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Gu H, Wang J, Ran W, Li G, Hu S, Zhao H, Wang X, Wang J. Anaplastic and poorly differentiated thyroid carcinomas: genetic evidence of high-grade transformation from differentiated thyroid carcinoma. J Pathol Clin Res 2024; 10:e356. [PMID: 38602501 PMCID: PMC10796291 DOI: 10.1002/cjp2.356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/17/2023] [Accepted: 11/30/2023] [Indexed: 04/12/2024]
Abstract
Anaplastic thyroid carcinoma (ATC) is the most advanced and aggressive thyroid cancer, and poorly differentiated thyroid carcinoma (PDTC) lacks anaplastic histology but has lost architectural and cytologic differentiation. Only a few studies have focused on the genetic relationship between the two advanced carcinomas and coexisting differentiated thyroid carcinomas (DTCs). In the present study, we investigated clinicopathologic features and genetic profiles in 57 ATC and PDTC samples, among which 33 cases had concomitant DTC components or DTC history. We performed immunohistochemistry for BRAF V600E, p53, and PD-L1 expression, Sanger sequencing for TERT promoter and RAS mutations, and fluorescence in situ hybridization for ALK and RET rearrangements. We found that ATCs and PDTCs shared similar gene alterations to their coexisting DTCs, and most DTCs were aggressive subtypes harboring frequent TERT promoter mutations. A significantly higher proportion of ATCs expressed p53 and PD-L1, and a lower proportion expressed PAX-8 and TTF-1, than the coexisting DTCs. Our findings provide more reliable evidence that ATCs and PDTCs are derived from DTCs.
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Affiliation(s)
- Haiyan Gu
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoPR China
| | - Jingnan Wang
- Department of PathologySchool of Basic Medicine, Qingdao UniversityQingdaoPR China
| | - Wenwen Ran
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoPR China
| | - Guangqi Li
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoPR China
| | - Shasha Hu
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoPR China
| | - Han Zhao
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoPR China
| | - Xiaonan Wang
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoPR China
| | - Jigang Wang
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoPR China
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Xu P, Huang Y, Ran W, Wan S, Guo C, Su X, Yuan L, Dan Y. State of health estimation of LIB based on discharge section with multi-model combined. Heliyon 2024; 10:e25808. [PMID: 38384580 PMCID: PMC10878932 DOI: 10.1016/j.heliyon.2024.e25808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 01/07/2024] [Accepted: 02/02/2024] [Indexed: 02/23/2024] Open
Abstract
Accurate estimation of a battery's state of health (SOH) is essential in battery management systems (BMS). This study considers a complete analysis of combining incremental capacity (IC), differential thermal voltammetry (DTV), and differential temperature (DT) for SOH prediction in cases of discharge. Initially, the IC, DTV, and DT curves were derived from the current, voltage, and temperature datasets, and these curves underwent smoothing through the application of Lowess and Gaussian techniques. Subsequently, discerning healthy features were identified within the domains where the curve exhibited substantial phase transitions. Utilizing Pearson correlation analysis, features exhibiting the utmost correlation with battery capacity degradation were singled out. Finally, the state-of-health (SOH) prediction model was constructed using a bidirectional long short-term memory (BILSTM) neural network. Two datasets were used to validate the model, and the experimental results demonstrated that the SOH prediction had a root mean square error (RMSE) below 1.2% and mean absolute error (MAE) below 1%, which verified the feasibility and accuracy. This approach quantifies the internal electrochemical reactions of a battery using externally measured data, further enabling early SOH predictions.
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Affiliation(s)
- Peng Xu
- School of Electrical and Electronics Engineering, Chongqing University of Technology, Banan, Chongqing, 400054, China
| | - Yuan Huang
- School of Electrical and Electronics Engineering, Chongqing University of Technology, Banan, Chongqing, 400054, China
| | - Wenwen Ran
- School of Electrical and Electronics Engineering, Chongqing University of Technology, Banan, Chongqing, 400054, China
| | - Shibin Wan
- School of Electrical and Electronics Engineering, Chongqing University of Technology, Banan, Chongqing, 400054, China
| | - Cheng Guo
- School of Electrical and Electronics Engineering, Chongqing University of Technology, Banan, Chongqing, 400054, China
| | - Xin Su
- School of Electrical and Electronics Engineering, Chongqing University of Technology, Banan, Chongqing, 400054, China
| | - Libing Yuan
- School of Electrical and Electronics Engineering, Chongqing University of Technology, Banan, Chongqing, 400054, China
| | - Yuanhong Dan
- School of Computer Science and Technology, Chongqing University of Technology, Banan, Chongqing, 400054, China
- Nanjing University of Science and Technology, Xuanwu, Nanjing, China
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Song Y, Ran W, Jia H, Yao Q, Li G, Chen Y, Wang X, Xiao Y, Sun M, Lu X, Xing X. Next-generation sequencing-based analysis of homologous recombination repair gene variant in ovarian cancer. Heliyon 2024; 10:e23684. [PMID: 38298632 PMCID: PMC10827683 DOI: 10.1016/j.heliyon.2023.e23684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 11/28/2023] [Accepted: 12/09/2023] [Indexed: 02/02/2024] Open
Abstract
Background Ovarian cancer is the leading cause of death from gynecological malignancies. Investigating the HRR-related gene status, notably BRCA1/2 in different regions and populations is of great significance for formulating accurate target therapy. Methods We collected 124 ovarian cancer cases from the Affiliated Hospital of.Qingdao University, detected the genomic alteration of 32 genes by NGS, including.19 HRR-related genes, 9 proto-oncogenes and 4 tumor suppressor genes. Clinicopathological characteristics, variants, clinical significance, and correlation with prognosis were analyzed. Results The incidence of HRR-related gene mutation was 59.68 % and no statistical significance was found with multiple clinicopathological characteristics. BRCA1/2 (27.42 %) were the most frequent mutated HRR genes. 23 (18.55 %) cases harbored gBRCA1/2 mutation, with all BRCA1 mutations were pathogenic/likely pathogenic and 2 cases of BRCA2 mutation was variant of uncertain significance. Somatic BRCA1/2 mutations were found in 12 (9.68 %) cases, and sBRCA1/2 had a higher frequency in less common ovarian cancer than high-grade serous carcinoma. HRR-related gene mutation status was associated with better prognosis than HRR wild-type. Conclusions Somatic BRCA1/2 mutation has higher incidence in less common ovarian cancer. HRR gene mutation status is an independent prognosis factor in ovarian cancer. Clarifying the HRR gene status is important for the selection of target therapy as well as the evaluation of prognosis.
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Affiliation(s)
- Yaolin Song
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Wenwen Ran
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Huiqing Jia
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Qin Yao
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Guangqi Li
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Yang Chen
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Xiaonan Wang
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Yujing Xiao
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Mengqi Sun
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Xiao Lu
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
| | - Xiaoming Xing
- Department of Pathology, The Affiliated Hospital of Qingdao University, NO.16 Jiangsu Road, Qingdao, China
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Song Y, Li G, Ju K, Ran W, Zhao H, Liu X, Hou M, He Y, Chen Y, Zang G, Xing X. Mesenchymal-Epithelial Transition Exon 14 Skipping Mutation and Amplification in 5,008 Patients With Lung Cancer. Front Oncol 2021; 11:755031. [PMID: 34660325 PMCID: PMC8515048 DOI: 10.3389/fonc.2021.755031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 09/10/2021] [Indexed: 11/13/2022] Open
Abstract
Background Lung cancer is a major health concern worldwide because of its increasing incidence and mortality. This study aimed to clarify the association between mesenchymal-epithelial transition (MET) genomic alterations and clinical characteristics of lung cancer. Method We collected data from 5,008 patients with lung cancer diagnosed and treated between January 2017 and July 2021 at the Affiliated Hospital of Qingdao University. Genomic alterations in the MET gene, including the exon 14 skipping mutation and amplification, were detected using amplification refractory mutation system-polymerase chain reaction (2,057 cases) and next-generation sequencing (2,951 cases). Clinical characteristics such as age, sex, tumor location, tumor stage, smoking, pleural invasion, and histology were statistically analyzed for MET exon 14 skipping mutation and amplification. The DNA splicing sites causing the MET exon 14 skipping mutation at the mRNA level were also investigated. Results The incidence of the MET exon 14 skipping mutation was 0.90% (41/4,564) in adenocarcinoma, 1.02% (3/294) in squamous cell carcinoma, and 8.33% (1/12) in sarcomatoid carcinoma specimens. It was more frequently observed in patients over 60 years of age than the MET exon 14 skipping mutation wildtype. The MET exon 14 skipping mutation co-occurred with epidermal growth factor receptor (EGFR) L858R, EGFR 19-Del, and BRAF V600E mutations. At the DNA level, single nucleotide mutation and small fragment deletion (1-38 base pairs) upstream and downstream of MET exon 14 led to MET exon 14 skipping mutation at the mRNA level. MET amplification occurred in 0.78% (21/2,676) adenocarcinoma and 1.07% (2/187) squamous cell carcinoma specimens and was significantly associated with advanced tumor stages (III + IV) compared to the MET amplification wildtype. MET amplification primarily co-occurred with the EGFR mutation. Conclusions Our study found that MET genomic alterations were statistically related to age and tumor stage and co-existed with mutations of other oncogenic driver genes, such as EGFR and BRAF. Moreover, various splicing site changes at the DNA level led to the exon 14 skipping mutation at the mRNA level. Further studies are required to clarify the association between MET genomic alterations and prognosis.
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Affiliation(s)
- Yaolin Song
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Guangqi Li
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Kun Ju
- Department of Emergency, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenwen Ran
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Han Zhao
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xianglan Liu
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mingyu Hou
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yulu He
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yang Chen
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Guoliang Zang
- Department of Technical, Geneis Beijing Co., Ltd., Beijing, China
| | - Xiaoming Xing
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
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Zhang T, Yan Y, Xue Y, Xiong S, Ran W, Xu Q. Pharmacokinetic study of hypaphorine, a potential agent for treating osteoclast-based bone loss, on rats using LC-MS/MS. Comb Chem High Throughput Screen 2021; 25:1889-1896. [PMID: 34610780 DOI: 10.2174/1386207325666211005144429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/01/2021] [Accepted: 09/08/2021] [Indexed: 11/22/2022]
Abstract
AIM AND OBJECTIVE A high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of hypaphorine, a potential agent for treating osteoclast-based bone loss, was developed and valadated in rat plasma. MATERIALS AND METHODS Plasma samples were pretreated by the protein precipitation. Chromatographic separation was performed using an Inertsil ODS-3 column (50 mm × 4.6 mm, 5 μm). The mobile phase consisted of water (containing 0.1% formic acid) and acetonitrile in a gradient mode at a flow rate of 0.5 mL/min. The acquisition was carried out in selected reaction monitoring (SRM) of the transitions from protonated precursor ion [M + H]+ to the particular daughter ion and the mass transitions of hypaphorine and IS were 247 → 188 and m/z 219 → 188, respectively. The method was validated in terms of selectivity, linearity, accuracy and precision, extraction recovery and matrix effect, stability and carryover. RESULTS It showed good linearity over the range of 1-2000 ng/mL (R2 = 0.9978). The intra-batch accuracy was within 93.95-105.81% and the precision was within 4.92-11.53%. The inter-batch accuracy was within 96.18-100.39% with a precision of 6.22-11.23%. The extraction recovery and matrix factors were acceptable. CONCLUSION The simple and rapid method was successfully applied to the pharmacokinetics study in rats following oral administration of hypaphorine at the doses of 0.5, 1.5, and 4.5 mg/kg.
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Affiliation(s)
- Taiyuan Zhang
- Department of Traumatic Orthopaedics, Affiliated Jinan Third Hospital of Jining Medical University, Jinan, 250132, China
| | - Yan Yan
- Department of Paediatrics, Affiliated Jinan Third Hospital of Jining Medical University, Jinan, 250132, China
| | - Yutao Xue
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250117, China
| | - Shan Xiong
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250117, China
| | - Wenwen Ran
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250117, China
| | - Qiao Xu
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250117, China
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Li B, Wang J, Dou X, Zhang X, Xue X, Xu Q, Ran W, Xiong S. Development and Validation of a LC-MS/MS Method for Quantification of Mobocertinib (TAK-788) in Plasma and its Application to Pharmacokinetic Study in Rats. Comb Chem High Throughput Screen 2021; 24:1410-1416. [DOI: 10.2174/1386207323999201103215736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/29/2020] [Accepted: 10/15/2020] [Indexed: 11/22/2022]
Abstract
Aim and Objective:
An analytical method for the determination of mobocertinib, an investigational tyrosine kinase inhibitor, was
developed and optimized by high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) in rat plasma.
Materials and Methods:
Plasma samples were pretreated by the protein precipitation method with a methanol solution of osimertinib as the
internal standard (IS). Chromatographic separation was performed using an Inertsil ODS-3 column (50 mm × 4.6 mm, I.D. 5 μm) column
with the temperature maintained at 40 °C. The mobile phase consisted of water (containing 0.1% formic acid) and methanol in a gradient
mode at a flow rate of 0.5 mL/min. Mass spectrometric detection was carried out in the selected reaction monitoring (SRM) mode with positive
electrospray ionization, and the mass transitions of mobocertinib and osimertinib were m/z 587.01 → 71.88 and m/z 499.80 → 71.94,
respectively. The method was validated in terms of selectivity, linearity, accuracy and precision, extraction recovery and matrix effect, stability
and carryover as per the guidelines for bioanalytical method validation (FDA, 2018). The method was applied to the pharmacokinetic
study of mobocertinib in rats by oral gavage at the doses of 2, 6, and 18 mg/kg. A total of 216 plasma samples from 18 rats were analyzed.
Results:
It showed good linearity over the range of 1-1000 ng/mL (R2 = 0.9957). The intra-batch accuracy was within 94.65-102.59% and
the precision was within 5.49-10.46%. The inter-batch accuracy was within 97.08-102.25% with a precision of 7.54-10.13%. The extraction
recovery and matrix factor were acceptable for the bioanalysis of mobocertinib. Additionally, mobocertinib was found to be stable under the
detected conditions. Mobocertinib showed linear pharmacokinetic characteristics following oral administration to rats at 2.0-18.0 mg/kg.
Conclusion:
The developed and validated method was successfully employed in the pharmacokinetic study in rats following oral administration
of mobocertinib at the doses of 2, 6, and 18 mg/kg.
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Affiliation(s)
- Bo Li
- Department of Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Jin Wang
- Maternal and Child Health Care Hospital of Shandong Province, Jinan, Shandong 250014, China
| | - Xinyao Dou
- Shandong Experimental High School, Jinan, Shandong 250001, China
| | - Xinjie Zhang
- Shandong Experimental High School, Jinan, Shandong 250001, China
| | - Xianbei Xue
- Wanxiang Xintian School of Licheng District, Jinan City, Jinan, Shandong 250001, China
| | - Qiao Xu
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China
| | - Wenwen Ran
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China
| | - Shan Xiong
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China
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Ran W, Chen X, Wang B, Yang P, Li Y, Xiao Y, Wang X, Li G, Wang L, Han Y, Peng Y, Lang J, Liang Y, Xiao Y, Lu Q, Lin H, Tian G, Yuan D, Deng C, Yang J, Xing X. Whole-exome Sequencing of Tumor-only Samples Reveals the Association between Somatic Alterations and Clinical Features in Pancreatic Cancer. Curr Bioinform 2021. [DOI: 10.2174/1574893615999200626190346] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Identification of genomic markers using NGS (next-generation sequencing)
technology would be valuable for guiding precision medicine treatments for pancreatic cancers.
Traditional somatic mutation methods require both tumor and matched non-tumor samples.
However, only tumor samples are available mostly, especially in retrospective studies. In this study,
we tried to analyze the associations between clinical features and oncogenic somatic mutations in
genome-wide tumor-only samples.
Methods:
Fifty-four tumor-only samples derived from pancreatic cancer patients were used for
whole-exome sequencing. An approach involving SNP filtering of variants included in the
Catalogue of Somatic Mutations in Cancer (COSMIC) database was used to identify oncogenic
somatic mutations. The relationships between oncogenic mutations and clinical features were
analyzed and simultaneously compared with those from the TCGA database.
Results:
By analyzing the mutations from tumor only samples, divergent mutation profiles were
observed in different locations (head vs. body/tail) of pancreatic tumors. The divergences between
pancreatic head and body/tail cancers were also confirmed by the TCGA data. Furthermore,
mutations of several genes were found to be significantly associated with clinical features, such as
pathological stage and the degree of tumor differentiation.
Conclusion:
The results confirmed the efficiency of our approach in identifying oncogenic somatic
mutations from tumor only samples and revealed the associations between somatic mutations and
clinical features in pancreatic cancer.
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Affiliation(s)
- Wenwen Ran
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | | | - Bo Wang
- Geneis Beijing Co., Ltd., Beijing 100102, China
| | - Ping Yang
- Department of Pathology, Yantai Yuhuangding Hospital, Yantai 264000, China
| | - Yongxing Li
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yujing Xiao
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Xiaonan Wang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Guangqi Li
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lili Wang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yingmin Han
- Geneis Beijing Co., Ltd., Beijing 100102, China
| | | | - Jidong Lang
- Geneis Beijing Co., Ltd., Beijing 100102, China
| | | | - Yupei Xiao
- Geneis Beijing Co., Ltd., Beijing 100102, China
| | - Qingqing Lu
- Geneis Beijing Co., Ltd., Beijing 100102, China
| | - Huixin Lin
- Geneis Beijing Co., Ltd., Beijing 100102, China
| | - Geng Tian
- Geneis Beijing Co., Ltd., Beijing 100102, China
| | - Dawei Yuan
- Geneis Beijing Co., Ltd., Beijing 100102, China
| | | | | | - Xiaoming Xing
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
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Li D, Ding L, Ran W, Huang Y, Li G, Wang C, Xiao Y, Wang X, Lin D, Xing X. Status of 10 targeted genes of non-small cell lung cancer in eastern China: A study of 884 patients based on NGS in a single institution. Thorac Cancer 2020; 11:2580-2589. [PMID: 32729257 PMCID: PMC7471050 DOI: 10.1111/1759-7714.13577] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/26/2020] [Accepted: 06/28/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The status of targeted genes and the association between targeted genes and clinicopathological features in Chinese lung cancer patients remains to be elucidated. METHODS The status of 10 targeted genes was evaluated by next-generation sequencing (NGS) in 884 non-small cell lung cancer (NSCLC) patients. The relationship between gene alterations and clinicopathological characters was analyzed. RESULTS Overall, 684 (77.4%) patients harbored gene alterations, and EGFR (510, 57.7%) was found to be the most common type of mutation followed by KRAS (91, 10.3%), HER2 (38, 4.3%), PIK3CA (32, 3.6%), ALK (21, 2.4%), BRAF (10, 1.1%), ROS1 (5, 0.6%), RET (5, 0.6%), MET (4, 0.5%) and NRAS (1, 0.1%). Gene alterations were more frequent in females, non-smokers and adenocarcinoma (P < 0.001). EGFR mutations were associated with women, non-smokers, normal level of serum tumor markers, and adenocarcinoma (P < 0.001). Patients without lymph node metastasis (P = 0.012), or early stage disease (P < 0.001) exhibited a higher EGFR mutation rate. KRAS mutations tended to arise in men (P < 0.001), smokers (P < 0.001) and patients with higher levels of serum tumor markers (P = 0.048). A mucus-producing component was associated with KRAS (P < 0.001), ROS1 (P = 0.033) and ALK (P < 0.001) alterations. ALK and ROS1 rearrangements were more frequent in micropapillary structures (P = 0.004, P = 0.012). BRAF mutation was associated with advanced disease patients and micropapillary structure (P < 0.001). PIK3CA mutation was more likely to be found in elderly patients (P = 0.014). Some patients had synchronous gene alterations, including EGFR/PIK3CA, EGFR/HER2, HER2/KRAS, EGFR/KRAS, EGFR/ROS1, EGFR/NRAS, KRAS/PIK3CA, KRAS/PIK3CA/HER2. CONCLUSIONS Most patients had at least one genetic alteration, and individual patients harbored synchronous mutation. Each gene alteration had unique clinicopathological characteristics. KEY POINTS SIGNIFICANT FINDINGS OF THE STUDY: This study revealed the frequency and distribution of 10 targeted gene abnormalities and their association with clinicopathological parameters of Chinese non-small cell lung cancer (NSCLC) patients in eastern China. WHAT THIS STUDY ADDS Some rare synchronous mutations were detected in our study by next-generation sequencing (NGS).
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Affiliation(s)
- Dan Li
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Li Ding
- Medical Affairs DepartmentThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Wenwen Ran
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Yan Huang
- Department of Human ResourcesThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Guangqi Li
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Chengqin Wang
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Yujing Xiao
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Xiaonan Wang
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Dongliang Lin
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Xiaoming Xing
- Department of PathologyThe Affiliated Hospital of Qingdao UniversityQingdaoChina
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Wang L, Hu S, Xin F, Zhao H, Li G, Ran W, Xing X, Wang J. MED12 exon 2 mutation is uncommon in intravenous leiomyomatosis: clinicopathologic features and molecular study. Hum Pathol 2020; 99:36-42. [PMID: 32240666 DOI: 10.1016/j.humpath.2020.03.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/01/2020] [Accepted: 03/25/2020] [Indexed: 12/23/2022]
Abstract
Intravenous leiomyomatosis (IVL) is a rare neoplasm that is characterized by smooth muscle cell proliferation within venous vessels. The aim of this study is to investigate the clinicopathological features, immunophenotypes, and MED12 gene mutations in IVL. Nine cases of IVL from the Affiliated Hospital of Qingdao University were collected, and the clinicopathological features were reviewed. The immunohistochemical expressions of p16, phosphatase and tensin homolog deleted on chromosome 10 (PTEN), alpha thalassemia/mental retardation syndrome X-linked (ATRX), retinoblastoma 1 (RB1), fumarate hydratase (FH), and p53, were evaluated. The mutation status of MED12 gene exon 2 was detected by Sanger sequencing. All the 9 patients were women ranging from 32 to 58 years, and uterine leiomyomas were identified in 5 patients. Immunohistochemical staining showed that all IVL and leiomyoma samples were positive for estrogen receptor and progesterone receptor, but negative for CD34. IVL displayed similar immunostaining patterns with their uterine counterparts with focal p16 immunostaining. FH, PTEN, ATRX, and RB1 were variably positive, and p53 and Ki-67 positive rates were less than 5% in all cases. Two novel genetic variations at MED12 exon 2, a synonymous mutation c.141C>T (p.Asn47=), and an in-frame deletion mutation c.133_147del15 (p.Phe45_Pro49del) were identified in two IVL cases. One missense mutation c.131G>A (p.Gly44Asp) was identified in one uterine leiomyoma. The remaining 11 tumor samples (7 IVL cases and 4 uterine leiomyomas) showed no mutations at MED12 exon 2. Our results showed two novel MED12 mutations in IVL. The MED12 mutations are different between IVL and uterine leiomyoma. These findings indicate that IVL is a unique entity and different from uterine leiomyoma.
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Affiliation(s)
- Lili Wang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Shasha Hu
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Fangjie Xin
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Han Zhao
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Guangqi Li
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Wenwen Ran
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Xiaoming Xing
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266555, China.
| | - Jigang Wang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao 266555, China.
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Song Y, Wang L, Ran W, Li G, Xiao Y, Wang X, Zhang L, Xing X. Effect of Tumor Location on Clinicopathological and Molecular Markers in Colorectal Cancer in Eastern China Patients: An Analysis of 2,356 Cases. Front Genet 2020; 11:96. [PMID: 32161617 PMCID: PMC7052354 DOI: 10.3389/fgene.2020.00096] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/28/2020] [Indexed: 12/12/2022] Open
Abstract
Colorectal cancer (CRC) has become a major health concern in China due to its increasing incidence and mortality. This study aimed to clarify the relationship between tumor locations and the clinicopathological molecular marker features in eastern China CRC patients. We continuously collected data on 2,356 CRC patients who underwent surgical resection from January 2017 to April 2019. Right-sided colorectal cancer (RCC), was located from the cecum to the transverse colon and left-side colorectal cancer (LCRC) was located from the splenic flexure to the rectum. The clinicopathological indices (including age, sex, pTNM stage, mucinous production, and distant metastasis) and frequency of molecular markers such as KRAS, NRAS, BRAF, and microsatellite instability (MSI) were statistically analyzed between the RCC and LCRC groups. The associations between clinicopathological characters and molecular markers were also investigated. LCRC and RCC proportions in eastern China CRC patients were 81.75% and 18.25%, respectively. RCC (vs. LCRC) was more frequently observed with higher frequencies of MSI-high (MSI-H) and BRAF mutations in female and younger patients, and was closely associated with metastasis, poor differentiation, and mucinous tumors. Tumor location also showed significant differences in bowel wall infiltration degree and pTNM stage. Mutation rates of KRAS, NRAS, MSI, and BRAF were 40.15%, 3.85%, 6.31%, and 2.30%, respectively. Patients with a KRAS mutation tended to be female, had mucinous, perineural invasive, and polypoid tumor. Those with NRAS mutation tended to develop well-differentiated ulcerative tumors. The BRAF mutation was more relevant with lymph node involvement, deeper infiltration of the bowel wall, mucinous, poorly-differentiated tumor with thrombus, and perineural invasion. Furthermore, MSI-H was more commonly found in younger patients with deeper bowel wall infiltration and a poorly-differentiated polypoid tumor, whereas MSS patients tended to develop lymph node involvement, and a mucinous and perineural invasive tumor. In our study, we found that LCRC and RCC showed different features on the clinicopathological and molecular markers in eastern China CRC patients. Since our data differ from those of Western countries and other regions in China, further studies are required to clarify the regional differences of the clinicopathological and molecular markers in CRC patients.
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Affiliation(s)
- Yaolin Song
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lili Wang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenwen Ran
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Guangqi Li
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yujing Xiao
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaonan Wang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Li Zhang
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoming Xing
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
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Zhang X, Wu J, Wang L, Zhao H, Li H, Duan Y, Li Y, Xu P, Ran W, Xing X. HER2 and BRAF mutation in colorectal cancer patients: a retrospective study in Eastern China. PeerJ 2020; 8:e8602. [PMID: 32095377 PMCID: PMC7023828 DOI: 10.7717/peerj.8602] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 01/19/2020] [Indexed: 12/11/2022] Open
Abstract
Objective To investigate the frequency and prognostic role of the human epidermal growth factor receptor 2 gene (HER2) and BRAF V600E gene mutation in Chinese patients with colorectal cancer (CRC). Methods Clinicopathological and survival information from 480 patients with stage I–III CRC were reviewed and recorded. HER2 amplification was analyzed by immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH), BRAF V600E mutation was tested by IHC and Sanger sequencing. The relationship between HER2 and BRAF V600E mutation status and clinicopathological characteristics and outcomes were determined. Results The amplification of HER2 and BRAF V600E mutation were identified in 27 of 480 (5.63%) and 19 of 480 (3.96%) CRC patients, respectively. HER2 amplification significantly correlated with greater bowel wall invasion (P = 0.041) and more advanced TNM stage (I vs. II vs. III; 0 vs 5.78% vs. 7.41%, P = 0.013). Patients suffering from tumors with poor differentiation had a higher incidence rate of BRAF V600E mutation than those with moderate/well differentiation (7.77% vs 2.92%, P = 0.04). HER2 amplification was an independent prognostic factor for worse disease-free survival (DFS) (HR = 2.53, 95% CI: 1.21–5.30, P = 0.014). Conclusion The prevalence of HER2 amplification and BRAF V600E mutation in stage I–III CRC patients in Chinese was 6% and 4%, respectively, and HER2 amplification appeared to be associated with a worse DFS. More comprehensive molecular classification and survival analysis are needed to validate our findings.
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Affiliation(s)
- Xiangyan Zhang
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jie Wu
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lili Wang
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Han Zhao
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hong Li
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yuhe Duan
- Department of Pediatrics, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yujun Li
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ping Xu
- Department of Obstetrics, Laixi People's Hospital, Qingdao, China
| | - Wenwen Ran
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoming Xing
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
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12
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Luo Y, Wang L, Ran W, Li G, Xiao Y, Wang X, Zhao H, Xing X. Overexpression of SAPCD2 correlates with proliferation and invasion of colorectal carcinoma cells. Cancer Cell Int 2020; 20:43. [PMID: 32055236 PMCID: PMC7006392 DOI: 10.1186/s12935-020-1121-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/22/2020] [Indexed: 12/13/2022] Open
Abstract
Background Suppressor anaphase-promoting complex domain containing 2 (SAPCD2) is a novel gene playing important roles in the initiation, invasion, and metastasis of several malignancies. However, its role in colorectal carcinoma (CRC) still remains unclear. Method In this study, we investigated the expression and biological function of SAPCD2 in CRC. Immunohistochemistry (IHC) for SAPCD2 was performed in 410 pairs of CRC specimens and corresponding normal epithelial tissues, and in 50 adenoma tissues. Clinical pathological factors were analyzed in relation to the expression of SAPCD2. The biological functions of SAPCD2 in CRC cells and its effect on cell cycle were investigated in vitro and in vivo through gain/loss-of-function approaches. Results IHC showed that SAPCD2 expression was significantly higher in CRC tissues compared to adenoma and normal epithelium tissues and was correlated with tumor location (p = 0.018). SAPCD2 significantly promoted cell proliferation, migration, and invasion both in vitro and in vivo (p < 0.05). In addition, SAPCD2 knockdown in CRC cells was associated with reduced G1/S transition, while overexpression caused G2/M phase arrest (p < 0.05). Conclusions In sum, SAPCD2 is overexpressed in CRC tissues and plays a critical role in CRC progression. Therefore, it might represent a promising therapeutic target for CRC treatment.
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Affiliation(s)
- Yage Luo
- 1Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000 Shandong People's Republic of China.,2Department of Pathology, Qingdao University Basic Medicine College, Qingdao, 266000 Shandong People's Republic of China
| | - Lili Wang
- 1Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000 Shandong People's Republic of China
| | - Wenwen Ran
- 1Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000 Shandong People's Republic of China
| | - Guangqi Li
- 1Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000 Shandong People's Republic of China
| | - Yujing Xiao
- 1Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000 Shandong People's Republic of China
| | - Xiaonan Wang
- 1Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000 Shandong People's Republic of China
| | - Han Zhao
- 1Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000 Shandong People's Republic of China
| | - Xiaoming Xing
- 1Department of Pathology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000 Shandong People's Republic of China
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13
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Lin H, Ran W, Chen X, Wang B, Yang P, Li Y, Xiao Y, Wang X, Li G, Wang L, Han Y, Peng Y, Lang J, Liang Y, Tian G, Yuan D, Yang J, Deng C, Xing X. Whole-exome sequencing of tumour-only samples reveals the association between somatic alterations and clinical features in pancreatic cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz431.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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14
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Yu G, Yang P, Ran W, Xing X, Wang T, Wu S, Pan X, Qu G, Gai P, Ding W. Chondroid gastrointestinal stromal tumor in the stomach with early adenocarcinoma. Int J Clin Exp Pathol 2019; 12:1642-1648. [PMID: 31933982 PMCID: PMC6947111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/25/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To explore the pathologic features of gastric chondroid gastrointestinal stromal tumors. METHODS The clinicopathologic data of one case of gastric chondroid gastrointestinal stromal tumor were collected and the features were analyzed by literature review. RESULTS The male patient was 64 years old and had suffered from upper abdominal fullness discomfort without obvious cause for 5 years. Gastroscopic examination showed a rough area located in the lesser curvature of the gastric antrum, measuring 6 cm × 4 cm. CT scan showed the stomach wall was unevenly thick at the gastric antrum and stomach outlet. Multiple enlarged lymph nodes were seen nearby. The biopsy pathology showed adenocarcinoma of gastric antrum. The patient underwent laparoscopic gastrectomy and gastric chondroid gastrointestinal stromal tumor was found with adenocarcinoma of the stomach. Asp842Val mutation was found in the PDGFRα 18 exon. CONCLUSION Gastric chondroid gastrointestinal stromal tumors are rare and low risk. Tumor cells express CD117 and Asp842Val mutation in the PDGFRα 18 exon revealed by genetic sequencing suggesting this kind of tumor might be resistant to imatinib.
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Affiliation(s)
- Guohua Yu
- Department of Pathology, Affiliated Yantai Yuhuangding Hospital, Qingdao UniversityYantai, China
| | - Ping Yang
- Department of Pathology, Affiliated Yantai Yuhuangding Hospital, Qingdao UniversityYantai, China
| | - Wenwen Ran
- Department of Pathology, Affiliated Hospital, Qingdao UniversityQingdao, China
| | - Xiaoming Xing
- Department of Pathology, Affiliated Hospital, Qingdao UniversityQingdao, China
| | - Ting Wang
- Department of Pathology, Affiliated Yantai Yuhuangding Hospital, Qingdao UniversityYantai, China
| | - Shishou Wu
- Department of Pathology, Affiliated Yantai Yuhuangding Hospital, Qingdao UniversityYantai, China
| | - Xubo Pan
- Department of Pathology, Affiliated Yantai Yuhuangding Hospital, Qingdao UniversityYantai, China
| | - Guimei Qu
- Department of Pathology, Affiliated Yantai Yuhuangding Hospital, Qingdao UniversityYantai, China
| | - Pengzhou Gai
- Department of Surgery, Affiliated Yantai Yuhuangding Hospital, Qingdao UniversityYantai, China
| | - Weifang Ding
- Department of Internal Medicine, Affiliated Yantai Yuhuangding Hospital, Qingdao UniversityYantai, China
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15
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Liu Y, Ran W, Shen Y, Feng W, Yi J. High-intensity focused ultrasound and laparoscopic myomectomy in the treatment of uterine fibroids: a comparative study. BJOG 2019; 124 Suppl 3:36-39. [PMID: 28856854 DOI: 10.1111/1471-0528.14745] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2017] [Indexed: 12/25/2022]
Abstract
OBJECTIVE To compare the clinical efficacies of high-intensity focused ultrasound (HIFU) and laparoscopic myomectomy (LM) in the treatment of uterine fibroids and their effects on patients' quality of life. DESIGN A non-randomised control study. SETTING Gynaecological department in a university teaching hospital. POPULATION Patients with uterine fibroids. METHODS From November 2014 to November 2015, 166 patients with uterine fibroids were enrolled and underwent HIFU (n = 99) and LM (n = 67) surgeries, respectively. Clinical efficacy, postoperative complications and quality of life after treatment were evaluated using the SF-36 Scale to compare the differences in each variable at the 1-year follow up. MAIN OUTCOMES MEASURES Differences in efficacy, safety and quality of life between the patients treated with HIFU and LM. RESULTS The 12-month follow-up results showed that the HIFU group had a total effective rate of 99%; only one patient underwent alternative treatment due to non-apparent tumour shrinkage. All patients in the LM group showed complete tumour disappearance. Of these patients, 52 showed significant clinical improvement, 15 with partial clinical improvement, a total effective rate of 98%. There was no significant difference in effectivity rate between the two groups (P > 0.05). Both treatments effectively improved patients' quality of life. Compared with the LM group, patients in the HIFU group experienced no blood loss, a shorter hospital stay and fewer adverse effects and complications, the difference being statistically significant (P < 0.05). CONCLUSIONS High-intensity focused ultrasound can be as efficacious as LM therapy and effectively improve patients' quality of life in the treatment of uterine fibroids, with fewer adverse effects and complications, shorter hospital stays, and quicker postoperative recovery compared with LM therapy. TWEETABLE ABSTRACT Patients with uterine fibroids can be effectively treated with both HIFU and myomectomy.
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Affiliation(s)
- Y Liu
- Department of Obstetrics and Gynecology, the Fifth Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - W Ran
- Department of Obstetrics and Gynecology, the Fifth Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Y Shen
- Department of Obstetrics and Gynecology, the Fifth Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - W Feng
- Department of Obstetrics and Gynecology, the Fifth Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - J Yi
- Department of Obstetrics and Gynecology, the Fifth Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
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16
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Zhang X, Ran W, Wu J, Li H, Liu H, Wang L, Xiao Y, Wang X, Li Y, Xing X. Deficient mismatch repair and RAS mutation in colorectal carcinoma patients: a retrospective study in Eastern China. PeerJ 2018; 6:e4341. [PMID: 29423347 PMCID: PMC5804321 DOI: 10.7717/peerj.4341] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/18/2018] [Indexed: 12/12/2022] Open
Abstract
Objectives To investigate the frequency and prognostic role of deficient mismatch repair (dMMR) and RAS mutation in Chinese patients with colorectal carcinoma. Methods Clinical and pathological information from 813 patients were reviewed and recorded. Expression of mismatch repair proteins was tested by immunohistochemistry. Mutation analyses for RAS gene were performed by real-time polymerase chain reaction. Correlations of mismatch repair status and RAS mutation status with clinicopathological characteristics and disease survival were determined. Results The overall percentage of dMMR was 15.18% (121/797). The proportion of dMMR was higher in patients <50 years old (p < 0.001) and in the right side of the colon (p < 0.001). Deficient mismatch repair was also associated with mucinous production (p < 0.001), poor differentiation (p < 0.001), early tumor stage (p < 0.05) and bowel wall invasion (p < 0.05). The overall RAS mutation rate was 45.88%, including 42.56% (346/813) KRAS mutation and 3.69% (30/813) NRAS mutation (including three patients with mutations in both). KRAS mutation was significantly associated with mucinous production (p < 0.05), tumor stage (p < 0.05) and was higher in non-smokers (p < 0.05) and patients with a family history of colorectal carcinoma (p < 0.05). Overall, 44.63% (54/121) dMMR tumors harbored KRAS mutation, however, dMMR tumors were less likely to have NRAS mutation. Moreover, dMMR, KRAS and NRAS mutation were not prognostic factors for stage I–III colorectal carcinoma. Conclusions This study confirms that the status of molecular markers involving mismatch repair status and RAS mutation reflects the specific clinicopathological characteristics of colorectal carcinoma.
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Affiliation(s)
- Xiangyan Zhang
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China.,Department of Pathology, Qingdao University Basic Medicine College, Qingdao, China
| | - Wenwen Ran
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jie Wu
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hong Li
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Huamin Liu
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lili Wang
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yujing Xiao
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaonan Wang
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yujun Li
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoming Xing
- Department of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China
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Song ZJ, Ran W, Wei FY. One-step approach for the synthesis of CoFe 2O 4@rGO core-shell nanocomposites as efficient adsorbent for removal of organic pollutants. Water Sci Technol 2017; 75:397-405. [PMID: 28112667 DOI: 10.2166/wst.2016.520] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
CoFe2O4-reduced graphene oxide nanocomposites (CFG) have been successfully synthesized via one-step solvothermal method. The prepared CFG are characterized by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy (FESEM), vibrating sample magnetometer and so on. The FESEM results show that CFG have uniform core-shell structure with an average diameter of about 75 nm and the thickness of the outer graphene shell is about 15-20 nm. The mass ratio of CoFe2O4 to graphene oxide is a key factor affecting the formation of core-shell hybrids. CFG display much higher adsorption capacity for anionic dyes than cationic dyes owing to the favorable electrostatic interaction. The adsorption capacity for methyl orange is observed as high as 263 mg g-1 at 298 K, and the adsorption isotherms follow the Langmuir model. Furthermore, the specific saturation magnetization (Ms) of CFG is 32.8 emu g-1, and the as-synthesized nanocomposites can be easily separated by external magnetic field after adsorption. The results suggest that CFG have great potential for the practical industrial wastewater treatment.
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Affiliation(s)
- Z J Song
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, China E-mail:
| | - W Ran
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, China E-mail:
| | - F Y Wei
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, China E-mail:
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Abstract
When viscous corrections to the inviscid acoustic radiation force theory are implemented and applied to a standing wave field, the direction of the acoustic radiation force on particles varies from theory to theory. Specifically, some theories predict that the direction of the force depends on the particle diameter, while others reveal that the direction of the force is independent of particle diameter. The present study is an experimental investigation of the direction of the acoustic radiation force which suggests that particle diameter does affect the direction. Experiments were conducted in air using an ultrasonic standing wave field with a nominal frequency of 30 kHz. Smoke particles and fine water droplets having a range of diameters were flowed into the region of a standing wave field. The direction of the acoustic radiation force was determined by observing whether the particles accumulated in the nodes or the anti-nodes of the standing wave. Results show a change in the direction of the acoustic radiation force at a particle diameter of 0.3±0.1 μm, which corresponds to a particle diameter to acoustic-boundary-layer thickness ratio of 0.023±0.008.
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Affiliation(s)
- W Ran
- Department of Mechanical Engineering, Clemson University, Clemson, South Carolina 29634, USA
| | - J R Saylor
- Department of Mechanical Engineering, Clemson University, Clemson, South Carolina 29634, USA
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Xing X, Lin D, Ran W, Liu H. ALK-positive diffuse large B-cell lymphoma of the duodenum: A case report and review of the literature. Exp Ther Med 2014; 8:409-412. [PMID: 25009592 PMCID: PMC4079440 DOI: 10.3892/etm.2014.1786] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 05/21/2014] [Indexed: 01/16/2023] Open
Abstract
Anaplastic lymphoma kinase (ALK)-positive diffuse large B-cell lymphoma (ALK+ DLBCL) is characterized by the presence of immunoblastic or plasmablastic cells with a strong ALK protein expression that is frequently associated with t(2;17)(p23;q23). The present study reports a case of ALK+ DLBCL in a 26-year-old male with a duodenal mass. Histologically, the neoplastic cells demonstrated prominent plasmablastic differentiation with abundant amphophilic cytoplasma and central nucleoli. Paraffin immunohistochemistry revealed: an exclusively cytoplasmic granular expression of ALK; CD138, immunoglobulin A (IgA) and CD79α positivity; and focal expression of multiple myeloma oncogene 1 (Mum-1), CD30 and epithelial membrane antigen (EMA). However, the immunohistochemical staining was negative for CD3, CD38 and CD20. Fluorescence in situ hybridization (FISH) analysis using an ALK break-apart probe revealed the presence of ALK gene rearrangements in the patient. To the best of our knowledge, the current case represents the first example of primary extranodal ALK+ DLBCL presenting as a duodenal mass.
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Affiliation(s)
- Xiaoming Xing
- Department of Pathology, The Affiliated Hospital of Qingdao University Medical College, Qingdao, Shandong 266003, P.R. China
| | - Dongliang Lin
- Department of Pathology, The Affiliated Hospital of Qingdao University Medical College, Qingdao, Shandong 266003, P.R. China
| | - Wenwen Ran
- Department of Pathology, The Affiliated Hospital of Qingdao University Medical College, Qingdao, Shandong 266003, P.R. China
| | - Huamin Liu
- Department of Oncology, The Affiliated Hospital of Qingdao University Medical College, Qingdao, Shandong 266003, P.R. China
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Fan D, Ding L, Liu H, Wang J, Ran W, Li Y, Lin D. Effusion cytology: an effective method for the diagnosis of pulmonary lymphangioleiomyomatosis. J Thorac Dis 2014; 6:E54-7. [PMID: 24822126 DOI: 10.3978/j.issn.2072-1439.2014.03.12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 03/06/2014] [Indexed: 01/30/2023]
Abstract
Lymphangioleiomyomatosis (LAM) is a rare progressive lung disease. Chylous effusion is one of the most common clinical manifestations of LAM. Herein we present a 39-year-old female who presented progressive dyspnea on exertion and chylothorax. The chest computed tomography showed multiple thin-walled cysts in both lungs which suggesting LAM. The pleural effusion cytology plus with further immunocytochemistry confirmed the computed tomography diagnosis. Therefore, the LAM can be diagnosed by cytologic examination combined with conventional chest computed tomography and clinical manifestations, which can help some patients to avoid an invasive biopsy.
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Affiliation(s)
- Daming Fan
- 1 Department of Pathology, 2 Department of Prevention Care, the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China
| | - Li Ding
- 1 Department of Pathology, 2 Department of Prevention Care, the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China
| | - Hui Liu
- 1 Department of Pathology, 2 Department of Prevention Care, the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China
| | - Jigang Wang
- 1 Department of Pathology, 2 Department of Prevention Care, the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China
| | - Wenwen Ran
- 1 Department of Pathology, 2 Department of Prevention Care, the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China
| | - Yujun Li
- 1 Department of Pathology, 2 Department of Prevention Care, the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China
| | - Dongliang Lin
- 1 Department of Pathology, 2 Department of Prevention Care, the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China
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Fan D, Li Y, Ran W, Yu W, Li H. [Dual-color silver-enhanced in-situ hybridization for determination of HER2 gene amplification in gastric carcinoma]. Zhonghua Bing Li Xue Za Zhi 2014; 43:4-7. [PMID: 24713241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To investigate the concordance of dual-color silver enhanced in-situ hybridization (DSISH) and immunohistochemistry (IHC) in the detection of HER2 gene amplification and expression and to evaluate the values of DSISH in detecting HER2 gene status in gastric carcinoma. METHODS By using automated DSISH and IHC, HER2 gene status was detected in 230 cases of gastric cancer. RESULTS Among the 230 cases of gastric carcinoma tested by DSISH, 43 cases were positive and 187 cases were negative; HER2 gene amplification rate was 18.7% (43/230). The expression of HER2 protein was negative, weakly, moderately and strongly positive in 115, 69, 15 and 31 cases, respectively, by IHC. HER2 protein positive rate was 13.5% (31/230). Of the 43 HER2 gene amplification cases by DSISH, 2, 10, 2 and 29 cases were negative, weakly, moderately and strongly positive by IHC; Of the 187 HER2 negative cases by DSISH, 113, 59, 13 and 2 cases were negative, weakly, moderately and strongly positive by IHC, respectively. The overall concordance of HER2 status in the investigation between IHC and DSIDH was 93.5% (201/215), with a high consistency (Kappa coefficient 0.767, P < 0.01). CONCLUSIONS DSISH can be applied to detect the HER2 gene status in gastric cancer and it also has a high consistency with the result of IHC. In addition, due to frequent heterogeneous expression of HER2, cases with moderate HER2 protein expression may need further assessment by DSISH.
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Affiliation(s)
- Daming Fan
- Department of Pathology, Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, China
| | - Yujun Li
- Department of Pathology, Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, China. E-mail:
| | - Wenwen Ran
- Department of Pathology, Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, China
| | - Wenjuan Yu
- Department of Pathology, Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, China
| | - Hong Li
- Department of Pathology, Affiliated Hospital of Qingdao University Medical College, Qingdao 266003, China
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Yu W, Zhang W, Jiang Y, Wang Y, Li Y, Wang J, Sun L, Ran W, Li H. Clinicopathological, genetic, ultrastructural characterizations and prognostic factors of papillary renal cell carcinoma: new diagnostic and prognostic information. Acta Histochem 2013; 115:452-9. [PMID: 23219441 DOI: 10.1016/j.acthis.2012.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2012] [Revised: 10/24/2012] [Accepted: 10/25/2012] [Indexed: 10/27/2022]
Abstract
Papillary renal cell carcinoma (PRCC) includes two different morphological subtypes. The differences of genetics and ultrastructure of the two subtypes have been rarely reported. Also, new biomarkers related to the diagnosis and prognosis of PRCC have still not been well elucidated. Immunohistochemistry, fluorescence in situ hybridization (FISH) and transmission electron microscopy were used systematically to determine the characteristics of 56 cases of PRCC and to reveal new diagnostic and prognostic information. Type 1 PRCC presented higher expression rates of EMA and CK7, whereas type 2 presented a higher expression rate of CD10. New immunohistochemical markers, including: p504s, PAX-2, PAX-8 and CA-IX showed extensive immunostaining in PRCC. We first revealed a distinct immunostaining pattern of CA-IX, which was located in multiple foci in PRCC. All tumors had at least one chromosomal aberration including loss of Y, gains of 7 or 17. Gain of chromosome 17 was common in type 1; losses of chromosome 18, 11 and 8 appeared in type 2. Ultrastructurally, glycogen granules and secondary lysosomes were seen in type 1, mitochondria and smooth endoplasmic reticulum were scattered in type 2. Tumor subtype, nuclear grade, TNM stage, clear cell renal cell carcinoma (CCRCC) component and sarcomatoid elements, metastasis, CAIX expression, losses of chromosome 18 and 8 were related to poor outcome of PRCC. We conclude that the two subtypes of PRCC originate from different renal cells, and arise from partially common genetic pathways. EMA, CK7, CD10, p504s, PAX-2, PAX-8 and CA-IX are helpful markers in the differential diagnosis of PRCC. CA-IX expression, losses of chromosome 18 and 8 are new prognostic factors of PRCC.
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Wang J, Zhu L, Jiang Y, Meng N, Ran W, Yuan H, Liu C, Qu A, Yang R. PO-371 IMAGE-GUIDED IODINE-125 PERMANENT IMPLANTATION AS SALVAGE THERAPY FOR RECURRENT HEAD AND NECK CARCINOMA. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72337-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Wang J, Lin L, Jiang Y, Meng N, Ran W, Tian S, Yang R, Yu Y. PO-370 PERCUTANEOUS ULTRASOUND-GUIDED IODINE-125 IMPLANTATION AS A SALVAGE THERAPY FOR RECURRENT LYMPH NODE METASTASES. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72336-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Higgs PG, Ran W. Coevolution of Codon Usage and tRNA Genes Leads to Alternative Stable States of Biased Codon Usage. Mol Biol Evol 2008; 25:2279-91. [DOI: 10.1093/molbev/msn173] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Xie XJ, Ran W, Shen QR, Yang CY, Yang JJ, Cao ZH. Field studies on 32P movement and P leaching from flooded paddy soils in the region of Taihu Lake, China. Environ Geochem Health 2004; 26:237-243. [PMID: 15499779 DOI: 10.1023/b:egah.0000039586.12907.e9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Field experiments were done in two sites, Yixing and Changshu, Jiangsu province, China, to study P movement and leaching in flooded paddy soils. P movement in soil was investigated by using the KH2 32PO4 tracker method, and the amount of P leached from the soil layer in different depths was estimated by measuring P concentrations in the soil solution and saturated hydraulic conductivities in field. Determination was done about one month after P application. There was 46% and 42% of total 32P retained in the 0-5cm layer of soil in the Yixing site and in the Changshu site respectively. The 32P retained in the 25-30 cm layer was only about 1-2% of the total 32P added. Furthermore, 8.01% of 32P in the soil of Yixing site and 16.8% of 32P in the soil of Changshu site was lost from the layer 0-30 cm soil. The seasonal amounts of P leached from the top soil layer and from bottom layer are about 4.5-5.8% and 1.6-2.1% of the total P application, respectively. Changes of total P concentrations in soil solutions during rice growth showed that the fertilizer P applied before flooding of the paddy fields suffered a flash leaching loss and a slow leaching loss. We concluded that the fertilizer P could quickly move in the flooded paddy rice field and parts of it can enter into surface water and ground water. Unless the P application is well managed the risk of P loss and consequently environmental pollution exist.
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Affiliation(s)
- X J Xie
- College of Natural Resources and Environmental Science, Nanjing Agricultural University, Nanjing 210095, China
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Xu YC, Shen QR, Ran W. Content and distribution of forms of organic N in soil and particle size fractions after long-term fertilization. Chemosphere 2003; 50:739-745. [PMID: 12688485 DOI: 10.1016/s0045-6535(02)00214-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Most of the N in surface soils occurs in organic forms, and when mineralized it plays a key role in soil fertility and plant nutrition. Our objective was to study the effect of long-term applications of organic manure on the content and distribution of forms of organic N in bulk soil and soil particle size fractions to characterize the inherent soil nitrogen fertility. Five treatments were as follows: (1) CK (no fertilizer and no manure added), (2) mineral fertilizer only, (3) straw + NPK, (4) green manure + NPK and (5) pig manure + NPK. Soil particle size fractions (0-2, 2-10, 10-50 and 50-100 microm) were isolated without chemical pretreatment by ultrasonic dispersion in water followed by sedimentation. The content of total N and forms of organic N in the bulk soil increased after long-term fertilization, and the effect varied with fertilizer type. The plot treated with only mineral fertilizer gave the highest NH3-N and the lowest amino sugar-N content in all treatments. The highest content of amino sugar-N and amino acid-N was found in the treatment of pig manure + NPK. The content (g kg(-1) fraction) of hydrolysable N within size fractions was in the order 0-2 > 2-10 > 50-100 > 10-50 microm, but the contribution of different size fraction to hydrolysable N decreased in the sequence 10-50 > 0-2 > 2-10 > 50-100 microm. Most of the applied mineral fertilizer N that remained in soils was distributed in the particle size fraction < 2 microm while most of the remaining N from manure applied with NPK was transferred into amino sugar-N in each size fraction, and amino acid-N in the size fractions > 2 microm during the process of humification.
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Affiliation(s)
- Y C Xu
- College of Natural Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
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Abstract
Because low concentration of nitrite could be toxic to biological systems and high amounts of nitrite have been observed in a river of northern China since 1990, nitrite from agricultural soil sources should be investigated. In this paper, effects of levels of ammonium-N (NH4+-N), soil pH and nitrification inhibitors on NO2- accumulation, and duration of nitrite in soils were studied. Application of 11.2 mg of nitrapyrin kg(-1) soil or 11.2 mg of sodium azide kg(-1) soil dramatically suppressed nitrite occurrence. Within all incubation times and at all levels of ammonium-N input, we did not detect any measurable NO2-N accumulation in samples of Yellow-brown earth (pH 5.67), but observed huge accumulation in the 2 alkaline soils, Fluvo-aquic loam (pH 7.89) and Fluvo-aquic sand (pH 8.20). The concentrations of nitrite in both alkaline soils were related to ammonium-N levels. The effect of pH on nitrite accumulation was demonstrated by using slurries of Fluvo-aquic sand under continuous aeration and buffers of different pH. Data showed that nitrite concentration increased with the elevated pH, yet that ammonia oxidizers from the original soil (pH 8.2) could adapt to the new medium of low pH (pH 5.35). Dynamic changes of nitrite in soils amended with different rates of nitrite-N were also measured in 6 days. Thereby, we concluded that nitrite was unstable in acid soils, but durable in alkaline soils. The authors suggested that NO2- accumulation in field soils and its subsequent environmental impact should receive more attention.
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Affiliation(s)
- Q R Shen
- College of Natural Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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Chen S, Lin E, Ran W, Kuang D, Li C. [Three-dimensional surface reconstruction of spiral CT for teeth and clinical use in examining impacted teeth of jaws]. Hua Xi Kou Qiang Yi Xue Za Zhi 2000; 18:247-9. [PMID: 12539534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To establish a new technique for three-dimensional surface reconstruction of teeth (dental surface reconstruction), and apply it to investigate impacted teeth in bone before operation. METHODS On the basis of three-dimensional surface reconstruction of teeth and jaws, the dental surface reconstruction is obtained with the technique of shaded surface display (SSD), making transparent bone around. This technique is applied to investigate 9 cases of supernumerary and impacted teeth. RESULTS Dental surface reconstruction image can present the dental surface image including crown, root, neck and root bifurcation in three-dimensional way, without presenting the image of other tissue around. In 4 cases, the abnormal configuration, labial or palatal location, and relation with dentition in anterior maxilla of 5 supernumerary were shown. In 1 case, the shape, location, eruption orientation and the angle of orthodontic distraction of 1 impacted permanent canine were displayed. In 3 cases, the shape, location, and extraction resistance of 6 impacted wisdom teeth were revealed. In 1 case, the configuration, distance to adjacent molar of 1 impacted wisdom tooth, which is a transposition tooth in maxillary sinus, were also demonstrated. CONCLUSION The dental surface reconstruction is a new technique to display three-dimensional surface configuration of teeth. This technique can be applied to examine impacted and supernumerary teeth before surgical and orthodontic treatment.
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Affiliation(s)
- S Chen
- Department of Stomatology, Sun Yat-sen University of Medical Sciences
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Ran W, Ni S, Fan X. [Applied anatomy of insular skin flap of nasolabial groove with retrograde superior labial artery]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 1998; 12:374-5. [PMID: 10437096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
In order to study the feasibiliy of the insular skin flap of the nasolabial groove with the retrograde superior labial artery, 8 adult cadavers were dissected and the relation between the superior labial artery and the skin of nasolabial groove was observed. The result revealed that superior labial artery was one of the branches of the facial artery and could be found in every cadaver. The diameter of the artery was 0.8 +/- 0.1 mm and the length was about 90 mm. The left and right facial arteries were connected with each other in the mid-line in the formation of the arcuate artery. The arcuate artery lay within the submucous tissue beyond the vermilion border about 6 mm. The concomitant veins were constant. If the facial artery being sectioned was beyond its initial site of superior labial artery, the skin of nasolabial groove on the same side could receive blood supply from contralateral supperior labial artery. The conclusion was that the insular skin flap of the nasolabial groove with the retrograde superior labial artery could be used in patients, because it had support from anatomical research.
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Affiliation(s)
- W Ran
- Department of Plastic Surgery, Hei Longjiang Provincial Hospital, P.R. China
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Yu QX, Pang KM, Ran W, Philipsen HP, Chen XH. The microvasculature of human infant oral mucosa using vascular corrosion casts and india ink injection. II. Palate and lip. Scanning Microsc 1994; 8:133-139. [PMID: 7973500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The microvasculature of human hard and soft palate and lip originating from four infant males and six females, aged 6 months to 2 years was studied by scanning electron microscopy of vascular corrosion casts and light microscopy of India ink injected specimens. The capillary loops of the hard palate mucosa and vermilion border of the lips were found to be tall, numerous and consisted of primary, secondary and tertiary loops. Those of the soft palatal and labial mucosa were short, few in number and demonstrated a simple hair-pin shape originating directly from the subpapillary vascular network. It was concluded that the configuration of capillary loops is not only determined by the shape of the connective tissue papillae in the lamina propria but also influenced by the functional demands characteristic of the different areas of the oral mucosa.
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Affiliation(s)
- Q X Yu
- Faculty of Stomatology, Sun Yat-Sen University of Medical Sciences, Guangzhou, China
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Yu QX, Ran W, Pang KM, Philipsen HP, Theilade J, Chen XH, Mok YC. The microvasculature of human oral mucosa using vascular corrosion casts and India ink injection. I. Tongue papillae. Scanning Microsc 1992; 6:255-62. [PMID: 1626245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The microvasculature of human tongue papillae originating from 9 males and 6 females, aged 0.5 to 2 years was studied by scanning electron microscopy (SEM) of vascular corrosion casts and by light microscopy (LM) of India ink injected specimens. All papillae showed a microvasculature characterized by primary, secondary and tertiary capillary loops. In the filiform papillae the loops were generally arranged in a corolla-like pattern with the tertiary loops demonstrating a hair-pin shape. The fungiform papillae showed basically a similar architectural pattern although the loops were somewhat more compact and complex in structure. A small, shallow depression of the tertiary loops at the top of these papillae was found to be occupied by a prominent rete ridge of the surface epithelium. There was a gradual transition from filiform to foliate papillae, the latter appearing as rows of coalesced filiform papillae. The circumvallate papillae easily identified by the surrounding furrow showed a rather complex and compact pattern of capillary loops of which typical hair-pin shaped tertiary loops dominated the periphery of the papilla. Small grooves or depressions in the vascular network were found to be occupied by rete ridges of the overlying mucosal epithelium.
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Affiliation(s)
- Q X Yu
- Faculty of Stomatology, Sun Yat-Sen University of Medical Sciences, Guangzhou, China
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Ran W. [Observations on microvasculature of the periosteum of infant mandibular ramus by scanning electron microscope]. Zhonghua Kou Qiang Yi Xue Za Zhi 1990; 25:280-1, 318. [PMID: 2128250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In this paper, a vascular casting method using methylmethacrylate was adopted. Satisfactory samples were obtained and electron microscope observations were carried out on periosteum microvasculature of infant mandibular ramus. There were significant differences in the density and arrangement of periosteal microvascular in various regions. In muscular attached region, the blood vessels showed a high density and bundle-like arrangement parallel with the direction of muscular fibers. In nonmuscular attached region, the blood vessels showed a marked low density and an irregular net-like arrangement. Between muscular bundles small arteries into periosteum were seen. Around the mandibular foramen the vessels of the periosteum formed a high density region. The clinical application of the above mentioned results were discussed.
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Affiliation(s)
- W Ran
- Faculty of Stomatology, Sun Yat-Sen University of Medical Sciences, Guangzhou
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Clegg CH, Ran W, Uhler MD, McKnight GS. A mutation in the catalytic subunit of protein kinase A prevents myristylation but does not inhibit biological activity. J Biol Chem 1989; 264:20140-6. [PMID: 2584209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The catalytic of subunit of cAMP-dependent protein kinase is acylated at its NH2 terminus with myristic acid. This type of modification is thought to mediate the association of proteins with lipid bilayers, yet the catalytic subunit shows no preferential binding with membranes. We investigated the role of C subunit myristylation using a cDNA expression vector in which the acylated NH2-terminal Gly was mutagenized to Ala. Protein synthesized in NIH 3T3 cells from this modified gene did not incorporate [3H]myristate. However, the kinase activity of this altered C subunit on a synthetic substrate was not diminished, nor was its ability to form holoenzyme with regulatory subunit. Non-myristylated C subunit also regulated several biological processes occurring in specific subcellular compartments; mutant C subunit stimulated dramatic cell shape changes controlled by the cytoskeleton, restored steroidogenesis in the mitochondria of defective adrenocortical cells, and effectively induced the transcription of genes in the nucleus. These results suggest that myristylation is nonessential for C subunit conformation and enzyme activation, and is not required for C subunit interaction with other proteins in regions where C is thought to localize upon activation. The purpose for NH2-terminal myristylation of this important signal-transducing enzyme remains an enigma.
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Affiliation(s)
- C H Clegg
- Department of Pharmacology, University of Washington, Seattle 98195
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McCaffrey P, Ran W, Campisi J, Rosner MR. Two independent growth factor-generated signals regulate c-fos and c-myc mRNA levels in Swiss 3T3 cells. J Biol Chem 1987; 262:1442-5. [PMID: 3492494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Polypeptide growth factors that stimulate cell proliferation bind to cell surface receptors and activate intracellular signal transduction pathways. One major signalling pathway, initiated by phosphatidylinositol (PI) turnover, involves activation of protein kinase C. Some polypeptide growth factors, including mitogens that activate protein kinase C, induce a rapid increase in expression of the proto-oncogenes, c-myc and c-fos. In order to characterize the signal transduction pathways responsible for proto-oncogene activation, we treated Swiss 3T3 cells with the tumor promoter phorbol dibutyrate to generate cells deficient in protein kinase C. These cells were then stimulated with platelet extract, bombesin, or epidermal growth factor (EGF) and the levels of c-myc and c-fos mRNA were determined. Platelet extract or bombesin, which stimulate PI turnover, were substantially weaker inducers of c-myc and c-fos mRNA levels in the protein kinase C-depleted cells, although some variability with platelet extract was noted. EGF, which does not stimulate PI turnover in several cell systems, was by contrast a potent inducer of both proto-oncogenes whether or not the cells were deficient in protein kinase C. Pretreatment of cells with phorbol dibutyrate caused little or no change in the basal levels of c-myc or c-fos mRNA, but led to a small but significant increase in basal levels of ornithine decarboxylase mRNA. These results demonstrate that EGF and growth factors that activate PI turnover induce expression of the c-myc and c-fos proto-oncogenes through different pathways.
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McCaffrey P, Ran W, Campisi J, Rosner MR. Two independent growth factor-generated signals regulate c-fos and c-myc mRNA levels in Swiss 3T3 cells. J Biol Chem 1987. [DOI: 10.1016/s0021-9258(19)75654-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Ran W, Dean M, Levine RA, Henkle C, Campisi J. Induction of c-fos and c-myc mRNA by epidermal growth factor or calcium ionophore is cAMP dependent. Proc Natl Acad Sci U S A 1986; 83:8216-20. [PMID: 2430281 PMCID: PMC386898 DOI: 10.1073/pnas.83.21.8216] [Citation(s) in RCA: 115] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Phorbol esters activate protein kinase C and induce expression of the c-fos and c-myc protooncogenes in density-arrested BALB/c 3T3 (A31) cells; in contrast, epidermal growth factor (EGF) does not activate protein kinase C and is a poor inducer of c-fos and c-myc in these confluent cells. We show that, when A31 cells were subconfluent and made quiescent by serum deprivation, the phorbol ester phorbol 12-myristate 13-acetate induced c-fos and c-myc mRNA poorly, whereas EGF was a better inducer. Another platelet-derived growth factor-inducible gene, JE, did not show this differential regulation by phorbol 12-myristate 13-acetate and EGF. The ability of EGF to induce protooncogene mRNA was associated with elevated levels of intracellular cAMP. First, serum-deprived cells maintained cAMP at about 2-fold higher level than density-arrested cells. Second, induction was greatly enhanced by cholera toxin and 3-isobutyl-1-methylxanthine, which increased intracellular cAMP 3- to 10-fold. The calcium ionophore A23187 mimicked EGF in that it elevated c-fos and c-myc mRNA when administered with cholera toxin and isobutylmethylxanthine. Neither cholera toxin and isobutyl-methylxanthine nor A23187 appreciably induced these mRNAs when used alone. Our results suggest that c-fos and c-myc expression can be regulated by an EGF-directed pathway that utilizes calcium and cAMP as cooperating cytoplasmic messengers.
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Dean M, Levine RA, Ran W, Kindy MS, Sonenshein GE, Campisi J. Regulation of c-myc transcription and mRNA abundance by serum growth factors and cell contact. J Biol Chem 1986; 261:9161-6. [PMID: 3722193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
We describe effects of serum insufficiency and cell contact on the transcription and abundance of the c-myc proto-oncogene mRNA in BALB/c 3T3 fibroblasts. In exponentially growing cells, withdrawal of serum caused a 10-fold decline in c-myc mRNA within 90 min. At least part of this decline was due to a decrease in the level of myc gene transcription. These cells became quiescent at subconfluence after 36-40 h. Cells made quiescent at subconfluence or confluence contained low levels of c-myc mRNA which rose more than 20-fold 2 h after stimulation of growth by fresh serum. Thereafter, the mRNA level declined. In subconfluent cells, it declined to the level in exponentially growing cells, i.e. nearly 10-fold over the level in quiescent cells. In confluent cells, by contrast, the mRNA returned to near-quiescent levels within 18 h (by mid-S phase). However, c-myc gene transcription was regulated identically in subconfluent and confluent cultures; quiescent cells transcribed c-myc at detectable levels, and stimulation by serum caused a 5-fold increase in 1 h, followed by a decline to about 2-fold over the quiescent level within 18 h. Thus, confluence affected steady state mRNA levels without affecting the level of transcription. Our results suggest that extracellular conditions that modulate cell proliferation (serum and cell contact) exert strong and rapid control over c-myc mRNA by post-transcriptional and transcriptional mechanisms.
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Dean M, Levine RA, Ran W, Kindy MS, Sonenshein GE, Campisi J. Regulation of c-myc transcription and mRNA abundance by serum growth factors and cell contact. J Biol Chem 1986. [DOI: 10.1016/s0021-9258(18)67633-1] [Citation(s) in RCA: 166] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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