. Correction to: The association between 2,4‑D and serum testosterone levels: NHANES 2013-2014. J Endocrinol Invest 2022; 45:909. [PMID: 34985686 DOI: 10.1007/s40618-021-01724-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Gupta S, Chen T, Destenaves B. Quantitative RNA assessment and long-term stability in the FFPE tumor samples using Digital Spatial Profiler. IMMUNO-ONCOLOGY AND TECHNOLOGY 2022; 13:100069. [PMID: 35754852 PMCID: PMC9216648 DOI: 10.1016/j.iotech.2021.100069] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Background Long-term storage of tissue slides has been reported to induce reduced biomarker (e.g. proteins and messenger RNA) detection. This study aimed to evaluate the impact of long-term storage time (0, 16, 24 and 36 weeks) and treatment conditions (non-paraffin and paraffin dipping) at 4°C on RNA quality in formalin-fixed and paraffin-embedded (FFPE) tissue sections. Materials and methods NanoString GeoMx Digital Spatial Profiling (DSP), a novel platform that allows spatial profiling, was used to profile RNA in human bladder cancer FFPE tissue sections. Results We observed excellent consistency of quantitative DSP RNA counts of all targets between two different treatment conditions (R > 0.97, Pearson correlation) at each time point and among all four different storage time points (R > 0.96, Pearson correlation) within each treatment condition. No significant difference was observed in the percentage of target genes with sufficient signal across two different treatment conditions at any time point (0 week, P = 0.96; 16 weeks, P = 0.76; 24 weeks, P = 0.96; 36 weeks, P = 0.76, Kolmogorov–Smirnov test) and across all four different storage time points (P > 0.05, Kolmogorov–Smirnov test) in either treatment condition. Conclusion Although both treatment conditions provided similar results in terms of count reproducibility and signal preservation, we recommend paraffin dipping to generate reproducible RNA results and optimize sample storage. Technology behind the NanoString GeoMx DSP platform shows a robust and reproducible RNA signal from multiple targets in the FFPE tissue sections stored at 4°C for at least up to 36 weeks. Long-term storage of FFPE sections has been reported to induce reduced antigen detection especially for RNA. This study evaluated the impact of storage times and treatment conditions on FFPE sections. The GeoMx DSP system, a novel platform that allows spatial RNA profiling, has been utilized. Long-term antigenicity preservation of quantitative DSP RNA counts was reported among storage times and treatment conditions. This finding is valuable in low resourced settings where routine access to FFPE blocks is challenging.
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Abstract
An intuitive, clinically relevant index of microbial dysbiosis as a summary statistic of subgingival microbiome profiles is needed. Here, we describe a subgingival microbial dysbiosis index (SMDI) based on machine learning analysis of published periodontitis/health 16S microbiome data. The raw sequencing data, split into training and test sets, were quality filtered, taxonomically assigned to the species level, and centered log-ratio transformed. The training data set was subject to random forest analysis to identify discriminating species (DS) between periodontitis and health. DS lists, compiled by various "Gini" importance score cutoffs, were used to compute the SMDI for samples in the training and test data sets as the mean centered log-ratio abundance of periodontitis-associated species subtracted by that of health-associated ones. Diagnostic accuracy was assessed with receiver operating characteristic analysis. An SMDI based on 49 DS provided the highest accuracy with areas under the curve of 0.96 and 0.92 in the training and test data sets, respectively, and ranged from -6 (most normobiotic) to 5 (most dysbiotic) with a value around zero discriminating most of the periodontitis and healthy samples. The top periodontitis-associated DS were Treponema denticola, Mogibacterium timidum, Fretibacterium spp., and Tannerella forsythia, while Actinomyces naeslundii and Streptococcus sanguinis were the top health-associated DS. The index was highly reproducible by hypervariable region. Applying the index to additional test data sets in which nitrate had been used to modulate the microbiome demonstrated that nitrate has dysbiosis-lowering properties in vitro and in vivo. Finally, 3 genera (Treponema, Fretibacterium, and Actinomyces) were identified that could be used for calculation of a simplified SMDI with comparable accuracy. In conclusion, we have developed a nonbiased, reproducible, and easy-to-interpret index that can be used to identify patients/sites at risk of periodontitis, to assess the microbial response to treatment, and, importantly, as a quantitative tool in microbiome modulation studies.
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Wu L, Tang AQ, Chen T, Ye XF, Li MQ, Ma T, Zhao LB. [Proteinuria associated with hookworm infection: a case report]. ZHONGGUO XUE XI CHONG BING FANG ZHI ZA ZHI = CHINESE JOURNAL OF SCHISTOSOMIASIS CONTROL 2022; 34:665-668. [PMID: 36642911 DOI: 10.16250/j.32.1374.2021179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
As a common soil-borne nematode, hookworm is mainly parasitized in the intestine, and the clinical manifestations of hookworm infections mainly include gastrointestinal symptoms and iron-deficiency anemia. In addition, hookworm may be also parasitized in other organs in addition to gastrointestinal system, resulting in development of disorders in other systems. Proteinuria caused by hookworm infections is rare and easy to be misdiagnosed in clinical practices. Hereby, the diagnosis and treatment of a case of proteinuria associated with hookworm infections was reported, in order to increase the understanding of hookworm infection-associated proteinuria among clinicians.
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Zhao X, Chen Y, Deschenes M, Wong P, Sebastiani G, Chen T, Benmassaoud A. A110 FEASIBILITY OF EUS-GUIDED PORTAL PRESSURE GRADIENT MEASUREMENT WITHOUT DEEP SEDATION: A PATH TO ACCURATE PORTAL PRESSURE DETERMINATION. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859132 DOI: 10.1093/jcag/gwab049.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Aims Hepatic venous pressure gradient (HVPG) is the gold standard for the diagnosis and staging of portal hypertension. Previous studies have shown that it underestimates pre-sinusoidal portal hypertension. Endoscopic ultrasound-guided portal pressure gradient (EUS-PPG) can safely measure direct portal vein pressure (PVP) and bridge this diagnostic gap. However, EUS-PPG has so far been performed with patients under deep sedation which can alter HVPG measurement and lead to misclassification of portal hypertension. Ketamine, a conscious sedation agent, has minimal effect on portal hemodynamics. We present our center’s experience with EUS-PPG under ketamine and low dose midazolam. Methods We retrospectively reviewed consecutive patients undergoing EUS-PPG with conscious sedation using ketamine and low-dose midazolam (<0.02 mg/kg) at the McGill University Health Centre from February to May 2021. Patients were placed in the left lateral position. Hepatic vein and portal vein were located through EUS via a trans-gastric/hepatic approach. A through the scope 25-gauge needle attached to a manometer was advanced through the liver to measure hepatic vein pressure (HVP) and portal vein pressure (PVP). Three measurements were sampled per vessel and mean pressure differences calculated to obtain PPG. PPG was considered reliable if the differences between the values was no more than 1mmHg. Results Three patients underwent EUS-PPG for evaluation of pre-sinusoidal portal hypertension. Cirrhosis was excluded in all patients based on recent liver biopsy or transient elastography. The first patient is a 69-year-old man with splenomegaly and recanalization of the paraumbilical vein on imaging. He received 80 mg of ketamine and no midazolam. HVPG measured was 1 mmHg. EUS-PPG was successful with PPG of 6 mmHg (HVP= 7 mmHg, and PVP= 13 mmHg). The second patient is a 42-year-old woman with previous sleeve gastrectomy and known with portal cavernoma. She received 120 mg of ketamine and 1 mg of midazolam. EUS-PPG was technically difficult due to respiratory movements. The measurement was not considered reliable as differences in PPG were as high as 2mmHg. In this case, PPG was 0mmHg (HVP= 15mmHg, and PVP= 15mmHg). The third patient, a 74-year-old man with hepatic steatosis and splenomegaly received 70 mg of ketamine and 1 mg of midazolam. EUS-PPG was successful (HVP= 3mmHg, PVP= 3mmHg) yielding a PPG 0mmHg. All patients tolerated the procedure well with no procedural or sedation-related complications Conclusions Our early experience suggests that EUS-PPG can be successfully and safely performed in patients under conscious sedation with ketamine and low-dose midazolam. This combination may avoid deep sedation with high dose midazolam or propofol which are known to alter accuracy of HVPG. ![]()
Measurement of HVP (left) and PVP (right) Funding Agencies None
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Chen T, Zhang Z, Lei H, Fen Z, Yuan Y, Jin X, Zhou H, Liu J, Wang W, Guo Q, Li L, Shao J. The relationship between serum 25-hydroxyvitamin-D level and sweat function in patients with type 2 diabetes mellitus. J Endocrinol Invest 2022; 45:361-368. [PMID: 34324162 DOI: 10.1007/s40618-021-01651-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 07/24/2021] [Indexed: 10/20/2022]
Abstract
AIMS The objective of this study is to explore the relationship between serum 25-hydroxyvitamin-D(25-(OH)2D3) level and sweat function in patients with type 2 diabetes mellitus (T2DM). METHODS A cross-sectional study of 1021 patients with T2DM who underwent 25-(OH)2D3 level detections and sweat function tests was carried out. These individuals were divided into deficient groups (n = 154 cases), insufficient groups (n = 593 cases) and sufficient groups (n = 274 cases). Spearman correlation analysis and multivariate stepwise linear regression analysis were implemented to determine the association of 25-(OH)2D3 level and sweat function. RESULTS The total presence of sweating dysfunction was 38.59%. Patients with a lower level of serum 25-(OH)2D3 had more severe sweat secretion impairment (P < 0.05). As the decrease of serum 25-(OH)2D3 level, the presence of sweating dysfunction increased (P < 0.05). 25-(OH)2D3 level was positively correlated with sweat function parameters, age and duration of T2DM were negatively correlated with sweat function parameter (P < 0.05). Multivariate stepwise linear regression analysis explored a significant association between serum 25-(OH)2D3 level with sweat function (P < 0.05). CONCLUSIONS Serum 25-(OH)2D3 level was positively correlated with sweat function in patients with T2DM.
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Wu XL, Xu QZ, Chen T, Wang FL, Jiang WH, Lyu GM, Lu G. [Establishment and analysis of prediction model for invasive subsolid pulmonary nodules based on radiomics]. ZHONGHUA YI XUE ZA ZHI 2022; 102:209-215. [PMID: 35042290 DOI: 10.3760/cma.j.cn112137-20210829-01965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To evaluate the best radiomic features based prediction model for identifying the histopathological subtypes of invasive adenocarcinoma or noninvasive pulmonary nodules appearing as subsolid nodules. Methods: A total of 352 patients (108 males and 244 females, median age was [M(Q1,Q3)]57 (50,65), underwent high-resolution chest CT and appearing as subsolid nodules and further treated by surgical resection whose subsequently pathological results were classified as atypical adenomatous hyperplasia (AAH), carcinoma in situ (AIS), microinvasive carcinoma (MIA), invasive adenocarcinoma (IA), from January 2015 to September 2019, in Radiology Department of Zhongda Hospital Affiliated to Southeast University and Jinling Hospital, Medical School of Nanjing University were retrospectively collected. They were divided into non-invasive group (n=233) and invasive group (n=119) according to pathological findings. According to the ratio of training set: internal test set: external test set, which is about 3∶1∶1,the patients in Zhongda Hospital Affiliated to Southeast University were randomly divided into training set (n=215, non-IA∶IA 155∶60) and internal test set(n=69, non-IA∶IA 52∶17), meanwhile a certain number of patients in Jinling Hospital, Medical School of Nanjing University(n=68, non-IA∶IA 26∶42)were randomly selected as an independent external test set. Particular quantitative parameters of the nodules, radiomic features, morphological characteristics, clinical data, and serum tumor markers were recorded. Radiomic label was constructed using LASSO regression method. The morphological model, CT model and comprehensive model were constructed by binary logistic regression and were verified in test sets, respectively. Results: Shape_MinorAxis(Gradient),Glszm_ZoneEntropy(LBP) were selected as the two most significant features based on training set. Radiomic tag=1.065 75×Shape_MinorAxis(Gradient)+0.030 58×Glszm_ZoneEntropy(LBP). Comparing the prediction performance of all models in each data cohort, the CT model (Ln(P/1-P)=-2.417 11+1.031 60×Radimic tag+1.203 06×Diameter+1.614 21×(Pleural indentation sign = Y) constructed by radiomic label, pleural depression, and quantitative parameters (diameter, average density) was much better than other models and was chosen as the optimal model, with an AUC of CT models in training cohort and test cohort was 0.954 (95%CI: 0.927-0.981), 0.865 (95%CI:0.764-0.966), better than morphological model 0.857 (95%CI:0.796-0.918), 0.818(95%CI: 0.686-0.949) and comprehensive model 0.951(95%CI: 0.921-0.981), 0.856(95%CI: 0.730-0.982), respectively. Conclusion: The integrative CT model has a better prediction efficiency for identifying invasive or noninvasive nodules appearing as subsolid nodules.
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Zhang LW, Fu LX, Wang WJ, Chen T. Use of disposable polyethylene gloves to reduce the crossinfection during noncontact dermoscopy. Clin Exp Dermatol 2021; 47:764-765. [PMID: 34854118 DOI: 10.1111/ced.15036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 11/27/2022]
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Chen T, Jiang R, Jiang L. Comment on "Influence of glycemic control and hypoglycemia on the risk of fracture in patients with diabetes mellitus: a systematic review and meta-analysis of observational studies". Osteoporos Int 2021; 32:2597-2598. [PMID: 34674022 DOI: 10.1007/s00198-021-06217-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/15/2021] [Indexed: 10/20/2022]
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Fu JH, Zhao N, Liu B, Fang XD, Chen T, Zhang M, Liu Z. [Advances in clinical application of obstruction catheter in prevention and treatment of intestinal obstruction]. ZHONGHUA WEI CHANG WAI KE ZA ZHI = CHINESE JOURNAL OF GASTROINTESTINAL SURGERY 2021; 24:931-935. [PMID: 34674470 DOI: 10.3760/cma.j.cn.441530-20200305-00120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Intestinal obstruction is one of the most common diseases in abdominal surgery, and its prevention and treatment is a clinical difficulty. Although surgical operation can solve the symptoms of obstruction, there are many postoperative complications, and it is easy to develop re-obstruction due to postoperative abdominal adhesion. The internal fixation of small intestine with obstruction catheter provides a new idea for the prevention of postoperative adhesive bowel obstruction. The use of transanal ileus catheter provides the possibility of direct intestinal anastomosis after resection of malignant obstruction in the left hemicolon and can reduce the incidence of postoperative complications. However, sufficient attention should be paid to the related complications, and prevention and treatment should be planned. It is important to note that the use of obstruction catheter is only one of the conservative treatments for bowel obstruction, and it is not a complete replacement of surgery. Surgical treatment should still be considered, if the catheter fails to significantly move, if the obstructive symptoms do not significantly improve 5 days after catheterization.
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Li S, Tang K, Khodadadi-Jamayran A, Jen J, Han H, Guidry K, Chen T, Hao Y, Fedele C, Zebala J, Maeda D, Christensen J, Olson P, Athanas A, Wong K, Neel B. OA12.03 Combined Inhibition of SHP2 and CXCR1/2 Promotes Anti-Tumor T Cell Response in NSCLC. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xu YXX, Ye YB, Chen T, Chen YJ. [Role of hepatic surgery in colorectal cancer multiple liver metastasis]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 2021; 59:816-820. [PMID: 34619906 DOI: 10.3760/cma.j.cn112139-20210608-00248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Colorectal cancer liver metastasis can be categorized as initially resectable and initially unresectable liver metastasis. Patients with initially resectable colorectal cancer liver metastases may benefit from hepatic surgery significantly,while those with initially unresectable metastases also have an opportunity to be treated radically by liver surgery after conversion therapy,so as to have a prolonged survival time. It is crucial to choose the right time and right way of surgical intervention. The timing depends on determination of tumor resectability,controlling of pre-operative systemic therapy and evaluation of liver function after systemic treatment. The selection of right way contains the election between synchronous operation and staged operation, resection margin and using of technologies such as laparoscope and associating liver partition and portal vein ligation for staged hepatectomy. This paper aims to explore the optimal timing for operation and the approaches of surgical method based on the research progress worldwide for prolonging the survival time of patients with colorectal cancer multiple liver metastases.
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Cheng SM, Liu JL, Chen T, Bi YZ, Liu KY, Wang QY, Tang HX, Yang YH, Zhang XB, Hu RR, Liu SQ, Zhang K, Kong LB, Guo DL, Shu ZF, Hong F. [Establishment of human colon cancer transplantation tumor model in normal immune mice]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2021; 43:939-943. [PMID: 34530576 DOI: 10.3760/cma.j.cn112152-20190915-00596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Establishment of a new model of human primary colon cancer transplantation tumor in normal immune mice and to provide a reliable experimental animal model for studying the pathogenesis of colon cancer under normal immunity. Methods: Human colon cancer cells come from colon cancer patients who underwent surgery in the Affiliated Hospital of Jining Medical College in 2017. The mice in the cell control group were inoculated with phosphate buffered solution (PBS) containing colon cancer cells, the microcarrier control group was inoculated with PBS containing microcarrier 6, and the cell-microcarrier complex group was inoculated with the PBS containing colon cancer cell-microcarrier complex. The cells of each group were inoculated under the skin of the right axilla of mice by subcutaneous injection, and the time, size, tumor formation rate and pathological changes under microscope were recorded. The transplanted tumor tissue was immunohistochemically stained with the EnVisiion two-step method, and the tumor formation rate of the transplanted tumor was judged according to the proportion of positive cells in the visual field. The polymerase chain reaction (PCR) method was used to detect the expression of human-specific Alu sequence in mice tumor tissue. Results: After inoculation with tumor cells, the mice in the cell control group and the microcarrier control group did not die and did not form tumors; the mice in the cell-microcarrier complex group had palpable subcutaneous tumors in the right axillary subcutaneously on the 5th to 7th days after inoculation, and tumor formation rate is 67% (10/15), and the tumor volume can reach about 500 mm(3) 2 to 3 weeks after vaccination. The immunohistochemistry results showed that CK20, CDX-2 and carcinoembryonic antigen were all positively expressed. The PCR results showed that the expression of human-specific Alu sequence can be detected in the transplanted tumor tissue of tumor-bearing mice. Conclusion: Human primary colon cancer cells used microcarrier 6 as a carrier to form tumors in normal immunized mice, and successfully established a new model of human colon cancer transplantation tumor in normal immune mice.
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Zhang LW, Wang WJ, Li CH, Chen T. Erythema multiforme after SARS-CoV-2 vaccine. J Eur Acad Dermatol Venereol 2021; 36:e32-e33. [PMID: 34547118 PMCID: PMC8656625 DOI: 10.1111/jdv.17689] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhu SY, Lin LD, Guo YD, Chen T, Shen SK, Liu ZH, Zhu YC, Zhou L. [The analysis of related factors on the unilateral aldosterone secretion in the functional diagnosis of primary aldosteronism and establishment of a predictive model]. ZHONGHUA YI XUE ZA ZHI 2021; 101:2667-2673. [PMID: 34510872 DOI: 10.3760/cma.j.cn112137-20210224-00478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To explore related factors associated with unilateral aldosterone secretion of patients with primary aldosteronism (PA) and construct a predictive model. Methods: The clinical data of patients who were diagnosed as PA in West China Hospital from April 2016 to September 2020 was analyzed retrospectively. According to the results of the adrenal enhancement CT, patients were divided into 3 groups, namely non-nodular group with no bilateral adrenal glands lesions, only with unilateral adrenal hyperplasia or bilateral adrenal hyperplasia, unilateral nodule group with unilateral adrenal nodules and the contralateral adrenal glands with hyperplasia or not, and bilateral nodules group with nodules in both adrenal glands. Regarding the related factors of dominant side of aldosterone secretion, univariate analysis and binary logistic regression were used. Receiver operating characteristic curve and nomogram were used to evaluate the diagnostic performance of regression models. Results: A total of 237 patients with PA were included, of which, 118 males and 119 females, the median age was 39 years, and the body mass index (BMI) was (25.2±3.5) kg/m2. There were 157 (66.2%) of 237 patients with typical imaging findings. There were 32 cases in no-nodular group, 183 cases in unilateral nodule group, and 22 cases in bilateral nodules group. Multivariate analysis showed that age (OR=0.876, P<0.001), blood potassium concentration (OR=0.430, P=0.004), and typical imaging findings (OR=2.202, P=0.035) were associated with unilateral aldosterone secretion. As for unilateral nodule group, multivariate analysis showed that age (OR=0.900, P<0.001), plasma aldosteronism concentration (PAC) (OR=1.050, P=0.018), and typical imaging findings (OR=2.637, P=0.025) were associated with unilateral aldosterone secretion. The agreement rate between the dominant side of the adrenal CT and AVS was only 50.2%. Multivariate analysis showed that age (OR=0.954, P=0.001), BMI (OR=0.893, P=0.024) and PAC (OR=1.043, P=0.011) were independently associated with concordance between AVS and CT. The cut-off value of the ROC curve was 0.43; the model sensitivity was 56.3%; the specificity was 86.7% and the area under the ROC curve was 0.742. Conclusions: Age is an important predictor in the diagnosis of PA subtypes. It is recommended to refer to subgroup based on imaging results for clinical decision. For patients with no obvious lesions or bilateral lesions on CT, AVS should be performed as far as possible to confirm the subtypes in diagnosis of PA.
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Ormsby E, Chen T, Harrison G, Lopez A, Stejskal A, Van Wie J, Viana T, Vineis M, Policastro P. Feud of the Features: Which Instagram Feature Generates the Greatest College Student Participation in Nutrition Games? J Acad Nutr Diet 2021. [DOI: 10.1016/j.jand.2021.06.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Guo J, Chen T, Miao J, Chen H, Huang M. 636P A comparative analysis of prostate cancer short-term recurrence risk forecast performance between 8-gene signature and commercial panels. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Liu Z, Yang C, Chen T, Cai W, Liu L, Kang L, Wang Z, Li X, Zhang W, Li Y. Influence of discharge plasma modification on physical properties and resultant densification mechanism of spherical titanium powder. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Totti S, Kluxen F, Toner F, Page L, Maas W, Webbley K, Nagane R, Valentine C, Kendrick J, Mingoia R, Whitfield C, Dorange J, Egron C, Imart C, Felkers E, Domoradzki J, Darraji B, McEuen S, Fisher P, Lorez C, Parr-Dobrzanksi R, Chen T, Wiemann C. An in vitro dermal absorption study ring trial with 14C-Caffeine according to OECD test guideline 428. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00816-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Guan X, Cai S, Wu X, Chen Y, Deng H, Zhong X, Chen T, Huang M. 995P A pan-cancer analysis of KMT2D as a potential biomarker for immune checkpoint therapy. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Dong RQ, Deng DD, Chen T, Zhou YF, Yang JH, Xia L. [Ventricular tachycardia risk stratification of a cardiomyopathy patient using computational cardiac modeling and stimulation technology: a case report]. ZHONGHUA XIN XUE GUAN BING ZA ZHI 2021; 49:825-827. [PMID: 34404196 DOI: 10.3760/cma.j.cn112148-20201115-00911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
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Zhang H, Chen T, Zhao W, Zhang Y, Tang L, Xu B, Chen X. Identification of crucial genes in aortic dissection by WGCNA. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chen T, Tracy S, Uno H. OptBand: optimization-based confidence bands for functions to characterize time-to-event distributions. LIFETIME DATA ANALYSIS 2021; 27:481-498. [PMID: 33847858 PMCID: PMC8238757 DOI: 10.1007/s10985-021-09522-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
Classical simultaneous confidence bands for survival functions (i.e., Hall-Wellner, equal precision, and empirical likelihood bands) are derived from transformations of the asymptotic Brownian nature of the Nelson-Aalen or Kaplan-Meier estimators. Due to the properties of Brownian motion, a theoretical derivation of the highest confidence density region cannot be obtained in closed form. Instead, we provide confidence bands derived from a related optimization problem with local time processes. These bands can be applied to the one-sample problem regarding both cumulative hazard and survival functions. In addition, we present a solution to the two-sample problem for testing differences in cumulative hazard functions. The finite sample performance of the proposed method is assessed by Monte Carlo simulation studies. The proposed bands are applied to clinical trial data to assess survival times for primary biliary cirrhosis patients treated with D-penicillamine.
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Jia SX, Han MQ, Wang CX, Mou QN, Zhao JM, Chen T, Gao Q, Guo YC. Accuracy of Nolla Method for Age Estimation of Northern Chinese Han Children. FA YI XUE ZA ZHI 2021; 37:181-186. [PMID: 34142478 DOI: 10.12116/j.issn.1004-5619.2020.200409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Indexed: 11/30/2022]
Abstract
Abstract Objective To study the accuracy of Nolla method for age estimation of Northern Chinese Han children aged between 5.00 and 14.99 years based on original transformation tables and multiple regression model. Methods A total of 2 000 orthopantomographs (OPGs) were collected from the Hospital of Stomatology, Xi'an Jiaotong University, including 1 000 males and 1 000 females. Development stage of 7 left mandibular permanent teeth (except third molars) was assessed based on Nolla method, then age estimation was conducted through transformation tables and multiple regression model, respectively. Firstly, the development stage results of 7 permanent teeth were added up and the estimated age was obtained through the original transformation tables. Secondly, 80% of the samples (80 males and 80 females in each age group) were randomly selected from 2 000 OPGs as the train set. The chronological age of the selected patients was taken as the dependent variable, while gender and the development stage results of 7 permanent teeth were taken as the independent variable to establish multiple regression model. The remaining 20% of the samples were substituted into the model as the test set, to verify the accuracy of age estimation by multiple regression model. Results Mean chronological ages of males and females were 10.03±0.09 years and 10.01±0.09 years, respectively. The age estimated by original transformation tables showed an overestimation for males (0.18 years on average) and an underestimation for females (0.02 years on average), with mean absolute error (MAE) of 0.94 years and 0.97 years, respectively. While the results by multiple regression model showed that males were overestimated by 0.06 years on average and females were underestimated by 0.02 years on average. The MAE was 0.66 years and 0.77 years, respectively. Conclusion The Nolla method is suitable for age estimation of Northern Chinese Han children. Compared with the original transformation tables method, the multiple regression model is more accurate for age estimation.
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Xie N, Fu WH, Zhu BQ, Wang TM, Chen T, Zhupaerguli H, Xu L, Shao ZJ, Cui Y. [Epidemiological and Etiologic characteristics of Meningococcal meningitis in Xinjiang Uygur Autonomous Region,1960-2019]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2021; 42:1037-1043. [PMID: 34814503 DOI: 10.3760/cma.j.cn112338-20201118-01336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To understand the epidemiological and etiologic characteristics of meningococcal meningitis in Xinjiang Uygur Autonomous Region (Xinjiang). Methods: The epidemiological data about the meningococcal meningitis cases in Xinjiang from 1960 to 2019 were collected from the China information system for disease control and prevention and the Center for Disease Control and Prevention of Xinjiang. The epidemiological characteristics were analyzed. Clinical specimens from suspected cases were cultured and tested by real-time PCR method. A survey on the carriage rate of Neisseria meningitides (Nm) in the healthy population was performed. The serogroups of isolates were determined by serum-agglutination and PCR methods. Multi-locus sequence typing was used for subtyping the isolates. Results: The incidence rates of meningococcal meningitis in Xinjiang from 1960 to 2019 were 0.02/100 000-81.32/100 000, with the mortality as 1.05%-20.78%. The five districts with the most cases were Kashi prefecture, Aksu prefecture, Urumqi city, Changji Hui autonomous prefecture, and Hotan prefecture. Before 1990, serogroup A (81.82%) was the commonest group for cases and contacts. After 1990, 14.00% of the cases were caused by serogroups B, C, W, and Y. There was no predominant serogroup for contacts with serogroups B, C, W, Y, and C accounting for 23.28%, 18.53%, 15.52%, 9.91% and 7.33% respectively. The general Nm carriage rate was 15.50%, with the population of 16 - 20 years age group having the highest rate (25.53%). Serogroups B (52.11%), W (20.66%), C (12.21%), and Y (9.39%) occupied 52.11%, 20.66%, 12.21% and 9.39% respectively. The commonest clonal lineages of Nm isolates were ST-4821, ST-175, and ST-5 clonal complexes, while the ST-5 and ST-4821 clonal complexes were the major ones for invasive strains. Conclusions: There appeared regional differences in the incidence rates of Xinjiang meningococcal meningitis, and the carriage rate of Nm was high. The serogroups have been changing. It is necessary to strengthen the prevention and control of meningococcal meningitis to prevent any potential outbreak.
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