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Zhang YY, Xin X, Bi LQ, Shi FY, Cao RX, Wang YM, Liu XH. [Colorectal cancer with β-catenin protein expression deficiency: a clinicopathological analysis]. Zhonghua Bing Li Xue Za Zhi 2024; 53:288-292. [PMID: 38433058 DOI: 10.3760/cma.j.cn112151-20230721-00019] [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] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
Objective: To investigate the clinicopathological features and molecular characteristics of β-catenin-deficient colorectal cancer. Methods: The clinical, pathological and molecular features of 11 colorectal cancers with β-catenin protein loss diagnosed at the 960th Hospital of People's Liberation Army of China, from January 2012 to November 2022 were analyzed. Results: Among the 11 patients, 3 were males and 8 were females. Their age ranged from 43 to 74 years, with the median age of 59 years. Six were in the left colon and 5 were in the right colon. One of the 11 cases had lymph node metastasis, 10 cases were well and moderately differentiated adenocarcinoma, and 1 was mucinous adenocarcinoma. Eight cases were of TNM stage T4, 2 of T1 stage and 1 of Tis stage. β-catenin protein was not detected using immunohistochemistry. Sanger sequencing revealed the presence of fragment-deletion mutation in exon 3 of CTNNB1 gene, resulting in loss of β-catenin protein expression. Conclusion: β-catenin deficiency is present in a small number of colorectal cancers and may be associated with exon 3 mutations of CTNNB1 gene.
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Affiliation(s)
- Y Y Zhang
- Department of Pathology, 960th Hospital of People's Liberation Army of China, Jinan 250031, China
| | - X Xin
- Department of Pathology, 960th Hospital of People's Liberation Army of China, Jinan 250031, China
| | - L Q Bi
- Department of Pathology, 960th Hospital of People's Liberation Army of China, Jinan 250031, China
| | - F Y Shi
- Department of Pathology, 960th Hospital of People's Liberation Army of China, Jinan 250031, China
| | - R X Cao
- Department of Pathology, 960th Hospital of People's Liberation Army of China, Jinan 250031, China
| | - Y M Wang
- Department of Pathology, Hekou District People's Hospital, Dongying 257299, China
| | - X H Liu
- Department of Pathology, 960th Hospital of People's Liberation Army of China, Jinan 250031, China
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Wang CC, Liu W, Cao RX, Cao YC. [Clinicopathological analysis of gastric neoplasm originated from the fundic gland of 10 cases]. Zhonghua Bing Li Xue Za Zhi 2023; 52:55-57. [PMID: 36617909 DOI: 10.3760/cma.j.cn112151-20220606-00499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- C C Wang
- Department of Pathology, the 960 Hospital of the Chinese People's Liberation Army, Jinan 250031, China
| | - W Liu
- Department of Pathology, the 960 Hospital of the Chinese People's Liberation Army, Jinan 250031, China
| | - R X Cao
- Department of Pathology, the 960 Hospital of the Chinese People's Liberation Army, Jinan 250031, China
| | - Y C Cao
- Department of Pathology, the 960 Hospital of the Chinese People's Liberation Army, Jinan 250031, China
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Wang CC, Cao RX, Jiang BB, Liu XH. [Mixed tall cell variant and cribriform morular variant of papillary thyroid carcinoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2021; 50:1398-1400. [PMID: 34865437 DOI: 10.3760/cma.j.cn112151-20210426-00323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- C C Wang
- Department of Pathology, the 960 Hospital of the Chinese People's Liberation Army, Jinan 250000, China
| | - R X Cao
- Department of Pathology, the 960 Hospital of the Chinese People's Liberation Army, Jinan 250000, China
| | - B B Jiang
- Department of Pathology, the 960 Hospital of the Chinese People's Liberation Army, Jinan 250000, China
| | - X H Liu
- Department of Pathology, the 960 Hospital of the Chinese People's Liberation Army, Jinan 250000, China
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Wang CC, Gu J, Jiang BB, Cao RX, Liu XH. [Clinical pathological characteristics of 4 cases of gastric gland-derived tumors]. Zhonghua Zhong Liu Za Zhi 2021; 43:781-786. [PMID: 34289573 DOI: 10.3760/cma.j.cn112152-20191202-00776] [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] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the pathological features of gastric tumor originated from the fundic gland, including oxyntic gland adenoma (OGA) and gastric adenocarcinoma of the fundic gland (GA-FG). Methods: A retrospective analysis of 2 cases of OGA and 2 cases of GA-FG admitted to our hospital from February 2019 to September 2019 was performed. The histological features were analyzed by immunohistochemical staining combined with endoscopic observation. Results: The four cases arose from the deep layer of the lamina propria mucosae and well differentiated. Two cases of OGA confined to the mucosa, including 1 case of irregular tubules showing low-degree dysplasia and another case of irregular branching and anastomosing tubules showing high-degree dysplasia. Two cases of GA-FG combined with submucosal invasion, showed irregular branching and anastomosing tubules and formed a so-called "endless glands" pattern. Atypia, helicobacter pylori (HP) infection, chronic gastritis, intestinal metaplasia, or gastric atrophy were not observed in the superficial epithelium covering the tumor extent. Two cases of OGA and 2 cases of GA-FG showed the same result of immunohistochemical staining: pepsinogen-1 was diffusely positive in the tumor tissues and indicated chief cell differentiation, while positive ATPase and PDGFRA-α indicated parietal cells differentiation. The expression of Syn were positive in all cases, while CD10, MUC2 and CD-X2 were negative. The upregulation of p53 protein or nuclear positivity of β-catenin was not observed. The Ki-67 labeling index in the hot area was approximately 1-5%. Conclusions: GA-FG is a well-differentiated, low-grade malignant novel subtype of gastric cancer. The immunohistochemical markers and narrowband imaging combined with magnifying endoscopy (NBI-ME) enhance the diagnostic sensitivity. Whether Syn positive expression can be one of the diagnostic item needs to be further investigate. The process of tumorigenesis of GA-FG might be the transition from low-grade dysplasia to high-grade dysplasia of OGA and further to submucosal infiltration. However, the mechanism of GAFG was still unclear. Disregulation of the Shh and Wnt/β-catenin signaling pathway might be associated with tumorigenesis of GA-FG. Endoscopic submucosal dissection (ESD) is often the preferred and curative treatment.
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Affiliation(s)
- C C Wang
- Department of Pathology, the 960 Hospital of Chinese People's Liberation Army, Jinan 250000, China
| | - J Gu
- Department of Pathology, the 960 Hospital of Chinese People's Liberation Army, Jinan 250000, China
| | - B B Jiang
- Department of Pathology, the 960 Hospital of Chinese People's Liberation Army, Jinan 250000, China
| | - R X Cao
- Department of Pathology, the 960 Hospital of Chinese People's Liberation Army, Jinan 250000, China
| | - X H Liu
- Department of Pathology, the 960 Hospital of Chinese People's Liberation Army, Jinan 250000, China
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Chen GX, Cao RX, Zholud A, Urazhdin S. Measurement of the Hall effect at nanoscale with three probes. Rev Sci Instrum 2018; 89:083904. [PMID: 30184633 DOI: 10.1063/1.5030872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 07/29/2018] [Indexed: 06/08/2023]
Abstract
The Hall effect and its varieties such as quantum, anomalous, and spin Hall effects provide indispensable tools for the characterization of electronic and magnetic properties of materials, metrology, and spintronics. The conventional four-probe Hall configuration is generally not amenable to measurements at nanoscale due to current shunting by the Hall electrodes. We demonstrate that Hall measurements on the nanoscale can be facilitated by the three-probe Hall configuration that avoids the shunting problem. We illustrate the efficiency of the proposed approach with anomalous Hall effect-based measurements of individual activation events during domain wall motion in magnetic films with perpendicular anisotropy.
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Affiliation(s)
- G X Chen
- Department of Physics, Emory University, Atlanta, Georgia 30322, USA
| | - R X Cao
- Department of Physics, Emory University, Atlanta, Georgia 30322, USA
| | - A Zholud
- Department of Physics, Emory University, Atlanta, Georgia 30322, USA
| | - S Urazhdin
- Department of Physics, Emory University, Atlanta, Georgia 30322, USA
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Chang HH, Cao RX, Yang CC, Wei WL, Pang XY, Qiao Y. Interactions of acylated methylglucoside derivatives with CO2: simulation and calculations. J Mol Model 2016; 22:39. [PMID: 26781667 DOI: 10.1007/s00894-015-2903-y] [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: 07/10/2015] [Accepted: 12/28/2015] [Indexed: 10/22/2022]
Abstract
Carbohydrates have drawn considerable interest from researchers recently due to their affinity for CO2. However, most of the research in this field has focused on peracetylated derivatives. Compared with acetylated carbohydrates, which have already been studied in depth, methyl D-glucopyranoside derivatives are more stable and could have additional applications. Thus, in the present work, ab initio calculations were performed to elucidate the characteristics of the interactions of methylglucoside derivatives with CO2, and to investigate how the binding energy (ΔE) is affected by isomerization or the introduction of various acyl groups. Four methyl D-glucopyranosides (each with two anomers) bearing acetyl, propionyl, butyryl, and isobutyryl moieties, respectively, were designed as substrates, and the 1:1 complexes of a CO2 molecule with each of these sugar substrates were modeled. The results indicate that ΔE is mainly influenced by interaction distance and the number of negatively charged donors or interacting pairs in the complex; the structure of the acyl group present in the substrate is a secondary influence. Except in the case of methyl 2-O-acetyl-D-glucopyranose, the ΔE values of the α- and β-anomers of each methylglucoside were found to be almost the same. Therefore, we would expect the CO2 affinities of the four derivatives studied here to be as strong as or even stronger than that of peracetylated D-glucopyranose. Graphical Abstract The binding energy between methyl D-glucopyranoside derivatives with various substituted acyl groups and CO2 are evaluated by ab initio calculations. The strong interaction between these methyl dglucopyranoside derivatives and CO2 showed the potential of their application for CO2 capture.
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Affiliation(s)
- H H Chang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - R X Cao
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - C C Yang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - W L Wei
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - X Y Pang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China.
| | - Y Qiao
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, Shanxi, China.
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Cao RX, Sun L, Miao BF, Li QL, Zheng C, Wu D, You B, Zhang W, Han P, Bader SD, Zhang WY, Ding HF. Spectroscopic study of Gd nanostructures quantum confined in Fe corrals. Sci Rep 2015; 5:12092. [PMID: 26160318 PMCID: PMC4498218 DOI: 10.1038/srep12092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 06/12/2015] [Indexed: 12/05/2022] Open
Abstract
Low dimensional nanostructures have attracted attention due to their rich physical properties and potential applications. The essential factor for their functionality is their electronic properties, which can be modified by quantum confinement. Here the electronic states of Gd atom trapped in open Fe corrals on Ag(111) were studied via scanning tunneling spectroscopy. A single spectroscopic peak above the Fermi level is observed after Gd adatoms are trapped inside Fe corrals, while two peaks appear in empty corrals. The single peak position is close to the higher energy peak of the empty corrals. These findings, attributed to quantum confinement of the corrals and Gd structures trapped inside, are supported by tight-binding calculations. This demonstrates and provides insights into atom trapping in open corrals of various diameters, giving an alternative approach to modify the properties of nano-objects.
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Affiliation(s)
- R X Cao
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China
| | - L Sun
- 1] National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China [2] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China
| | - B F Miao
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China
| | - Q L Li
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China
| | - C Zheng
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China
| | - D Wu
- 1] National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China [2] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China
| | - B You
- 1] National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China [2] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China
| | - W Zhang
- 1] National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China [2] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China
| | - P Han
- 1] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China [2] School of Electronic Science and Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China
| | - S D Bader
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - W Y Zhang
- 1] National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China [2] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China
| | - H F Ding
- 1] National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China [2] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China
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Sun L, Cao RX, Miao BF, Feng Z, You B, Wu D, Zhang W, Hu A, Ding HF. Creating an artificial two-dimensional Skyrmion crystal by nanopatterning. Phys Rev Lett 2013; 110:167201. [PMID: 23679635 DOI: 10.1103/physrevlett.110.167201] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Indexed: 06/02/2023]
Abstract
A Skyrmion crystal typically arises from helical spin structures induced by the Dzyaloshinskii-Moriya interaction. Experimentally its physical exploration has been impeded because it is a rarity and is found only within a narrow temperature and magnetic field range. We present a method for the assembly of a two-dimensional Skyrmion crystal based upon a combination of a perpendicularly magnetized film and nanopatterned arrays of magnetic vortices that are geometrically confined within nanodisks. The practical feasibility of the method is validated by micromagnetic simulations and computed Skyrmion number per unit cell. We also quantify a wide range in temperature and field strength over which the Skyrmion crystal can be stabilized without the need for any intrinsic Dzyaloshinskii-Moriya interactions, which otherwise is needed to underpin the arrangement as is the case in the very few known Skyrmion crystal cases. Thus, our suggested scheme involves a qualitative breakthrough that comes with a substantial quantitative advance.
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Affiliation(s)
- L Sun
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China
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Ge YF, Cao RX, Luo DP. Pyrethroid insecticide treated bednets for malaria control in the People's Republic of China. Southeast Asian J Trop Med Public Health 1996; 27:841-3. [PMID: 9253894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Y F Ge
- Henan Provincial Health and Anti-epidemic Center, Zheng Zhou, People's Republic of China
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