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Piao Z, Chai B, Wu Y, Diao H, He Q, Zheng Q, Yan F, Cui W. The association between polyunsaturated fatty acids and chronic obstructive pulmonary disease: a meta-analysis. Food Funct 2024. [PMID: 38738702 DOI: 10.1039/d3fo04675c] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Background: Chronic obstructive pulmonary disease (COPD) is a common respiratory disease, and its development and prognosis are influenced by many nutrients. However, the relationship between polyunsaturated fatty acids (PUFAs) and COPD remains unclear. Methods: This study searched all literature reports on PUFAs and COPD based on electronic databases from their inception up to October 2023. Meta-analysis was conducted to evaluate the differences in PUFAs between COPD patients and controls, the risk of COPD in subjects with different levels of PUFA concentrations, and the effect of PUFA supplementation on COPD. Results: A total of nineteen studies met our inclusion criteria, which included 155 636 subjects. Our meta-analysis results showed that the daily dietary intake of PUFAs was lower in COPD patients than in controls (SMD = -0.80 g, 95% CI: -1.28, -0.31 g, I2 = 98.6%, P < 0.001). Meanwhile, the lower n-3 PUFA levels and higher n-6 PUFA levels were associated with an increased risk of COPD (effect size n-3 = 0.87, 95% CI: 0.77, 0.98, I2 = 52.2%, P = 0.018; effect size n-6 = 1.23, 95% CI: 1.05, 1.43, I2 = 75.2%, P < 0.001). Furthermore, the content of low-density lipoprotein cholesterol in the PUFA supplementation group was higher than that in the control group (SMD = 0.63 mg dL-1, 95% CI: 0.15, 1.12 mg dL-1, I2 = 0.0%, P = 0.697). Conclusions: Our meta-analysis indicated a potential relationship between PUFAs and COPD. More large-scale prospective cohort studies and clinical trials are necessary to validate this relationship.
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Affiliation(s)
- Zhe Piao
- Department of Neurology, China-Japan Union Hospital, Jilin University, Changchun, 130021, P. R. China
| | - Bowen Chai
- Institute for Nutrition and Food Safety, Changchun Center for Disease Control and Prevention, Changchun, 130033, P. R. China
| | - Yuxiao Wu
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, P. R. China.
| | - Houze Diao
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, P. R. China.
| | - Qingzhen He
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, P. R. China.
| | - Qingzhao Zheng
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, P. R. China.
| | - Feifei Yan
- Jinan Center for Disease Control and Prevention, 2 Weiliu Road, Huaiyin District, Jinan, Shandong Province, 250021, P. R. China.
| | - Weiwei Cui
- Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, 1163 Xinmin Avenue, Changchun, 130021, P. R. China.
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Xue H, Han L, Sun H, Piao Z, Cao W, Qian H, Zhao Z, Lang MF, Gu C. Metastasis-associated 1 localizes to the sarcomeric Z-disc and is implicated in skeletal muscle pathology. Cytoskeleton (Hoboken) 2024. [PMID: 38391059 DOI: 10.1002/cm.21841] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 02/08/2024] [Accepted: 02/10/2024] [Indexed: 02/24/2024]
Abstract
Metastasis-associated 1 (MTA1), a subunit of the nucleosome remodeling and histone deacetylation (NuRD) corepressor complex, was reported to be expressed in the cytoplasm of skeletal muscles. However, the exact subcellular localization and the functional implications of MTA1 in skeletal muscles have not been examined. This study aims to demonstrate the subcellular localization of MTA1 in skeletal muscles and reveal its possible roles in skeletal muscle pathogenesis. Striated muscles (skeletal and cardiac) from C57BL/6 mice of 4-5 weeks were collected to examine the expression of MTA1 by Western blotting and immunohistochemistry. Immunofluorescence and immunoelectron microscopy were performed for MTA1, α-actinin (a Z-disc marker protein), and SMN (survival of motor neuron) proteins. Gene Expression Omnibus (GEO) data sets were analyzed using the GEO2R online tool to explore the functional implications of MTA1 in skeletal muscles. MTA1 expression was detected by Western blotting and immunohistochemistry in skeletal and cardiac muscles. Subcellular localization of MTA1 was found in the Z-disc of sarcomeres, where α-actinin and SMN were expressed. Data mining of GEO profiles suggested that MTA1 dysregulation is associated with multiple skeletal muscle defects, such as Duchenne muscular dystrophy, Emery-Dreifuss muscular dystrophy, nemaline myopathy, and dermatomyositis. The GEO analysis also showed that MTA1 expression gradually decreased with age in mouse skeletal muscle precursor cells. The subcellular localization of MTA1 in sarcomeres of skeletal muscles implies its biological roles in sarcomere structures and its possible contribution to skeletal muscle pathology.
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Affiliation(s)
- Hongsheng Xue
- Department of Thoracic Surgery, the First Affiliated Hospital of Dalian Medical University, Dalian, China
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Li Han
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Haidi Sun
- Department of Physiology and Medical Biology, Medical College, Dalian University, Dalian, China
| | - Zhe Piao
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Wenjun Cao
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Haili Qian
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhilong Zhao
- Department of Thoracic Surgery, the Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Ming-Fei Lang
- Department of Physiology and Medical Biology, Medical College, Dalian University, Dalian, China
| | - Chundong Gu
- Department of Thoracic Surgery, the First Affiliated Hospital of Dalian Medical University, Dalian, China
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Tang Z, Wang Y, Qian W, Piao Z, Wang H, Zhang Y. Two-way rushing travel: Cathodic-anodic coupling of Bi 2O 3-SnO@CuO nanowires, a bifunctional catalyst with excellent CO 2RR and MOR performance for the efficient production of formate. J Colloid Interface Sci 2023; 652:1653-1664. [PMID: 37666197 DOI: 10.1016/j.jcis.2023.08.196] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 06/09/2023] [Revised: 08/03/2023] [Accepted: 08/30/2023] [Indexed: 09/06/2023]
Abstract
Electrocatalytic carbon dioxide reduction reaction (CO2RR) generates high value-added products and simultaneously reduces excess atmospheric CO2 concentrations, is regarded as a potential approach to achieve carbon neutrality. However, the kinetic process of the anode oxygen evolution reaction (OER) is slow, resulting in a poor electrochemical efficiency of CO2RR. It is a breakthrough to replace OER with methanol oxidation reaction (MOR), which has more advantageous reaction kinetics. Herein, this work proposed a bifunctional catalyst Bi2O3-SnO modified CuO nanowires (Bi2O3-SnO@CuO NWs) with excellent CO2RR and MOR performance. For CO2RR, Bi2O3-SnO@CuO NWs achieved more than 90% formate selectivity at wide potential windows from -0.88 to -1.08 V (vs. reversible hydrogen electrode (RHE)), peaking at 96.6%. Meanwhile, anodic Bi2O3-SnO@CuO NWs achieved 100 mA cm-2 at a low potential of 1.53 V (vs. RHE), possessing nearly 100% formate selectivity ranging from 1.6 to 1.8 V (vs. RHE). Impressively, by coupling cathodic CO2RR and anodic MOR, the integrated electrolytic cell realized co-production of formate (cathode: 94.7% and anode: 97.5%), minimizing the energy input by approximately 69%, compared with CO2RR. This work provided a meaningful perspective for the design of bifunctional catalysts and coupling reaction systems in CO2RR.
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Affiliation(s)
- Zheng Tang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu, 225127, China
| | - Yu Wang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu, 225127, China
| | - Wenxuan Qian
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu, 225127, China
| | - Zhe Piao
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu, 225127, China
| | - Honggui Wang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu, 225127, China.
| | - Ya Zhang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu, 225127, China.
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Oh J, Piao Z, Cho HJ, Chong Y, Kim SS, Kim JH, Kang MW. CT-based three-dimensional invasiveness analysis of adenocarcinoma presenting as pure ground-glass nodules. Transl Cancer Res 2023; 12:765-773. [PMID: 37180668 PMCID: PMC10174765 DOI: 10.21037/tcr-22-2327] [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: 10/02/2022] [Accepted: 03/14/2023] [Indexed: 05/16/2023]
Abstract
Background We invest computed tomography (CT) image differences between non-invasive adenocarcinomas (NIAs) and invasive adenocarcinomas (IAs) presenting as pure ground glass nodules (GGNs). Methods From 2013 to 2019, 48 pure GGNs were surgically resected in 45 patients. Of these, 40 were pathologically diagnosed as non-small cell lung cancers (NSCLCs). We assessed them using the Synapse Vincent (Fujifilm Co., Ltd., Tokyo, Japan) three-dimensional (3D) analysis system; we drew histograms of the CT densities. We calculated the maximum, minimum, means, and standard deviations of the densities. The proportions of GGNs of high CT density were compared between the two groups. The diagnostic performance was investigated via receiver operating curve (ROC) analysis. Results Of the 40 pure GGNs, 20 were NIAs (4 adenocarcinomas in situ and 16 minimally IAs) and 20 IAs. Significant correlations were evident between histological invasiveness and the maximum and mean CT densities and the standard deviation. Neither the nodule volume nor the minimum CT density significantly predicted invasiveness. A CT volume density proportion >-300 Hounsfield units optimally predicted the invasiveness of pure GGNs; the cutoff was 5.41% with a sensitivity of 85% and a specificity of 95%. Conclusions CT density reflected the invasiveness of pure GGNs. A CT volume proportion density >-300 Hounsfield units may significantly predict histological invasiveness.
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Affiliation(s)
- Jieun Oh
- Center for Advanced Medical Computing and Analysis, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Zhe Piao
- Department of Thoracic Surgery, The Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Hyun Jin Cho
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Sejong Hospital, Sejong, South Korea
| | - Yooyoung Chong
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Song Soo Kim
- Department of Radiology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Jin Hwan Kim
- Department of Radiology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Min-Woong Kang
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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5
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Wang H, Piao Z, Ma H, Cao L, Liu J, Wu J. [Short-term exposure to gossypol causes reversible reproductive toxicity and nephrotoxicity in mice]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:251-256. [PMID: 36946045 PMCID: PMC10034549 DOI: 10.12122/j.issn.1673-4254.2023.02.13] [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: 03/23/2023]
Abstract
OBJECTIVE To study the toxic effects of short-term exposure to gossypol on the testis and kidney in mice and whether these effects are reversible. METHODS Twenty 7 to 8-week-old male mice were randomized into blank control group, solvent control group, gossypol treatment group and drug withdrawal group. In the former 3 groups, the mice were subjected to daily intragastric administration of 0.3 mL of purified water, 1% sodium carboxymethylcellulose solution, and 30 mg/mL gossypol solution for 14 days, respectively; In the drug withdrawal group, the mice were treated with gossypol solution in the same manner for 14 days followed by treatment with purified water for another 14 days. After the last administration, the mice were euthanized and tissue samples were collected. The testicular tissue was weighed and observed microscopically with HE and PAS staining; the kidney tissue was stained with HE and examined for mitochondrial ATPase activity. RESULTS Compared with those in the control group, the mice with gossypol exposure showed reduced testicular seminiferous epithelial cells with rounded seminiferous tubules, enlarged space between the seminiferous tubules, interstitium atrophy of the testis, and incomplete differentiation of the spermatogonia. The gossypol-treated mice also presented with complete, non-elongated spermatids, a large number of cells in the state of round spermatids, and negativity for acrosome PAS reaction; diffuse renal mesangial cell hyperplasia, increased mesangial matrix, and adhesion of the mesangium to the wall of the renal capsule were observed, with significantly shrinkage or even absence of the lumens of the renal capsules and reduced kidney mitochondrial ATPase activity. Compared with the gossypol-treated mice, the mice in the drug withdrawal group showed obvious recovery of morphologies of the testis and the kidney, acrosome PAS reaction and mitochondrial ATPase activity. CONCLUSIONS Shortterm treatment with gossypol can cause reproductive toxicity and nephrotoxicity in mice, but these toxic effects can be reversed after drug withdrawal.
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Affiliation(s)
- H Wang
- Demonstration Center for Experimental Basic Medicine Education, Wuhan University, Wuhan 430071, China
| | - Z Piao
- School of Stomatology, Wuhan University, Wuhan 430071, China
| | - H Ma
- School of Stomatology, Wuhan University, Wuhan 430071, China
| | - L Cao
- School of Stomatology, Wuhan University, Wuhan 430071, China
| | - J Liu
- Demonstration Center for Experimental Basic Medicine Education, Wuhan University, Wuhan 430071, China
| | - J Wu
- Demonstration Center for Experimental Basic Medicine Education, Wuhan University, Wuhan 430071, China
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Cai W, Li H, Wen X, Huang H, Chen G, Cheng H, Wu H, Piao Z. Changes in Microeukaryotic Communities in the Grand Canal of China in Response to Floods. Int J Environ Res Public Health 2022; 19:13948. [PMID: 36360826 PMCID: PMC9655333 DOI: 10.3390/ijerph192113948] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/22/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Floods are frequent natural disasters and could have serious impacts on aquatic environments. Eukaryotic communities in artificial canals influenced by floods remain largely unexplored. This study investigated the spatiotemporal variabilities among eukaryotes in response to floods in the Grand Canal, China. Generally, 781,078 sequence reads were obtained from 18S rRNA gene sequencing, with 304,721 and 476,357 sequence reads detected before and after flooding, respectively. Sediment samples collected after the floods exhibited a higher degree of richness and biodiversity but lower evenness than those before the floods. The eukaryotic communities changed from Fungi-dominated before floods to Stramenopile-dominated after floods. The spatial turnover of various species was the main contributor to the longitudinal construction of eukaryotes both before the floods (βSIM = 0.7054) and after the floods (βSIM = 0.6858). Some eukaryotic groups responded strongly to floods and might pose unpredictable risks to human health and environmental health. For example, Pezizomycetes, Catenulida, Glomeromycetes, Ellipura, etc. disappeared after the floods. Conversely, Lepocinclis, Synurale, Hibberdiales, Acineta, Diptera, and Rhinosporidium were all frequently detected after the floods, but not prior to the floods. Functional analyses revealed amino acid metabolism, carbohydrate metabolism, translation, and energy metabolism as the main metabolic pathways, predicting great potential for these processes in the Grand Canal.
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Affiliation(s)
- Wei Cai
- College of Environmental Science and Engineering, Yangzhou University, Huayang West Road #196, Yangzhou 225009, China
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, Hohai University, Xikang Road #1, Nanjing 210098, China
| | - Huiyu Li
- College of Environmental Science and Engineering, Yangzhou University, Huayang West Road #196, Yangzhou 225009, China
| | - Xin Wen
- College of Environmental Science and Engineering, Yangzhou University, Huayang West Road #196, Yangzhou 225009, China
| | - Huang Huang
- College of Environmental Science and Engineering, Yangzhou University, Huayang West Road #196, Yangzhou 225009, China
| | - Guwang Chen
- College of Environmental Science and Engineering, Yangzhou University, Huayang West Road #196, Yangzhou 225009, China
| | - Haomiao Cheng
- College of Environmental Science and Engineering, Yangzhou University, Huayang West Road #196, Yangzhou 225009, China
| | - Hainan Wu
- College of Environmental Science and Engineering, Yangzhou University, Huayang West Road #196, Yangzhou 225009, China
| | - Zhe Piao
- College of Environmental Science and Engineering, Yangzhou University, Huayang West Road #196, Yangzhou 225009, China
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Gu Y, Zhou C, Piao Z, Yuan H, Jiang H, Wei H, Zhou Y, Nan G, Ji X. Cerebral edema after ischemic stroke: Pathophysiology and underlying mechanisms. Front Neurosci 2022; 16:988283. [PMID: 36061592 PMCID: PMC9434007 DOI: 10.3389/fnins.2022.988283] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/01/2022] [Indexed: 11/30/2022] Open
Abstract
Ischemic stroke is associated with increasing morbidity and has become the main cause of death and disability worldwide. Cerebral edema is a serious complication arising from ischemic stroke. It causes an increase in intracranial pressure, rapid deterioration of neurological symptoms, and formation of cerebral hernia, and is an important risk factor for adverse outcomes after stroke. To date, the detailed mechanism of cerebral edema after stroke remains unclear. This limits advances in prevention and treatment strategies as well as drug development. This review discusses the classification and pathological characteristics of cerebral edema, the possible relationship of the development of cerebral edema after ischemic stroke with aquaporin 4, the SUR1-TRPM4 channel, matrix metalloproteinase 9, microRNA, cerebral venous reflux, inflammatory reactions, and cerebral ischemia/reperfusion injury. It also summarizes research on new therapeutic drugs for post-stroke cerebral edema. Thus, this review provides a reference for further studies and for clinical treatment of cerebral edema after ischemic stroke.
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Affiliation(s)
- Yuhang Gu
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Chen Zhou
- Beijing Institute of Brain Disorders, Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Capital Medical University, Beijing, China
| | - Zhe Piao
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Honghua Yuan
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Huimin Jiang
- Beijing Institute of Brain Disorders, Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Capital Medical University, Beijing, China
| | - Huimin Wei
- Advanced Innovation Center for Big Data-Based Precision Medicine, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yifan Zhou
- Beijing Institute of Brain Disorders, Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Capital Medical University, Beijing, China
| | - Guangxian Nan
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, China
- *Correspondence: Guangxian Nan,
| | - Xunming Ji
- Beijing Institute of Brain Disorders, Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Capital Medical University, Beijing, China
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- Xunming Ji,
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Huang L, Tang S, Zou R, Ouyang KX, Piao Z. The three-dimensional evaluation of positional change in mandibular condyle after intraoral vertical ramus osteotomy. J Stomatol Oral Maxillofac Surg 2020; 122:477-481. [PMID: 32977041 DOI: 10.1016/j.jormas.2020.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 09/07/2020] [Accepted: 09/10/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES The purpose of this study was to compare the changes of the condylar axis, the anteroposterior condylar position relative to the glenoid fossa, after intraoral vertical ramus osteotomy (IVRO). STUDY DESIGN 21 patients diagnosed as skeletal class III malocclusion underwent IVRO and were followed according to the authors' postoperative management regimen. The three-dimensional positions of the condyles were evaluated by cone-beam computerized tomography (CBCT) at pre-op, post-op, and at follow-up. CBCT images were referenced to assess the condylar axis change and the anteroposterior condylar position in the glenoid fossa. A repeated-measures analysis of variance (P<0.05) also was performed. RESULTS After surgery, both the axial condylar angles and the anteroposterior condylar position were significantly different (P<0.05). The coronal condylar axis rotated outwardly. The anteroposterior condylar position in the glenoid fossa had moved from the concentric to the anterior position. But the condyle changes between post-op and follow-up (P>0.05) were insignificant. CONCLUSIONS With postoperative intermaxillary elastic traction, the condyles changed their positions physiologically for newly established jaw movement after IVRO.
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Affiliation(s)
- L Huang
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - S Tang
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - R Zou
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - K X Ouyang
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Z Piao
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China.
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Abstract
Background Recent advances in imaging modalities and recommended low-dose computed tomography screening programs have made it easier to diagnose early lung cancer. However, the diagnosis of small ground-glass nodules (GGNs) has been problematic due to inappropriate specimen procurement and failure of conventional percutaneous core needle biopsy. Thus, we aimed to evaluate the usefulness of electromagnetic navigation bronchoscopy (ENB)-guided video-assisted lung resection for not only the diagnosis but also treatment of GGNs. Methods From 2017 to 2019, 110 patients with suspicious lung cancer lesions that were not diagnosed by conventional procedure underwent ENB-guided lung resection. Among 35 cases of GGNs, 33 cases of localization were included in this study (two cup biopsy cases were excluded). We used SuperDimension™ for the ENB procedure. After general anesthesia, indigo carmine (0.3–0.5 mL) was injected, and GGNs were resected through video-assisted thoracoscopic surgery. Results Of the 33 GGNs, 16 were pure (2 adenocarcinomas in situ, 5 minimally invasive adenocarcinomas (MIAs), 3 adenocarcinomas, and 6 benign lesions) and 17 were mixed (1 MIA, 11 adenocarcinomas, and 5 benign lesions). The mean size of all lesions was 11.2±7.78 mm, mean distance to the pleura was 11.2±14.2 mm, and mean ENB procedure time was 18.8±8.88 minutes. Dye localization and surgical resection of GGN were successful in all cases. There was no procedure-related complication. Conclusions ENB is a feasible and highly accurate localization method for minimally invasive lung resection of small GGNs.
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Affiliation(s)
- Zhe Piao
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Sung Joon Han
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Hyun Jin Cho
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Min-Woong Kang
- Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
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Jeon EJ, Cho YS, Kim AH, Shim JM, Kim YS, Piao Z, Shin YC, Kwon J. Enhanced alcohol degradation and hepatic protective effects of an Acetobacter Pasteurianus-derived product, CureZyme-ACE, in an acute intoxication rat model. Lab Anim Res 2020; 36:15. [PMID: 32518763 PMCID: PMC7275519 DOI: 10.1186/s42826-020-00050-4] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/27/2020] [Indexed: 02/24/2023] Open
Abstract
Excessive alcohol consumption induces acute intoxication and various hepatic diseases. In this study, we investigated the effect of the CureZyme-ACE (CA), Acetobacter Pasteurianus (AP)-derived product, in acute intoxication rats. The ethanol and acetaldehyde levels of serum were lower in rats treated with CA than those who only treated ethanol. The activities of alcohol dehydrogenase and acetaldehyde dehydrogenase also recovered faster in the CA group than only-ethanol group. The transaminase levels (AST, ALT) in the CA group were significantly lower than only-ethanol group. In addition, Hepatic histological analyses and stomach wall were demonstrated that the CA-treated group recovered faster than only-ethanol group. With regard to most characteristics, we found that CA had dose-dependent effects. At high concentrations of CA, there were no differences in the tested parameters compared to those of normal rats. These findings indicate that CA reduces the serum alcohol concentration and some of the hepatic damage caused by alcohol intoxication.
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Affiliation(s)
- Eun-Jong Jeon
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Jeonbuk National UniversityJeonbuk, 54596 Iksan, Republic of Korea
| | - Yun-Sang Cho
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Jeonbuk National UniversityJeonbuk, 54596 Iksan, Republic of Korea
| | - Ae-Hyang Kim
- Amicogen, Inc., Jinsung, Jinju, Republic of Korea
| | - Jae-Min Shim
- Amicogen, Inc., Jinsung, Jinju, Republic of Korea
| | - Yi-Soo Kim
- Amicogen, Inc., Jinsung, Jinju, Republic of Korea
| | - Zhe Piao
- Amicogen, Inc., Jinsung, Jinju, Republic of Korea
| | | | - Jungkee Kwon
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Jeonbuk National UniversityJeonbuk, 54596 Iksan, Republic of Korea
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Mei L, Piao Z, Hu J, Shi L, Bai Y, Yin S. Lysinimonas yzui sp. nov., isolated from cattail root soil from mine tailings. Int J Syst Evol Microbiol 2020; 70:2003-2007. [DOI: 10.1099/ijsem.0.004013] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A yellow-pigmented, Gram-stain-negative, aerobic, non-motile rod shaped, mesophilic bacterium, designated strain N7XX-4T, was isolated from cattail root grown on the mine tailings of Phoenix mountain, Tongling city, Anhui Province (PR China). Analysis of the 16S rRNA gene sequence revealed that the strain represented a novel member of the family
Microbacteriaceae
. The nearest phylogenetic neighbour was
Lysinimonas kribbensis
MSL-13T (97.8 % 16S rRNA gene sequence similarity). The most abundant fatty acid in whole cells of N7XX-4T was anteiso-C15 : 0 (29.9 %). The predominant menaquinones were MK-12(H2), MK-13(H2) and MK-11(H2). The peptidoglycan type of the isolate was B1δ with l-Lys as the diagnostic cell-wall diamino acid. On the basis of differences in phenotypic and genotypic characteristics, strain N7XX-4T (=CGMCC 1.16548T=DSM 106791T=JCM 32630T) is designated as the type strain of a novel species of the genus
Lysinimonas
, for which the name Lysinimonas yzui sp. nov. is proposed.
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Affiliation(s)
- Lijuan Mei
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Zhe Piao
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Jian Hu
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Linlin Shi
- Research Center of Agricultural Resource and Environment, Institute of Agricultural Science in Taihu Lake District, Suzhou 215000, PR China
| | - Yanchao Bai
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Shixue Yin
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
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12
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Ma B, He L, Xia Y, Chi L, Piao Z, Sun X, Dai J, Yang C, Shen F. The Value of Serum Amyloid A on Early Diagnosing and Prognosis for Perioperative Patients with Extracorporeal Circulation. Indian J Pharm Sci 2020. [DOI: 10.36468/pharmaceutical-sciences.spl.29] [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: 11/22/2022] Open
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13
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Yang Z, Liang Q, Ouyang K, Piao Z. Amniotic band syndrome with Tessier number 4 and 7 clefts: a case report. Br J Oral Maxillofac Surg 2019; 57:816-817. [DOI: 10.1016/j.bjoms.2019.07.003] [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] [Received: 04/15/2019] [Accepted: 07/03/2019] [Indexed: 10/26/2022]
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14
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Lin D, Zhang L, Mei J, Chen J, Piao Z, Lee G, Dong Y. Mutation of the rice TCM12 gene encoding 2,3-bisphosphoglycerate-independent phosphoglycerate mutase affects chlorophyll synthesis, photosynthesis and chloroplast development at seedling stage at low temperatures. Plant Biol (Stuttg) 2019; 21:585-594. [PMID: 30803106 DOI: 10.1111/plb.12978] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 02/19/2019] [Indexed: 06/09/2023]
Abstract
Glycolysis is a central metabolic pathway that provides energy and products of primary metabolites. 2,3-Biphosphoglycerate-independent phosphoglycerate mutase (iPGAM) is a key enzyme that catalyses the reversible interconversion of 3-phosphoglycerate (3-PGA) to 2-phosphoglycerate (2-PGA) in glycolysis. Low temperature is a common abiotic stress in rice production. However, the mechanism for rice iPGAM genes is not fully understood at low temperature. In this study, the rice mutant tcm12, with chlorosis, malformed chloroplasts and impaired photosynthesis, was grown at a low temperature (<20 °C) to the three-leaf stage, while the normal phenotype at 32 °C was used. Chlorophyll fluorescence analysis and transmission electron microscopy were used to examine features of the tcm12 mutant. The inheritance behaviour and function of TCM12 were then analysed thorough map-based cloning, transgenic complementation and subcellular localisation. The thermo-sensitive chlorosis phenotype was caused by a single nucleotide mutation (T→C) on the fifth exon of TCM12 (LOC_Os12g35040) encoding iPGAM, localised to both nucleus and membranes. In addition, TCM12 was constitutively expressed, and its disruption resulted in down-regulation of some genes associated with chlorophyll biosynthesis and photosynthesis at low temperatures (20 °C). This is the first report of the involvement of rice iPGAM gene in chlorophyll synthesis, photosynthesis and chloroplast development, providing new insights into the mechanisms underlying early growth of rice at low temperatures.
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Affiliation(s)
- D Lin
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - L Zhang
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - J Mei
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - J Chen
- College of Life Sciences, Shanghai Normal University, Shanghai, China
- Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Z Piao
- Crop Breeding and Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Fengxian District, Shanghai 3, China
| | - G Lee
- National Institute of Agricultural Science, Jeon Ju, Korea
| | - Y Dong
- College of Life Sciences, Shanghai Normal University, Shanghai, China
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15
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Ma TZ, Piao Z, Jin SY, Kwak YG. Differential expression of serum proteins in multiple myeloma. Exp Ther Med 2019; 17:649-656. [PMID: 30651846 PMCID: PMC6307483 DOI: 10.3892/etm.2018.7010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 04/08/2018] [Accepted: 08/14/2018] [Indexed: 01/27/2023] Open
Abstract
The exact cause instigating multiple myeloma (MM) has not been fully elucidated, and the disease has a median survival of 6 months without any treatment. To identify potential biomarkers of MM, serum proteins reflecting alteration in their proteomes were analyzed in 6 patients with MM compared with 6 healthy controls using two-dimensional electrophoresis (2-DE) and matrix-assisted laser desorption/ionization time-of flight mass spectrometry. The most notable differentially expressed proteins were validated by immunoblotting and changes in mRNA expression were evaluated by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). A total of 11 differentially expressed protein spots were found. The expression levels of 7 proteins [Immunoglobulin heavy constant µ; proto-oncogene diffuse B-cell lymphoma (DBL2); 26S protease regulatory subunit 4 (P26s4); serum albumin; haptoglobin; and two unknown proteins with isoelectronic point (pI) of 6.41 and molecular weight of 35.4 kDa, and pI of 8.05 and molecular weight of 27.4 kDa, respectively] were downregulated in MM compared with healthy controls. Expression of gel actin-related protein 2/3 complex subunit 1A (ARPC1A); immunoglobulin heavy constant γ 1; fibrinogen α chain (FGA) fragment D; and zinc finger protein 70 were increased in serum of MM patients. Protein expressions of ARPC1A, FGA, P26s4 and DBL2 were measured by immunoblotting in an independent cohort of 12 MM patients and 10 healthy controls. RT-qPCR analysis demonstrated that ARPC1A expression only mimicked protein expression, whereas FGA, PSMC1 (encoding P26s4) and MCF2 (encoding DBL2) did not exhibit significant changes in mRNA expression between control and MM samples. These proteins represent putative serological biomarkers for patients with MM.
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Affiliation(s)
- Tian-Ze Ma
- Department of Hematology, Yanbian University Hospital, Yanji, Jilin 133000, P.R. China
| | - Zhe Piao
- Department of Hematology, Yanbian University Hospital, Yanji, Jilin 133000, P.R. China
| | - Sheng-Yu Jin
- Department of Hematology, Yanbian University Hospital, Yanji, Jilin 133000, P.R. China
| | - Yong-Geun Kwak
- Department of Pharmacology, Chonbuk National University Medical School, Jeonju, Jeonbuk 560-182, Republic of Korea
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16
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Do AR, Cho SJ, Cho YY, Kwon EY, Choi JY, Lee JH, Han Y, Kim YS, Piao Z, Shin YC, Choi MS. Antiobesity Effects of Short-Chain Chitosan in Diet-Induced Obese Mice. J Med Food 2018; 21:927-934. [PMID: 30183503 DOI: 10.1089/jmf.2017.4115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Dietary chitosan is known for its antiobesity effects by combining with bile acid and lipid droplets. When the chitosan structure is broken into short chains, the fat-binding capacity increases. The aim of this study was to compare long-chain chitosan (LC) with short-chain chitosan (SC) for their antiobesity effects in high-fat diet (HFD)-induced obese C57BL/6J mice for 12 weeks. The body weights of mice in both chitosan groups were decreased, especially in the SC group compared with the LC group. Total white adipose tissue and visceral fat weights were also decreased in mice of the SC group more than those of the HFD group. Moreover, SC supplementation lowered plasma triglyceride (TG) and cholesterol levels, whereas LC only lowered plasma free fatty acid level. Fecal lipids were increased in mice of both LC and SC groups, and hepatic TG and cholesterol levels were decreased in both groups. SC lowered phosphatidate phosphohydrolase activity and elevated β-oxidation in the liver. Furthermore, SC decreased the expression of the hepatic lipid-regulating genes, including fatty acid synthase, peroxisome proliferator-activated receptor (PPAR)γ1, and PPARγ2; and increased the expression of carnitine palmitoyl transferase 1α and peroxisome proliferator-activated receptor γ coactivator (PGC)1α genes. In conclusion, we demonstrated that long-term supplementation of SC can ameliorate body weight and lipid levels by increasing lipid excretion and regulating lipid metabolism, including some enzyme activities and gene expression levels, in HFD-induced obese mice.
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Affiliation(s)
- Ah Ra Do
- 1 Department of Food Science and Nutrition, Daegu, Republic of Korea.,2 Center for Food and Nutritional Genomics Research, Kyungpook National University , Daegu, Republic of Korea
| | - Su-Jung Cho
- 1 Department of Food Science and Nutrition, Daegu, Republic of Korea.,2 Center for Food and Nutritional Genomics Research, Kyungpook National University , Daegu, Republic of Korea
| | | | - Eun-Young Kwon
- 1 Department of Food Science and Nutrition, Daegu, Republic of Korea.,2 Center for Food and Nutritional Genomics Research, Kyungpook National University , Daegu, Republic of Korea
| | - Ji-Young Choi
- 1 Department of Food Science and Nutrition, Daegu, Republic of Korea.,2 Center for Food and Nutritional Genomics Research, Kyungpook National University , Daegu, Republic of Korea
| | - Jeong Hyeon Lee
- 1 Department of Food Science and Nutrition, Daegu, Republic of Korea.,2 Center for Food and Nutritional Genomics Research, Kyungpook National University , Daegu, Republic of Korea
| | - Youngji Han
- 1 Department of Food Science and Nutrition, Daegu, Republic of Korea.,2 Center for Food and Nutritional Genomics Research, Kyungpook National University , Daegu, Republic of Korea
| | - Yi Soo Kim
- 3 Amicogen, Inc. , Jinju, Republic of Korea
| | - Zhe Piao
- 3 Amicogen, Inc. , Jinju, Republic of Korea
| | | | - Myung-Sook Choi
- 1 Department of Food Science and Nutrition, Daegu, Republic of Korea.,2 Center for Food and Nutritional Genomics Research, Kyungpook National University , Daegu, Republic of Korea
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17
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Elia CJ, Cabanne M, Piao Z, Lee A, Goldenberg T, Chhabra V. A rare case of intracranial teratocarcinosarcoma: Case report and review of literature. Surg Neurol Int 2018; 9:167. [PMID: 30186668 PMCID: PMC6108165 DOI: 10.4103/sni.sni_54_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 02/13/2018] [Accepted: 07/02/2018] [Indexed: 11/23/2022] Open
Abstract
Background: Teratocarcinosarcoma (TCS) is a rare malignant neoplasm with epithelial and mesenchymal components such as fibroblasts, cartilage, bone and smooth muscle. With less than 100 total reported cases, this malignant neoplasm is rarely encountered by neurosurgeons because it primarily involves the nasal cavity and paranasal sinuses. Case Description: A 55-year-old male with chronic frontal headaches was found to have a frontal mass with involvement of nasal sinus and right ethmoid sinus. The patient underwent preoperative embolization of tumor followed by bilateral frontal craniotomy for near total resection of the tumor. Patient did well postoperatively without new neurological deficits. Conclusion: Although cases with intracranial involvement are scarce, treatment with surgical resection with or without adjuvant treatments of chemotherapy and radiation therapy is the most widely accepted with goal for gross total resection. In our case, we achieved near total resection and the patient continues to do well without any gross neurological deficits.
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Affiliation(s)
- Christopher J Elia
- Division of Neurosurgery, Riverside University Health System, Moreno Valley, Fontana, CA, USA.,Department of Neurosurgery, Fontana, CA, USA
| | - Marc Cabanne
- Division of Neurosurgery, Riverside University Health System, Moreno Valley, Fontana, CA, USA.,Department of Neurosurgery, Fontana, CA, USA
| | - Zhe Piao
- Department of Pathology, Fontana, CA, USA
| | - Andrew Lee
- Department of Head and Neck Surgery, Fontana, CA, USA
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18
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Nishimiya K, Yin B, Piao Z, Osman H, Ryu J, Leung HM, Sharma G, Gardecki JA, Tearney GJ. P2271Super high-resolution OCT for endothelial cell visualization in the coronary arteries. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Nishimiya
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - B Yin
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - Z Piao
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - H Osman
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - J Ryu
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - H M Leung
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - G Sharma
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - J A Gardecki
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, United States of America
| | - G J Tearney
- Massachusetts General Hospital, Wellman Center for Photomedicine, Department of Pathology, Boston, United States of America
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19
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Wang Z, Li Y, Zhou F, Piao Z, Hao J. β-elemene enhances anticancer bone neoplasms efficacy of paclitaxel through regulation of GPR124 in bone neoplasms cells. Oncol Lett 2018; 16:2143-2150. [PMID: 30008912 PMCID: PMC6036473 DOI: 10.3892/ol.2018.8909] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 03/25/2017] [Accepted: 05/24/2018] [Indexed: 12/19/2022] Open
Abstract
The purpose of the present study was to investigate the anticancer effects of β-elemene and paclitaxel for bone neoplasms. MTT assay, reverse transcription-quantitative polymerase chain reaction, western blotting, flow cytometry and immunostaining were used to analyze the combined effects of β-elemene and paclitaxel both in vitro and in vivo. The results demonstrated that combined treatment of β-elemene and paclitaxel (β-elemene-paclitaxel) significantly inhibited growth and aggressiveness of U-2OS cells compared with either β-elemene or paclitaxel treatment alone. It was demonstrated that β-elemene promoted paclitaxel-induced apoptosis of U-2OS cells. Anti-apoptosis B-cell lymphoma (Bcl)-2 and Bcl-w genes were downregulated and pro-apoptotic Bcl-2-associated agonist of cell death and caspase-3 genes were upregulated in U-2OS cells following treatment with β-elemene-paclitaxel. Treatment of β-elemene-paclitaxel arrested the cell cycle and decreased cyclin-dependent kinase, cyclin-B1, P21 and P27 expression levels and decreased resistant genes alterations of ATP binding cassette subfamily B member 1, LDL receptor related protein and TS in U-2OS cells. Results demonstrated that β-elemene-paclitaxel decreased G-protein coupled receptor 124 (GPR124), vascular endothelial growth factor receptor, matrix metallopeptidase (MMP)-3, MMP-9 expression levels and increased endostatin, TIMP metallopeptidase inhibitor (TIMP)-1, TIMP-2 expression in U-2OS cells. In vivo assay demonstrated that β-elemene-paclitaxel treatment inhibited tumor growth of BALB/c-nu/nu nude mice and prolonged survival rate of tumor-bearing mice. Immunostaining demonstrated that β-elemene-paclitaxel treatment increased apoptotic bodies, GPR124 and increased endostatin, TIMP-1 and TIMP-2 expression in tumor tissues. In conclusion, these results suggest that the combined treatment of β-elemene-paclitaxel is more effective at inhibiting bone neoplasm growth than β-elemene or paclitaxel single treatment GPR124.
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Affiliation(s)
- Zongze Wang
- Department of Orthopedics, Nankai Hospital of Tianjin, Tianjin 300100, P.R. China
| | - Ying Li
- Renal Department of Internal Medicine, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Fengxin Zhou
- Department of Orthopedics, Nankai Hospital of Tianjin, Tianjin 300100, P.R. China
| | - Zhe Piao
- Department of Orthopedics, Nankai Hospital of Tianjin, Tianjin 300100, P.R. China
| | - Jian Hao
- Department of Orthopedics, Nankai Hospital of Tianjin, Tianjin 300100, P.R. China
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20
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Wun CM, Piao Z, Hong KT, Choi JY, Hong CR, Park JD, Park KD, Shin HY, Kang HJ. Effect of donor STAT4 polymorphism rs7574865 on clinical outcomes of pediatric acute leukemia patients after hematopoietic stem cell transplant. Int Immunopharmacol 2016; 43:62-69. [PMID: 27960128 DOI: 10.1016/j.intimp.2016.12.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/17/2016] [Accepted: 12/06/2016] [Indexed: 01/08/2023]
Abstract
STAT4 polymorphism, rs7574865 is linked to various autoimmune diseases such as systemic lupus erythematosus and rheumatoid arthritis. Its T minor allele is associated with higher STAT4 mRNA and protein expression, indicating a stronger skewed immune response than the norm. Although widely studied in autoimmune disease patients and the general population, its effect on immunocompromised subjects is still unknown. Especially in situations, i.e. post-hematopoietic stem cell transplantation (post-HSCT), where control of the immune response is crucial. Hence, this study investigates if the presence of the T minor allele in donors would affect immunological response and clinical outcomes post-HSCT. Samples from 161 pediatric patients who underwent allogeneic HSCT for acute leukemia and showed complete chimerism by donor cells were obtained. Six clinical outcomes were investigated; hepatic veno-occlusive disease, acute graft-vs-host disease, chronic graft-vs-host disease, cytomegalovirus (CMV) infection, relapse and overall survival. The TT genotype was found to be significant in the occurrence of CMV infection (P=0.049), showing higher incidence of CMV infection compared to the others. Multivariate analysis confirmed that association of the TT genotype is independent from other variables in CMV infection occurrence (P=0.010). This is the first study on STAT4 polymorphism rs7574865 in allogeneic HSCT as well as immunocompromised patients. As the TT genotype is associated with autoimmune diseases, our results seem at a paradox with current evidence hinting at a different role of STAT4 in normal circumstances versus immunocompromised patients. Further investigation is needed to elicit the reason behind this and discover novel applications for better post-transplant outcomes.
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Affiliation(s)
- Cheng Mun Wun
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Zhe Piao
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kyung Taek Hong
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jung Yoon Choi
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Che Ry Hong
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - June Dong Park
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kyung Duk Park
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hee Young Shin
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyoung Jin Kang
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.
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21
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Sontakke SB, Jung JH, Piao Z, Chung HJ. Orally Available Collagen Tripeptide: Enzymatic Stability, Intestinal Permeability, and Absorption of Gly-Pro-Hyp and Pro-Hyp. J Agric Food Chem 2016; 64:7127-7133. [PMID: 27573716 DOI: 10.1021/acs.jafc.6b02955] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Collagen-derived small peptides, such as Gly-Pro-Hyp (GPH) and Pro-Hyp (PH), play a role in various physiological functions. Although collagen degrades in the gastrointestinal tract randomly and easily, it is not readily cleaved into bioactive peptides. To increase the bioavailability of bioactive peptides, a collagen tripeptide (CTP) was prepared from fish scales by the digestion method using collagenase from nonpathogenic Bacillus bacteria. It was demonstrated that Hyp-containing peptides-GPH and PH-were better absorbed and reached higher plasma levels after the oral administration of CTPs in rats compared to high molecular weight collagen peptide (H-CP). GPH and PH were stable in gastrointestinal fluid and rat plasma for 2 h, and GPH was able to be transported across the intestinal cell monolayer. These results suggest that the ingestion of CTP is an efficient method for taking bioactive peptides orally due to the enzymatic stability and intestinal permeability of GPH and PH.
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Affiliation(s)
- Sneha B Sontakke
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University , 501 Jinjudaero, Jinju 52828, South Korea
| | - Jin-Hee Jung
- Amicogen Inc. , 64 Dongburo 1259, Jinsung, Jinju 52621, South Korea
| | - Zhe Piao
- Amicogen Inc. , 64 Dongburo 1259, Jinsung, Jinju 52621, South Korea
| | - Hye Jin Chung
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University , 501 Jinjudaero, Jinju 52828, South Korea
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22
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Abstract
We studied the pathologic findings of 10 resected specimens from the 9 patients who underwent repeated intestinal resections owing to recurrent intestinal Behçet's disease and compared the pathologic features with the findings of the primary lesions and another 13 resected specimens with the disease without recurrence. The repeated resection of intestinal Behçet's disease was a frequent event (9/22, 41%), and the mean period between operations was 2.6 years. None of the clinical features were significantly related to recurrence. All the lesions included the anastomosis area. The pathologic characteristics of recurrent intestinal Behçet's disease are deep ulcer (100%), transmural fibroinflammatory reaction (100%), and vasculitis (60%). There were no pathologic differences between the primary and recurrent lesions.
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Affiliation(s)
| | | | - Hoguen Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
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23
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Kim YS, Lee SJ, Choi JY, Kim YH, Desta KT, Piao Z, Choi SL, Nam SJ, Kang KY, Abd El-Aty AM, Shin YC, Shin SC. Determination of process-related impurities in N-acetylglucosamine prepared by chemical and enzymatic methods: structural elucidation and quantification. Arch Pharm Res 2016; 39:937-45. [PMID: 27220340 DOI: 10.1007/s12272-016-0755-3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 04/29/2016] [Indexed: 11/26/2022]
Abstract
β-N-acetylglucosamine (β-AG) is a monosaccharide distributed widely in living organisms with various pivotal roles. The presence of particulates and impurities can affect the safety and efficacy of a product for its intended duration of use. Thus, the current study was carried out to identify and quantify the potentially-harmful process related impurities; namely α-N,6-diacetylglucosamine (α-DAG) and α-N-acetylglucosamine (α-AG), derived from the chemical and enzymatic synthesis of β-AG. The impurities were characterized using a high resolution mass spectrometry, a nuclear magnetic resonance spectroscopy, and liquid chromatography-tandem mass spectrometry (LC/MS/MS). The developed method showed a good linearity (R (2) ≥ 0.998), satisfactory precision (≤6.1 % relative standard deviation), intra- and inter-day accuracy (88.20-97.50 %), extraction recovery (89.30-110.50 %), matrix effect (89.70-105.20 %), and stability (92.70-101.60 %). The method was successfully applied to determine the level of α-DAG that was 3.04 and 0.07 % of the total β-AG, following chemical and enzymatic methods, respectively. It can be concluded that the enzymatic rather than the chemical method is more efficient for the synthesis of β-AG. Characterization of impurities heeds the signal for acquiring and evaluating data that establishes biological safety.
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Affiliation(s)
- Yi Soo Kim
- Amicogen, Inc., 64 Dongburo 1259, Jinsung, Jinju, 660-852, Republic of Korea
| | - Sung Joong Lee
- Department of Chemistry and Research Institute of Life Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Jin Young Choi
- Amicogen, Inc., 64 Dongburo 1259, Jinsung, Jinju, 660-852, Republic of Korea
- Department of Chemistry and Research Institute of Life Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Yun-Hi Kim
- Department of Chemistry and Research Institute of Life Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Kebede Taye Desta
- Department of Chemistry and Research Institute of Life Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Zhe Piao
- Amicogen, Inc., 64 Dongburo 1259, Jinsung, Jinju, 660-852, Republic of Korea
| | - Su-Lim Choi
- Amicogen, Inc., 64 Dongburo 1259, Jinsung, Jinju, 660-852, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nano Science, Global Top5 Program, Ewha Womans University, Seoul, 120-750, Republic of Korea
| | - Kyung-Yun Kang
- Department of Pharmacy, Sunchon National University, Suncheon, 540-742, Republic of Korea
| | - A M Abd El-Aty
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Konkuk University, 1 Hwayang-dong, Kwangjin-gu, Seoul, 143-701, Republic of Korea
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Yong Chul Shin
- Amicogen, Inc., 64 Dongburo 1259, Jinsung, Jinju, 660-852, Republic of Korea.
| | - Sung Chul Shin
- Department of Chemistry and Research Institute of Life Science, Gyeongsang National University, Jinju, 660-701, Republic of Korea.
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Minasian T, Claus C, Hariri OR, Piao Z, Quadri SA, Yuhan R, Leong D, Tashjian V. Chondromyxoid fibroma of the sacrum: A case report and literature review. Surg Neurol Int 2016; 7:S370-4. [PMID: 27274412 PMCID: PMC4879845 DOI: 10.4103/2152-7806.182547] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 01/16/2016] [Accepted: 02/25/2016] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Chondromyxoid fibroma (CMF) is an extremely rare, benign cartilaginous tumor that makes up <0.5% of all bone tumors, typically presenting in the second or third decade of life. CMF of the sacrum is exceedingly rare, with only seven documented cases reported in the neurosurgical literature. CASE DESCRIPTION We report a case of a 35-year-old female with a 3 month history of lower back pain after sustaining a fall on her sacrum/coccyx presenting with a progressive complaint of localized lower back pain, occasional urinary retention without incontinence, gluteal hypesthesia, and pressure below the gluteal crease. Imaging demonstrated a large, expansile enhancing soft-tissue lesion involving the sacrum, distal to the S2-3 disc space. The tumor was removed with partial sacrectomy for open en bloc resection with partial nerve sparing. The patient was found at 1.5-year follow-up with the improvement of symptoms, no recurrence, and no residual neurologic dysfunction. CONCLUSION Sacral CMF is a rare clinical entity that may mirror more aggressive sacral pathology, including chordoma, in both clinical presentation and imaging characteristics. A review of the available literature regarding diagnosis, surgical management options, and prognosis for sacral CMF is provided.
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Affiliation(s)
- Tanya Minasian
- Department of Neurosurgery, Arrowhead Regional Medical Center, Colton, CA, USA; Department of Surgery, Division of Neurosurgery, College of Osteopathic Medicine, Western University of Health Sciences, Pomona, CA, USA; Department of Neurosurgery, Kaiser Permanente Fontana Medical Center, Fontana, CA, USA
| | - Chad Claus
- Department of Surgery, Division of Neurosurgery, College of Osteopathic Medicine, Western University of Health Sciences, Pomona, CA, USA
| | - Omid R Hariri
- Department of Neurosurgery, Arrowhead Regional Medical Center, Colton, CA, USA; Department of Surgery, Division of Neurosurgery, College of Osteopathic Medicine, Western University of Health Sciences, Pomona, CA, USA; Department of Neurosurgery, Kaiser Permanente Fontana Medical Center, Fontana, CA, USA
| | - Zhe Piao
- Department of Pathology, Kaiser Permanente Fontana Medical Center, Fontana, CA, USA
| | - Syed A Quadri
- Department of Neurosurgery, Arrowhead Regional Medical Center, Colton, CA, USA
| | - Robert Yuhan
- Department of General Surgery, Kaiser Permanente Fontana Medical Center, Fontana, CA, USA
| | - Darren Leong
- Department of Plastic Surgery, Kaiser Permanente Fontana Medical Center, Fontana, CA, USA
| | - Vartan Tashjian
- Department of Neurosurgery, Arrowhead Regional Medical Center, Colton, CA, USA; Department of Neurosurgery, Kaiser Permanente Fontana Medical Center, Fontana, CA, USA
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Abstract
Although observational studies have identified the protective effect of statins on bone health, the effects remain controversial in randomized controlled trials (RCTs). We conducted a meta-analysis of RCTs to evaluate the effects of statins on bone mineral density (BMD) and fracture risk among adults.We searched electronic databases of Medline, Embase, and the Cochrane Central Register of Controlled Trials (CENTRAL) and conducted a bibliography review to identify articles published until May, 2015.Studies included in this meta-analysis should be randomized controlled trials conducted in adults, using statins in the intervention group. Information on changes in BMD or odds ratio, relative risk or hazard ratio (HR) for fracture risk with the corresponding 95% confidence interval (CI) was provided.Two investigators independently reviewed the title or abstract, further reviewed the full-texts and extracted information on study characteristics and study outcomes. Net change estimates of BMD and pooled HR of fracture risk comparing the intervention group with the control group were estimated across trials using random-effects models.Of the relevant 334 citations, 7 trials (including 27,900 randomized participants in total) meeting the eligibility criteria were included. Of the 7 trials, 5 were conducted to assess the association of statins use with BMD change and 2 with fracture risk. Compared with the control group, statins use was associated with significant increase in BMD of 0.03 g/cm (95% CI: 0.006, 0.053; I = 99.2%; P < 0.001), but null association with fracture risk, with the pooled HR of 1.00 (95% CI: 0.87, 1.15; I = 0; P = 0.396). Sensitivity analyses revealed that the associations were consistent and robust.The effect of statins use on bone health among subpopulation could not be identified due to limited number of trials.These findings provide evidence that statins could be used to increase BMD other than decreasing fracture risk in participant with dyslipidemia. In addition, further trials with the primary outcome of bone health-related measurements in subpopulation are warranted to ensure the effect of statins use.
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Affiliation(s)
- Zongze Wang
- From the Department of Orthopedics, Tianjin Nankai Hospital (ZW, FZ, ZP, JH); and Renal Department of Internal Medicine, The Second Hospital of Tianjin Medical University (YL), Tianjin, China
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Hao J, Piao Z, Yao J, Hao Z. Glycosaminoglycan-Assisted Self-Assembly of Nanostructured Conducting Poly(3,4-ethylenedioxy thiophene) having Enhanced Osteogenic Bioactivity. Chempluschem 2015; 80:1513-1516. [PMID: 31973384 DOI: 10.1002/cplu.201500147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Jian Hao
- Department of Orthopedics; Tianjin Nankai Hospital; Tianjin 300100 P. R. China
| | - Zhe Piao
- Department of Orthopedics; Tianjin Nankai Hospital; Tianjin 300100 P. R. China
| | - Jin Yao
- Department of Orthopedics; Tianjin Nankai Hospital; Tianjin 300100 P. R. China
| | - Zhao Hao
- Department of Orthopedics; The 425th Hospital of PLA; Sanya 572000 P. R. China
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27
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Liu J, Zhang SQ, Wu MF, Piao Z, Yao J, Li JH, Wang XG. Edaravone combined with Schwann cell transplantation may repair spinal cord injury in rats. Neural Regen Res 2015; 10:230-6. [PMID: 25883621 PMCID: PMC4392670 DOI: 10.4103/1673-5374.152376] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2014] [Indexed: 11/04/2022] Open
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28
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Zhang E, Cai Y, Luo Y, Piao Z. Riboflavin-shuttled extracellular electron transfer from Enterococcus faecalis to electrodes in microbial fuel cells. Can J Microbiol 2014; 60:753-9. [PMID: 25345758 DOI: 10.1139/cjm-2014-0389] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Great attention has been focused on Gram-negative bacteria in the application of microbial fuel cells. In this study, the Gram-positive bacterium Enterococcus faecalis was employed in microbial fuel cells. Bacterial biofilms formed by E. faecalis ZER6 were investigated with respect to electricity production through the riboflavin-shuttled extracellular electron transfer. Trace riboflavin was shown to be essential for transferring electrons derived from the oxidation of glucose outside the peptidoglycan layer in the cell wall of E. faecalis biofilms formed on the surface of electrodes, in the absence of other potential electron mediators (e.g., yeast extract).
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Affiliation(s)
- Enren Zhang
- a Department of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou City 225002, People's Republic of China
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29
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Lee SH, Kil TJ, Park KR, Kim BC, Kim JG, Piao Z, Corre P. Three-dimensional architectural and structural analysis--a transition in concept and design from Delaire's cephalometric analysis. Int J Oral Maxillofac Surg 2014; 43:1154-60. [PMID: 24794759 DOI: 10.1016/j.ijom.2014.03.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 02/10/2014] [Accepted: 03/27/2014] [Indexed: 11/19/2022]
Abstract
The aim of this study was to present a systematic sequence for three-dimensional (3D) measurement and cephalometry, provide the norm data for computed tomography-based 3D architectural and structural cephalometric analysis, and validate the 3D data through comparison with Delaire's two-dimensional (2D) lateral cephalometric data for the same Korean adults. 2D and 3D cephalometric analyses were performed for 27 healthy subjects and the measurements of both analyses were then individually and comparatively analyzed. Essential diagnostic tools for 3D cephalometry with modified definitions of the points, planes, and measurements were set up based on a review of the conceptual differences between two and three dimensions. Some 2D and 3D analysis results were similar, though significant differences were found with regard to craniofacial angle (C1-F1), incisal axis angles, cranial base length (C2), and cranial height (C3). The discrepancy in C2 and C3 appeared to be directly related to the magnification of 2D cephalometric images. Considering measurement discrepancies between 2D and 3D Delaire's analyses due to differences in concept and design, 3D architectural and structural analysis needs to be conducted based on norms and a sound 3D basis for the sake of its accurate application and widespread adoption.
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Affiliation(s)
- S-H Lee
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
| | - T-J Kil
- Department of Oral and Maxillofacial Surgery, Armed Forces Capital Hospital, ROK Army, Republic of Korea
| | - K-R Park
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - B C Kim
- Department of Oral and Maxillofacial Surgery, Daejeon Dental Hospital, College of Dentistry, Wonkwang University, Daejeon, Republic of Korea
| | - J-G Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Z Piao
- Department of Oral Maxillofacial Surgery, Stomatological Hospital of Guangzhou Medical College, Guangzhou, China
| | - P Corre
- Department of Maxillofacial Surgery and Stomatology, University Hospital, Nantes, France
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30
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Enatsu R, Matsumoto R, Piao Z, O'Connor T, Horning K, Burgess RC, Bulacio J, Bingaman W, Nair DR. Cortical negative motor network in comparison with sensorimotor network: A cortico-cortical evoked potential study. Cortex 2013; 49:2080-96. [DOI: 10.1016/j.cortex.2012.08.026] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 08/13/2012] [Accepted: 08/29/2012] [Indexed: 10/27/2022]
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31
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Enatsu R, Kubota Y, Kakisaka Y, Bulacio J, Piao Z, O’Connor T, Horning K, Mosher J, Burgess RC, Bingaman W, Nair DR. Reorganization of posterior language area in temporal lobe epilepsy: A cortico-cortical evoked potential study. Epilepsy Res 2013; 103:73-82. [DOI: 10.1016/j.eplepsyres.2012.07.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 06/15/2012] [Accepted: 07/03/2012] [Indexed: 11/25/2022]
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32
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Sarmiento JM, Wi MS, Piao Z, Boon-Unge K, Stiner ES. Two collision sellar lesions: Rathke's cleft cyst with non-functional pituitary adenoma and Rathke's cleft cyst with plurihormonal adenoma. ACTA ACUST UNITED AC 2013. [DOI: 10.7243/2049-7962-2-14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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33
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Kang YH, Kim BC, Park KR, Yon JY, Kim HJ, Tak HJ, Piao Z, Kim MK, Lee SH. Visual pathway-related horizontal reference plane for three-dimensional craniofacial analysis. Orthod Craniofac Res 2012; 15:245-54. [PMID: 23020695 DOI: 10.1111/j.1601-6343.2012.01551.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To construct three-dimensional (3D) horizontal reference planes based on visual pathway and to determine their stability and reliability by analyzing the structural patterns of normal and dysmorphology for 3D craniofacial analysis. SETTING AND SAMPLE POPULATION Thirty-six subjects with maxillofacial dysmorphology and malocclusion, and eight normal controls. MATERIALS AND METHODS POPULATION: On the 3D computed tomographic images of the subjects, the visual pathway-based planes, including the orbital axis plane (OAP), visual axis plane (VAP), and the optical axis plane (OpAP), were constructed and evaluated. RESULTS The OAP, but not the VAP and OpAP, showed the ideal relationship between the midsagittal and posterior maxillary plane, and properly described the different patterns of maxillofacial dysmorphology with craniofacial plane 1 of Delaire's analysis and the occlusal plane. CONCLUSIONS The proposed visual pathway-related horizontal reference planes, and in particular the OAP, seem to correctly express the visual axis and the position of the head in natural head position and can be used as a horizontal reference plane for the 3D analysis of craniofacial dysmorphology and anthropology.
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Affiliation(s)
- Y H Kang
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Korea
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34
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Enatsu R, Kubota Y, Kakisaka Y, Bulacio J, Piao Z, O'Connor T, Horning K, Mosher J, Burgess R, Bingaman WE, Nair D. 175 Language Reorganization in Temporal Lobe Epilepsy. Neurosurgery 2012. [DOI: 10.1227/01.neu.0000417766.48311.57] [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: 11/19/2022] Open
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35
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Sarmiento JM, Wi MS, Piao Z, Stiner ES. Solitary cerebral metastasis from transitional cell carcinoma after a 14-year remission of urinary bladder cancer treated with gemcitabine: Case report and literature review. Surg Neurol Int 2012; 3:82. [PMID: 22937482 PMCID: PMC3424676 DOI: 10.4103/2152-7806.99172] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [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: 01/09/2012] [Accepted: 02/17/2012] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Brain metastases are the most common adult brain tumors, frequently arising from primary tumors in the lung, breast, skin, kidneys, and colon. Transitional cell carcinoma (TCC), the most common type of urinary bladder cancer, is a rare cause of brain metastasis with an ominous prognosis. CASE DESCRIPTION A 68-year-old female presented with right-sided paresis and focal motor seizures of her right upper and lower extremities 14 years after being diagnosed and treated for primary TCC of the urinary bladder with gemcitabine-based chemotherapy. MRI imaging revealed a 3.1 × 3.1 × 2.7 cm heterogeneously enhancing mass located along the posterior aspect of the left frontal convexity. The lesion was accessed using a transsulcal approach and was surgically debulked along the motor cortex with motor strip mapping, followed by adjuvant whole-brain radiation therapy. Pathological examination confirmed metastatic carcinoma with features of TCC, a rare entity among metastatic brain tumors. CONCLUSION Brain metastases may present several years later in patients with TCC of the urinary bladder who have been treated with surgery and chemotherapy. Chemotherapeutic agents that penetrate the blood-brain barrier, such as gemcitabine, may delay development of cerebral metastasis from primary TCC of the urinary bladder.
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Affiliation(s)
| | - Matt S. Wi
- Department of Biochemistry and Molecular Biology, University of California, Riverside, USA
| | - Zhe Piao
- Department of Pathology, Kaiser Fontana Medical Center, Fontana, CA, USA
| | - Eric S. Stiner
- Department of Neurosurgery, Kaiser Fontana Medical Center, Fontana, CA, USA
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36
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Jing JC, Piao Z, Wu FS. [A case of myasthenia gravis combined with acquired hemophilia A]. Zhonghua Xue Ye Xue Za Zhi 2012; 33:443. [PMID: 22967376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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37
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Kang YJ, Cheng J, Mei LJ, Hu J, Piao Z, Yin SX. Multiple copies of 16S rRNA gene affect the restriction patterns and DGGE profile revealed by analysis of genome database. Microbiology (Reading) 2010. [DOI: 10.1134/s0026261710050103] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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38
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Kang YJ, Cheng J, Mei LJ, Hu J, Piao Z, Yin SX. Multiple copies of 16s rRNA gene affect the restriction patterns and DGGE profile as revealed by analysis of genome database. Mikrobiologiia 2010; 79:664-671. [PMID: 21090508] [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: 05/30/2023]
Abstract
The use of 16S rRNA gene has been a "golden" method to determine the diversity of microbial communities in environmental samples, phylogenetic relationships of prokaryotes and taxonomic position of newly isolated organisms. However due to the presence of multiple heterogeneous 16S rRNA gene copies in many strains, the interpretation of microbial ecology via 16S rRNA sequences is complicated. Purpose of present paper is to demonstrate the extent to which the multiple heterogeneous 16S rRNA gene copies affect RFLP patterns and DGG E profiles by using the genome database. In present genome database, there are 782 bacterial strains in total whose genomes have been completely sequenced and annotated. Among the total strains, 639 strains (82%) possess multiple 16S rRNA gene copies, 415 strains (53%) whose multiple copies are heterogeneous in sequences as revealed by alignment, 236 strains (30%) whose multiple copies show different restrict patterns by CSP61 + Hinfl, MspI + Rsal or HhaI as analyzed in silico. Polymorphisms of the multiple copies in certain strains were further characterized by G + C% and phylogentic distances based on the sequences of V3 region, which are linked to DGGE patters. Polymorphisms of a few strains were shown as examples. Using artificial communities, it is demonstrated that the presence of multiple heterogeneous 16S rRNA gene copies potentially leads to over-estimation of the diversity of a community. It is suggested that care must be taken when interpreting 16S rRNA-based RFLP and DGGE data and profiling an environmental community.
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Affiliation(s)
- Y J Kang
- Agricultural College, Yangzhou University, Yangzhou, China
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39
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Kang YJ, Cheng J, Mei LJ, Hu J, Piao Z, Yin SX. [Action mechanisms of plant growth-promoting rhizobacteria (PGPR): a review]. Ying Yong Sheng Tai Xue Bao 2010; 21:232-238. [PMID: 20387449] [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: 05/29/2023]
Abstract
Plants during their growth may suffer from many biotic and abiotic stresses, resulting in a decrease of biological production. They may also establish some mechanisms to resist or tolerate the stresses under the stimulation or induction by a variety of factors, among which, plant growth-promoting rhizobacteria (PGPR) is an important one. In this paper, the recently published papers related to this subject were reviewed, and two categories of the action mechanisms of PGPR, namely, induced systemic resistance (ISR) and induced systemic tolerance (IST), were elaborated. The diversity of the action mechanisms of PGPR implied that PGPR could be applied in more agro-ecosystems.
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Affiliation(s)
- Yi-Jun Kang
- College of Agronomy, Yangzhou University, Yangzhou 225009, Jiangsu, China.
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40
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Diehl B, Piao Z, Tkach J, Busch RM, LaPresto E, Najm I, Bingaman B, Duncan J, Lüders H. Cortical stimulation for language mapping in focal epilepsy: correlations with tractography of the arcuate fasciculus. Epilepsia 2009; 51:639-46. [PMID: 20002151 DOI: 10.1111/j.1528-1167.2009.02421.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
PURPOSE Diffusion tensor imaging (DTI) provides information about magnitude (diffusivity) and directionality (fractional anisotropy, FA) of water diffusion and allows visualization of major white matter tracts. The arcuate fasciculus (AF) connects anterior (Broca's) and posterior (Wernicke's) language areas. We hypothesized that essential language areas identified by direct cortical stimulation would colocalize with areas revealing subcortical connectivity via the AF. METHODS Fourteen patients with pharmacoresistant left hemispheric epilepsy and left hemisphere language dominance underwent invasive evaluations for localization of epileptogenicity and functional mapping. DTI and T1-weighted volumetric magnetic resonance imaging (MRI) scans were coregistered, and subdural grid electrodes identified on postimplantation computed tomography (CT) scans were also coregistered to the MRI scans. The AF was reconstructed from a region lateral to the corona radiata on the FA map. Colocalization, defined as <1 cm between the AF and the electrode positions delineating language cortex, was visually assessed with excellent reliability (Cronbach's alpha = 0.98). RESULTS A total of 71 subdural grid contacts were overlying language cortex. Nineteen contacts in eight patients were over Broca's area, 16 of which (84.2%) colocalized with the AF. Fifty-two contacts in 10 patients were over Wernicke's area, with colocalization in 29 patients (55.8%). Colocalization was significantly greater in anterior regions than in posterior regions [chi(2)(1) = 4.850, p < 0.05]. DISCUSSION The AF, as visualized with DTI, colocalized well with anterior language areas, but less so with posterior language areas, inferring that the latter are more spatially dispersed.
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Affiliation(s)
- Beate Diehl
- Department of Clinical Neurophysiology, The National Hospital for Neurology and Neurosurgery, London, United Kingdom.
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41
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Mani J, Diehl B, Piao Z, Schuele SS, LaPresto E, Liu P, Nair DR, Dinner DS, Luders HO. Evidence for a basal temporal visual language center: Cortical stimulation producing pure alexia. Neurology 2008; 71:1621-7. [DOI: 10.1212/01.wnl.0000334755.32850.f0] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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42
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Piao GH, Piao WH, He Y, Zhang HH, Wang GQ, Piao Z. Hyper-methylation of RIZ1 tumor suppressor gene is involved in the early tumorigenesis of hepatocellular carcinoma. Histol Histopathol 2008; 23:1171-5. [PMID: 18712668 DOI: 10.14670/hh-23.1171] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The retinoblastoma protein-interacting zinc finger gene RIZ1 is a putative tumor suppressor gene, and the inactivation of the RIZ1 is frequently found in tumors through a loss of mRNA expression. In order to understand the role of RIZ1 inactivation in the tumorigenesis of hepatocellular carcinoma (HCC), we detected the RIZ1 promoter methylation status in 39 HCCs using a methylation specific PCR (MSP) method, and carried out LOH study with marker P704. We also assessed the associations between the methylation status and clinicopathological parameters, tumor size, tumor differentiation, and fractional allelic loss (FAL). The results showed that the RIZ1 promoter methylated both in advanced tumors (>3 cm), (18/31, 58.0%) and in early tumors (<3 cm), (4/8, 50.0%). There were 54.6% (12/22) tumors with hyper-methylation in the low FAL group and 45.5% (10/22) in the high FAL group. Moreover, the DNA methylation of the RIZ1 promoter was found not only in the poorly differentiated tumors (12/22, 54.6%), but also in the well differentiated tumors (10/22, 45.5%). Among the 22 HCCs (22/39, 56.4%) that showed hyper-methylation at the RIZ1 promoter region, 3 cases showed biallelic methylation. Interestingly, one case showed hyper-methylation on one allele and a loss of heterozygosity (LOH) on the other allele. In other words, 4 HCCs showed the biallelic inactivation of the RIZ1. These results suggest that the inactivation of the RIZ1 by DNA methylation at its promoter region is involved in the tumorigenesis of HCC, particularly in the early stage of disease.
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Affiliation(s)
- G H Piao
- Department of Clinical Pathology, Yanbian Social Mental Hospital, Yanji City, China
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Diehl B, Busch RM, Duncan JS, Piao Z, Tkach J, Lüders HO. Abnormalities in diffusion tensor imaging of the uncinate fasciculus relate to reduced memory in temporal lobe epilepsy. Epilepsia 2008; 49:1409-18. [DOI: 10.1111/j.1528-1167.2008.01596.x] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Kim H, Piao Z, Liu P, Bingaman W, Diehl B. Secondary white matter degeneration of the corpus callosum in patients with intractable temporal lobe epilepsy: a diffusion tensor imaging study. Epilepsy Res 2008; 81:136-42. [PMID: 18572387 DOI: 10.1016/j.eplepsyres.2008.05.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2008] [Revised: 04/30/2008] [Accepted: 05/11/2008] [Indexed: 10/21/2022]
Abstract
Imaging changes in patients with focal epilepsy are not only seen in areas where seizures arise but often also in remote locations. The mechanism for such changes is unknown. We aimed to investigate whether patients with temporal lobe epilepsy (TLE) have microstructural changes involving the posterior portion of the corpus callosum (CC), where it links the temporal lobes, using presurgical diffusion tensor imaging (DTI) sequences. Ten patients with medically intractable TLE (two mesial TLE, eight neocortical TLE) who had seizure-free surgical outcomes were compared with 10 healthy controls. The regions of interest were outlined at each Witelson region (WR). Fractional anisotropy (FA), apparent diffusion coefficient (ADC) and three principal diffusivity values (lambda1, lambda2, lambda3) were determined in each WR. We performed tractography originating at each WR. In the TLE patients, the FA values were lower at the splenium of the corpus callosum (WR 7) compared to controls (p<0.05). Analysis of Eigen values in that location revealed that lambda1 values were decreased while lambda2 and lambda3 values were increased (p<0.05). Tractography revealed the connection between both temporal lobes via WR 7. In conclusion, decreased FA values with decreased lambda1 and increased lambda2 and lambda3 at the splenium of CC suggest that the pathologic changes, Wallerian degeneration, extend to the corpus callosum in TLE patients. Seizure-induced damage may cause secondary white matter degeneration along the tapetum and through the splenium of the corpus callosum, a potential pathway of spread in temporal lobe seizures.
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Affiliation(s)
- Hyunmi Kim
- Department of Neurology, Cleveland Clinic, Cleveland, OH, USA
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Piao Z, Yang L, Zhao L, Yin S. Actinobacterial community structure in soils receiving long-term organic and inorganic amendments. Appl Environ Microbiol 2008; 74:526-30. [PMID: 17933943 PMCID: PMC2223251 DOI: 10.1128/aem.00843-07] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2007] [Accepted: 10/01/2007] [Indexed: 11/20/2022] Open
Abstract
The impact of long-term organic and inorganic amendments on the actinobacterial community in soils was studied. Denaturing gradient gel electrophoresis patterns based on the V3 region of 16S rRNA suggested that there was no significant difference between the communities occurring in the different amendments. However, analysis of the clone libraries of the actinobacterial communities by the use of multiple statistical approaches showed that these communities were significantly different from each other. Results showed that long-term organic and inorganic soil amendments did not significantly alter the overall phylogenetic diversity of the actinobacterial communities but did significantly change the community structure.
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Affiliation(s)
- Zhe Piao
- Institute of Soil Science, Chinese Academy of Sciences, 71 Beijing East Road, Nanjing 210008, China
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Peterson MR, Piao Z, Bazhenova LA, Weidner N, Yi ES. Terminal respiratory unit type lung adenocarcinoma is associated with distinctive EGFR immunoreactivity and EGFR mutations. Appl Immunohistochem Mol Morphol 2007; 15:242-7. [PMID: 17721266 DOI: 10.1097/pai.0b013e31802d1590] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Approximately 10% to 20% of nonsmall cell lung cancer patients respond to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors, such as gefitinib. Responders are mostly nonsmokers and women with tumors displaying bronchioloalveolar features. Mutations of the tyrosine kinase domain of the EGFR gene have been associated with a clinical response to gefitinib. A recent study reported that the terminal respiratory unit (TRU)-type adenocarcinoma shares the clinical profile and EGFR mutations of gefitinib responders. EGFR immunoreactivity in this context has not been reported in the literature. We performed a detailed immunohistochemical analysis of EGFR expression on 124 consecutive lung resection specimens for malignancy, to survey the EGFR immunoreactivity in lung cancers in general and to correlate EGFR immunoreactivity with EGFR mutations and TRU-type histology. EGFR positivity was seen most frequently in squamous cell carcinomas (77%), followed by TRU-type adenocarcinomas (63%), large cell carcinomas (23%), and non-TRU-type adenocarcinomas (12%). A distinctive basally oriented cytoplasmic positivity was observed exclusively in TRU-type adenocarcinomas. EGFR mutation was identified in 6 of 54 cases studied and all 6 cases were TRU-type adenocarcinomas. Five of six cases with EGFR mutation were positive for EGFR immunostain with the basal cytoplasmic localization. In conclusion, EGFR immunoreactivity with basal cytoplasmic pattern was exclusively seen in TRU-type adenocarcinoma and a subset of these cases was seen with EGFR mutations in the responders to EGFR inhibitor therapy.
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Affiliation(s)
- Michael R Peterson
- Department of Pathology, University of California San Diego, School of Medicine, La Jolla, CA, USA
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Wang WD, Wang XF, Piao Z, Liu CL, Gao XZ, Cui ZJ. [Microbial dynamics during the composting process]. Huan Jing Ke Xue 2007; 28:2591-2597. [PMID: 18290488] [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: 05/25/2023]
Abstract
Microbial dynamics of microbial community during the composting process was investigated with the methods of denaturing gradient gel electrophoresis (DGGE) and plating. The results showed that the most of microorganism count was bacterium, the second was actinomycete and the least was fungi. At the same time, the count of the thermophilic microorganism was always less than that of the mesophilic during the composting process. The count of mesophilic microorganism at later stage was less than that at the initial stage. However, the count of thermophilic antinomycete and fungi at later stage were more than that at initial stage, and the count of thermophilic bacterium was stable throughout the composting process. The bands pattern of DGGE and 16S rDNA analyses indicated that bacterial succession was presented during the composting process. The genera of Bdellovibrio, Clostridia bacterium and Bacillus were dominant species at initial stage (before the first 15 days), and Beta proteobacterium, Petrobacter succinimandens, Nitrospirae bacterium and Paenibacillus were dominant species at middle and later stage. Moreover, Clostridium was found throughout the process.
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Affiliation(s)
- Wei-Dong Wang
- College of Biological Science and Technology, Heilongjang August First Land Reclamation University, Daqing 163319, China.
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Abstract
BACKGROUND The healing potential of articular cartilage in response to injury is poor, because articular cartilage lacks blood vessels or perichondrium. Costal cartilage is covered with a vascularized perichondrium, which is known to have chondrogenic potential. The purpose of this study was to determine whether costal cartilage can heal in response to mechanical injury. METHODS Sixty-five ICR mice were used. Under anesthesia, the left tenth costal cartilage was dissected using microscissors. At 1 day and at 1, 2, 3, and 12 weeks after injury, the mice were killed and paraffin sections were prepared. Safranin O staining, in situ hybridization of type II collagen, and immunostaining for CD44 were performed. Localization of cell proliferation was performed using immunohistochemistry with bromodeoxyuridine monoclonal antibody. In situ detection of apoptosis (deoxynucleotidyl transferase-mediated dUTP nick end labeling) was performed using an Apop Tag Kit. RESULTS From 1 to 2 weeks after costal cartilage injury, bromodeoxyuridine-positive cells were observed in the perichondrium. Two weeks after injury, the dissected cartilage fragments had combined with newly formed safranin O-positive tissue. Type II collagen mRNA was strongly expressed in the cells of the newly formed tissue. Apoptosis was detected in newly formed cartilaginous tissue at 1 and 2 weeks after injury. The cartilage fragments failed to unite at 12 weeks after injury. CD44 immunoreactivity was detected on the surface of the cavity between the cartilage fragments. CONCLUSION Although the dissected fragments of costal cartilage can combine with newly formed cartilaginous tissue temporarily, they fail to unite ultimately.
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Affiliation(s)
- Zhe Piao
- Department of Orthopedic Surgery, Yamagata University School of Medicine, Iida-Nish 2-2-2, Yamagata 990-9585, Japan
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Peterson MR, Piao Z, Weidner N, Yi ES. Strong PDGFRA positivity is seen in GISTs but not in other intra-abdominal mesenchymal tumors: Immunohistochemical and mutational analyses. Appl Immunohistochem Mol Morphol 2007; 14:390-6. [PMID: 17122634 DOI: 10.1097/01.pai.0000203038.33414.a3] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Mutation of the platelet-derived growth factor receptor-alpha (PDGFRA) gene has been well documented as an alternative oncogenic mechanism in a subset of gastrointestinal stromal tumors (GISTs) lacking c-kit mutations. However, the role of PDGFRA immunohistochemistry in the diagnosis of GISTs has not been well studied. We investigated PDGFRA immunoreactivity in GISTs and in other intra-abdominal mesenchymal tumors, and correlated PDGFRA expression with CD117 positivity and with the mutational status of PDGFRA and c-kit genes. In addition, expression of phosphorylated AKT, an activated downstream molecule in the PDGFRA and c-kit signaling pathways, was correlated with PDGFRA and CD117 status. A total of 39 GISTs and 20 other mesenchymal tumors in the abdomen were included in this study. Thirty-five of 39 GIST cases (89.7%) were positive for PDGFRA and 19 of these 35 positive cases were strongly positive. Five of 20 non-GIST lesions (25%) were positive for PDGFRA, but none of these cases were strongly positive. With one exception, PDGFRA-positive cases were also positive for CD117. Phosphorylated AKT positivity was not associated with the immunoreactivity or mutation of PDGFRA and c-kit, suggesting that the activation of AKT is probably independent of the activation of PDGFRA and c-kit in GISTs. Of 14 GISTs assayed, 4 had mutations in c-kit at exons 11 or 17, and 4 had mutations in PDGFRA at exons 12 or 18. Three of 4 GIST cases with PDGFRA mutations show epithelioid morphology and strong PDGFRA immunoreactivity with prominent perinuclear dotlike accentuation (so-called Golgi pattern). In conclusion, strong PDGFRA positivity with Golgi pattern is a useful adjunct in the diagnosis of GISTs with PDGFRA mutation.
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Affiliation(s)
- Michael R Peterson
- Department of Pathology, University of California San Diego, San Diego, CA 92103-8720, USA
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Krajewska M, Kim H, Kim C, Kang H, Welsh K, Matsuzawa SI, Tsukamoto M, Thomas RG, Assa-Munt N, Piao Z, Suzuki K, Perucho M, Krajewski S, Reed JC. Analysis of apoptosis protein expression in early-stage colorectal cancer suggests opportunities for new prognostic biomarkers. Clin Cancer Res 2006; 11:5451-61. [PMID: 16061861 DOI: 10.1158/1078-0432.ccr-05-0094] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE Although most stage II colon cancers are potentially curable by surgery alone, approximately 20% of patients relapse, suggesting a need for establishing prognostic markers that can identify patients who may benefit from adjuvant chemotherapy. We tested the hypothesis that differences in expression of apoptosis-regulating proteins account for differences in clinical outcome among patients with early-stage colorectal cancer. EXPERIMENTAL DESIGN Tissue microarray technology was employed to assay the expression of apoptosis-regulating proteins by immunohistochemistry in 106 archival stage II colorectal cancers, making correlations with disease-specific survival. The influence of microsatellite instability (MSI), tumor location (left versus right side), patient age, and gender was also examined. RESULTS Elevated expression of several apoptosis regulators significantly correlated with either shorter (cIAP2; TUCAN) or longer (Apaf1; Bcl-2) overall survival in univariate and multivariate analyses. These biomarkers retained prognostic significance when adjusting for MSI, tumor location, patient age, and gender. Moreover, certain combinations of apoptosis biomarkers were highly predictive of death risk from cancer. For example, 97% of patients with favorable tumor phenotype of cIAP2(low) plus TUCAN(low) were alive at 5 years compared with 60% of other patients (P = 0.00003). In contrast, only 37% of patients with adverse biomarkers (Apaf1(low) plus TUCAN(high)) survived compared with 83% of others at 5 years after diagnosis (P< 0.0001). CONCLUSIONS Immunohistochemical assays directed at detection of certain combinations of apoptosis proteins may provide prognostic information for patients with early-stage colorectal cancer, and therefore could help to identify patients who might benefit from adjuvant chemotherapy or who should be spared it.
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Affiliation(s)
- Maryla Krajewska
- The Burnham Institute, Department of Family Preventive Medicine, University of California-San Diego, La Jolla, California, USA
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