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Liu H, Zhou X, Nail A, Yu H, Yu Z, Sun Y, Wang K, Bao N, Meng D, Zhu L, Li H. Multi-material 3D printed eutectogel microneedle patches integrated with fast customization and tunable drug delivery. J Control Release 2024; 368:115-130. [PMID: 38367865 DOI: 10.1016/j.jconrel.2024.02.023] [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: 12/11/2023] [Revised: 01/21/2024] [Accepted: 02/14/2024] [Indexed: 02/19/2024]
Abstract
Microneedle patches are emerging multifunctional platforms for transdermal diagnostics and drug delivery. However, it still remains challenging to develop smart microneedles integrated with customization, sensing, detection and drug delivery by 3D printing strategy. Here, we present an innovative but facile strategy to rationally design and fabricate multifunctional eutectogel microneedle (EMN) patches via multi-material 3D printing. Polymerizable deep eutectic solvents (PDES) were selected as printing inks for rapid one-step fabrication of 3D printing functional EMN patches due to fast photopolymerization rate and ultrahigh drug solubility. Moreover, stretchable EMN patches incorporating rigid needles and flexible backing layers were easily realized by changing PDES compositions of multi-material 3D printing. Meanwhile, we developed multifunctional smart multi-material EMN patches capable of performing wireless monitoring of body movements, painless colorimetric glucose detection, and controlled transdermal drug delivery. Thus, such multi-material EMN system could provide an effective platform for the painless diagnosis, detection, and therapy of a variety of diseases.
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Affiliation(s)
- Huan Liu
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Xinmeng Zhou
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Aminov Nail
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Hao Yu
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zilian Yu
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yue Sun
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Kun Wang
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Nanbin Bao
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Decheng Meng
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Liran Zhu
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Huanjun Li
- Key Laboratory of Cluster Science of Ministry of Education, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China.
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Meng D, Zhang X, Yu W, Yin G, Chen S, Liu H, Wang L, Zhang F. Association between gastroesophageal reflux disease and stroke: a bidirectional Mendelian randomization study. Front Neurol 2024; 14:1295051. [PMID: 38322794 PMCID: PMC10844487 DOI: 10.3389/fneur.2023.1295051] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/21/2023] [Indexed: 02/08/2024] Open
Abstract
Objective Some previous studies have suggested a potential link between stroke and gastroesophageal reflux disease (GERD). We used a two-sample bidirectional Mendelian randomization (MR) method to explore the causal relationship between stroke and GERD. Design Summary-level data derived from the published genome-wide association studies (GWAS) were employed for analyses. Single-nucleotide polymorphisms (SNPs) as instrumental variables (IVs) for stroke (n = 446,696) and its common subtypes ischemic stroke (IS) (n = 440,328), large vessel stroke (LVS) (n = 410,484), small vessel stroke (SVS) (n = 198,048), and cardioembolic stroke (CES) (n = 413,304) were obtained from the MEGASTROKE consortium. The data on intracerebral hemorrhage (ICH) (n = 721,135) come from the UK Biobank. Instrumental variables (IVs) for lacunar stroke (LS) (n = 474,348) and GERD (n = 602,604) were screened from publicly available genetic summary data. The inverse variance weighted (IVW) method was used as the main MR method. Pleiotropy was detected by the MR-Egger intercept test, MR pleiotropy residual sum and outlier, and leave-one-out analysis. Cochran Q statistics were used as supplements to detect pleiotropy. Results We found that GERD can causally increase the risk of stroke [IVW odds ratio (OR): 1.22, 95% confidence interval (CI): 1.13-1.32, p = 1.16 × 10-6] and its common subtypes IS (OR: 1.19, 95% CI: 1.10-1.30, p = 3.22 × 10-5), LVS (OR: 1.49, 95% CI: 1.21-1.84, p = 1.47 × 10-4), and LS (OR: 1.20, 95% CI: 1.001-1.44, p = 0.048). Several important risk factors for stroke have also been implicated in the above causal relationship, including type 2 diabetes, sleep apnea syndrome, high body mass index, high waist-to-hip ratio, and elevated serum triglyceride levels. In reverse MR analysis, we found that overall stroke (OR: 1.09, 95% CI: 1.004-1.19, p = 0.039) and IS (OR: 1.10, 95% CI: 1.03-1.17, p = 0.007) have the causal potential to enhance GERD risk. Conclusion This MR study provides evidence supporting a causal relationship between GERD and stroke and some of its common subtypes. We need to further explore the interconnected mechanisms between these two common diseases to better prevent and treat them.
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Affiliation(s)
- Decheng Meng
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xin Zhang
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Wenfei Yu
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Guoliang Yin
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Suwen Chen
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Hongshuai Liu
- College of Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Linya Wang
- College of Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Fengxia Zhang
- Department of Neurology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
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Zhang X, Chen S, Yin G, Liang P, Feng Y, Yu W, Meng D, Liu H, Zhang F. The Role of JAK/STAT Signaling Pathway and Its Downstream Influencing Factors in the Treatment of Atherosclerosis. J Cardiovasc Pharmacol Ther 2024; 29:10742484241248046. [PMID: 38656132 DOI: 10.1177/10742484241248046] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Atherosclerosis is now widely considered to be a chronic inflammatory disease, with increasing evidence suggesting that lipid alone is not the main factor contributing to its development. Rather, atherosclerotic plaques contain a significant amount of inflammatory cells, characterized by the accumulation of monocytes and lymphocytes on the vessel wall. This suggests that inflammation may play a crucial role in the occurrence and progression of atherosclerosis. As research deepens, other pathological factors have also been found to influence the development of the disease. The Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway is a recently discovered target of inflammation that has gained attention in recent years. Numerous studies have provided evidence for the causal role of this pathway in atherosclerosis, and its downstream signaling factors play a significant role in this process. This brief review aims to explore the crucial role of the JAK/STAT pathway and its representative downstream signaling factors in the development of atherosclerosis. It provides a new theoretical basis for clinically affecting the development of atherosclerosis by interfering with the JAK/STAT signaling pathway.
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Affiliation(s)
- Xin Zhang
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Suwen Chen
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Guoliang Yin
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Pengpeng Liang
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Yanan Feng
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Wenfei Yu
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Decheng Meng
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Hongshuai Liu
- The First Clinical Medical College of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Fengxia Zhang
- Hospital of Shandong University of Traditional Chinese Medicine, Jinan City, Shandong Province, China
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Yu Z, Bao N, Liu H, Zhou X, Yu H, Sun Y, Meng D, Zhu L, Aminov N, Li H. Transparent, Mechanically Robust, Adhesive, Temperature-Tolerant, and 3D Printable Nanocomposite Ionogels for Flexible Sensors. ACS Appl Mater Interfaces 2023. [PMID: 37877581 DOI: 10.1021/acsami.3c13723] [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: 10/26/2023]
Abstract
Ionogels are emerging as soft materials for flexible strain sensors. However, the integration of multiple functionalities into a single ionogel for diverse applications in complex scenarios remains a challenge. In this study, we present a multifunctional nanocomposite ionogel that combines high strength, transparency, stretchability, temperature tolerance, adhesiveness, and 3D printing capabilities. The ionogels are fabricated through a one-step photopolymerization process involving acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid in an ionic liquid, with Al(OH)3 nanoparticles serving as cross-linkers. The resulting ionogels exhibit robust noncovalent interactions, including ionic coordination, hydrogen bonding, and ionic dipole interactions, providing exceptional mechanical strength, conductivity, and wide temperature tolerance while ensuring strong adhesion to various substrates. Wearable strain sensors based on these ionogels can accurately detect and differentiate a range of movements, from large body motions such as bending limbs to subtle distinctions such as writing different letters. Additionally, the pregel solution can serve as printing ink for the rapid and efficient mass production of 3D printed high-precision microcircuits. Impressively, the nanocomposite ionogels exhibit a high latent heat value of 240 J g-1 at a melting temperature of -65 °C, suggesting significant potential for cold energy storage in ultralow-temperature cold-chain transportation systems. Thus, these outstanding features of the ionogels offer a promising strategy for advancing wearable electronics and cold energy storage systems.
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Affiliation(s)
- Zilian Yu
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Nanbin Bao
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Huan Liu
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Xinmeng Zhou
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Hao Yu
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Yue Sun
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Decheng Meng
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Liran Zhu
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Nail Aminov
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Huanjun Li
- Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
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Wei M, He S, Meng D, Yang G, Wang Z. Erratum to: Hybrid Exercise Program Enhances Physical Fitness and Reverses Frailty in Older Adults: Insights and Predictions from Machine Learning. J Nutr Health Aging 2023; 27:903. [PMID: 38216223 DOI: 10.1007/s12603-023-2004-z] [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] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Affiliation(s)
- M Wei
- Chinese Center of Exercise Epidemiology, Northeast Normal University, Renmin Street, 130024, Jilin, Changchun, China
| | - S He
- Chinese Center of Exercise Epidemiology, Northeast Normal University, Renmin Street, 130024, Jilin, Changchun, China
| | - D Meng
- Chinese Center of Exercise Epidemiology, Northeast Normal University, Renmin Street, 130024, Jilin, Changchun, China
| | - Guang Yang
- Chinese Center of Exercise Epidemiology, Northeast Normal University, Renmin Street, 130024, Jilin, Changchun, China.
| | - Ziheng Wang
- Chinese Center of Exercise Epidemiology, Northeast Normal University, Renmin Street, 130024, Jilin, Changchun, China; AI Group, Intelligent Lancet LLC, 95816, Sacramento, CA, USA.
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Chen S, Sun S, Feng Y, Li X, Yin G, Liang P, Yu W, Meng D, Zhang X, Liu H, Zhang F. Diosgenin attenuates nonalcoholic hepatic steatosis through the hepatic FXR-SHP-SREBP1C/PPARα/CD36 pathway. Eur J Pharmacol 2023; 952:175808. [PMID: 37263401 DOI: 10.1016/j.ejphar.2023.175808] [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: 04/06/2023] [Revised: 05/16/2023] [Accepted: 05/24/2023] [Indexed: 06/03/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common liver disease worldwide and has no approved treatment. The hepatic farnesoid X receptor (FXR) is one of the most promising therapeutic targets for NAFLD. Diosgenin (DG), a natural compound extracted from Chinese herbal medicine, is very effective in preventing metabolic diseases. Our research aims to determine the effects and molecular mechanisms of DG on NAFLD in vivo and in vitro. The effect of DG on hepatic steatosis was evaluated in Sprague‒Dawley (SD) rats induced by a high-fat diet (HFD) and in HepG2 cells exposed to free fatty acids (FFAs, sodium oleate:sodium palmitate = 2:1). DG treatment efficiently managed hepatic lipid deposition in vivo and in vitro. Mechanistically, DG upregulated the expression of FXR and small heterodimer partner (SHP) and downregulated the expression of genes involved in hepatic de novo lipogenesis (DNL), including sterol regulatory element-binding protein 1C (SREBP1C), acetyl-CoA carboxylase 1 (ACC1), and fatty acid synthase (FASN). Moreover, DG promoted the expression of peroxisome proliferator-activated receptor alpha (PPARα), which is related to fatty acid oxidation. In addition, DG inhibited the expression of the CD36 molecule (CD36) related to fatty acid uptake. However, hepatic FXR silencing weakened the regulatory effects of DG on these genes. Collectively, our data show that DG has a good effect on alleviating nonalcoholic hepatic steatosis via the hepatic FXR-SHP-SREBP1C/PPARα/CD36 pathway. DG promises to be a novel candidate FXR activator that can be utilized to treat NAFLD.
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Affiliation(s)
- Suwen Chen
- Shandong University of Traditional Chinese Medicine, Jinan, 250013, China
| | - Shangwen Sun
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Yanan Feng
- Shandong University of Traditional Chinese Medicine, Jinan, 250013, China
| | - Xiu Li
- Department of Endocrinology, Affiliated Linshu County People's Hospital, Linyi, 276799, China
| | - Guoliang Yin
- Shandong University of Traditional Chinese Medicine, Jinan, 250013, China
| | - Pengpeng Liang
- Shandong University of Traditional Chinese Medicine, Jinan, 250013, China
| | - Wenfei Yu
- Shandong University of Traditional Chinese Medicine, Jinan, 250013, China
| | - Decheng Meng
- Shandong University of Traditional Chinese Medicine, Jinan, 250013, China
| | - Xin Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, 250013, China
| | - Hongshuai Liu
- Shandong University of Traditional Chinese Medicine, Jinan, 250013, China
| | - Fengxia Zhang
- Department of Neurology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250013, China.
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Wei M, He S, Meng D, Yang G, Wang Z. Hybrid Exercise Program Enhances Physical Fitness and Reverses Frailty in Older Adults: Insights and Predictions from Machine Learning. J Nutr Health Aging 2023; 27:894-902. [PMID: 37960913 DOI: 10.1007/s12603-023-1991-0] [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: 06/14/2023] [Accepted: 09/14/2023] [Indexed: 11/15/2023]
Abstract
PURPOSE The declining physical condition of the older adults is a pressing issue. Wu Qin Xi exercise, despite being low-intensity, is highly effective among older adults. Inspired by its characteristics, we designed a new exercise program for frail older adults, combining strength, endurance, and Wu Qin Xi. Furthermore, we employed machine learning to predict whether frailty can be reversed in older adults after the intervention. METHODS A total of 181 community-dwelling frail older adults aged 65 years or older participated in this single-center, randomized controlled study, with 54.7% (n=99) being female. The study assessed the effectiveness of several exercise modalities in reversing frailty. The Fried's frailty criterion was used to assess the degree of frailty of the subjects. Participants were assigned a three-digit code 001-163 and randomly assigned (1:1:1) by computer to three different groups based on the study participant number: the Wu Qin Xi group (WQX), the strength exercise mixed with endurance exercise training group (SE), and the WQXSE hybrid exercise group incorporated the above two. Body composition and frailty-related physical fitness factors were measured before and after a 24-week intervention. The measurements included Body height, Body mass, Timed Up and Go Test (TUGT), grip strength assessment (GS), 6min walk test (6 min WT), and 10 m maximum walk speed (10 m MWS). Data were analyzed using repeated measures ANOVA to determine group and time interaction effects and machine learning models were used to predict program effectiveness. RESULTS A total of 163 participants completed the study, with 53.9% (n=88) of them being female. The two items, 10 m maximum walking speed (10 m MWS) and grip strength, were significantly affected by the interaction of group and time. Compared to the other two groups, the WQXSE group showed the most improvement in the item 10 m MWS. In addition, following 24 weeks of training, 68 (41.7%) of the initially frail older adults had reversed their frailty status. Among them, 19 (36.5%) were in the WQX group, 24 (44.4%) were in the WQXSE group, and 25 (43.9%) were in the SE group. The stacking model exhibited superior performance when compared to other algorithms. CONCLUSION A hybrid exercise regimen comprising the Wu Qin Xi routine and exercises focused on both strength and endurance holds the potential to yield greater improvements in the physical fitness of older adults, as well as reducing frailty. Leveraging a stacking model, it is possible to forecast the likelihood of older adults successfully reversing their frailty status following participation in a prevention exercise program.
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Affiliation(s)
- M Wei
- Guang Yang, Ziheng Wang, Chinese Center of Exercise Epidemiology, Northeast Normal University, Renmin Street, Changchun, 130024, Jilin, China, ;
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Wang Z, Zheng Y, Meng D, Li H, Ji C, Wang J. Anatomical Imaging Study on Uneven Settlement of the Proximal Tibia. Orthop Surg 2022; 15:239-246. [PMID: 36519383 PMCID: PMC9837255 DOI: 10.1111/os.13632] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/31/2022] [Accepted: 11/12/2022] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE Uneven settlement of the proximal tibia significantly contributes to the onset and progression of medial compartment knee OA; however, the specific location and variations of proximal tibial deformity remain unclear. Therefore, this study aimed to explore the effects of the anatomic morphology of different tibial regions on proximal tibial vara and proximal tibial microstructural changes with age in both sexes to reveal the pattern of uneven settlement of the proximal tibia. METHODS In this retrospective study, we reviewed the radiographs of 414 patients (789 legs) between May and September 2021. The medial proximal tibial angle (MPTA) and four anatomic angles of the tibia (i.e., the tibial plateau-epiphyseal line [PT-EL] angle, epiphyseal line-tibial platform [EL-PF] angle, epiphyseal axis inclination angle [EAIA], and subepiphyseal axis inclination angle [SAIA]) were measured. The effect of each angle on MPTA and their changes with age in both sexes were investigated using Pearson's correlation coefficient and multiple linear regression. RESULTS In females, PT-EL angle, EL-PF angle, and SAIA negatively correlated with MPTA (r = -0.325, -0.246, and -0.502; p < 0.05), and EAIA positively correlated with MPTA (r = 0.099, p < 0.05). Regression analysis showed that the correlations between MPTA and PT-EL angle, EL-PF angle, and SAIA were significant (β = -1.003, -0.013, and -0.971; adjusted R2 = 0.979). Furthermore, MPTA negatively correlated with age (r = -0.202, p < 0.05); PT-EL angle and EAIA positively correlated with age (r = 0.237 and 0.142, p < 0.05). Regression analysis showed that only the correlation between PT-EL angle and age was significant (β = 5.635, p < 0.05). In males, PT-EL angle, EL-PF angle, and SAIA negatively correlated with MPTA (r = -0.270, -0.267, and -0.533; p < 0.05), and EAIA positively correlated with MPTA (r = 0.135, p < 0.05). Regression analysis showed that the correlations between MPTA and PT-EL angle, EL-PF angle, and SAIA were significant (β = -0.992, -0.017, and -0.958; adjusted R2 = 0.970). However, there was no significant correlation between age and any of the measured angles (p > 0.05). CONCLUSIONS Proximal tibial vara is affected by the anatomic morphology of the epiphyseal and subepiphyseal regions. In females, the uneven settlement of the epiphysis progresses with age and may be responsible for dynamic varus deformity of the proximal tibia.
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Affiliation(s)
- Zhijie Wang
- Hebei Medical University Third Affiliated HospitalShijiazhuangChina
| | - Yi Zheng
- Hebei Medical University Third Affiliated HospitalShijiazhuangChina
| | - Decheng Meng
- Hebei Medical University Third Affiliated HospitalShijiazhuangChina
| | - Handi Li
- Hebei Medical University Third Affiliated HospitalShijiazhuangChina
| | - Chenni Ji
- Hebei Medical University Third Affiliated HospitalShijiazhuangChina
| | - Juan Wang
- Hebei Medical University Third Affiliated HospitalShijiazhuangChina
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Meng D, Zhang R, Ji C, Gao S, Wang J. A low-dose therapy of fibrinogen supplement during perioperative period of total knee arthroplasty in an asymptomatic man with congenital dysfibrinogenemia: A case report. Medicine (Baltimore) 2022; 101:e31644. [PMID: 36401403 PMCID: PMC9678536 DOI: 10.1097/md.0000000000031644] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
RATIONALE Congenital dysfibrinogenemia (CD) is a rare coagulation system disease that is often treated without unified management. Individualized treatment thereof presents clinicians with great challenges. PATIENT CONCERNS A patient who was about to undergo total knee arthroplasty was found to have CD. DIAGNOSES Coagulation screening revealed low fibrinogen, prolonged thrombin time, minor prolonged prothrombin time, and normal activated partial thromboplastin time were detected during admission, but no abnormal personal and family history findings were observed. Therefore, CD and hypofibrinogenemia were suspected. The gene sequencing confirmed the diagnosis of CD. INTERVENTIONS The patient received plenty and low level of fibrinogen concentrate during 2 perioperative periods, respectively. OUTCOMES Successful clinical outcomes were obtained using different treatment strategies. LESSONS In contrast to prior case reports, this case illustrates the feasibility of low dosing of fibrinogen supplements within an asymptomatic patient in a selective operation. Changes in the level of fibrinogen and fibrin degradation product are of great importance for individualized treatment after supplementation.
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Affiliation(s)
- Decheng Meng
- Department of Joint Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Runzi Zhang
- Department of Joint Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Chenni Ji
- Department of Joint Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Shijun Gao
- Department of Joint Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Juan Wang
- Department of Joint Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- NHC Key Laboratory of Intelligent Orthopedic Equipment (The Third Hospital of Hebei Medical University), Shijiazhuang, Hebei, China
- *Correspondence: Juan Wang, Department of Joint Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China (e-mail: )
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Wu CH, Pei RX, Yan JX, Ding L, Lyu YJ, Song L, Wang J, Meng D, Liu H, Qi Z, Hao M, Wang JT. [The effect of red blood cell folate on the prognosis of high-risk human papillomavirus infection: a community-based cohort study]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:2174-2178. [PMID: 34954983 DOI: 10.3760/cma.j.cn112338-20210408-00291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the effect of red blood cell folate on the prognosis of high-risk human papillomavirus (HR-HPV) infection. Methods: A total of 564 participants with low-grade cervical intraepithelial neoplasias (CINⅠ) were selected from the community-based married women cohort established in 2014. The general baseline information and factors related to HPV infection were collected. Meanwhile, HPV genotyping and levels of folate were measured. The subjects were divided into different levels of exposure group according to the folate levels and followed up for 24 months to observe the changes of HR-HPV infection status. There were four changes, including persistent infection, infection turned negative, from negative to positive and constant negative by comparing HR-HPV infection status at baseline and follow-up to 24 months. Results: 483 participators completed 24 months of follow-up observation, with a follow-up rate of 85.64% (483/564). The rates of persistent infection, infection turned negative, from negative to positive, and the constant negative were 52.45% (75/143), 47.55% (68/143), 19.71% (67/340), 80.29% (273/340), respectively. Our results demonstrated that the risk of persistent infection (aRR=2.50, 95%CI: 1.55-4.02) and from negative to positive (aRR=4.55, 95%CI: 2.52-8.23) in the low level of folate were significantly higher than that in the high level of folate, especially the risk of homotype persistent infection (aRR=2.72, 95%CI: 1.51-4.90). The risk of persistent infection (trend χ2=20.62, P<0.001), from negative to positive (trend χ2=31.76, P<0.001), persistent homotypic infection (trend χ2=20.09, P<0.001) increased with the decrease of red blood cell folate level. On the contrary, no similar results were found in persistent heterotypic infection. Conclusions: A low level of red blood cell folate could increase the risk of HR-HPV persistent infection and from negative to positive. In women with HR-HPV infection, the risk of persistent homotypic infection is higher.
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Affiliation(s)
- C H Wu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - R X Pei
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J X Yan
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - D Meng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H Liu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z Qi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Pei RX, Wu CH, Yan JX, Ding L, Song L, Lyu YJ, Wang J, Liu H, Meng D, Qi Z, Hao M, Wang JT. [Effects of polycyclic aromatic hydrocarbons exposure on prognosis of high risk human papillomavirus infection: a prospective cohort study]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:2060-2065. [PMID: 34818855 DOI: 10.3760/cma.j.cn112338-20210406-00278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the effects of polycyclic aromatic hydrocarbons (PAHs) exposure on the prognosis of high risk human papillomavirus (HR-HPV) infection. Methods: In this prospective study, 564 patients with low-grade cervical intraepithelial neoplasia confirmed by pathology were selected from the natural cohort population established by our research group in Shanxi province in 2014. Based on the baseline data of demographic characteristics and factors related to HPV infection, the concentrations of 1-hydroxypyrene in urine samples of the patients were determined by high performance liquid chromatography to define the exposure level of PAHs. At baseline survey and follow-up after 24 months, flow-through hybridization was used to detect HPV infection types, and to evaluate the prognosis of HR-HPV (persistent infection, negative conversion, positive conversion and persistent negative status). Results: Of the 564 subjects, 483 completed the follow-up, with a follow-up rate of 85.6% (483/564). Among them, the persistent infection rate was 52.4% (75/143), the persistent homotype infection rate was 35.7% (51/143), the negative conversion rate was 47.6% (68/143), the positive conversion rate was 19.7% (67/340), and the persistent negative rate was 80.3% (273/340). The follow-up results showed that the persistent infection rate (aRR=3.22, 95%CI: 1.85-5.62) and positive conversion rate (aRR=2.84, 95%CI: 1.64-4.94) of HR-HPV in high PAHs exposure group were higher than those in low PAHs exposure group, while the persistent negative rate (aRR=0.55, 95% CI: 0.43-0.70) of HR-HPV in high PAHs exposure group were lower than those in low PAHs exposure group. Based on restrictive cubic spline analysis, the results showed that the effects of PAHs exposure on persistent HR-HPV infection and persistent homotype infection showed an ascending linear dose-response relationship, while on HR-HPV positive conversion and persistent negative status showed an ascending and declining nonlinear dose-response relationship respectively (P<0.01). Conclusions: High PAHs exposure could promote persistent HR-HPV infection and persistent homotypic infection. Reducing PAHs exposure might conducive to HR-HPV continuous negative maintenance. Active prevention and control of PAHs exposure is of great significance to prevent HR-HPV infection and persistent infection.
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Affiliation(s)
- R X Pei
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - C H Wu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J X Yan
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H Liu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - D Meng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z Qi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Qi Z, Ding L, Meng D, Liu H, Wang J, Song L, Lyu YJ, Jia HX, Hao M, Tian ZQ, Wang JT. [Relationship between serum folate and CIN1 prognosis and its interaction with HR-HPV infection]. Zhonghua Zhong Liu Za Zhi 2021; 43:866-871. [PMID: 34407593 DOI: 10.3760/cma.j.cn112152-20200812-00732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the relationship between serum folate and the prognosis of cervical intraepithelial neoplasia grade I (CIN1) and the interaction between folate and high risk human papillomavirus (HR-HPV) infection. Methods: From a community-based married women cohort established in Jiexiu and Yangqu County of Shanxi Province from June to December 2014, a total of 564 eligible women with CIN1 by pathologically diagnosed were recruited. The pathological examination was performed again 12 months later. According to the prognosis of CIN1, participants were divided into CIN1 regression group, persistence and progression group, respectively. Nested case-control study was used to explore the relationship between serum folate and CIN1 prognosis, and additive model was used to analyze the interaction between serum folate and HR-HPV infection. Results: Among 564 CIN1 patients, 479 cases underwent pathological examination again, 331 were divided in CIN1 regression group and other 148 in persistence and progression group. The levels of serum folate in CIN1 regression group and persistence and progression group were (18.890±8.360) and (15.640±5.550) nmol/L, respectively, and the difference was statistically significant (Z=-6.937, P<0.001). HPV infection was detected in 154 patients, including 148 cases of HR-HPV infection and 6 cases of low risk human papillomavirus (LR-HPV) infection. Univariate analysis showed that there were significant differences in the age, passive smoking, frequency of pudendal cleaning, frequency of cleaning after sex, frequency of changing underwear, serum folate and HR-HPV infection between regression group and persistence and progression group (P<0.05). Multivariate logistic regression analysis showed that the frequency of pudendal cleaning (OR=0.422, 95%CI: 0.238-0.750), frequency of changing underwear (OR=0.574, 95%CI: 0.355-0.928), serum folate (13.06-16.78nmol/L: OR=4.806, 95%CI: 2.355-9.810; ≤13.05nmol/L: OR=8.378, 95%CI: 4.024-17.445), HR-HPV infection (OR=1.852, 95%CI: 1.170-2.933) were the independent influencing factors of CIN1 prognosis. Interaction analysis showed that the relative excess risk of low serum folate level and HR-HPV infection for the CIN1 persistence and progression was 4.992 (95%CI: 0.189-9.796), attributable proportion due to interaction was 0.552 (95%CI: 0.279-0.824), synergy index was 2.632 (95%CI: 1.239-5.588), aOR of serum folate≤16.78 nmol/L and HR-HPV infection positive was 9.055 (95%CI: 4.878-16.807). Conclusion: Low serum folate level could increase the risk of CIN1 persistence and progression, and might enhance the risk when combined with HR-HPV infection.
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Affiliation(s)
- Z Qi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - D Meng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H Liu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H X Jia
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, the Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Z Q Tian
- Department of Personnel, Stomatological Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Liu H, Song L, Qi Z, Meng D, Wang J, Lyu YJ, Jia HX, Ding L, Hao M, Tian ZQ, Wang JT. [Effect of dietary water-soluble vitamins on the poor prognosis of low-grade cervical intraepithelial neoplasia-a prospective cohort study]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1097-1102. [PMID: 34814514 DOI: 10.3760/cma.j.cn112338-20200807-01040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To explore the effect of dietary water-soluble vitamins on the poor prognosis of low-grade cervical intraepithelial neoplasia (CINⅠ). Methods: A total of 564 participants with CINⅠ were selected from a community-based married women cohort established in 2014. The general baseline information was collected, and HPV genotyping was detected. A food frequency questionnaire was used to investigate dietary water-soluble vitamins' consumption and determine their exposure levels. The follow-up program was carried out for 12 months, and the regression, persistence, and progression of CINⅠ was determined according to histopathological results at 12-month. Results: The low-levels of dietary water-soluble vitamins could promote CINⅠ's persistence and progression, showing the increasing tendency of CINⅠ poor prognosis with the decrease of water-soluble vitamin levels. Especially folate, VB1, VB2, VB6, niacin, biotin, and VC (RR values were 15.22, 1.86, 1.92, 2.11, 2.98, 2.14, 2.19, respectively) played an important role. Considering the status of high-risk human papillomavirus (HR-HPV) infection, our results showed that the low levels of folate, niacin, biotin could promote the poor prognosis of CINⅠ. Conclusions: The low-level of dietary water-soluble vitamins could facilitate the poor prognosis of CINⅠ. In addition, folate, niacin, biotin were more effective on HR-HPV positive women.
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Affiliation(s)
- H Liu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z Qi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - D Meng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H X Jia
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, Second Hospital, Shanxi Medical University, Taiyuan 030001, China
| | - Z Q Tian
- Stomatological Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Wang J, Ding L, Lyu YJ, Meng D, Liu H, Song L, Qi Z, Jia HX, Pei RX, Tian ZQ, Hao M, Wang JT. [The optimal model of diagnosis to low-grade cervical intraepithelial neoplasia by combined detecting vaginal micro-environmental factors, based on the high-risk HPV infection]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1108-1112. [PMID: 34814516 DOI: 10.3760/cma.j.cn112338-20200808-01045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the diagnostic value of different vaginal micro-environmental factors in low-grade cervical intraepithelial neoplasia (CIN Ⅰ) and determine the optimal model in high-risk human papillomavirus (HR-HPV) infection. Methods: A total of 926 women, including 623 with normal cervical (NC) condition and 303 CINⅠ patients, had undergone pathological examinations, and were enrolled in the study. All the women were from a community previously established cohort. Vaginal cleanliness, pH, H2O2, β-glucuronidase, coagulase, sialidase, and leukocyte esterase (LE) were detected by the combined detection method aerobic vaginitis/bacterial vaginosis in vaginal secretions. HPV genotyping was performed by using the flow-through hybridization technology. The data were analyzed by SAS 9.2 and SPSS 23.0. Results: The vaginal cleanliness, pH, sialidase, and LE were determined as the representative vaginal micro-environment factors by principal component analysis. Based on logistic regression theory to analyze the ROC curve, the results showed that the highest sensitivity was with pH value (76.2%), and the highest specificity was with sialidase (90.9%). The area under ROC curve were higher in combination detection modes of sialidase+LE (0.714), pH+sialidase+LE (0.719), vaginal cleanness+sialidase+LE (0.713) and pH+vaginal cleanness+sialidase+LE (0.709). According to HR-HPV infection status, the TOPSIS method was used to analyze the combined detection optimal model. Specifically, we found that the best diagnostic model was pH+sialidase +LE (Ci=0.585) in the HR-HPV positive group and vaginal cleanness+sialidase+LE (Ci=0.641) in the negative group. Conclusions: The combined detection of vaginal microenvironment factors could be used for auxiliary diagnosis for CINⅠ. It would be more effective when detecting pH, sialidase, and LE in HR-HPV positive women while vaginal cleanness, sialidase, and LE in HR-HPV negative women at the same time.
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Affiliation(s)
- J Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - D Meng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H Liu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z Qi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H X Jia
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - R X Pei
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z Q Tian
- Somatological Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Meng D, Song L, Qi Z, Wang J, Liu H, Lyu YJ, Jia HX, Ding L, Hao M, Tian ZQ, Wang JT. [Prognosis of high-risk HPV infection and its influences by vaginal micro-environmental factors]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1103-1107. [PMID: 34814515 DOI: 10.3760/cma.j.cn112338-20200829-01107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To describe the characteristics of high-risk human papillomavirus (HR-HPV) infection and its influences by vaginal micro-environmental factors. Methods: A total of 421 women with HR-HPV infection and normal cervix diagnosed by pathology were selected from a community cohort established earlier by our research group for a 24-month follow-up. The baseline data were collected at enrollment. The vaginal micro-environmental factors were detected by using the combined detection kit of aerobic vaginitis and bacterial vaginosis. And the HPV was detected by using the flow-through hybridization technology. According to the HR-HPV infection status in baseline and 24 months of follow-up, with the prognosis characteristics of HR-HPV infection described, the impact of vaginal micro-environmental factors on the prognosis of HR-HPV infection was explored as well. Results: Among 390 HR-HPV infected women who completed 24 months of follow-up, the top five types of persistent HR-HPV infection rate appeared as HPV16 (24.1%), HPV58 (22.2%), HPV53 (21.7%), HPV52 (20.0%), and HPV39 (11.8%), respectively. The results showed that women with abnormal vaginal pH (aOR=1.74, 95%CI: 1.08-2.80), abnormal neuraminidase (aOR=2.70, 95%CI: 1.52-4.83), or abnormal leucocyte esterase (aOR=3.41, 95%CI: 2.13-5.44), the risk of HR-HPV persistent infection increased. The abnormalities of neuraminidase and leukocyte esterase could increase the risk of persistent infection of homotype and heterotypic HR-HPV. Conclusions: HPV16 was prone to persistent infection. Abnormalities of vaginal pH, neuraminidase, and leukocyte esterase might increase the risk of HR-HPV persistent infection. Both the abnormalities of neuraminidase and leukocyte esterase play an essential role in the HR-HPV persistent infection.
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Affiliation(s)
- D Meng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z Qi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H Liu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H X Jia
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Z Q Tian
- Stomatological Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Lv W, Linpeng S, Li Z, Liang D, Jia Z, Meng D, Cram DS, Zhu H, Teng Y, Yin A, Wu L. Noninvasive prenatal diagnosis for pregnancies at risk for β-thalassaemia: a retrospective study. BJOG 2020; 128:448-457. [PMID: 32363759 DOI: 10.1111/1471-0528.16295] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To evaluate the clinical feasibility of noninvasive prenatal diagnosis (NIPD) for β-thalassaemia using circulating single molecule amplification and re-sequencing technology (cSMART). DESIGN Through carrier screening, 102 pregnant Chinese couples carrying pathogenic HBB gene variants were recruited to the study. Pregnancies were managed using traditional invasive prenatal diagnosis (IPD). Retrospectively, we evaluated the archived pregnancy plasma DNA by NIPD to evaluate the performance of our cSMART assay for fetal genotyping. SETTING Chinese prenatal diagnostic centres specialising in thalassaemia testing. POPULATION Chinese carrier couples at high genetic risk for β-thalassaemia. METHODS Fetal cell sampling was performed by amniocentesis and HBB genotypes were determined by reverse dot blot. NIPD was performed by a newly designed HBB cSMART assay and fetal genotypes were called by measuring the allelic ratios in the maternal cell-free DNA. MAIN OUTCOME MEASURES Concordance of HBB fetal genotyping between IPD and NIPD and the sensitivity and specificity of NIPD. RESULTS Invasive prenatal diagnosis identified 29 affected homozygotes or compound heterozygotes, 54 heterozygotes and 19 normal homozygotes. Compared with IPD results, 99 of 102 fetuses (97%) were correctly genotyped by our NIPD assay. Two of three discordant samples were false positives and the other sample involved an incorrect call of a heterozygote carrier as a homozygote normal. Overall, the sensitivity and specificity of our NIPD assay was 100% (95% CI 88.06-100.00%) and 97.26% (95% CI 90.45-99.67%), respectively. CONCLUSIONS This study demonstrates that our cSMART-based NIPD assay for β-thalassaemia has potential clinical utility as an alternative to IPD for pregnant HBB carrier couples. TWEETABLE ABSTRACT A new noninvasive test for pregnancies at risk for β-thalassaemia.
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Affiliation(s)
- W Lv
- Centre for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China.,Hunan Jiahui Genetics Hospital, Changsha, Hunan, China
| | - S Linpeng
- Centre for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Z Li
- Centre for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - D Liang
- Centre for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China.,Hunan Jiahui Genetics Hospital, Changsha, Hunan, China
| | - Z Jia
- Prenatal Diagnosis Centre of Hunan Province, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China
| | - D Meng
- Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi Zhuang Autonomous Region, China
| | - D S Cram
- Berry Genomics Corporation, Beijing, China
| | - H Zhu
- Centre for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Y Teng
- Hunan Jiahui Genetics Hospital, Changsha, Hunan, China
| | - A Yin
- Prenatal Diagnosis Centre, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - L Wu
- Centre for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
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Jethwa KD, Dhillon P, Meng D, Auer DP. Are Linear Measurements of the Nucleus Basalis of Meynert Suitable as a Diagnostic Biomarker in Mild Cognitive Impairment and Alzheimer Disease? AJNR Am J Neuroradiol 2019; 40:2039-2044. [PMID: 31727757 DOI: 10.3174/ajnr.a6313] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 09/03/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Cell loss within the nucleus basalis of Meynert is an early event in Alzheimer disease. The thickness of the nucleus basalis of Meynert (NBM) can be measured on structural MR imaging. We investigated NBM thickness in relation to cognitive state and biochemical markers. MATERIALS AND METHODS Mean bilateral nucleus basalis of Meynert thickness was measured on coronal T1-weighted MR imaging scans from the Alzheimer's Disease Neuroimaging Initiative dataset. Three hundred and fifteen scans (80 controls, 79 cases of early mild cognitive impairment, 77 cases of late mild cognitive impairment and 79 cases of Alzheimer disease) were assessed. Alzheimer's Disease Assessment Scale-Cognitive scores, CSF tau, and amyloid quantification were extracted. Group differences in NBM thickness, their correlates and measurement reliability were assessed. RESULTS Mean NBM thickness ± SD progressively declined from 2.9 ± 0.3, 2.5 ± 0.3, and 2.3 ± 0.3 to 1.8 ± 0.4 mm in healthy controls, patients with early mild cognitive impairment, late mild cognitive impairment and Alzheimer disease respectively (P < .001). NBM thickness was negatively correlated with Alzheimer's Disease Assessment Scale-Cognitive scores (r = -0.53, P < .001) and weakly positively correlated with CSF amyloid (r = 0.250, P < .001) respectively. No association with CSF tau was found. NBM thickness showed excellent diagnostic accuracy to differentiate Alzheimer disease (area under the curve, 0.986) and late mild cognitive impairment from controls (area under the curve, 0.936) with excellent sensitivity, but lower specificity 66.7%. Intra- and interrater reliability for measurements was 0.66 and 0.47 (P < .001). CONCLUSIONS There is progressive NBM thinning across the aging-dementia spectrum, which correlates with cognitive decline and CSF markers of amyloid-β pathology. We show high diagnostic accuracy but limited reliability, representing an area for future improvement. NBM thickness is a promising, readily available MR imaging biomarker of Alzheimer disease warranting diagnostic-accuracy testing in clinical practice.
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Affiliation(s)
- K D Jethwa
- From the Department of Radiological Sciences, Division of Clinical Neuroscience, School of Medicine; Sir Peter Mansfield Imaging Centre, School of Medicine; and National Institute for Health Research Nottingham Biomedical Research Centre (K.D.J., P.D., D.M., D.P.A.), Queen's Medical Centre, University of Nottingham, Nottingham, UK.
| | - P Dhillon
- From the Department of Radiological Sciences, Division of Clinical Neuroscience, School of Medicine; Sir Peter Mansfield Imaging Centre, School of Medicine; and National Institute for Health Research Nottingham Biomedical Research Centre (K.D.J., P.D., D.M., D.P.A.), Queen's Medical Centre, University of Nottingham, Nottingham, UK
| | - D Meng
- From the Department of Radiological Sciences, Division of Clinical Neuroscience, School of Medicine; Sir Peter Mansfield Imaging Centre, School of Medicine; and National Institute for Health Research Nottingham Biomedical Research Centre (K.D.J., P.D., D.M., D.P.A.), Queen's Medical Centre, University of Nottingham, Nottingham, UK
| | - D P Auer
- From the Department of Radiological Sciences, Division of Clinical Neuroscience, School of Medicine; Sir Peter Mansfield Imaging Centre, School of Medicine; and National Institute for Health Research Nottingham Biomedical Research Centre (K.D.J., P.D., D.M., D.P.A.), Queen's Medical Centre, University of Nottingham, Nottingham, UK
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Meng D, Hosseini AA, Simpson RJ, Welton T, Dineen RA, Auer DP. Large-scale network dysfunction in vascular cognitive disorder supports connectional diaschisis in advanced arteriosclerosis. Eur J Neurol 2019; 27:352-359. [PMID: 31505084 PMCID: PMC6973074 DOI: 10.1111/ene.14084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 02/11/2019] [Accepted: 09/03/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE The interrelation of cognitive performance, cerebrovascular damage and brain functional connectivity (FC) in advanced arteriosclerosis remains unclear. Our aim was to investigate the associations between FC, white matter damage and cognitive impairment in carotid artery disease. METHODS Seventy-one participants with a recent cerebrovascular event and with written informed consent underwent resting-state functional magnetic resonance imaging and the Addenbrooke's Cognitive Examination - Revised (ACE-R). Network and inter-hemispheric FC metrics were compared between cognitively normal and impaired subjects, and interrelated with cognition. In order to explore the nature of FC changes, their associations with microstructural damage of related white matter tracts and cognitive performance were investigated, followed by mediation analysis. RESULTS Participants with global cognitive impairment showed reduced FC compared to the cognitively intact subjects within the central executive network (CEN), and between hemispheres. Patients with executive dysfunction had decreased CEN FC whilst patients with memory loss demonstrated low FC in both the CEN and the default mode network (DMN). Global performance correlated with connectivity metrics of the CEN hub with DMN nodes, and between hemispheres. Cingulum mean diffusivity (MD) was negatively correlated with ACE-R and CEN-DMN FC. The cingulum MD-cognition association was partially mediated by CEN-DMN FC. CONCLUSIONS Long-range functional disconnection of the CEN with DMN nodes is the main feature of cognitive impairment in elderly subjects with symptomatic carotid artery disease. Our findings provide further support for the connectional diaschisis concept of vascular cognitive disorder, and highlight a mediation role of functional disconnection to explain associations between microstructural white matter tract damage and cognitive impairment.
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Affiliation(s)
- D Meng
- Radiological Sciences, Division of Clinical Neuroscience, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK.,NIHR Nottingham Biomedical Research Centre, Queen's Medical Centre, University of Nottingham, Nottingham, UK
| | - A A Hosseini
- Radiological Sciences, Division of Clinical Neuroscience, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK
| | - R J Simpson
- Radiological Sciences, Division of Clinical Neuroscience, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK.,NIHR Nottingham Biomedical Research Centre, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Department of Vascular Surgery, Queen's Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - T Welton
- Radiological Sciences, Division of Clinical Neuroscience, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK
| | - R A Dineen
- Radiological Sciences, Division of Clinical Neuroscience, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK.,NIHR Nottingham Biomedical Research Centre, Queen's Medical Centre, University of Nottingham, Nottingham, UK
| | - D P Auer
- Radiological Sciences, Division of Clinical Neuroscience, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK.,NIHR Nottingham Biomedical Research Centre, Queen's Medical Centre, University of Nottingham, Nottingham, UK
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19
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Jia J, Xie J, Li H, Wei H, Li X, Hu J, Meng D, Zhang Y, Zhang X. Cerebral blood flow abnormalities in neuropsychiatric systemic lupus erythematosus. Lupus 2019; 28:1128-1133. [PMID: 31315530 DOI: 10.1177/0961203319861677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To investigate the clinical characteristics, imaging changes and early diagnostic methods of neuropsychiatric systemic lupus erythematosus (NPSLE). METHODS Thirty-five SLE patients, of which 16 had overt neuropsychiatric symptoms, underwent examination for multiple autoantibodies, including anti-double-stranded DNA (anti-dsDNA) antibody, anti-nucleosome antibody, anti-cardiac-phospholipid antibody (aCL)-IgG, aCL-IgM, anti-β2-glycoprotein I antibody and anti-ribosomal P antibody, and the SLEDAI score of every patient was recorded. All patients further received neuropsychological tests, including the Mini-Mental State Examination, the Self-Rating Anxiety Scale and the Self-Rating Depression Scale. Imaging examination using 3D arterial spin labeling was performed on 3.0 T MRI scanners. After processing the 3D arterial spin labeling image, the cerebral blood flow map was obtained and the cerebral blood flow value was calculated. RESULTS The values of anti-dsDNA, anti-nucleosome antibody, aCL-IgG and anti-β2-glycoprotein I antibodies were significantly higher in the NPSLE group than those in the SLE group. The SLEDAI scores of the NPSLE group were significantly higher than those of the SLE group. There were no significant differences between the NPSLE group and the SLE group in the directional ability, memory, attention, numeracy, recall ability or language ability scores on the Mini-Mental State Examination scale. Furthermore, there were no symptoms of anxiety or depression in any of the patients, according to the Self-Rating Anxiety Scale and Self-Rating Depression Scale. In the 35 patients with SLE, decreases in blood perfusion were seen in some areas, and were unilateral and asymmetrically distributed. There was obvious asymmetry between sides in areas including the frontal lobe, temporal lobe, parietal lobe and occipital lobe. The incidence of perfusion decreases in frontal lobe in the NPSLE group was significantly higher than in the SLE group. CONCLUSION Neurological lesions in SLE patients can be detected by arterial spin labeling. Cerebral blood flow abnormalities may be helpful for the early diagnosis of neurological lesions in NPSLE.
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Affiliation(s)
- J Jia
- 1 Department of Rheumatology, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - J Xie
- 1 Department of Rheumatology, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - H Li
- 1 Department of Rheumatology, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - H Wei
- 1 Department of Rheumatology, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - X Li
- 2 Department of Neurology, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, China
| | - J Hu
- 1 Department of Rheumatology, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - D Meng
- 1 Department of Rheumatology, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Y Zhang
- 1 Department of Rheumatology, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - X Zhang
- 1 Department of Rheumatology, Clinical Medical College, Yangzhou University, Yangzhou, China
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20
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Meng D, Yu Q, Feng L, Luo M, Shao S, Huang S, Wang G, Jing X, Tong Z, Zhao X, Liu R. Citron kinase (CIT-K) promotes aggressiveness and tumorigenesis of breast cancer cells in vitro and in vivo: preliminary study of the underlying mechanism. Clin Transl Oncol 2018; 21:910-923. [DOI: 10.1007/s12094-018-02003-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 12/03/2018] [Indexed: 12/11/2022]
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21
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Meng Q, Qiao M, Gong S, Tian L, Li C, Qiao J, Meng D, Wu Y, Cai K, Zhang Z, Cai X. Molecular detection and genetic diversity of porcine bocavirus
in piglets in China. Acta Virol 2018; 62:343-349. [DOI: 10.4149/av_2018_401] [Citation(s) in RCA: 5] [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: 11/08/2022]
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Hosseini AA, Meng D, Simpson RJ, Auer DP. Mesiotemporal atrophy and hippocampal diffusivity distinguish amnestic from non-amnestic vascular cognitive impairment. Eur J Neurol 2017; 24:902-911. [PMID: 28547878 PMCID: PMC5518192 DOI: 10.1111/ene.13299] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 03/21/2017] [Indexed: 01/24/2023]
Abstract
Background and purpose The role of clinical factors, cerebral infarcts and hippocampal damage in vascular cognitive impairment (VCI) subtypes remains unclear. Methods Non‐demented patients with carotid stenosis and recent transient ischemic attack/stroke had cognitive assessment and brain magnetic resonance imaging (MRI). Amnestic VCI was defined as memory impairment; non‐amnestic VCI was any other subdomain impairment. Associations of MRI metrics [log‐transformed total ischemic lesion load (log TILL), mesiotemporal atrophy (MTA) score, hippocampal mean diffusivity (hipMD)] with cognitive performance were assessed. Results A hundred and eight patients, 47 with amnestic VCI and 21 with non‐amnestic VCI, were assessed. A higher MTA (odds ratio 12.89, P = 0.001) and left hipMD (odds ratio 4.43, P = 0.003) contributed to amnestic VCI versus normal. Age‐adjusted fluency correlated with log TILL (P = 0.002). Age‐adjusted memory was associated with left hipMD (P = 0.001), MTA (P < 0.001) but not log TILL (P = 0.14). Left hipMD, MTA and smoking showed classification potential between amnestic VCI versus normal (area 0.859, P < 0.001). Conclusions Neuroimaging assists stratification in amnestic VCI characterized by hippocampal changes and in non‐amnestic VCI by higher ischemic burden. MTA and hippocampal diffusivity show diagnostic biomarker potential.
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Affiliation(s)
- A A Hosseini
- Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK.,Division of Clinical Neuroscience, Radiological Sciences, University of Nottingham, Nottingham, UK
| | - D Meng
- Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK.,Division of Clinical Neuroscience, Radiological Sciences, University of Nottingham, Nottingham, UK
| | - R J Simpson
- Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK.,Division of Clinical Neuroscience, Radiological Sciences, University of Nottingham, Nottingham, UK
| | - D P Auer
- Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK.,Division of Clinical Neuroscience, Radiological Sciences, University of Nottingham, Nottingham, UK
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Wang L, Mou Y, Meng D, Sun Y, Chen X, Yang X, Jia C, Song X, Li X. MicroRNA-203 inhibits tumour growth and metastasis through PDPN. Clin Otolaryngol 2016; 42:620-628. [PMID: 27775879 DOI: 10.1111/coa.12785] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVE MicroRNAs play an important role in regulating hypopharyngeal cancer development. miR-203 has been previously shown to possess antitumour capabilities in many cancers, but not in hypopharyngeal cancer. DESIGN Using human normal and hypopharyngeal cancer specimens, we explored the expression levels of miR-203 in the two groups and further correlated them with different stages of cancer and lymph node metastasis. SETTING AND PARTICIPANTS Applying human pharynx FaDu cancer cells and lentiviral transduction technique, we investigated the effects of miR-203 on cancer cell viability, migration and invasion. Moreover, we studied the novel relationship between miR-203 and podoplanin (PDPN) in hypopharyngeal cancer. RESULTS The downregulated levels of miR-203 in human hypopharyngeal cancer tissues were associated with advanced cancer stages and lymph node metastasis. High levels of miR-203 inhibited cell viability, migration and invasion of hypopharyngeal cancer cells. Further studies suggested miR-203 directly targeted and inhibited PDPN expression. PDPN silencing suppresses hypopharyngeal cancer cell abilities. In addition, PDPN overexpression was able to reverse miR-203 inhibitory effects on cell viability, migration and invasion. CONCLUSION PDPN acts as an oncogene to promote hypopharyngeal cancer cell viability, migration and invasion. miR-203 directly targets PDPN to suppress its expression, thus exerting inhibitory effects on cancer metastasis.
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Affiliation(s)
- L Wang
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Otorhinolaryngology Head and Neck Surgery, Yuhuangding Hospital, Yantai, Shandong, China
| | - Y Mou
- Department of Otorhinolaryngology Head and Neck Surgery, Yuhuangding Hospital, Yantai, Shandong, China
| | - D Meng
- Intensive Care Unit, Yuhuangding Hospital, Yantai, Shandong, China
| | - Y Sun
- Department of Otorhinolaryngology Head and Neck Surgery, Yuhuangding Hospital, Yantai, Shandong, China
| | - X Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Yuhuangding Hospital, Yantai, Shandong, China
| | - X Yang
- Department of Otorhinolaryngology Head and Neck Surgery, Yuhuangding Hospital, Yantai, Shandong, China
| | - C Jia
- Department of Otorhinolaryngology Head and Neck Surgery, Yuhuangding Hospital, Yantai, Shandong, China
| | - X Song
- Department of Otorhinolaryngology Head and Neck Surgery, Yuhuangding Hospital, Yantai, Shandong, China
| | - X Li
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, Jinan, Shandong, China
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Francis L, Meng D, Locke IC, Knowles JC, Mordan N, Salih V, Boccaccini AR, Roy I. Novel poly(3-hydroxybutyrate) composite films containing bioactive glass nanoparticles for wound healing applications. POLYM INT 2016. [DOI: 10.1002/pi.5108] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Lydia Francis
- Faculty of Science and Technology; University of Westminster; 115 New Cavendish Street London W1W 6UW UK
| | - Decheng Meng
- Department of Materials; Imperial College London; Prince Consort Road London SW7 2BP UK
| | - Ian C Locke
- Faculty of Science and Technology; University of Westminster; 115 New Cavendish Street London W1W 6UW UK
| | - Jonathan C Knowles
- UCL Eastman Dental Institute; University College London; 256 Gray's Inn Road London WC1X 8LD UK
| | - Nicola Mordan
- UCL Eastman Dental Institute; University College London; 256 Gray's Inn Road London WC1X 8LD UK
| | - Vehid Salih
- UCL Eastman Dental Institute; University College London; 256 Gray's Inn Road London WC1X 8LD UK
- Plymouth University Peninsula School of Medicine & Dentistry Plymouth, Devon; PL4 8AA UK
| | - Aldo R Boccaccini
- Department of Materials; Imperial College London; Prince Consort Road London SW7 2BP UK
- Institute of Biomaterials, Department of Materials Science and Engineering; University of Erlangen-Nuremberg; Cauerstr. 6 91058 Erlangen Germany
| | - Ipsita Roy
- Faculty of Science and Technology; University of Westminster; 115 New Cavendish Street London W1W 6UW UK
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25
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Meng D, Li Z, Ma X, Fu L, Qin G. MicroRNA-1280 modulates cell growth and invasion of thyroid carcinoma through targeting estrogen receptor α. Cell Mol Biol (Noisy-le-grand) 2016; 62:1-6. [PMID: 27064865] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 03/15/2016] [Indexed: 06/05/2023]
Abstract
Thyroid cancer (TC) is one of the most common endocrine malignancies, with a steadily increasing incidence and lethality over the last several decades. ERα is a nuclear hormone receptor that has a key role in different cellular process and participates in the development and progression of thyroid cancer. ERα is the predicted target gene of microRNA-1280 (miR-1280). The present study was designed to delineate the role and underlying mechanism of miR-1280 in regulating thyroid cancer through targeting ERα. In our study, we analyzed the expression level of miR-1280 in thyroid cancer and detected significantly lower miR-1280 levels in TC tissue and cell lines compared with adjacent normal tissue or healthy cell line. We then overexpressed miR-1280 by miRNA mimic transfection and inhibited miR-1280 by miRNA inhibitor transfection. The inhibition of miR-1280 significantly elevated proliferation and invasion ability, whereas overexpression of miR-1280 inhibited cell growth and invasion in TC cells. Additionally, the luciferase reporter assay confirmed a targeting reaction between miR-1280 and ERα. Furthermore, overexpression of miR-1280 inhibited ERα and ERK pathway expression in TC cells, indicating that miR-1280 acts as a tumor suppressor by inhibiting the expression of ERα. Taken together, we demonstrated that overexpressed miR-1280 levels in TC cells may promote cell proliferation and invasion by inhibiting ERα, which might provide a new therapeutic target for thyroid cancer.
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Affiliation(s)
- D Meng
- The First Affiliated Hospital of Zhengzhou University Department of Endocrinology Zhengzhou China
| | - Z Li
- The First Affiliated Hospital of Zhengzhou University Department of Orthopaedic Surgery Zhengzhou China
| | - X Ma
- The First Affiliated Hospital of Zhengzhou University Department of Endocrinology Zhengzhou China
| | - L Fu
- The First Affiliated Hospital of Zhengzhou University Department of Thyroid Surgery Zhengzhou China
| | - G Qin
- The First Affiliated Hospital of Zhengzhou University Department of Endocrinology Zhengzhou China
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26
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Lee M, Meng D, Kiernan M, Johnson B. 8. Exploring motor imagery and motor cortical function in amyotrophic lateral sclerosis using magnetoencephalography. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2015.11.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Liu Q, Jiang CY, Chen BX, Zhao W, Meng D. The association between high-sensitivity C-reactive protein concentration and diabetic nephropathy: a meta-analysis. Eur Rev Med Pharmacol Sci 2015; 19:4558-4568. [PMID: 26698253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To explore the association between high-sensitivity C-reactive protein (hs-CRP) concentration and diabetic nephropathy (DN). MATERIALS AND METHODS We systematically searched Pubmed, Medline and Embase databases up to September, 2014 for the relevant studies. Heterogeneity across studies was evaluated by Cochran's Q test and I2 statistic. The standard mean difference (SMD) and the corresponding 95% confidence interval (CI) were combined to evaluate the effect size. Sensitivity analysis was also performed by omitting each study to evaluate the stability of the results. In addition, publication bias was tested by Egger's test. RESULTS A total of 11 studies containing 1 331 cases and 1 779 controls were included in this study. Significant heterogeneities were observed in our results. The result of meta-analysis showed that the hs-CRP concentrations in DN patients were significantly higher than that in controls of healthy people and diabetes mellitus (DM) patients without nephropathy. In addition, the hs-CRP concentration in macroalbuminuria (D3) group was significantly higher than that in microalbuminuria (D2) group and non-albuminuria group (D1). Sensitivity analysis revealed that the results were stable. As well, no publication bias was observed in our results. CONCLUSIONS We suggest that hs-CRP concentration can be an indicator of DN in DM patients.
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Affiliation(s)
- Q Liu
- Department of Obesity and Metabolism, Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China.
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Zhang X, Meng D, Li X, Meng L, Sun Z. Nature of the M–M bonding (M = Cr, Mo, and W) in [CpM(CO)3]2: Covalent single bond or noncovalent interaction? J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.07.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Huo S, Meng D, Zhang X, Meng L, Li X. Bonding analysis of the donor-acceptor sandwiches CpE-MCp (E = B, Al, Ga; M = Li, Na, K; Cp = η⁵-C₅H₅). J Mol Model 2014; 20:2455. [PMID: 25227450 DOI: 10.1007/s00894-014-2455-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Accepted: 09/01/2014] [Indexed: 11/28/2022]
Abstract
The nature of E-M bonds in CpE-MCp (E = B, Al, Ga; M = Li, Na, K; Cp = η (5)-C5H5) donor-acceptor sandwiches was studied using the atoms in molecules (AIM) theory, electron localization function (ELF), energy decomposition analysis (EDA), and natural bond orbital analysis (NBO) methods. Both topological and orbital analysis show that the E atom determines the bond strength of the E-M bonds, while the M atom has little influence on it. E-M bond strength decreases in the order E = B, Al, and Ga. The EDA analysis shows that the electrostatic character decreases following the sequence E = B > Al > Ga. Not only the s orbital, but also the p orbital of the E/M atom participates in formation of the E-M bond. The interactions of E and M with Cp are different. The M-Cp interaction is purely electrostatic while the E-Cp interaction has a partly covalent character.
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Affiliation(s)
- Suhong Huo
- College of Chemistry and Material Science, Hebei Normal University, Road East of 2nd Ring South, Shijiazhuang, 050024, China
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Meng D, Francis L, Thompson ID, Mierke C, Huebner H, Amtmann A, Roy I, Boccaccini AR. Tetracycline-encapsulated P(3HB) microsphere-coated 45S5 Bioglass(®)-based scaffolds for bone tissue engineering. J Mater Sci Mater Med 2013; 24:2809-2817. [PMID: 23892485 DOI: 10.1007/s10856-013-5012-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 07/16/2013] [Indexed: 06/02/2023]
Abstract
Bioglass(®)-based scaffolds for bone tissue engineering have been developed, which can also serve as carriers for drug delivery. For this, P(3HB) microspheres (PMSs) loaded with tetracycline were fabricated and immobilised on the scaffold surfaces by a modified slurry dipping technique. The sustained drug delivery ability in simulated body fluid was confirmed by using UV-Vis absorption spectroscopy measurements. The MTT assay using mouse fibroblast cells provided evidence that the tetracycline loaded microspheres produced in this study show limited cytotoxicity. The scaffolds developed in this work provide mechanical support, adequate 3D surface roughness, bioactivity and controlled drug delivery function, and are thus interesting candidates for bone tissue engineering applications.
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Affiliation(s)
- D Meng
- Department of Materials, Imperial College London, London, SW7 2BP, UK
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Lei L, Mao Y, Meng D, Zhang X, Cui L, Huo Y, Wang Y. Percentage of circulating CD8+ T lymphocytes is associated with albuminuria in type 2 diabetes mellitus. Exp Clin Endocrinol Diabetes 2013; 122:27-30. [PMID: 24203650 DOI: 10.1055/s-0033-1358666] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
T lymphocytes have been demonstrated to play a role in the development of diabetic proteinuria. However, the alteration of circulating T lymphocytes has not been investigated in a type 2 diabetic cohort. A cross-sectional study was conducted in Peking University Aerospace Center Hospital. 510 participants were type 2 diabetes mellitus, 30-70 years of age. Patients with immune disease, medical conditions that affect immune function, infection, or end-organ damage were excluded. The percentage of circulating CD8+ T lymphocytes was significantly associated with albuminuria in the cohort. The impact of albuminuria to CD8+ T lymphocytes in a multivariate linear regression model was indicated by the B- coefficient (95% confidence interval) 1.812 (0.204-3.421, P=0.03). Our data first showed that the percentage of circulating CD8+ T cells is associated with albuminuria in type 2 diabetes mellitus, which may support the rationality of systemic inhibition of T lymphocytes in treating albuminuria in these patients.
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Affiliation(s)
- L Lei
- Division of Hematology and Endocrinology, Peking University Aerospace Center Hospital, Beijing, China
| | - Y Mao
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - D Meng
- Division of Hematology and Endocrinology, Peking University Aerospace Center Hospital, Beijing, China
| | - X Zhang
- Division of Hematology and Endocrinology, Peking University Aerospace Center Hospital, Beijing, China
| | - L Cui
- Division of Hematology and Endocrinology, Peking University Aerospace Center Hospital, Beijing, China
| | - Y Huo
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Y Wang
- Division of Hematology and Endocrinology, Peking University Aerospace Center Hospital, Beijing, China
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Meng D, Rath SN, Mordan N, Salih V, Kneser U, Boccaccini AR. In vitro evaluation of 45S5 Bioglass®-derived glass-ceramic scaffolds coated with carbon nanotubes. J Biomed Mater Res A 2011; 99:435-44. [DOI: 10.1002/jbm.a.33185] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 05/05/2011] [Accepted: 05/19/2011] [Indexed: 01/21/2023]
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Wang B, Meng D, Wang J, Liu S, Zhou S, Miao Z, Han L, Chu N, Zhang K, Ma X, Li C. Genetic association of polymorphism rs1333049 with gout. Rheumatology (Oxford) 2011; 50:1559-1561. [DOI: 10.1093/rheumatology/ker135] [Citation(s) in RCA: 10] [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: 08/30/2023] Open
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Francis L, Meng D, Knowles J, Keshavarz T, Boccaccini AR, Roy I. Controlled delivery of gentamicin using poly(3-hydroxybutyrate) microspheres. Int J Mol Sci 2011; 12:4294-314. [PMID: 21845079 PMCID: PMC3155352 DOI: 10.3390/ijms12074294] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 06/27/2011] [Accepted: 06/27/2011] [Indexed: 12/13/2022] Open
Abstract
Poly(3-hydroxybutyrate), P(3HB), produced from Bacillus cereus SPV using a simple glucose feeding strategy was used to fabricate P(3HB) microspheres using a solid-in-oil-water (s/o/w) technique. For this study, several parameters such as polymer concentration, surfactant and stirring rates were varied in order to determine their effect on microsphere characteristics. The average size of the microspheres was in the range of 2 μm to 1.54 μm with specific surface areas varying between 9.60 m2/g and 6.05 m2/g. Low stirring speed of 300 rpm produced slightly larger microspheres when compared to the smaller microspheres produced when the stirring velocity was increased to 800 rpm. The surface morphology of the microspheres after solvent evaporation appeared smooth when observed under SEM. Gentamicin was encapsulated within these P(3HB) microspheres and the release kinetics from the microspheres exhibiting the highest encapsulation efficiency, which was 48%, was investigated. The in vitro release of gentamicin was bimodal, an initial burst release was observed followed by a diffusion mediated sustained release. Biodegradable P(3HB) microspheres developed in this research has shown high potential to be used in various biomedical applications.
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Affiliation(s)
- Lydia Francis
- Department of Applied and Molecular Biosciences, School of Life Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, UK; E-Mails: (L.F.); (T.K.)
| | - Decheng Meng
- Department of Materials, Imperial College London Prince Consort Rd, London SW7 2AZ, UK; E-Mail:
| | - Jonathan Knowles
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London 256 Gray’s Inn Road, London WC1X 8LD, UK; E-Mail:
- WCU Research Centre of Nanobiomedical Science, Dankook University, San#29, Anseo-dong, Dongnam-gu, Cheonan-si, Chungnam, 330-714, Korea
| | - Tajalli Keshavarz
- Department of Applied and Molecular Biosciences, School of Life Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, UK; E-Mails: (L.F.); (T.K.)
| | - Aldo R. Boccaccini
- Department of Materials, Imperial College London Prince Consort Rd, London SW7 2AZ, UK; E-Mail:
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
- Authors to whom correspondence should be addressed; E-Mails: (A.R.B.); (I.R.); Tel.: +49-(0)9131-85-28601 (A.R.B.); +44-207911-5000 ext. 64096 (I.R.)
| | - Ipsita Roy
- Department of Applied and Molecular Biosciences, School of Life Sciences, University of Westminster, 115 New Cavendish Street, London W1W 6UW, UK; E-Mails: (L.F.); (T.K.)
- Authors to whom correspondence should be addressed; E-Mails: (A.R.B.); (I.R.); Tel.: +49-(0)9131-85-28601 (A.R.B.); +44-207911-5000 ext. 64096 (I.R.)
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Zhou S, Sun C, Meng D, Shi W, Lv Q, Jing J, Zhao Y. Abstract P4-11-10: A Study of Intraoperative Radiotherapy with Electrons in Breast-Conserving Surgery in China: 3 Year Results. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p4-11-10] [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: 11/16/2022]
Abstract
Abstract
Background:The standard treatment for most localised breast cancer patients is the breast-conservating sugery followed by postoperative radiation worldwide. Preliminary studies of intraoperative radiotherapy with electrons(ELIOT) in selected patients, mainly in Europe since 1999, have shown good local control, less toxicity and satisfatory cosmetic apperance. However few studies have been conducted among non-western populations. To investigate the feasibility of ELIOT in China, we introduced ELIOT in selected early breast cancer patients. Risk of local relapse is the main outcome objective, toxicity and cosmetic results are also studied.
Patients and Methods:From June 2007 to May 2010, 51 patients diagnosed with unifocal breast carcinoma up to a diameter of 3cm received a wide excision of the primary tumor followed by a radiotherapy of 21Gy delivered to the breast tissue at the surface of the tumor bed, biologically equivalent to 58 to 60 Gy in standard fractionation.
The median age of the treated patients was 47 years, with 38/51(74.5%) patients younger than 50. 8 patients(15.7%) were found to have positive axillary I-nodes(six patients had one node involved, one patient had two and one had three positive nodes). Pathologic free margins ≥10 mm were obtained in all patients. Patients were evaluated semiannunally after surgery, and thereafter every 6 months for cosmetic results, complications and other events.
Results: After a follow-up from 4 to 36 months(median time12 months), 3 patients developed fat deliquescence, 16 patients showed wound edema and excess fluid and no one had incision infection or hematoma. Two patients developed local relapses. One was comfirmed unrecognised multi-focal cancer in other quadrants of the breast remain dormant. The other patient was confirmed ipsilateral positive axillary III-nodes and no relapse was found in the same quadrant. Neither contralateral breast cancer nor distant metastases were observed. No replase was found in patients aged <50. Accodring to the JCRT standard, cosmetic result was excellent in 73.1% and 90.9% patients at one year and two year checkup respectively, and good was found in 15.4% and 9.1% patients.
Conclusion:The incidence of breast cancer remains to increase in China with the aging of society and changes of lifestyle, and the highest incidence is found in the age group 45-50 years.Our study suggested the toxicity and cosmetic evalution were good. Data on local control were encouraging, especially for those under 50. ELIOT of 21Gy was a well-tolerated treatment in early stage Chinese breast cancer patients. And further follow up is still needed.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P4-11-10.
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Affiliation(s)
- S Zhou
- The Fourth Affiliated Hospital of Suzhou University, Wuxi, Jiangsu, China
| | - C Sun
- The Fourth Affiliated Hospital of Suzhou University, Wuxi, Jiangsu, China
| | - D Meng
- The Fourth Affiliated Hospital of Suzhou University, Wuxi, Jiangsu, China
| | - W Shi
- The Fourth Affiliated Hospital of Suzhou University, Wuxi, Jiangsu, China
| | - Q Lv
- The Fourth Affiliated Hospital of Suzhou University, Wuxi, Jiangsu, China
| | - J Jing
- The Fourth Affiliated Hospital of Suzhou University, Wuxi, Jiangsu, China
| | - Y. Zhao
- The Fourth Affiliated Hospital of Suzhou University, Wuxi, Jiangsu, China
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Meng D, Cao Y, Fu J, Chen R, Lu L, Tu Y. Sonographic Assessment of Ceftriaxone-Associated Biliary Pseudolithiasis in Chinese Children. J Int Med Res 2010; 38:2004-10. [PMID: 21227004 DOI: 10.1177/147323001003800614] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In this randomized, single-blind, case-controlled, prospective study, the incidence and outcome of ceftriaxone-associated biliary pseudolithiasis in Chinese children was evaluated via ultrasonography. A total of 108 children diagnosed with hepatobiliary infection or pneumonia were randomized to receive ceftriaxone or ceftazidime. Serial gallbladder sonograms were obtained on days 1, 5 − 7 and 10 − 14 of therapy. Gallstones were detected in 43.10% of patients in the ceftriaxone-treated group and in 2.00% of the ceftazidime-treated group. The incidence of pseudolithiasis was significantly higher in the ceftriaxone-treated than the ceftazidime-treated group. Biliary precipitation abnormalities appeared after 2 − 7 days of treatment. After gallstones were found, the drug was stopped and symptoms resolved within 1 − 2 days. This study suggests that the risk of ceftriaxone-associated biliary pseudolithiasis should be considered when treating Chinese children.
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Affiliation(s)
| | - Y Cao
- Department of Emergency Medicine
| | - J Fu
- Department of Endocrinology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - R Chen
- Department of Haematology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | | | - Y Tu
- Department of Emergency Medicine
- Department of Endocrinology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Beck PL, Ihara E, Hirota SA, MacDonald JA, Meng D, Nanthakumar NN, Podolsky DK, Xavier RJ. Exploring the interplay of barrier function and leukocyte recruitment in intestinal inflammation by targeting fucosyltransferase VII and trefoil factor 3. Am J Physiol Gastrointest Liver Physiol 2010; 299:G43-53. [PMID: 20299601 PMCID: PMC2904110 DOI: 10.1152/ajpgi.00228.2009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Intestinal mucosal integrity is dependent on epithelial function and a regulated immune response to injury. Fucosyltransferase VII (Fuc-TVII) is an essential enzyme required for the expression of the functional ligand for E- and P-selectin. Trefoil factor 3 (TFF3) is involved in both protecting the intestinal epithelium against injury as well as aiding in wound repair following injury. The aim of the present study was to assess the interplay between barrier function and leukocyte recruitment in intestinal inflammation. More specifically, we aimed to examine how targeted disruption of Fuc-TVII either in wild-type or TFF3(-/-) mice would alter their susceptibility to colonic injury. TFF3 and Fuc-TVII double-knockout mice (TFF3/Fuc-TVII(-/-) mice) were generated by mating TFF3(-/-) and Fuc-TVII(-/-) mice. Colitis was induced by administration of dextran sodium sulfate (DSS) (2.5% wt/vol) in the drinking water. Changes in baseline body weight, diarrhea, and fecal blood were assessed daily. Upon euthanasia, extents of colonic inflammation were assessed macroscopically, microscopically, and through quantification of myeloperoxidase (MPO) activity. Colonic lymphocyte subpopulations were assessed at 6 days after administration of DSS by flow cytometry and immunohistochemistry. No baseline intestinal inflammation was found in TFF3/Fuc-TVII(-/-), TFF3(-/-), Fuc-TVII(-/-), or wild-type mice. Loss of Fuc-TVII resulted in a reduction in disease severity whereas TFF3(-/-) mice were markedly more susceptible to DSS-induced colitis. Remarkably, the loss of Fuc-TVII in TFF3(-/-) mice markedly decreased the severity of DSS-induced colitis as evidenced by reduced weight loss, diarrhea, decreased colonic MPO levels and improved survival. Furthermore, the loss of TFF3 resulted in increased severity of spontaneous colitis in IL-2/beta-microglobulin-deficient mice. These studies highlight the importance of the interplay between factors involved in the innate immune response, mucosal barrier function, and genes involved in regulating leukocyte recruitment and other aspects of the immune response.
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Affiliation(s)
- P. L. Beck
- 1Gastrointestinal Research Group, University of Calgary, Calgary, Alberta, Canada;
| | - E. Ihara
- 1Gastrointestinal Research Group, University of Calgary, Calgary, Alberta, Canada;
| | - S. A. Hirota
- 1Gastrointestinal Research Group, University of Calgary, Calgary, Alberta, Canada;
| | - J. A. MacDonald
- 1Gastrointestinal Research Group, University of Calgary, Calgary, Alberta, Canada;
| | - D. Meng
- 3Center for Computational and Integrative Biology, Massachusetts General Hospital, Boston, Massachusetts; and
| | - N. N. Nanthakumar
- 3Center for Computational and Integrative Biology, Massachusetts General Hospital, Boston, Massachusetts; and
| | - D. K. Podolsky
- 4University of Texas, Southwestern Medical Center, Dallas, Texas
| | - R. J. Xavier
- 2Gastrointestinal Unit and Center for Study of Inflammatory Bowel Disease;
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Francis L, Meng D, Knowles JC, Roy I, Boccaccini AR. Multi-functional P(3HB) microsphere/45S5 Bioglass-based composite scaffolds for bone tissue engineering. Acta Biomater 2010; 6:2773-86. [PMID: 20056174 DOI: 10.1016/j.actbio.2009.12.054] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [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: 08/13/2009] [Revised: 12/08/2009] [Accepted: 12/30/2009] [Indexed: 11/28/2022]
Abstract
Novel multi-functional P(3HB) microsphere/45S5 Bioglass-based composite scaffolds exhibiting potential for drug delivery were developed for bone tissue engineering. 45S5 Bioglass-based glass-ceramic scaffolds of high interconnected porosity produced using the foam-replication technique were coated with biodegradable microspheres (size<2 microm) made from poly(3-hydroxybutyrate), P(3HB), produced using Bacillus cereus SPV. A solid-in-oil-in-water emulsion solvent extraction/evaporation technique was used to produce these P(3HB) microspheres. A simple slurry-dipping method, using a 1 wt.% suspension of P(3HB) microspheres in water, dispersed by an ultrasonic bath, was used to coat the scaffold, producing a uniform microsphere coating throughout the three-dimensional scaffold structure. Compressive strength tests confirmed that the microsphere coating slightly enhanced the scaffold mechanical strength. It was also confirmed that the microsphere coating did not inhibit the bioactivity of the scaffold when immersed in simulated body fluid (SBF) for up to 4 weeks. The hydroxyapatite (HA) growth rate on P(3HB) microsphere-coated 45S5 Bioglass composite scaffolds was very similar to that on the uncoated control sample, qualitatively indicating similar bioactivity. However, the surface topography of the HA surface layer was affected as shown by results obtained from white light interferometry. The roughness of the surface was much higher for the P(3HB) microsphere-coated scaffolds than for the uncoated samples, after 7 days in SBF. This feature would facilitate cell attachment and proliferation. Finally, gentamycin was successfully encapsulated into the P(3HB) microspheres to demonstrate the drug delivery capability of the scaffolds. Gentamycin release kinetics was determined using liquid chromatography-mass spectrometry. The release of the drug from the coated composite scaffolds was slow and controlled when compared to the observed fast and relatively uncontrolled drug release from the bone scaffold (without microsphere coating). Thus, this unique multifunctional bioactive composite scaffold has the potential to enhance cell attachment and to provide controlled delivery of relevant drugs for bone tissue engineering.
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Affiliation(s)
- Lydia Francis
- Department of Molecular and Applied Biosciences, University of Westminster, London, UK
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Li C, Han L, Levin AM, Song H, Yan S, Wang Y, Wang Y, Meng D, lv S, Ji Y, Xu X, Liu X, Wang Y, Zhou L, Miao Z, Mi QS. Multiple single nucleotide polymorphisms in the human urate transporter 1 (hURAT1) gene are associated with hyperuricaemia in Han Chinese. J Med Genet 2009; 47:204-10. [DOI: 10.1136/jmg.2009.068619] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Meng D, Ioannou J, Boccaccini AR. Bioglass-based scaffolds with carbon nanotube coating for bone tissue engineering. J Mater Sci Mater Med 2009; 20:2139-2144. [PMID: 19437104 DOI: 10.1007/s10856-009-3770-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2009] [Accepted: 04/27/2009] [Indexed: 05/27/2023]
Abstract
Highly porous 45S5 Bioglass-based foam scaffolds were coated with multi-walled carbon nanotubes (CNT) by electrophoretic deposition (EPD) technique. By placing the scaffolds in between the two electrodes of the EPD cell, a CNT coating of up to 1 mum thickness was achieved on the surface throughout the whole three dimensional (3D) matrix. A 0.5 wt% CNT aqueous suspension was used and EPD was carried out at 2.8 V for 10 mins. The compression strength of this CNT/Bioglass composite was measured to be 0.70 MPa. Moreover the increased electrical conductivity of the composite with CNT coating was confirmed. The scaffolds have the potential for applications in bone tissue engineering due to the high bioactivity, nano-roughness in 3D and electrical conductivity provided by the addition of CNT.
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Affiliation(s)
- Decheng Meng
- Department of Materials, Imperial College London, Prince Consort Road, London SW7 2AZ, UK
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Chapman J, Meng D, Shepherd L, Parulekar W, Ingle JN, Muss HB, Palmer M, Yu C, Goss PE. Competing causes of death in NCIC CTG MA.17, a placebo-controlled trial of letrozole as extended adjuvant therapy for breast cancer patients. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
540 Background: Risk of death from other malignancies (OM) and other causes (OC) than breast cancer (BC) increases with age. Effects of baseline factors on type of death were assessed with competing risks analyses. Methods: In NCIC CTG MA.17, 5,187 women free of recurrent breast cancer after 5 years of tamoxifen were randomized to letrozole (L, 2,593 women) or placebo (P, 2,594 women). The primary endpoint was disease free survival (DFS), and secondary, overall survival (OS). Follow-up was to October 9, 2005: median 3.9 years, range <0.1 to 7.0 years. Effects of competing risks were examined for endpoints of BC, OM, and OC for 11 baseline trial factors: treatment, age, menopausal status, duration of prior tamoxifen, adjuvant radiotherapy, bone fracture, osteoporosis, cardiovascular disease, hormone receptor status, nodal status, adjuvant chemotherapy. Lagakos’ hierarchical method (Lagakos, Appl. Statist. 1978; 27:235–241) was used to test for differential effects of baseline factors on type of death (BC, OM, OC). Results: Rate of censoring was 97.8%, with 256 deaths (BC, 102; OM, 50; OC, 100; unknown, 4). Non-breast cancer deaths accounted for 60% of known deaths; 72%, for those ≥70 years; and 48%, for those <70 years. Two baseline factors differentially affected type of death. Women with cardiovascular disease were more likely to die from OC (p=0.02), while those with osteoporosis were more likely to die of OM (p=0.03). Age and nodal status had directionally similar effects. Older women had shorter survival from all 3 causes of death (p=0.01). Lymph node positivity was associated with worse survival (p=0.003). Conclusions: Extended L provides similar proportional benefit in improving DFS for all ages of women (Muss ref abstract SABCS 2006). However, the magnitude of competing non-breast cancer, and non-treatment related, causes of death needs to be considered more frequently, since with early detection and improved therapies, breast cancer patients may increasingly be expected to survive their disease to die from another cause. The novel association between baseline osteoporosis and other malignancies is being explored quantitatively. No significant financial relationships to disclose.
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Affiliation(s)
- J. Chapman
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
| | - D. Meng
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
| | - L. Shepherd
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
| | - W. Parulekar
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
| | - J. N. Ingle
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
| | - H. B. Muss
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
| | - M. Palmer
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
| | - C. Yu
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
| | - P. E. Goss
- Queen’s University, Kingston, ON, Canada; Mayo Clinic College of Medicine, Rochester, MN; University of Vermont, Burlington, VT; Harvard University, Boston, MA
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Pollak MN, Chapman JW, Shepherd L, Meng D, Richardson P, Wilson C, Orme B, Pritchard KI. Insulin resistance, estimated by serum C-peptide level, is associated with reduced event-free survival for postmenopausal women in NCIC CTG MA.14 adjuvant breast cancer trial. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.524] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
524 Background: NCIC CTG MA.14 is a randomized multi-centre trial of tamoxifen versus combined tamoxifen and octreotide LAR therapy in the adjuvant treatment of breast cancer in post-menopausal women. Planned secondary analyses included investigation of baseline metabolic factors that might influence survival. Laboratory and clinical studies indicate that insulin resistance is associated with adverse outcome in breast cancer. Insulin resistance elevates C-peptide levels. Methods: In MA.14, trial patients with stage I or II postmenopausal breast cancer were randomized from September, 1996 until July, 2000 to receive 20 mg tamoxifen PO daily for 5 years with/without the administration of the somatostatin analogue Octreotide LAR 90 mg depot injection monthly for 2 years. Event-free survival (EFS), the trial’s primary outcome measure, was defined as time from randomization to time of recurrence of primary disease, time of second malignancy or death due to any cause. We investigated the effect of baseline IGF-I, IGFBP-3, and C-peptide levels on EFS. Kaplan-Meier univariate and Cox step-wise multivariate regressions were performed with/without adjustment for the stratification factors of adjuvant chemotherapy, nodal status, and hormone receptor status, and included patient age (years) and tumour size (T-status). Results: These results are based on analysis of patient serum for the trial’s 667 patients. Median follow-up for those alive is 6.1 years; patients experienced 165 events. Higher C-peptide levels were associated with significantly worse EFS in adjusted, and unadjusted, univariate and multivariate analyses. Final efficacy analyses are expected within a few months. Updated analyses for the effects of baseline metabolic markers and body mass index on EFS will be presented. Conclusions: This is the largest data set, and the first clinical trial, linking higher serum C-peptide levels to adverse outcome in patients with early breast cancer. These results raise concern in the context of increasing population prevalence of insulin resistance. Potential novel adjuvant therapies exist as insulin resistance is modifiable. [Table: see text]
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Affiliation(s)
- M. N. Pollak
- Jewish General Hospital, Montreal, PQ, Canada; National Cancer Institute of Canada Clinical Trial, Kingston, ON, Canada; Sunnybrook and Women’s, University of Toronto, Toronto, ON, Canada
| | - J. W. Chapman
- Jewish General Hospital, Montreal, PQ, Canada; National Cancer Institute of Canada Clinical Trial, Kingston, ON, Canada; Sunnybrook and Women’s, University of Toronto, Toronto, ON, Canada
| | - L. Shepherd
- Jewish General Hospital, Montreal, PQ, Canada; National Cancer Institute of Canada Clinical Trial, Kingston, ON, Canada; Sunnybrook and Women’s, University of Toronto, Toronto, ON, Canada
| | - D. Meng
- Jewish General Hospital, Montreal, PQ, Canada; National Cancer Institute of Canada Clinical Trial, Kingston, ON, Canada; Sunnybrook and Women’s, University of Toronto, Toronto, ON, Canada
| | - P. Richardson
- Jewish General Hospital, Montreal, PQ, Canada; National Cancer Institute of Canada Clinical Trial, Kingston, ON, Canada; Sunnybrook and Women’s, University of Toronto, Toronto, ON, Canada
| | - C. Wilson
- Jewish General Hospital, Montreal, PQ, Canada; National Cancer Institute of Canada Clinical Trial, Kingston, ON, Canada; Sunnybrook and Women’s, University of Toronto, Toronto, ON, Canada
| | - B. Orme
- Jewish General Hospital, Montreal, PQ, Canada; National Cancer Institute of Canada Clinical Trial, Kingston, ON, Canada; Sunnybrook and Women’s, University of Toronto, Toronto, ON, Canada
| | - K. I. Pritchard
- Jewish General Hospital, Montreal, PQ, Canada; National Cancer Institute of Canada Clinical Trial, Kingston, ON, Canada; Sunnybrook and Women’s, University of Toronto, Toronto, ON, Canada
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Wilkening RR, Ratcliffe RW, Fried AK, Meng D, Sun W, Colwell L, Lambert S, Greenlee M, Nilsson S, Thorsell A, Mojena M, Tudela C, Frisch K, Chan W, Birzin ET, Rohrer SP, Hammond ML. Estrogen receptor beta-subtype selective tetrahydrofluorenones: use of a fused pyrazole as a phenol bioisostere. Bioorg Med Chem Lett 2006; 16:3896-901. [PMID: 16730987 DOI: 10.1016/j.bmcl.2006.05.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [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: 03/30/2006] [Accepted: 05/12/2006] [Indexed: 11/26/2022]
Abstract
Synthesis of a series of fused pyrazole tetrahydrofluorenone analogs which are potent, ERbeta subtype selective ligands is described. Analogs possessing subnanomolar ERbeta binding, greater than 100-fold ERbeta-selectivity, and oral bioavailability are reported.
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Affiliation(s)
- R R Wilkening
- Department of Medicinal Chemistry, Merck Research Laboratories, PO Box 2000, 800-B116 Rahway, NJ 07065, USA.
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Davidson MG, Jones MD, Meng D, O'Hara CT. The synthesis and characterisation of a magnesium amine bis(phenolate) complex as a potential initiator for the ring-opening polymerisation of cyclic esters. Main Group Chemistry 2006. [DOI: 10.1080/10241220600746483] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xiao B, Guo J, Lou Y, Meng D, Zhao W, Zhang L, Yan C, Wang D. Inhibition of growth and increase of alkaline phosphatase activity in cultured human oral cancer cells by all-trans retinoic acid. Int J Oral Maxillofac Surg 2006; 35:643-8. [PMID: 16497480 DOI: 10.1016/j.ijom.2006.01.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 11/25/2004] [Revised: 07/21/2005] [Accepted: 01/11/2006] [Indexed: 10/25/2022]
Abstract
In this study, the effects of all-trans retinoic acid (ATRA) on human oral cancer cells with regard to cell growth, the cell cycle, and alkaline phosphatase (ALP) activity were evaluated. Human oral cancer KB cells were treated with various concentrations of ATRA, and cell growth was then determined using the MTT viability assay. The cell-cycle distribution and ALP activity were analysed using a flow cytometer and chemical analyser, respectively. The KB cells were inhibited by ATRA at concentrations of 1-16 microM (1 microM, P<0.05; 2 microM, P<0.01; 4, 8 and 16 microM, P<0.001) in a dose-dependent manner. ATRA arrested KB cells in the G0/G1 phase. The ALP activity in KB cells was increased by ATRA. This is one of the first studies to focus on the expression of ALP in human head-and-neck carcinoma cells treated with retinoids. These findings suggest that the anti-tumour effects of ATRA on human oral cancer are associated with G0/G1 phase arrest and an increase in ALP activity.
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Affiliation(s)
- B Xiao
- School of Medicine, Ningbo University, Ningbo 315211, China
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Meng D, von Rosen D. Bonferroni-Type Bounds of Degree Three. COMMUN STAT-SIMUL C 2003. [DOI: 10.1081/sac-120017865] [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: 11/03/2022]
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Shi F, Zhou J, Meng D. [Curative effect of soybean lecithin on cerebral infarction]. Zhonghua Yi Xue Za Zhi 2001; 81:1301-3. [PMID: 16200721] [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: 05/04/2023]
Abstract
OBJECTIVE To investigate the clinical curative effect of soybean lecithin on cerebral infarction. METHODS 542 patients with cerebral infarction within 48 h after the onset with the nervous function defect scores of 31-35 were divided into 3 groups: basic treatment group, 60 cases, with conventional treatment; citicoline group, 122 patients, with conventional treatment and citicoline; and soybean lecithin group, 360 patients, with conventional treatment and soybean lecithin 10 g tid. For all patients, treatment began sometime within 48 hours after the onset. The treatment course lasted 28 days. RESULTS When the course was over, the infarct volumes in basic group citicoline group, and soybean lecithin group, were 7.6 cm3 +/- 2.9 cm3, 7.3 cm3 +/- 3.1 cm3, and 6.4 cm3 +/- 2.7 cm3 respectively (F = 7.371, P = 0.0007). The basic group and citicoline group being compared with the soybean group by Dunnett test, t = 4.387 and 3.969 respectively, P < 0.01. The nervous function defect integral in the 3 groups decreased 14.2 +/- 10.93, 15.0 +/- 9.0, and 18.5 +/- 10.9 respectively. Two-way analysis of variance of drug kind and beginning time of treatment showed the value of F in drugs as 6.250, P = 0.0021, and value of F in times as 0.9417, P = 0.4201. In the order of death,deterioration, no improvement, improvement, significant improvement, and recovery, the Ridit values for the comprehensive curative effect in the 3 groups were 0.4003, 0.4118, and 0.54 5 respectively; chi2 = 27.89, P < 0.001. CONCLUSION Soybean lecithin is effective in treatment of acute cerebral infarction. The mechanism may be that soybean lecithin lowers the decrease of brain phospholipid content in brain ischemia.
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Affiliation(s)
- F Shi
- Department of Neurology, Genaral Hospital of Shengyang Military Command, Shengyang, China
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Martello LA, McDaid HM, Regl DL, Yang CP, Meng D, Pettus TR, Kaufman MD, Arimoto H, Danishefsky SJ, Smith AB, Horwitz SB. Taxol and discodermolide represent a synergistic drug combination in human carcinoma cell lines. Clin Cancer Res 2000; 6:1978-87. [PMID: 10815923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Recently, three natural products have been identified, the epothilones, eleutherobin, and discodermolide, whose mechanism of action is similar to that of Taxol in that they stabilize microtubules and block cells in the mitotic phase of the cell cycle. In this report, we have compared and contrasted the effects of these new agents in Taxol-sensitive and -resistant cell lines. We also have taken advantage of a human lung carcinoma cell line, A549-T12, that was isolated as a Taxol-resistant cell line and found to require low concentrations of Taxol (2-6 nM) for normal cell division. This study then examined the ability of these new compounds to substitute for Taxol in sustaining the growth of A549-T12 cells. Immunofluorescence and flow cytometry have both indicated that the epothilones and eleutherobin, but not discodermolide, can substitute for Taxol in this Taxol-dependent cell line. In A549-T12 cells, the presence of Taxol significantly amplified the cytotoxicity of discodermolide, and this phenomenon was not observed in combinations of Taxol with either the epothilones or eleutherobin. Median effect analysis using the combination index method revealed a schedule-independent synergistic interaction between Taxol and discodermolide in four human carcinoma cell lines, an effect that was not observed between Taxol and epothilone B. Flow cytometry revealed that concurrent exposure of A549 cells to Taxol and discodermolide at doses that do not induce mitotic arrest caused an increase in the hypodiploid population, thereby indicating that a possible mechanism for the observed synergy is the potentiation of apoptosis. Our results suggest that Taxol and discodermolide may constitute a promising chemotherapeutic combination.
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Affiliation(s)
- L A Martello
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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Abstract
Sometimes a surprise can occur in a total synthesis. The preparative investigation of the title compound CP-263,114 and of CP-225,917 (1)-both natural products that were first isolated in 1997 by Pfizer-has shown that CP compounds of the 7R series can be converted into the 7S series (for example, 2); (7S)-CP-263,114 is itself apparently a fermentation product.
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Affiliation(s)
- D Meng
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10021 (USA)
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