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Zheng T, Wang P, Hu B, Bao T, Qin X. Mass variations and transfer process of shrimp farming pollutants in aquaculture drainage systems: Effects of DOM features and physicochemical properties. J Hazard Mater 2024; 469:133978. [PMID: 38461667 DOI: 10.1016/j.jhazmat.2024.133978] [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] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/29/2024] [Accepted: 03/05/2024] [Indexed: 03/12/2024]
Abstract
The expansion of aquaculture produces increasing pollutant loads, necessitating the use of drainage systems to discharge wastewater into surface water. To assess the mass variations and transfer process of aquaculture wastewater, an entire aquaculture drainage investigation lasting for 48 h was conducted, focusing on the nutrients, heavy metals, dissolved organic matter (DOM), and physicochemical properties of drainage in a commercial shrimp farm. The findings revealed that early drainage produced more heavy metals, total nitrogen (TN), dissolved organic nitrogen (DON), and feed-like proteins from aquaculture floating feed and additives, whereas late drainage produced more PO43--P and total dissolved phosphorus (TP). A few pollutants, including DON, Cu, and feed-like proteins, were effectively removed, whereas the contents of TN, dissolved inorganic nitrogen, and Zn increased in the multi-level aquaculture drainage system. Limited dilution indicated that in-stream transfer was the main process shaping pollutant concentrations within the drainage system. In the lower ditches, NO3--N, heavy metals, and feed-like proteins exhibited evident in-stream attenuation, while TN and NH4+-N underwent significant in-stream enrichment processes, especially in ditch C, with the transfer coefficient values (vf) of -1.74E-5 and -2.04E-5. This indicates that traditional aquaculture drainage systems serve as nitrogen sinks, rather than efficient nutrient purge facilitators. Notably, DOM was identified as a more influential factor in shaping the in-stream transfer process in aquaculture drainage systems, with an interpretation rate 40.79% higher than that of the physiochemical properties. Consequently, it is necessary to eliminate the obstacles posed by DOM to pollutant absorption and net zero emissions in aquaculture drainage systems in the future. ENVIRONMENTAL IMPLICATIONS: Nutrients, heavy metals, and dissolved organic matter are hazardous pollutants originating from high-density aquaculture. As the sole conduit to natural waters, aquaculture drainage systems have pivotal functions in receiving and purifying wastewater, in which the in-stream transfer process is affected by ambient conditions. This field study investigated the spatial variations, stage distinctions, effects of physicochemical properties, and dissolved organic matter (DOM) features. This finding suggests that the aquaculture drainage system as a nitrogen sink and DOM source. While the DOM is the key factor in shaping the in-stream transfer process, and obstacles for pollutant elimination. This study helps in understanding the fate of aquaculture pollutants and reveals the drawbacks of traditional aquaculture drainage systems.
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Affiliation(s)
- Tianming Zheng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
| | - Bin Hu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Tianli Bao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Xingmin Qin
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
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Huang Y, Bao T, Zhang T, Ji G, Wang Y, Ling Z, Li W. Machine Learning Study of SNPs in Noncoding Regions to Predict Non-small Cell Lung Cancer Susceptibility. Clin Oncol (R Coll Radiol) 2023; 35:701-712. [PMID: 37689528 DOI: 10.1016/j.clon.2023.08.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 07/23/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023]
Abstract
Non-small cell lung cancer (NSCLC) is the most common pathological subtype of lung cancer. Both environmental and genetic factors have been reported to impact the lung cancer susceptibility. We conducted a genome-wide association study (GWAS) of 287 NSCLC patients and 467 healthy controls in a Chinese population using the Illumina Genome-Wide Asian Screening Array Chip on 712,095 SNPs (single nucleotide polymorphisms). Using logistic regression modeling, GWAS identified 17 new noncoding region SNP loci associated with the NSCLC risk, and the top three (rs80040741, rs9568547, rs6010259) were under a stringent p-value (<3.02e-6). Notably, rs80040741 and rs6010259 were annotated from the intron regions of MUC3A and MLC1, respectively. Together with another five SNPs previously reported in Chinese NSCLC patients and another four covariates (e.g., smoking status, age, low dose CT screening, sex), a predictive model by machine learning methods can separate the NSCLC from healthy controls with an accuracy of 86%. This is the first time to apply machine learning method in predicting the NSCLC susceptibility using both genetic and clinical characteristics. Our findings will provide a promising method in NSCLC early diagnosis and improve our understanding of applying machine learning methods in precision medicine.
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Affiliation(s)
- Y Huang
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - T Bao
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - T Zhang
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - G Ji
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Y Wang
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Z Ling
- Chengdu Genepre Technology Co., LTD, Chengdu, Sichuan, China
| | - W Li
- Institute of Respiratory Healthy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Department of Respiratory and Critical Care Medicine, Institute of Respiratory Healthy, Precision Medicine Key Laboratory of Sichuan Province, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, Sichuan 610041, China; State Key Laboratory of Respiratory Health and Multimorbidity, Chengdu, Sichuan 610041, West China Hospital, China.
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Chen J, Liu G, Bao T, Bai T, Zhang E, Zhao J. [Biomechanical analysis of miniplate fixation systems in restorative laminoplasty for spinal canal reconstruction]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:331-339. [PMID: 37087576 PMCID: PMC10122743 DOI: 10.12122/j.issn.1673-4254.2023.03.01] [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: 04/24/2023]
Abstract
OBJECTIVE To investigate the biomechanical properties of H-shaped and L-shaped miniplate fixation systems (H-MFS and L-MFS, respectively) in restorative laminoplasty for spinal canal reconstruction (RL-SCR). METHODS Laminectomy was performed in a 3D printed L4 vertebral model followed by RL-SCR using H-MFS or L-MFS, and the biomechanical properties of the reconstructed models were evaluated using static and dynamic compression tests. Biomechanical analyses of RL-SCR were also conducted in finite element models of the L3-L5 vertebrae with normal assignment (NA), laminectomy, or fixation with H-MFS or L-MFS, and the range of motion (ROM) of L3-L4 and L4-L5 was evaluated. RESULTS In static compression test, the sustained yield load, compression stiffness, yield displacement and axial displacement- axial load were all significantly greater in H-MFS group (P < 0.05). Door closing, lamina collapse and plate breakage occurred in all the models in L-MFS group, and only some models in H-MFS group showed plate cracks and screw loosening. In dynamic compression tests, the peak load in H-MFS group reached 873 N (which was 95% of the average yield load in static compression), significantly greater than that in L-MFS group (P < 0.05). The ultimate load in L-MFS group was only 46.59% of that in H-MFS group (P>0.05). In finite element analysis, the ROM of the L3-L4 and L4- L5 segments were significantly smaller in NA, H-MFS and L-MFS groups than in laminectomy group. Compared with NA group, H-MFS group showed a greater ROM during extension, and L-MFS group showed greater ROM in flexion, extension, bending, and rotation; The overall ROM of the vertebral segments decreased in the order of laminectomy group, L-MFS group, H-MFS group, and NA group. CONCLUSION Laminectomy causes structural destruction of the posterior column of the spine to affect its biomechanical stability. RL-SCR can effectively maintain the biomechanical stability of the spine, and H-MFS is superior to L-MFS in maintaining the integrity and biomechanical properties of the reconstructed spinal canal.
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Affiliation(s)
- J Chen
- Department of Orthopedics, Jinling Hospital of Nanjing Medical University, Nanjing 210002, China
| | - G Liu
- Department of Orthopedics, Jinling Hospital of Nanjing Medical University, Nanjing 210002, China
| | - T Bao
- Department of Orthopedics, Jinling Hospital of Nanjing Medical University, Nanjing 210002, China
| | - T Bai
- Department of Orthopedics, Jinling Hospital of Nanjing Medical University, Nanjing 210002, China
| | - E Zhang
- Xiamen Medical Device Testing and Research Co., Ltd, Xiamen 361022, China
| | - J Zhao
- Department of Orthopedics, Jinling Hospital of Nanjing Medical University, Nanjing 210002, China
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Bao T, Wang P, Hu B, Wang X, Qian J. Mobilization of colloids during sediment resuspension and its effect on the release of heavy metals and dissolved organic matter. Sci Total Environ 2023; 861:160678. [PMID: 36481153 DOI: 10.1016/j.scitotenv.2022.160678] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 11/27/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Natural colloids are important in mobilizing pollutants in aquatic environments. This study investigated the mobilization and aggregation of natural colloids during the sediment resuspension and re-sedimentation processes using nanoparticle tracking analysis. The metals and organic matter in overlying water were divided and examined in dissolved (<0.45 μm), colloidal (3 kDa - 0.45 μm), and truly dissolved (<3 kDa) forms. Excitation emission matrix-parallel factor analysis (EEM-PARAFAC) was used to characterize the dissolved organic matter (DOM). In overlying water, most natural colloids were < 200 nm before resuspension. An evident mobilization of colloids and an increase in colloid size were observed during resuspension. The formation of particles (>0.45 μm) and decreases of small colloids (<200 nm) indicated that resuspension promoted the aggregation of colloids. Mobilization of colloids was accompanied by increases in concentrations of Fe, Al, and organic carbon in colloidal fractions, which could be related to the formation of mineral-organic complexes under an oxic environment. The release of DOM from sediments mainly contributed to the truly dissolved humic-like fraction, and colloidal organic carbon accounted for, on average, 20 % of the total dissolved organic carbon (DOC). Fe and Al had the highest colloidal proportions as they are major compositions of inorganic colloids. Substantial removal of dissolved Al, Fe, Pb, and Zn occurred when colloids aggregated in the overlying water. Although the adsorption of suspended particles may also decrease the concentrations of dissolved metals, the increased proportions of colloidal metals indicated a possible role of colloids in this process. These findings provide insight into the behavior of colloids during the resuspension process and indicate that the aggregation of colloids could promote the removal of dissolved matter.
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Affiliation(s)
- Tianli Bao
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, China
| | - Peifang Wang
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, China.
| | - Bin Hu
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, China
| | - Xun Wang
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, China
| | - Jin Qian
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, China
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Abstract
Abstract
Acupuncture is a Traditional Chinese Medicine technique that involves inserting and manipulating filiform needles into specific points on the body to alleviate symptoms. Although its mechanisms are not fully established, acupuncture appears to interact with and modulate the functioning of nerves, neurotransmitters, and neurohormones. Acupuncture has been used as a complementary therapy to treat a wide range of conditions experienced by breast cancer survivors. In this education session, I will discuss the use of acupuncture to reduce breast cancer treatment-related toxicities such as chemotherapy-induced nausea, vomiting, peripheral neuropathy, and cognitive-impairment; insomnia; hot flashes; and aromatase inhibitor-associated arthralgias. I will start by discussing the definition and mechanisms of acupuncture. I will then share clinical evidence and ongoing trials supporting and investigating the use of acupuncture for these toxicities, and end with a summary of my recommendations.
Citation Format: T Bao. Acupuncture [abstract]. In: Proceedings of the 2021 San Antonio Breast Cancer Symposium; 2021 Dec 7-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2022;82(4 Suppl):Abstract nr ES4-1.
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Affiliation(s)
- T Bao
- Memorial Sloan Kettering Cancer Center, New York, NY
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Hu B, Wang P, Wang C, Bao T. Photogeochemistry of particulate organic matter in aquatic systems: A review. Sci Total Environ 2022; 806:150467. [PMID: 34592285 DOI: 10.1016/j.scitotenv.2021.150467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Photochemical transformation of natural organic matter in aquatic environments strongly impacts the environmental behaviors of carbon, nutrients, and pollutants by affecting their solubility, toxicity, bioavailability, and mobility. However, the role of particulate organic matter (POM) in environmental photogeochemistry has received much less attention than that of dissolved organic matter (DOM). In this study, a systematic overview was conducted to summarize the photodissolution and photoflocculation of POM in aquatic systems. The photodissolution of various POM, such as resuspended sediments and algal detritus, could be a potential and important source of DOM in the overlying waters, and these photoreleased DOM were dominated by humic-like components. The photogeochemistry of POM is thought to proceed via direct photochemical reactions and reactive radical-dominated indirect processes. Photodissolution can modify the bioavailability of organic matter and influence the biogeochemical cycling of nutrients, heavy metals, and organic pollutants. In addition, the photo-induced flocculation of DOM to POM could also influence the transport and transformation of organic matter and its associated pollutants. The photochemistry of POM can be significantly influenced by several environmental factors, including irradiation wavelength and intensity, organic matter properties, and radical oxygen species. POM photogeochemistry is one of the most important components of the global cycling of natural organic matter. Further studies regarding photogeochemistry should be conducted to overcome the potential problems arising from the concurrent photodegradation of organic matter and to further develop more filed investigations and analytical methods.
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Affiliation(s)
- Bin Hu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Tianli Bao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China
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Hu B, Wang P, Bao T, Qian J, Wang X. Mechanisms of photochemical release of dissolved organic matter and iron from resuspended sediments. J Environ Sci (China) 2021; 104:288-295. [PMID: 33985732 DOI: 10.1016/j.jes.2020.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/01/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
Photochemical reactions can alter the transformation of sedimentary organic matter into dissolved organic matter (DOM) and affect its ultimate fate in water ecosystems. In the present study, the photorelease of DOM and Fe from resuspended lake sediments was investigated under different O2 and NO3- concentration conditions to study the mechanisms of DOM and Fe photorelease. The amount of photoreleased Fe, which ranged from 0.22 to 0.70 μmol/L, was significantly linearly correlated with the amount of photoreleased DOM. O2 and NO3- could promote the photochemical release of DOM and Fe, especially during the initial 4 h irradiation. In general, the order of the photorelease rates of DOM and Fe under different conditions was as follows: NO3-/aerobic > aerobic ≈ NO3-/anaerobic > anaerobic. The photorelease rates of DOM and Fe were higher for the initial 4 hr irradiation than these for the subsequent 8 hr irradiation. The photorelease of DOM and Fe is thought to proceed via direct photodissolution and indirect processes. The relative contributions of indirect processes (>60%) was much greater than that of direct photodissolution (<40%). The photoproduced H2O2 under aerobic and anaerobic conditions indicated that hydroxyl radicals (•OH) are involved in the photorelease of DOM. Using •OH scavengers, it was found that 38.7%, 53.7%, and 77.6% of photoreleased DOM was attributed to •OH under anaerobic, aerobic, and NO3-/aerobic conditions, respectively. Our findings provide insights for understanding the mechanisms and the important role of •OH in the DOM and Fe photorelease from resuspended sediments.
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Affiliation(s)
- Bin Hu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 201198, China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 201198, China.
| | - Tianli Bao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 201198, China
| | - Jin Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 201198, China
| | - Xun Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 201198, China
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Bondar G, Silacheva I, Bao T, Deshmukh S, Kulkarni N, Nakade T, Grogan T, Elashoff D, Deng M. Independent Validation of a Genomic Heart Failure Survival Prediction Algorithm. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.661] [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: 10/21/2022] Open
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Hu B, Wang P, Bao T, Shi Y. The photochemical release of dissolved organic matter from resuspended sediments: Insights from fluorescence spectroscopy. Chemosphere 2020; 257:127161. [PMID: 32526465 DOI: 10.1016/j.chemosphere.2020.127161] [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] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 04/23/2020] [Accepted: 05/20/2020] [Indexed: 06/11/2023]
Abstract
Sediments exposed to sunlight can serve as an important source of dissolved organic carbon (DOC) and nutrients to overlying waters. However, the photochemical release processes of dissolved organic matter (DOM) from resuspended sediments and the characteristics of photoreleased DOM are not fully understood. In this study, excitation-emission matrix fluorescence combined with parallel factor analysis (EEMs-PARAFAC) was used to study the photochemical release of DOM qualitatively and quantitatively. The EEMs-PARAFAC demonstrated that the photoreleased DOM is dominated by humic-like substances, and the photorelease process could be consist of the photoproduction and photodegradation of DOM. The concurrent photodegradation may result in the underestimation of photoreleased DOM. Moreover, the significant increases in DOC content and fluorescence intensity of humic-like components along with increasing nitrate and ferric ion indicated that nitrate and ferric ion could facilitate the photoproduction of DOM through the photochemical produced hydroxyl radical. However, the decreases in DOC and fluorescence intensity were also observed at high concentration of nitrate and ferric ion, owing to the photodegradation of DOM by redundant hydroxyl radical. All of these results suggest that EEMs-PARAFAC is an effective and sensitive analytical technique for evaluating DOM photoreleased from suspended lake sediments and previous studies may underestimate photochemical release of DOM from sediments due to the overlook of the subsequently photodegradation of these released DOM. Thus, the photochemical release of DOM and its associated pollutants from suspended particles in shallow and eutrophic lakes should be more significant then should be paid more attention.
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Affiliation(s)
- Bin Hu
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Peifang Wang
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China.
| | - Tianli Bao
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Yue Shi
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
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Le VC, Jones MLH, Kinnaird C, Barone VJ, Bao T, Sienko KH. Standing balance of vehicle passengers: The effect of vehicle motion, task performance on post-drive balance. Gait Posture 2020; 82:189-195. [PMID: 32937271 DOI: 10.1016/j.gaitpost.2020.08.123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 08/13/2020] [Accepted: 08/19/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Motion platforms and driving simulators have been shown to contribute to motion sickness and a short-term increase in standing postural sway. However, no studies to date have investigated how the motion of a passenger vehicle and the performance of a task during a drive on a closed test track affects post-drive standing balance. RESEARCH QUESTIONS What are the effects of (1) a continuous, scripted drive on a closed test track, and (2) the performance of a handheld tablet-based task during the scripted drive, on post-drive standing balance? METHODS Fifty adults (23 males, 27 females; 40.0 ± 20.6 yr) rode in the front passenger seat of a midsized sedan on a scripted drive. Participants were assigned to one of the acceleration levels (Low, Moderate) and completed both Task and No-Task test conditions, involving a visual-based task on a handheld tablet device. Before and after each scripted drive, participants completed two standing balance exercises: 1) feet tandem, eyes open, on firm support, and 2) feet together, eyes closed, on foam support. An inertial measurement unit (IMU) captured estimates of postural trunk sway. Root-mean-square (RMS) of angular position and velocity in the anteroposterior (A/P) and mediolateral (M/L) directions, and elliptical fit and path length of sway trajectory were computed. A nonparametric analysis was performed on the balance metrics. RESULTS Exposure to a scripted drive in a vehicle affected participants' postural sway, especially after using a handheld device during the drive. M/L RMS sway velocity and path length increased for both exercises following the scripted drive with task. Additionally, M/L RMS sway increased for the more challenging balance exercise, during which participants stood with feet together on foam support with eyes closed. SIGNIFICANCE This study is the first to explore balance following a scripted drive on a closed test track. Changes in post-drive balance introduces potential risks to vehicle passengers; concurrent performance of a task on a handheld device further increases the likelihood that post-drive balance will be negatively affected.
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Affiliation(s)
- V C Le
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward St., Ann Arbor, 48109, USA
| | - M L H Jones
- University of Michigan Transportation Research Institute, University of Michigan, 2901 Baxter Rd, Ann Arbor, MI, 48109, USA
| | - C Kinnaird
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward St., Ann Arbor, 48109, USA
| | - V J Barone
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward St., Ann Arbor, 48109, USA
| | - T Bao
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward St., Ann Arbor, 48109, USA
| | - K H Sienko
- Department of Mechanical Engineering, University of Michigan, 2350 Hayward St., Ann Arbor, 48109, USA.
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Dai FQ, Guo W, Deng B, Tao SL, Jiang B, Wang YJ, Cheng N, Wu XL, Wang ZH, Bao T, Tan QY. [Suggestions for thoracic surgery clinical practice in non-epidemic area of 2019 coronavirus disease]. Zhonghua Wai Ke Za Zhi 2020; 58:273-277. [PMID: 32241056 DOI: 10.3760/cma.j.cn112139-20200219-00100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In this paper, the mechanism of destroying human alveolar epithelial cells and pulmonary tissue by 2019 novel coronavirus (2019-nCoV) was discussed firstly. There may be multiple mechanisms including killing directly the target cells and hyperinflammatory responses. Secondly, the clinical features, CT imaging, short-term and long-term pulmonary function damage of the 2019 coronavirus disease (COVID-19) was analyzed. Finally, some suggestions for thoracic surgery clinical practice in non-epidemic area during and after the epidemic of COVID-19 were provided, to help all the thoracic surgery patients receive active and effective treatment.
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Affiliation(s)
- F Q Dai
- Department of Thoracic Surgery, Daping Hospital, Army Medical University, Chongqing 400042, China
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Bondar G, Bao T, Kurani M, Oh E, Patel K, Shah K, Nelson S, Savvidou S, Kupiec-Weglinsky S, Fadly G, Higuchi E, Silacheva I, LaPierre N, Li Z, Genewick K, Yu S, Grogan T, Elashoff D, Wang W, Ping P, Rossetti M, Reed E, Li X, Deng M. Exercise-Induced Genomic and Transcriptomic Changes in Heart Failure. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.009] [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: 10/24/2022] Open
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Bao T, Wang P, Hu B, Shi Y. Investigation on the effects of sediment resuspension on the binding of colloidal organic matter to copper using fluorescence techniques. Chemosphere 2019; 236:124312. [PMID: 31545181 DOI: 10.1016/j.chemosphere.2019.07.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 07/03/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
Colloidal organic matter (COM), an important component of dissolved organic matter (DOM), plays a significant role in the transport and cycling process of the heavy metals. In this study, COM was fractionated from DOM using 0.2 μm, 100 kDa, and 2 kDa ultrafiltration membranes and the fluorescence spectra of the COM fractions were obtained. Excitation and emission matrix-parallel factor analysis and two-dimensional fluorescence correlation spectroscopy were applied to investigate the effect of sediment resuspension on the heavy metal binding characteristics of COM fractions with different molecular weights. Compared with the DOM fractions, COM exhibited stronger binding affinities and more binding sites for Cu(II), which was attributed to the significant binding effects of the components of COM. Our results suggested that the protein-like components were mainly responsible for binding heavy metals in the high-molecular-weight fraction (>100 kDa), whereas the humic-like components were responsible in the low-molecular-weight fraction (<100 kDa). Furthermore, sediment resuspension significantly influenced the composition and heavy metal binding characteristics of COM. Following resuspension, the binding affinity of COM decreased significantly, which might be attributed to the binding competition from inorganic colloids. Thus, COM plays an important role in the binding and transportation behavior of heavy metals, which is an important consideration in shallow lake ecosystems.
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Affiliation(s)
- Tianli Bao
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, People's Republic of China; College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, People's Republic of China; College of Environment, Hohai University, Nanjing, 210098, People's Republic of China.
| | - Bin Hu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, People's Republic of China; College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
| | - Yue Shi
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing, 210098, People's Republic of China; College of Environment, Hohai University, Nanjing, 210098, People's Republic of China
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Bondar G, Bao T, Kurani M, Bhaskar D, Le A, Dod R, Khachatoorian Y, Aliyari A, Higuchi E, Oh E, Patel K, Cadeiras M, Schaenman J, Masukawa L, Kupiec-Weglinski S, Groysberg V, Bakir M, Depasquale E, Kamath M, Liem D, Meltzer J, Kwon M, Rossetti M, Elashoff D, Li X, Reed E, Ping P, Deng M. Genomic Prediction of One Year Survival Status Related to Functional Recovery Potential in Advanced Heart Failure Patients Undergoing Mechanical Circulatory Support. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.137] [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: 11/26/2022] Open
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15
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Hu B, Wang P, Wang C, Qian J, Bao T, Shi Y. Investigating spectroscopic and copper-binding characteristics of organic matter derived from sediments and suspended particles using EEM-PARAFAC combined with two-dimensional fluorescence/FTIR correlation analyses. Chemosphere 2019; 219:45-53. [PMID: 30528972 DOI: 10.1016/j.chemosphere.2018.11.113] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/05/2018] [Accepted: 11/17/2018] [Indexed: 06/09/2023]
Abstract
Different environmental dynamics of sediment organic matter (SOM) and suspended particulate organic matter (SPOM) result in great disparities in characteristics and subsequent interactions with heavy metals. In this study, sediments and suspended particles were collected from two large and shallow lakes (Taihu and Hongze Lake) to study the difference in the characteristics and copper binding properties between SOM and SPOM through spectroscopy method. Our results showed that SPOM in Taihu Lake was dominated by autochthonous tyrosine-like substance and SOM was dominated by terrestrial humic-like substance, whereas SPOM in Hongze Lake was dominated by terrestrial humic-like substances. Furthermore, dissolved organic matter (DOM) in Taihu and Hongze Lake was controlled by autochthonous protein and terrestrial humic substances, respectively. Comparison of SPOM between these two lakes indicated that various organic matter sources could be responsible for the organic matter characteristics in suspended particles. Meanwhile, relatively higher binding affinities and more binding sites were observed for SPOM in both two lakes compared to SOM through two-dimensional correlation spectroscopy (2D-COS) analysis of synchronous fluorescence spectra. Moreover, 2D-COS analysis of FTIR spectra revealed that hydrophobic groups (i.e., phenolic groups) had higher binding affinity than hydrophilic groups (i.e., polysaccharide groups) for both SOM and SPOM. Our results provide a new angle for understanding the suspended particles in shallow lakes, which might play a more important role in the environmental behaviors of heavy metals, than has been previously thought.
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Affiliation(s)
- Bin Hu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, China; College of Environment, Hohai University, Nanjing 210098, China.
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Jin Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Tianli Bao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Yue Shi
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, China; College of Environment, Hohai University, Nanjing 210098, China
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Zhi WI, Leeolou MC, Piulson L, Chen P, Patterson C, Paul T, Patil S, Mao JJ, Bao T. Abstract OT1-08-01: A pilot randomized usual care controlled study of yoga for persistent chemotherapy-induced peripheral neuropathy (CIPN) in breast and gynecological cancer survivors. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-ot1-08-01] [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: CIPN is a common, painful, and debilitating side effect of many standard chemotherapy regimens. Patients with CIPN typically experience paresthesia (tingling, numbness), pain, and muscle weakness, and may exhibit significant functional decline and diminished quality of life. Our prior study showed that more than half of breast cancer survivors experience persistent CIPN up to a mean duration of 5.6 years and that this symptom is associated with a doubled fall risk. There is an urgent need to identify nonpharmacological approaches to reduce CIPN symptoms and improve cancer survivors' functional outcomes. Yoga is a mind-body modality that includes stretching, flexibility, and balance training; however, little is known about its effects on symptoms and functional outcomes among cancer survivors with CIPN.
Trial Design: We are conducting a two-arm pilot randomized usual care controlled trial in breast and gynecological cancer survivors at Memorial Sloan Kettering Cancer Center (MSK), New York, NY. Eligible subjects in the intervention arm receive one-hour Hatha Yoga classes taught twice weekly for eight weeks, and practice home-based yoga for a total of 12 weeks. Subjects in the wait list control (WLC) arm continue usual care for 12 weeks, followed by eight weeks of yoga classes and home-based yoga.
Eligibility Criteria: 1) Patients with a primary diagnosis of stage I-III breast, ovarian, uterine, or endometrial cancer; 2) moderate to severe CIPN, defined by four or greater on a 0–10 Numeric Rating Scale (NRS); 3) completion of neurotoxic chemotherapy at least three months prior; 4) no changes in anti-neuropathy medications within three months of enrollment; and 5) an ECOG performance status of 0–2.
Specific Aims: The primary endpoint is safety, feasibility, and NRS changes at eight weeks (end of treatment). The secondary endpoints include the Neuropathic Pain Scale (NPS) and Functional Assessment of Cancer Therapy/Gynecologic Oncology Group-Neurotoxicity (FACT/GOG-Ntx) at eight, 12, and 20 weeks.
Statistical Methods: We will accrue 40 patients to get 36 patients evaluable for the primary endpoint at eight weeks. Using an ANCOVA analysis with a sample size of 36, we will be able to detect an effect size of 00.58 standard deviations (SD) of NRS (moderate effect size) between yoga and WLC assuming a NRS correlation between pre- and post-yoga of 0.5 SD. If we assume a 10% dropout rate based on our recently completed trial, we will need to recruit 20 subjects per arm (total of 40) to fall within the precision noted in the sample size calculation. We recognize that the sample size calculation was based on detecting a moderate effect between yoga and WLC and may miss small but clinically meaningful effects that can be used to design a future trial that is sufficiently powered.
Present accrual and target accrual: 40 participants. We have accrued 25 participants as of June 2018 and anticipate accrual completion by October 2018.
Citation Format: Zhi WI, Leeolou MC, Piulson L, Chen P, Patterson C, Paul T, Patil S, Mao JJ, Bao T. A pilot randomized usual care controlled study of yoga for persistent chemotherapy-induced peripheral neuropathy (CIPN) in breast and gynecological cancer survivors [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT1-08-01.
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Affiliation(s)
- WI Zhi
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - MC Leeolou
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - L Piulson
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - P Chen
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - C Patterson
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - T Paul
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - S Patil
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - JJ Mao
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - T Bao
- Memorial Sloan Kettering Cancer Center, New York, NY
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Bao T, Kwon A, Piulson L, Chen P, Li Q, Patil S, Seidman A, Blinder V, Vahdat L, Zhi WI, Mao JJ. Abstract P1-11-15: Chemotherapy-induced peripheral neuropathy in breast cancer survivors: Comparison of objective and subjective measures. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-11-15] [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: Chemotherapy-induced peripheral neuropathy (CIPN) is a common, potentially debilitating, and dose-limiting side effect experienced by breast cancer survivors. CIPN encompasses symptoms such as pain, numbness, and tingling, which can be measured subjectively by patient-reported outcomes (PRO), or objectively by quantitative sensory testing (QST); however, little is known how QST correlates with symptom profiles measured by PRO.
Methods: We conducted a cross-sectional analysis using baseline data of two ongoing clinical trials of breast cancer survivors who experienced moderate to severe CIPN defined by pain, numbness, or tingling ratings of four or greater on a numeric rating scale (NRS) after chemotherapy completion for at least three months. PRO measures of CIPN symptoms included Neuropathic Pain Scale (NPS) and Functional Assessment of Cancer Therapy-Gynecologic Oncology Group/Neurotoxicity subscale (FACT/GOG-Ntx). QST included tactile threshold (TT) measured by Von Frey's filaments, and vibration threshold (VT) measured by biothesiometer. We ran a Spearman correlation to assess the relationship between the subjective measures (NPS and FACT/GOG-Ntx) and objective measures (TT and VT QST).
Results: We included 52 sets of baseline data on 50 unique patients; two patients were enrolled in both trials at different times. Mean age was 61 years (SD 10) and 66% were white. The mean NRS pain score was 3.9 (SD 2.8), numbness 5.7 (SD 2.2), and tingling 4.3 (SD 2.8) on a 0-10 scale. The mean NPS total score was 39.2 (SD 23.1) on a 0-100 scale, and FACT/GOG-Ntx was 26.2 (SD 6.8) on a 0-44 scale. High scores on NRS and NPS and low scores on FACT/GOG-Ntx signify more severe CIPN symptoms. See Table 1 for a summary of the correlation between two questions on FACT/GOG-Ntx on tingling/numbness in hands and feet, and NPS total score with QST. A moderate correlation was observed between FACT/GOG-Ntx and QST results, suggesting patient-reported hand and foot numbness or tingling is associated with decreased hand and foot tactile and vibration perception. NPS was positively correlated with tactile perception for the hand and foot, but not with vibration perception.
Table 1.Correlation between objective and subjective measures of CIPN Tactile QSTVibration QST HandFeetHandFeetFACT/GOG-Ntx-0.33 (P=0.018)-0.28 (P=0.045)-0.37 (P=0.008)-0.40 (P=0.0034)NPS0.34 (P=0.015)0.32 (P=0.022)0.22 (P=0.12)0.03 (P=0.81)
Conclusions: A mild to moderate correlation was observed between subjective and objective measurements of CIPN. As CIPN presents a diverse range of symptoms, better quantifying the subjective and objective measures of CIPN can help incorporate these tools in observational and intervention trials. Understanding the correlation between PRO and QST can help establish QST as a reliable objective measurement of CIPN symptoms, and enable targeted interventions to alleviate CIPN symptoms.
Citation Format: Bao T, Kwon A, Piulson L, Chen P, Li Q, Patil S, Seidman A, Blinder V, Vahdat L, Zhi WI, Mao JJ. Chemotherapy-induced peripheral neuropathy in breast cancer survivors: Comparison of objective and subjective measures [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-11-15.
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Affiliation(s)
- T Bao
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - A Kwon
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - L Piulson
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - P Chen
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Q Li
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - S Patil
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - A Seidman
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - V Blinder
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - L Vahdat
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - WI Zhi
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - JJ Mao
- Memorial Sloan Kettering Cancer Center, New York, NY
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18
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Bao T, Togashi R, Cadeiras M, Schaenman J, Masukawa L, Hai J, Chu D, Chang E, Kupiec-Weglinski S, Groysberg V, Le A, Dod R, Kahn C, Oh E, Do J, Lumintang C, Grogan T, Meltzer J, Kwon M, Rossetti M, Elashoff D, Reed E, Ping P, Bondar G, Deng M. Association between Multidimensional Molecular Biomarkers and Functional Recovery Potential in Advanced Heart Failure. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.737] [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: 10/17/2022] Open
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Masukawa L, Bao T, Dod R, Togashi R, Cadeiras M, Schaenman J, Hai J, Chu D, Chang E, Kupiec-Weglinski S, Groysberg V, Le A, Kahn C, Oh E, Do J, Lumintang C, Grogan T, Meltzer J, Kwon M, Rossetti M, Elashoff D, Reed E, Ping P, Bondar G, Deng M. Early Postoperative Organ Function Recovery Score and Long-term Survival in Advanced Heart Failure Patients Undergoing Mechanical Circulatory Support. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1211] [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: 10/17/2022] Open
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20
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Bondar G, Bao T, Manoharan R, Togashi R, Agrawal N, Ramachandrula S, Hai J, Chu D, Masukawa L, Cadeiras M, Schaenman J, Chang E, Le A, Dod R, Kahn C, Oh E, Do J, Lumintang C, Kupiec-Weglinski S, Groysberg V, Grogan T, Rossetti M, Elashoff D, Reed E, Ping P, Deng M. Systems Biological Identification of an Age-related Predictor of Functional Recovery Potential in Advanced Heart Failure. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1209] [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: 10/17/2022] Open
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21
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Bondar G, Cadeiras M, Wisniewski N, Esmaeili A, Godoy G, Maque J, Chang E, Bakir M, Kupiec-Weglinski S, Chu D, Bao T, Hai J, Yee R, Li A, Rai M, Tran D, Madrigal L, Togashi R, Ping P, Reed E, Deng M. Leukocyte Time-Dependent Biology and Outcomes in Advanced Heart Failure. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.486] [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: 11/29/2022] Open
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22
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Guo MK, Zhu JX, Han CM, Bao T, Yang D, Yu P, Duan YF, Fan FL, Zhang HG, Tian HJ. [Effect of inhibiting perivascular adhesion on intimal hyperplasia of the vein grafts in rabbits]. Zhonghua Yi Xue Za Zhi 2017; 97:703-708. [PMID: 28297834 DOI: 10.3760/cma.j.issn.0376-2491.2017.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of preventing perivascular adhesion with topical application of sodium hyaluronate on intimal hyperplasia of the vein grafts in rabbits. Methods: Twenty-four male New Zealand white rabbits, aged 5 months, were randomly divided into 2 groups: Group A and B (n=12 rabbits per group). Artery defect model was established by cutting about 1 cm artery from the middle part of the dissociated left common carotid artery. A section about 3 cm was cut from the right external jugular vein, and the harvested vein was inverted and end-to-end anastomosed to the artery defect. After anastomosis, the adventitia and two anastomosis of the grafted veins in group A was applied 0.2 ml sodium hyaluronate locally to, and corresponding site in Group B was served as a control, but with the sterile normal saline. The grafted veins were obtained 1, 2 and 4 weeks after operation, HE staining and Masson staining were preformed for histological changes of grafted vein wall, proliferating cell nuclear antigen (PCNA) and platelet-derived growth factor (PDGF) immunohistochemistry staining were conducted for proliferation and expression and distribution of PDGF of the grafted vein. Results: The macroscopic and histological observation showed that the perivascular adhesions in Group A were looser when compared with those in Group B. The thickness of the intima, the degree of intima hyperplasia of 2 groups at different time points were as follows: at 1 week after operation, group A[(25.5±3.9) μm, (1.2±0.1) ]and group B[(26.2±4.2)μm, (1.2±0.1)]; at 2 weeks after operation, group A[(44.3±2.5)μm, (1.2±0.1)]and group B[(51.0±3.8)μm, (1.4±0.0)]; at 4 weeks after operation, group A[(69.9±6.8)μm, (1.5±0.1)] and group B[(84.4±6.4)μm, (1.7±0.1)]. Group A was inferior to group B in terms of the above three parameters 2 and 4weeks after operation (P<0.05). Cell proliferation index of intima and that of media were as follows: at 1 week after operation, group A (7.4±2.2), (21.5±3.2) and group B (11.5±2.0), (28.6±4.5); at 2 weeks, group A (20.0±3.2), (35.8±3.4) and group B (26.8±4.1), ( 42.6±4.2); at 4 weeks, group A (11.4±2.0), (22.1±2.7) and group B (15.5±2.4, 28.6±3.9). Group A was inferior to group B in terms of cell proliferation index of intima and media 1, 2 and 4 weeks after operation (P<0.05). The percentage of PDGF-positive cells of intima, media and adventitia was as follows: at 1 week after operation, group A (7.7±1.6), (19.6±3.7), (2.5±1.5) and group B (7.6±2.4), (20.6±4.4), (10.3±2.3); at 2 weeks after operation, group A (11.4±2.6), (19.8±3.1), (12.9±3.3) and group B (19.5±3.5), ( 30.6±5.2), (30.5±5.8); at 4 weeks after operation, group A (6.2±1.9), ( 11.1±2.8), (10.2±2.4) and group B (10.5±2.0), (18.6±3.2), (26.5±3.8). Group A was inferior to group B in terms of the percentage of PDGF-positive cells of intima, media and adventitia 2 and 4 weeks after operation (P<0.05) and Group A was inferior to group B that of adventitia 1 week after operation (P<0.05). Conclusion: Preventing perivascular adhesion with topical application of sodium hyaluronate can inhibit intimal hyperplasia.
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Affiliation(s)
- M K Guo
- Orthopaedics Surgery, the 260th Hospital of PLA, Shijiazhuang 050041, China
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Mao JJ, Chambless DL, Chen J, Bao T, Brier MJ. Abstract P5-13-16: Arthralgia-associated aging perceptions predict adherence to aromatase inhibitors among women with breast cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p5-13-16] [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:Aromatase inhibitors (AIs) are associated with reduced risk of breast cancer recurrence, yet many women discontinue their treatment prematurely, often due to arthralgia. Empirically, breast cancer survivors who experience AI-associated arthralgia often report that they have aged quickly over a short period of time. Objective: We aimed to determine whether survivors with a heightened sense of aging due to arthralgia were more likely to non-adhere to their AI regimen. Methods: We conducted a prospective cohort study in an urban academic cancer center among post-menopausal women with hormone receptor positive breast cancer who were within the first two years of their aromatase inhibitor therapy. Perceptions of aging due to arthralgia were measured by the previously validated Penn Arthralgia Aging Scale. Non-adherence was defined as interrupting treatment or discontinuing the AI before the prescribed treatment length was over. Trained raters abstracted adherence data from medical charts. We performed Cox proportional hazards regression to evaluate the relationship between perceptions of aging due to arthralgia and time to non-adherence while adjusting for potential confounders. Results: Among 509 participants, most were White (81.2%) and had at least some college education (77.9%). The majority had been prescribed anastrozole (88.0%), followed by letrozole (9.0%), and exemestane (3.0%). During the follow up period, 144 (28.3%) did not adhere to the AIs as originally prescribed. In univariate analysis, women with a heightened sense of aging due to arthralgia were at more than twice the risk of non-adherence compared to women with low levels of aging perceptions (Hazard Ratio [HR], 2.20; 95% CI, 1.50 – 3.21; p < 0.001). After adjusting for arthralgia pain severity, depression, and AI type, aging perceptions remained a statistically significant predictor of adherence (HR, 1.71; 95% CI, 1.10-2.67; p = 0.02). Depression status also uniquely predicted non-adherence risk (HR, 1.63; 95% CI, 1.03 – 2.59; p = 0.04). Arthralgia pain severity, which predicted adherence in univariate analysis, was not a significant predictor in the final model (HR, 1.21; 95% CI, 0.84 – 1.75; p = .30). Conclusions: Breast cancer survivors on AIs who have a heightened sense of aging due to arthralgia are at greater risk of non-adhering to their AI regimen. Interventions are needed to help survivors reduce arthralgia and develop adaptive appraisals of their AI experience to achieve optimal adherence.
Citation Format: Mao JJ, Chambless DL, Chen J, Bao T, Brier MJ. Arthralgia-associated aging perceptions predict adherence to aromatase inhibitors among women with breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P5-13-16.
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Affiliation(s)
- JJ Mao
- Memorial Sloan-Kettering Cancer Center, New York, NY; University of Pennsylvania, Philadelphia, PA
| | - DL Chambless
- Memorial Sloan-Kettering Cancer Center, New York, NY; University of Pennsylvania, Philadelphia, PA
| | - J Chen
- Memorial Sloan-Kettering Cancer Center, New York, NY; University of Pennsylvania, Philadelphia, PA
| | - T Bao
- Memorial Sloan-Kettering Cancer Center, New York, NY; University of Pennsylvania, Philadelphia, PA
| | - MJ Brier
- Memorial Sloan-Kettering Cancer Center, New York, NY; University of Pennsylvania, Philadelphia, PA
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Bao T, Seluzicki C, Li Q, Mao J. Abstract P5-13-08: The perception of chronic pain among breast cancer survivors. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p5-13-08] [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
Introduction: Breast cancer treatments may result in acute pain that, if untreated or undertreated, may lead to chronic pain. Twenty to thirty percent of patients who undergo mastectomy experience post-mastectomy pain syndrome, and up to 50% of breast cancer survivors taking aromatase inhibitors (AI) report aromatase inhibitor associated arthralgia (AIAA). The rates, experiences, and risk factors of the effects of breast cancer treatment on breast cancer survivors' perceptions of chronic pain are not well defined.
Methods: We conducted a cross-sectional survey among postmenopausal, hormone receptor-positive, breast cancer survivors who were currently taking or had previously taken an AI. The main outcome variable was the patient's perception of living with chronic pain. Variables including breast cancer treatment, socioeconomic and clinical factors, symptom burden, pain (measured by the Brief Pain Inventory [BPI]), and pain-related coping (measured by the Pain Catastrophizing Scale [PCS]) were measured. Univariate and multivariate logistic analyses were performed to identify the risk factors associated with patients' perceptions of living with chronic pain.
Results: Among 561 participants, 62 (11.1%) reported that they perceived themselves as living with chronic pain prior to their breast cancer diagnosis and 172 (30.8%) reported living with chronic pain during the past 6 months at the time of the survey. Compared with patients who did not perceive chronic pain, patients with the perception of chronic pain had significantly higher pain severity (4.15±0.17 vs. 1.54±0.09) and interference (3.47±0.2 vs. 0.97±0.08); higher pain medication usage (percentage of patients taking at least one pain medication over the past 7 days: 85.47% vs. 57.36%); and higher levels of negative coping with pain, including rumination (4.08±0.31 vs. 2.28±0.16), magnification (2.27±0.2 vs. 1.15±0.08), and helplessness (4.63±0.37 vs. 1.64±0.13). Among participants, 369 (65.78%) reported taking at least one pain medication over the past 7 days. In a multivariate analysis, age (<56 or >70), higher BMI (>30), prior chemotherapy, currently experiencing AIAA, and the presence of chronic pain before cancer diagnosis were identified as risk factors associated with the perception of living with chronic pain.
Conclusion: One in three breast cancer survivors considered themselves to be living with chronic pain, and two-thirds developed such perceptions following their cancer diagnosis. Both chemotherapy and AI use were risk factors for perceptions of chronic pain. Those women who had chronic pain experienced greater pain severity, daily interference, and more negative coping. Better understanding of the risk factors and symptom burden associated with chronic pain perceptions among this population may allow for more targeted interventions to reduce chronic pain and its negative sequelae, including premature termination of AI treatment.
Citation Format: Bao T, Seluzicki C, Li Q, Mao J. The perception of chronic pain among breast cancer survivors [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P5-13-08.
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Affiliation(s)
- T Bao
- Memorial Sloan Kettering Cancer Center, New York, NY; Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - C Seluzicki
- Memorial Sloan Kettering Cancer Center, New York, NY; Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Q Li
- Memorial Sloan Kettering Cancer Center, New York, NY; Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - J Mao
- Memorial Sloan Kettering Cancer Center, New York, NY; Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
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Xu X, Zhang P, Shuai P, Chen RJ, Yan XL, Zhang YH, Wang M, Litvinov YA, Xu HS, Bao T, Chen XC, Chen H, Fu CY, Kubono S, Lam YH, Liu DW, Mao RS, Ma XW, Sun MZ, Tu XL, Xing YM, Yang JC, Yuan YJ, Zeng Q, Zhou X, Zhou XH, Zhan WL, Litvinov S, Blaum K, Audi G, Uesaka T, Yamaguchi Y, Yamaguchi T, Ozawa A, Sun BH, Sun Y, Dai AC, Xu FR. Identification of the Lowest T=2, J^{π}=0^{+} Isobaric Analog State in ^{52}Co and Its Impact on the Understanding of β-Decay Properties of ^{52}Ni. Phys Rev Lett 2016; 117:182503. [PMID: 27835000 DOI: 10.1103/physrevlett.117.182503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Indexed: 06/06/2023]
Abstract
Masses of ^{52g,52m}Co were measured for the first time with an accuracy of ∼10 keV, an unprecedented precision reached for short-lived nuclei in the isochronous mass spectrometry. Combining our results with the previous β-γ measurements of ^{52}Ni, the T=2, J^{π}=0^{+} isobaric analog state (IAS) in ^{52}Co was newly assigned, questioning the conventional identification of IASs from the β-delayed proton emissions. Using our energy of the IAS in ^{52}Co, the masses of the T=2 multiplet fit well into the isobaric multiplet mass equation. We find that the IAS in ^{52}Co decays predominantly via γ transitions while the proton emission is negligibly small. According to our large-scale shell model calculations, this phenomenon has been interpreted to be due to very low isospin mixing in the IAS.
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Affiliation(s)
- X Xu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - P Zhang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - P Shuai
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - R J Chen
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - X L Yan
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Y H Zhang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - M Wang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Yu A Litvinov
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - H S Xu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - T Bao
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - X C Chen
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - H Chen
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - C Y Fu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S Kubono
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Y H Lam
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - D W Liu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - R S Mao
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - X W Ma
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - M Z Sun
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X L Tu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Y M Xing
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - J C Yang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Y J Yuan
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Q Zeng
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Research Center for Hadron Physics, National Laboratory of Heavy Ion Accelerator Facility in Lanzhou and University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Zhou
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X H Zhou
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - W L Zhan
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - S Litvinov
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - G Audi
- CSNSM, Univ Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - T Uesaka
- RIKEN Nishina Center, RIKEN, Saitama 351-0198, Japan
| | - Y Yamaguchi
- RIKEN Nishina Center, RIKEN, Saitama 351-0198, Japan
| | - T Yamaguchi
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - A Ozawa
- Insititute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
| | - B H Sun
- School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, People's Republic of China
| | - Y Sun
- Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - A C Dai
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
| | - F R Xu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
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Zhao X, Zhang X, Rao Z, Bao T, Li X, Xu M, Yang T, Yang S. Identification and characterization of a novel 2,3-butanediol dehydrogenase/acetoin reductase from Corynebacterium crenatum SYPA5-5. Lett Appl Microbiol 2015; 61:573-9. [PMID: 26393961 DOI: 10.1111/lam.12495] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/10/2015] [Accepted: 09/13/2015] [Indexed: 11/28/2022]
Abstract
UNLABELLED Acetoin and 2,3-butanediol are widely used in the chemical and pharmaceutical industries. The enzyme, 2,3-butanediol dehydrogenase/acetoin reductase (2,3-BDH/AR), plays a significant role in the microbial production of acetoin and 2,3-butanediol by catalysing a reversible reaction between acetoin and 2,3-butanediol. To date, a 2,3-BDH has not been characterized from Corynebacterium crenatum. 2,3-BDH was cloned from Coryne. crenatum SYPA5-5 and expressed in Escherichia coli BL21. Sequence analysis suggested that the 2,3-BDH from Coryne. crenatum SYPA5-5 belongs to the short-chain dehydrogenase/reductase superfamily. Its maximum specific activity was obtained at 35°C, however, it became very unstable when the temperature was above 35°C. Its optimal pH was 4·0 for reduction reaction and 10·0 for oxidation reaction. The 2,3-BDH activity was increased to some extent by Ca(2+) , Mg(2+) , Zn(2+) and Mn(2+) ions. In particular, Ca(2+) induced about 1·5-fold increase. The value of kcat /Km for diacetyl and acetoin are higher than for 2,3-butanediol indicating that 2,3-BDH can easily reduce diacetyl or acetoin to 2,3-butanediol under lower pH conditions. The characteristics of 2,3-BDH from Coryne. crenatum SYPA5-5 will give guide to further studies for the production of acetoin and 2,3-butanediol with engineered Coryne. crenatum SYPA5-5. SIGNIFICANCE AND IMPACT OF THE STUDY Acetoin and 2,3-butanediol are commonly used as platform chemicals and widely used in pharmaceutical industries. 2,3-butanediol dehydrogenase/acetoin reductase (2,3-BDH/AR) plays a significant role in the microbial production of acetoin and 2,3-butanediol. In this study, 2,3-BDH was cloned from Corynebacterium crenatum SYPA5-5, was expressed in Escherichia coli BL21 and characterized with respect to the optimal temperature, pH, substrate specificity and kinetics. The results will guide further studies in Coryne. crenatum SYPA5-5 for the production of acetoin and 2,3-butanediol.
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Affiliation(s)
- X Zhao
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - X Zhang
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Z Rao
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - T Bao
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - X Li
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - M Xu
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - T Yang
- The Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - S Yang
- Department of Chemical Engineering, Ohio State University, Columbus, OH, USA
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Chumsri S, Tait N, Shetty J, Lewis J, Medeiros M, Bao T, Goloubeva O, Singh H, Sivasailam S, Sabnis G, Kazi A, Mann D, Kesmodel S, Brodie A, Tkaczuk K. Abstract OT3-2-11: A phase II study of letrozole and lapatinib followed by an addition of everolimus in postmenopausal women with advanced endocrine resistant breast cancer (BC). Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-ot3-2-11] [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: Several preclinical studies demonstrated that crosstalk between growth factor receptor pathways, particularly HER2, and ER signaling confers resistance to endocrine therapy (ET). There are emerging data showing the involvement of immune system and miRNA with endocrine resistance. EGF30008 trial showed a benefit of lapatinib in combination with letrozole, mainly in HER2-positive (HER+) metastatic BC (MBC) while a subset analysis of this trial showed that HER2-negative (HER2-) patients (pts) with acquired endocrine resistance may also benefit from this combination. Our preclinical study suggests that everolimus is synergistic with letrozole and lapatinib.
Trial Design: This is a single arm phase II study for postmenopausal women with hormone receptor-positive MBC progressing after aromatase inhibitor, tamoxifen, or fulvestrant. The total target accrual is 76 pts (38 HER2+ pts and 38 HER- pts). In the first phase of the study, pts will be treated with letrozole and lapatinib (1,500 mg daily). Upon disease progression, pts will enter the second phase where everolimus (5 mg daily) will be added to letrozole and the dose of lapatinib will be reduced to 1,250 mg daily. For correlative studies, peripheral blood samples will be serially collected to evaluate for serum HER2 extracellular domain (ECD), circulating miRNAs, PC cell-derived growth factor (GP88), immune regulatory cells including myeloid-derived suppressor cells, NK cells, and Treg cells. These parameters will be correlated with tumor response. In pts with accessible tumors, optional serial biopsies will be performed at baseline and upon progression in each phase of the study. The tumor tissue will be tested for total HER1, HER2, and HER2 expressions as well as HER2:HER2 homodimers, HER2:HER3 heterodimers, HER1:HER2 heterodimers, p95, and HER3/PI3K (p85 subunit) using VeraTag assay.
Statistical Method: The primary objective is to evaluate the clinical benefit rate (CBR: CR, PR, SD > 24 weeks) of the combination of letrozole and lapatinib as well as the combination of everolimus, letrozole, and lapatinib. This is a three-stage design which is an extension of the Simon's two-stage design. The sample size is based on the assumption that a CBR below 10% (null hypothesis) would indicate ineffective therapy and the statistical power is set at a higher CBR of 30% which we consider is plausible. Therefore, if 0 of the first 10 pts in each cohort have clinical benefit, the study will be closed; otherwise additional 8 pts will be enrolled. If ≤ 1 of the total 18 pts has clinical benefit, the study will be closed; otherwise an additional 9 pts will be enrolled. If ≤ 5 pts have clinical benefit the therapy is considered not promising; and if ≥ 6 pts of the total of 27 have clinical benefit, the therapy is considered worth pursuing. This design has ∼90% probability to accept the therapy for further trials if the true CBR is indeed at least 30% and 10% probability to accept it if the true clinical benefit is indeed below 10%.
To date, there are a total of 6 pts enrolled. Accrual is currently ongoing. Please contact ntait@umm.edu for further information.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr OT3-2-11.
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Affiliation(s)
- S Chumsri
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - N Tait
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - J Shetty
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - J Lewis
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - M Medeiros
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - T Bao
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - O Goloubeva
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - H Singh
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - S Sivasailam
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - G Sabnis
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - A Kazi
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - D Mann
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - S Kesmodel
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - A Brodie
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
| | - K Tkaczuk
- University of Maryland, Balitimore, MD; University of Maryland Oncology Associates, Glen Burnie, MD; Upper Chesapeake Hematology/Oncology, Bel Air, MD; Loyola University Maryland, Baltimore, MD
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Reese A, Kesmodel S, Bellavance E, Reese J, Campassi C, Tkaczuk K, Bao T, Chumsri S, Olson J, Feigenberg S. Marriage Is Associated With Choice of Mastectomy in Patients Eligible for Breast Conservation Therapy. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.577] [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: 10/26/2022]
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Awan M, Bellavance E, Kesmodel S, Ioffe O, Campassi C, Tkaczuk K, Chumsri S, Bao T, Feigenberg S. Can Breast MRI Select Patients for Treatment With Preoperative APBI? Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.633] [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: 10/27/2022]
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Bao T, Tarpinian K, Medeiros M, Gould J, Jeter S, Cai L, Tait N, Shetty J, Lewis J, Gitten L, Betts K, Hoffman A, Feigenberg S, Chumsri S, Armstronge DK, Bardia A, Tan M, Stebbing J, Folkerd E, Dowsett M, Singh H, Tkaczuk K, Stearns V. P4-12-13: A Multi-Center Randomized Controlled Double Blind Trial Assessing the Effect of Acupuncture in Reducing Musculoskeletal Symptoms in Breast Cancer Patients Taking Aromatase Inhibitors: First Interim Analysis. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p4-12-13] [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: 11/16/2022]
Abstract
Abstract
Background: Aromatase inhibitors (AIs) are recommended as first-line adjuvant hormonal therapy in postmenopausal women with hormone-receptor-positive breast cancer, as monotherapy or sequential therapy after tamoxifen. AI-associated musculoskeletal symptoms (AIMSS) occur in approximately 50% of women receiving AIs and in some may result in discontinuation of treatment. Symptom management is essential to ensure that breast cancer patients receive the full recommended duration of AI therapy. We conducted a randomized, placebo-controlled trial to evaluate the effect of acupuncture on AIMSS and report the first interim analysis.
Method: Postmenopausal women with early stage breast cancer, experiencing AIMSS, who had not had acupuncture in the year prior to the study, were eligible. Patients were randomized to 8 weekly acupuncture or sham acupuncture. Health assessment questionnaire disability index (HAQ-DI ranging 0–3.0) and pain visual analog scale (VAS ranging 0–100) were used to assess clinical musculoskeletal disorder severity at weeks 0, 4, 8, and 12 or 24. Change in HAQ-DI (ΔHAQ-DI) and VAS scores (ΔVAS) from baseline were compared between patients receiving acupuncture versus sham acupuncture using exact Wilcoxon rank sum test. Serum samples were collected for measurements of estrogens and beta endorphin concentrations and cytokine profile before and after the intervention to evaluate the etiology of AIMSS and the mechanism of acupuncture in treating AIMSS.
Results: Between May 2008 and June 2011, 48 patients were enrolled, 2 patients were not evaluable due to noncompliance to treatment and lost to follow up, 10 were still receiving treatment and therefore not evaluable. Thirty-six were evaluable, and were equally distributed between the real and sham acupuncture groups. Baseline characteristics were balanced between the two groups with regard to age, race, and body mass index (BMI) with the exception that baseline mean HAQ-DI was higher in the acupuncture group (0.9 vs 0.55, p=0.04). White/Black/Asian: 26/7/3, Median (range): age: 61 (45-82); BMI (kg/m2): 31.1 (22.9−59.6). At week 8, both groups showed a wide range of ΔHAQ-DI (ΔHAQ-DI =HAQ-DIweek8-HAQ-DIbaseline): from −1.38 to 0.5 in the acupuncture group versus from −1 to 0.12 in sham acupuncture group. There was no statistically significant difference in mean ΔHAQ-DI between the real and sham acupuncture groups (−0.33 vs −0.33, p=0.87). Eleven patients in each group (61%) reported decreased HAQ-DI scores, which correlated with improved function. There was no difference in mean ΔVAS between the real and sham acupuncture groups (−9.27 vs −13.82, p=0.67). No significant side effects were reported. Changes in other time points and in serum biomarkers will be presented at the meeting.
Conclusions: The majority of breast cancer patients experiencing AIMSS who participated in our study reported a reduced HAQ-DI score both from acupuncture and sham acupuncture. We did not observe significant differences between responses to real versus sham acupuncture after 8 weekly treatments. The study remains open to accrual to reach 50 evaluable patients.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P4-12-13.
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Affiliation(s)
- T Bao
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - K Tarpinian
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - M Medeiros
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - J Gould
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - S Jeter
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - L Cai
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - N Tait
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - J Shetty
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - J Lewis
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - L Gitten
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - K Betts
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - A Hoffman
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - S Feigenberg
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - S Chumsri
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - DK Armstronge
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - A Bardia
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - M Tan
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - J Stebbing
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - E Folkerd
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - M Dowsett
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - H Singh
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - K Tkaczuk
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
| | - V Stearns
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; Johns Hopkins Sydney Kimmel Comprehensive Cancer Center, Baltimore, MD; Hammersmith Hospitals NHS Trust Charing Cross Hospital, London, United Kingdom; The Royal Marsden NHS Foundation Trust, London, United Kingdom
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Chumsri S, Tait NS, Medeiros MM, Bauer KS, Betts KMT, Lewis JC, Bao T, Feigenberg SJ, Kesmodel SB, Stearns V, Edelman MJ, Sausville EA, Tkaczuk KHR. P1-12-20: The Safety and Tolerability of Vorinostat in Combination with Lapatinib in Advanced Solid Tumors. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p1-12-20] [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: Lapatinib has been previously shown to markedly decrease cancer stem cells (CSC) in HER2−positive breast cancer. In preclinical models, we have demonstrated that histone deacetylase inhibitors (HDACi) such as vorinostat can induce differentiation and decrease CSC. The combination of vorinostat and lapatinib is synergistic with a combination index of 0.32 (synergism if CI <1). We therefore undertook a pilot study to evaluate the combination of these two drugs in advanced solid tumors.
Method: Patients were eligible if they were: age ≥ 18 years with incurable solid tumors, ECOG PS 0–2, adequate organ function, and no prior exposure to HDACi. The first 3 patients received lapatinib at the dose of 1,250 mg continuous daily and vorinostat 300 mg 4 days on 3 days off. The second dose level with lapatinib 1,250 mg continuous daily and vorinostat 400 mg 4 days on 3 days off were administered in 6 patients. Cycles were repeated every 21 days until disease progression. Echocardiogram and radiologic evaluation were performed every 12 weeks. During the first cycle, pharmacokinetic (PK) evaluation was performed on days 18 and 21.
Results: Nine consented patients (7 with metastatic breast cancer, 1 with non-small cell lung cancer, and 1 with thyroid cancer) have been enrolled with the median age of 52 (range 25–66). Patients received an average of 6 prior treatments (range 2–10). No dose limiting toxicity or drug related death have been observed. Grade 1–2 toxicities including diarrhea, fatigue, muscle cramps and stomatitis were observed. No grade 3 or 4 hepatic, renal or cardiac toxicity were observed (including no QTc prolongation and no significant reduction in the left ventricular ejection fraction). Patients have received the maximum of 7 cycles (median 3 cycles, range 2–7). Response: as of June 2011, 2 patients are still on treatment. Two patients achieved stable disease (triple negative metastatic breast cancer and HER2−positive breast cancer), 6 patients with progressive disease, and 1 patient is too early to evaluate for response. PK analysis will be presented at the time of the meeting.
Conclusions: The combination of vorinostat and lapatinib is tolerable and has some antitumor activity in heavily pretreated advanced solid tumors. A phase II study in HER2−positive metastatic breast cancer is underway with lapatinib 1,250 mg continuous daily and vorinostat 400 mg 4 days on 3 days off.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P1-12-20.
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Affiliation(s)
- S Chumsri
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - NS Tait
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - MM Medeiros
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - KS Bauer
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - K-MT Betts
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - JC Lewis
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - T Bao
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - SJ Feigenberg
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - SB Kesmodel
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - V Stearns
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - MJ Edelman
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - EA Sausville
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
| | - KHR Tkaczuk
- 1University of Maryland Greenebaum Cancer Center, Baltimore, MD; The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; University of Maryland, Baltimore, MD
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Mahmood U, Morris C, Neuner G, Koshy M, Kesmodel S, Buras R, Chumsri S, Bao T, Tkaczuk K, Feigenberg S. Equivalent Survival with Breast Conservation Therapy or Mastectomy in the Management of Young Women with Early-stage Breast Cancer. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.067] [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: 11/27/2022]
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Mahmood U, Morris CG, Neuner GA, Koshy M, Kesmodel S, Buras R, Chumsri S, Bao T, Tkaczuk KH, Feigenberg SJ. Comparing survival with breast-conservation therapy or mastectomy in the management of young women with early-stage breast cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.27_suppl.85] [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: 11/20/2022] Open
Abstract
85 Background: Previous studies have shown that young women with breast cancer treated with breast-conservation therapy (BCT) experience higher local recurrence rates. Whether such patients are better treated with mastectomy is unclear. The purpose of this study was to evaluate survival outcomes of young women with early-stage breast cancer treated with BCT or mastectomy using a large, population-based database. Methods: Using the Surveillance, Epidemiology, and End Results (SEER) database, information was obtained for all female patients age 20 to 39 diagnosed with T1-2 N0-1 M0 breast cancer between 1990 and 2007 who underwent either BCT (lumpectomy and radiation treatment) or mastectomy. Multivariable analysis as well as a matched pair analysis were performed to compare overall survival (OS) and cause-specific survival (CSS) of patients undergoing BCT and mastectomy. Results: 14,760 women were identified, of whom 45% received BCT and 55% received mastectomy. Median follow-up was 5.7 years (range: 0.5 to 17.9 years). Multivariable analysis revealed year of diagnosis, age, race/ethnicity, grade, PR status, tumor size, number of lymph nodes positive, and number of lymph nodes examined were independent predictors of OS and CSS while ER status was of borderline significance. After accounting for all patient and tumor characteristics, multivariable analysis found that BCT resulted in similar OS (HR: 0.93; CI: 0.83-1.04; p = 0.16) and CSS (HR: 0.93, CI: 0.83-1.05; p = 0.26) as mastectomy. Matched pair analysis, including 4,644 BCT and mastectomy patients, confirmed no difference in OS or CSS: the 5/10/15-year OS for BCT and mastectomy were 92.5%/83.5%/77.0% and 91.9%/83.6%/79.1%, respectively (p = 0.99) and the 5/10/15-year CSS for BCT and mastectomy were 93.3%/85.5%/79.9% and 92.5%/85.5%/81.9%, respectively (p = 0.88). Conclusions: Young women with early-stage breast cancer have equivalent survival whether treated with BCT or mastectomy. These patients should be counseled appropriately regarding their treatment options, and should not choose a mastectomy based on the assumption of improved survival.
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Affiliation(s)
- U. Mahmood
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - C. G. Morris
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - G. A. Neuner
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - M. Koshy
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - S. Kesmodel
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - R. Buras
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - S. Chumsri
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - T. Bao
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - K. H. Tkaczuk
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
| | - S. J. Feigenberg
- University of Maryland, Houston, TX; Department of Radiation Oncology, University of Florida, Gainesville, FL; University of Maryland, Baltimore, MD; The University of Chicago, Chicago, IL; Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD; University of Maryland School of Medicine, Baltimore, MD
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Bao T, Medeiros M, Zhang R, Lao L, Badros AZ. Improvement of painful bortezomib-induced peripheral neuropathy following acupuncture treatment in a case series of patients with multiple myeloma. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e19569] [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: 11/20/2022] Open
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Singh SN, Baer MR, Tkaczuk KH, Chumsri S, Bao T, Riedel D. Breast cancer in patients with HIV: A single-institution experience with a non-AIDS defining cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e11108] [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: 11/20/2022] Open
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Weinstock C, Zhu Y, Bao T, Buras RR, Hanna NN, Tkaczuk K, Chumsri S. Abstract P6-06-01: Relationship between Vitamin D Deficiency and Breast Cancer Histology: A Retrospective Database Review. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p6-06-01] [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: 11/16/2022]
Abstract
Abstract
Background: Vitamin D deficiency has recently been shown to be correlated with high rates of developing breast cancer (Chen P et al, Breast Cancer Res Treat; Oct 2009). However, the association between the degree of vitamin D deficiency and specific histological subtypes of breast cancer remains unclear. Preclinical data has suggested that vitamin D plays an essential role in the terminal differentiation of breast cancer cells, and thus vitamin D deficiency would be associated with the pathogenesis of estrogen receptor negative tumors (Welsh J et al, Journal of Steroid Biochem Mol Biol; Feb 2003), in particular triple-negative tumors, which are associated with a particularly aggressive clinical course. Methods: Beginning in July 2008, the majority of newly diagnosed breast cancer patients at University of Maryland Greenebaum Cancer Center had Vitamin D 25-OH levels testedon initial presentation to the clinic. We conducted a retrospective chart review to obtain information about tumor histology and vitamin D levels in these patients. Results: We include data on 71 patients who presented with newly-diagnosed breast carcinoma or DCIS between June 2008 and December 2009. Average age at diagnosis was 57 (range 36-87), and 58% of patients were African American. Stage distribution of the cohort included; DCIS-3%, stage I-15%, stage II-41%, stage III-28%, and stage IV-10%. Overall, 80% of the patients were vitamin D deficient at diagnosis, with vitamin D levels under 30 ng/ml, and 57% had levels under 20 ng/ml. Patients with triple-negative tumors were the most likely to be vitamin D deficient at diagnosis (90%) compared to hormone receptor-positive patients (75%), and they had the lowest mean and median vitamin D levels compared to all other patients.
Percentage of patients with Vitamin D deficiency
Vitamin D level by histological subtype
Hormone receptor-positive patients were significantly more likely to have normal vitamin D levels at diagnosis and significantly less likely to have severe deficiency (level <10 ng/ml) than those with hormone receptor-negative tumors (p=0.037). African-American women in this cohort were also more likely to be severely vitamin D deficient, with levels <10 ng/ml, than were Caucasian women (34% vs. 7%, p=0.048). Conclusion: Vitamin D deficiency is common among patients with newly-diagnosed breast cancer. Patients with triple-negative tumors may have a higher likelihood of being vitamin D deficient than patients with other histological subtypes.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P6-06-01.
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Affiliation(s)
- C Weinstock
- University of Maryland Medical Center, Baltimore
| | - Y Zhu
- University of Maryland Medical Center, Baltimore
| | - T Bao
- University of Maryland Medical Center, Baltimore
| | - RR Buras
- University of Maryland Medical Center, Baltimore
| | - NN Hanna
- University of Maryland Medical Center, Baltimore
| | - K Tkaczuk
- University of Maryland Medical Center, Baltimore
| | - S. Chumsri
- University of Maryland Medical Center, Baltimore
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Bao T, Slater SA, Blackford A, Jeter SC, Wright L, Rudek MA, Desta Z, Stearns V. Effect of simvastatin on the pharmacokinetics of anastrozole. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.1517] [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: 11/20/2022] Open
Abstract
1517 Background: When used in the adjuvant setting, aromatase inhibitors (AIs) reduce the incidence of contralateral breast cancer and are therefore under investigation for primary breast cancer prevention. Statins hold promise for chemoprevention based on preclinical and epidemiological data. Adding statin to AI has the potential to enhance breast cancer prevention and to protect women from AI-related side effects. Prior to initiating a chemoprevention trial of combination therapy, we evaluated the potential for pharmacokinetic drug-drug interaction between anastrozole and simvastatin in postmenopausal women taking adjuvant anastrozole to ensure that the combination will not influence anastrozole concentration or affect its ability to reduce estrogen. Methods: Postmenopausal women with hormone receptor-positive, stage 0-III breast cancer who had been on adjuvant anastrozole (1 mg/day) for at least 30 days were prescribed 14 days of simvastatin (40 mg/day). We collected serum at baseline (anastrozole alone) and after 14 days of simvastatin initiation (combination therapy). Anastrozole and hydroxyanastrozole, its hydroxylated metabolite, concentrations were determined using liquid chromatography-tandem mass spectrometry assay. Estrogen concentrations will be determined using radio-immunoassay. Significant change in anastrozole was predetermined to be greater than a 30% decrease in concentrations. Percent changes from baseline in anastrozole and hydroxyanastrozole were evaluated using Wilcoxon signed-rank tests. Results: From December 2006 to September 2008, 11 women (10 Caucasian, 1 Black, all reported non-Hispanic with a mean age of 60 yrs [range 51–69]) were enrolled in the study. Of these women, nine had evaluable anastrozole concentrations. After 14 days of simvastatin, there were nonsignificant changes in anastrozole (median percentage difference = 10.1% [-13.5%, 38.4%], p = 0.36) and hydroxyanastrozole (median percentage difference = -3.0% [-19.1%, 11.2%], p = 0.65). Estrogen data will be available for presentation. Conclusions: Simvastatin is unlikely to alter the pharmacokinetics of anastrozole in a clinically meaningful way. Combination studies to assess chemopreventive properties of the combination are planned. [Table: see text]
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Affiliation(s)
- T. Bao
- Johns Hopkins Kimmel Cancer Center, Baltimore, MD; University of Colorado, Denver, CO; Indiana University, Bloomington, IN
| | - S. A. Slater
- Johns Hopkins Kimmel Cancer Center, Baltimore, MD; University of Colorado, Denver, CO; Indiana University, Bloomington, IN
| | - A. Blackford
- Johns Hopkins Kimmel Cancer Center, Baltimore, MD; University of Colorado, Denver, CO; Indiana University, Bloomington, IN
| | - S. C. Jeter
- Johns Hopkins Kimmel Cancer Center, Baltimore, MD; University of Colorado, Denver, CO; Indiana University, Bloomington, IN
| | - L. Wright
- Johns Hopkins Kimmel Cancer Center, Baltimore, MD; University of Colorado, Denver, CO; Indiana University, Bloomington, IN
| | - M. A. Rudek
- Johns Hopkins Kimmel Cancer Center, Baltimore, MD; University of Colorado, Denver, CO; Indiana University, Bloomington, IN
| | - Z. Desta
- Johns Hopkins Kimmel Cancer Center, Baltimore, MD; University of Colorado, Denver, CO; Indiana University, Bloomington, IN
| | - V. Stearns
- Johns Hopkins Kimmel Cancer Center, Baltimore, MD; University of Colorado, Denver, CO; Indiana University, Bloomington, IN
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Bao T, Shahverdi K, Blackford AL, Prowell T, Jeter SC, Powers P, Wright L, Snyder CF, Stearns V, Visvanathan K. Quality of life (QOL) changes in breast cancer patients participating in an anastrozole secondary prevention trial. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.1515] [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: 11/20/2022] Open
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Smith BD, Bao T, Karp JE. New concepts in the treatment of acute myeloid malignancies: selected pathways for targeted therapy. J BIOL REG HOMEOS AG 2005; 19:23-32. [PMID: 16178271] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Acute myeloid leukemia (AML) and myelodysplasia (MDS) continue to present formidable treatment challenges as there is not yet a "standard approach" that reliably and safely cures the majority of adults with these disorders. Understanding the basic cellular and molecular biology of leukemia is vital to the development of better treatment approaches. All malignant cells, including leukemias, carry survival advantages compared to their normal counterparts. These survival advantages are particularly evident when the cells face both normal environmental stressors as well as extreme stressors of potentially lethal DNA damage. The impact of such stressors is ultimately determined by the signaling pathways and resultant cellular activation, including alterations in cellular growth, differentiation, survival and death. It is our improving understanding of these signaling pathways, both normal and malignant, that provide the targets for novel therapies. In this review article, we will focus on several signaling pathways, as well as the regulation of the cell cycle, that not only represent potentially accessible sites for intervention in myeloid malignancies, but those that are actively being studied.
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Affiliation(s)
- B D Smith
- Hematologic Malignancies, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland 21231, USA
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Abstract
OBJECTIVE To evaluate effects of CordyMax Cs-4, a mycelial fermentation product of Cordyceps sinensis, on energy metabolism. DESIGN An in vivo pharmacology study using 31P nuclear magnetic resonance (NMR) spectroscopy. SUBJECTS AND STUDY INTERVENTIONS: Adult male C57-BL/6 mice were given an aqueous extract of CordyMax, 200 or 400 mg/kg per day or placebo for 7 days. OUTCOME MEASUREMENTS Using 31P-NMR spectroscopy to measure cellular triphosphates and inorganic phosphate, expressed as a ratio to a reference peak, and calculate tissue pH. RESULTS Steady-state beta adenosine triphosphate (ATP) increased in the liver of mice that received CordyMax (200 or 400 mg/kg per day) for 7 days, by 12.3% +/- 0.8% and 18.4% +/- 0.9%, respectively, compared to placebo controls (both p < 0.001), suggesting a higher hepatic bioenergy status in CordyMax-treated animals. Hepatic inorganic phosphate (Pi) decreased by 24.5% +/- 0.9% and 17.6% +/- 1.7% in the two treatment groups, respectively, compared to placebo controls (p < 0.001). The ratio of beta-ATP:Pi increased by 47.7% +/- 1.6% and 41.4% +/- 2.4%, respectively, in the treatment groups (both p < 0.001 compared to placebo). After discontinuation of CordyMax for 7 days, beta-ATP and Pi returned towards baseline. CONCLUSION CordyMax is effective in improving bioenergy status in the murine liver, suggesting a mechanism underlying the known clinical effectiveness of CordyMax in alleviating fatigue and improving physical endurance, especially in elderly subjects.
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Affiliation(s)
- G Dai
- Department of Pharmacology, Institute of Materia Medica, Peking Union Medical University, Chinese Academy of Medical Sciences, Beijing, China
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Zhou X, Xao X, Zhang W, Yang H, Bao T. [The effect of cardiopulmonary bypass on expression of myocardial nitric oxide synthase in patients for valve replacement]. Hua Xi Yi Ke Da Xue Xue Bao 2000; 31:91-2. [PMID: 12501625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
The objective of this study was to assess the effect of cardiopulmonary bypass (CPB) on expression of nitric oxide synthase (NOS) in patients for valve replacement. Ten adult patients were included in this study. CPB was initiated with a bubble oxygenator, aorta was clamped, and cold crystalliod cardioplegia was delivered into the aortic root. The myocardium of atrial appendage was obtained pre-CPB and 45 minutes post-CPB. The expression of three kinds of NOS isoenzymes was assessed by immunohistochemistry and microcomputerized image analysis. The results demonstrate that there are expression of nNOS (nervous NOS), iNOS (inducible NOS) and eNOS (endothelial NOS) in the atrial myocardium of patients for valve replacement. Compared with the expressions of NOS pre-CPB, the post-CPB expression of nNOS increased and that of eNOS decreased (P < 0.05), but no significant change in expression of iNOS was noted(P > 0.5). We belive that the decreased expression of eNOS may be related with the deficiency of nitric oxide release and may be responsible for tissue damage during CPB.
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Affiliation(s)
- X Zhou
- Department of Histology, School of Basic Medical Sciences, WCUMS, Chengdu 610041
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Li X, Wang Y, Bao T. [RP-HPLC determination of adenosine in fermented Cordyceps]. Zhongguo Zhong Yao Za Zhi 1999; 24:12-4, 62. [PMID: 12078146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
OBJECTIVE A method for determination of adenosine in four fermented Cordyceps products by RP-HPLC is described. METHOD C18 column was used with methanol-0.06 mol/L potassium phosphate monobasic-tetrahydrofuran (10:150:1.5) as mobile phase. The flow rate was 1 ml/min and detected at 260 nm. RESULTS The average recovery was 98.7% and relative standard deviation was 1.10% (n = 5). CONCLUSION This method is simple, rapid and sensitive. The paper introduces the feasibility of supersonic extraction method taking the place of reflux method.
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Affiliation(s)
- X Li
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050
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Zhang X, Zhou X, Wu L, Bao T. [The effect of electroacupuncture stimulation an neurotrophic substance in cat spinal dorsal horn]. Hua Xi Yi Ke Da Xue Xue Bao 1998; 29:264-8. [PMID: 10684088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
For exploration of the mechanism of collateral sprouting from injured spinal cord, polyacrylamide gel electrophoresis (PAGE) and modified hanging drop culture method were used to examine the effect of acupuncture on the amount and the biological activity of neurotrophic substance in larger than 50 kd fraction of dorsal horn in cat subjected to partial dorsal rhizotomy. The results showed that the amount of protein in relative mobility (RM) 0.1 zone increased significantly in the acupuncture-operated group by PAGE and that of protein in RM 0.5 zone decreased significantly as compared with the unoperated group. While this data was compared with the data of another operated group in our lab, the amount of RM 0.1 protein of the acupuncture-operated group was significantly higher than that of the latter group; however, no obvious difference was noted between the two groups in the amount of RM 0.5 protein. It suggests that acupuncture may promote tha amount of RM 0.1 protein to increase, but acupuncture has no influence on the amount of RM 0.5 protein. Also, the results showed that, in culture, accompanying with the increase in amount, the activity of RM 0.1 protein for promoting DRG neurite-outgrowth increased. This indicates that the RM 0.1 protein has a function to promote DRG neurite-outgrowth, but the RM 0.5 protein has no obvious effect on DRG neurite-outgrowth.
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Affiliation(s)
- X Zhang
- Research Unit of Histology, School of Basic Medical Sciences, Chengdu
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Zhou X, Zhang W, Bao T. [Expression of glial cells line-derived neurotrophic factor in the central nervous system of rat]. Hua Xi Yi Ke Da Xue Xue Bao 1998; 29:289-91, 306. [PMID: 10684095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Glial cell line-derived neurotrophic factor (GDNF) iss a distant member of the transforming growth factor-beta, originally isolated by virtue of its ability to induce dopamine uptake and cell survival in cultures of embryonic ventral midbrain dopaminergic neurons, and more recently it has been shown to be a potent neurotrophic factor for motor neurons. However, the distribution of this molecule in the central nervous system (CNS) is not known yet. In the present study, the expression of GDNF of rat was investigated by using immunohistochemistry. GDNF immunoreactive fibers or bodies were found in molecular layer and Purkinje layer of cerebellum. In the spinal cord, neuronal expression was found widely, especially in ventral horn, Clarke's column. GDNF was also expressed in fiber terminals of I and II lamella of dorsal horn. Additionally, GDNA expression was found in the ependymal epithelium and neuroglia of spinal cord. The nuclei of neuroglia were stronger than perikaryon. The neurons in cerebral cortex showed very weak immunoreaction. We conclude that GDNF is expressed in many different cellular systems within the CNS, suggesting the multiple functions of GDNF in the adult CNS.
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Affiliation(s)
- X Zhou
- Department of Histology and Embryology, School of Basic Medical Science, Changdu
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Lu Y, Zheng Q, Wu N, Zhou J, Bao T. [Studies on all-spectrum analysis for X-ray diffraction of Chinese herbal medicine calculus bovis]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1997; 19:331-6. [PMID: 10453516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Investigation on famouse Chinese herbal medicine-Niu huang (calculus bovis) was carried out by all-spectrum X-ray diffraction analysis. Diffraction spectrums, as well as the specific symboling peaks of calculus bovis, artificial bezoar, bile ductstone, human gallstone and hog gallstone, were recognized. The error distribution curves of d-delta d for specific symboling peaks was also obtained by calculation under diffrent testing conditions, by which we identified successfully three samples provided by a pharmaceutical factory. This article shows that all-spectrum X-ray diffraction analysis can be used to identify Chinese traditional crude drug, and provides for morphological and microscopical study.
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Affiliation(s)
- Y Lu
- Institute of Materia Medica, CAMS, Beijing
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Liao D, Zeng Z, Fang Y, Xiao J, Bao T, Chen S, Ma Y, Li G. [A morphometric study on hippocampus of epileptic rats induced by coriaria lactone]. Hua Xi Yi Ke Da Xue Xue Bao 1996; 27:155-9. [PMID: 9389031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This experiment was carried out with these rats were injected with 3.8 microliters (19 micrograms) convulsive dosage of coriaria lactone (CL) in the left cerebral motor cortex of the forelimb to induce acute focal epilepsy, while the other 5 rats as controls (no seizure) received normal saline solution of the same volume and at the same location. The brains were taken after seizuring for 60 min. The volume (water displacement method) and weight of the brain were measured. The brain was cut coronally and the structures of hippocampus were compared morphologically with those of the pair-matched control. The area of hippocampal formation was measured with paraffin section by test grid under 40x. The mean size (Feret's diameter) of pyramidal neurons in CA1 region was measured with semithin section by ocular micrometer under 1000x. The areal fraction of several organelles of the CA1 pyramidal cells was measured with EM negative film by magnifier. Under conditions of the consistent reference space, especially the size of CA1 pyramidal cells, the areal fraction of rough endoplasmic reticulum, lysosome and mitochondria increased significantly (P < 0.05) in epileptic rats. It indicated that their volume increased. The results show that certain ultrastructural changes have taken place after seizuring for 60 min.
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Affiliation(s)
- D Liao
- Research Unit of Histology, Chengdu
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Hong M, Liu JK, Bao T, Yang SN. Effect of gluco- and mineralocorticoids on gene expression of atrial natriuretic peptide by rat atria in vivo. Chin Med J (Engl) 1992; 105:549-52. [PMID: 1451559] [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] [Indexed: 12/27/2022] Open
Abstract
The effect of gluco- and mineralocorticoids on atrial natriuretic peptide (ANP) gene expression as well as plasma sodium and potassium concentrations was studied in both intact and adrenalectomized Wistar rats. Atria total RNA was extracted with cold phenol method and hybridized to alpha-32P labeled rat ANP-cDNA probe. The ANP gene transcripts in intact rats receiving dexamethasone and in adrenalectomized rats receiving both dexamethasone and deoxy-corticosterone increased by twofold, while there were no significant changes in the other groups. There were no parallel correlations between the rise of corticoid hormones-induced plasma Na+ concentration and the enhancement of rANP-mRNA level. The results suggest that glucocorticoids, when used together with mineralocorticoids, may directly increase ANP gene expression, whereas administration of mineralocorticoids alone has no effect on ANP gene expression.
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Affiliation(s)
- M Hong
- Department of Biochemistry, Norman Bethune University of Medical Sciences, Changchun
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Hong M, Liou JK, Bao T, Zhou XP. [Effect of adrenal cortical hormones on the expression of atrial natriuretic peptide (ANP) gene in vivo]. Sheng Li Xue Bao 1991; 43:494-8. [PMID: 1839083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Experiments were conducted in intact and adrenalectomized female Wistar rats given dexamethasone, deoxycorticosterone or both, and atria total RNA was extracted with cold phenol method and hybridized to rat ANP-cDNA probe labeled with alpha-32P. The ANP gene transcripts in intact rats receiving dexamethasone and in adrenalectomized rats receiving dexamethasone and deoxycorticosterone increased by 2-fold, while there were no significant changes in the other groups. The results suggest that glucocorticoids enhance ANP gene expression, an effect relying on the presence of mineralocorticoids which given alone does not give rise to ANP gene expression enhancement.
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Affiliation(s)
- M Hong
- Biochemistry Department, Norman Bethune University of Medical Science, Changchun
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Yang GZ, Bao T, Geng PL. The immunoregulatory effects of ginsenoside in vivo and in vitro. J TRADIT CHIN MED 1986; 6:191-4. [PMID: 3027461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Bao T. [Immune effect of ginsenoside on mice and its mechanism]. Zhong Xi Yi Jie He Za Zhi 1984; 4:172-5. [PMID: 6234099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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