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Hsu CH, Nguyen VB, Nguyen AD, Wang SL. Conversion of shrimp heads to α-glucosidase inhibitors via co-culture of Bacillus mycoides TKU040 and Rhizobium sp. TKU041. Res Chem Intermed 2018. [DOI: 10.1007/s11164-018-3266-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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103
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Wang X, Zhao DB, Yang L, Chi Y, Tang Y, Li N, Wang SL, Song YW, Liu YP, Liu WY, Ren H, Zhang T, Wang JY, Chen XS, Fang H, Wang WH, Li YX, Jin J. S-1 chemotherapy and intensity-modulated radiotherapy after D1/D2 lymph node dissection in patients with node-positive gastric cancer: a phase I/II study. Br J Cancer 2017; 118:338-343. [PMID: 29235569 PMCID: PMC5808036 DOI: 10.1038/bjc.2017.424] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 10/27/2017] [Accepted: 10/31/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND This phase I/II clinical trial investigated S-1 administered with intensity-modulated radiotherapy (IMRT) as adjuvant therapy for node-positive gastric cancer. Patients had undergone radical resection and D1/D2 lymph node dissection. METHODS In phase I, patients received adjuvant chemoradiotherapy of IMRT (45 Gy in 25 fractions) with concurrent S-1 administered on a dose-escalation schedule to determine the recommended dose (RD). In phase II, the safety and efficacy of the RD of S-1 combined with IMRT were assessed. RESULTS We consecutively enrolled 73 patients (56 men; median age, 53 years; range, 29-73 years) and the phase I portion of the study included 27 patients. The RD of S-1 administered concomitantly with IMRT was 80 mg m-2 day-1 orally, twice daily. The phase II analysis included 52 patients (46 new patients plus 6 from phase I). 8 patients (15.4%) developed grade 3 or 4 toxicities. There were 21 recurrence events and 15 deaths (1 bowel obstruction, 14 gastric cancer). Three-year disease-free survival and overall survival were 62.2% (95% confidence interval (CI), 48.5-75.9) and 70.0% (95% CI, 56.3-83.7), respectively. The median time to recurrence was 17.5 months (range, 3.8-42.0). The median time from recurrence to death was 7.0 months (range, 1.5-28.7). CONCLUSIONS S-1 combined with IMRT adjuvant chemoradiotherapy is safe and efficacious for advanced gastric cancer.
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Affiliation(s)
- X Wang
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - D B Zhao
- Department of Pancrea-gastric Surgery, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - L Yang
- Department of Medical Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Y Chi
- Department of Medical Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Y Tang
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - N Li
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - S L Wang
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Y W Song
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Y P Liu
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - W Y Liu
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - H Ren
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - T Zhang
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - J Y Wang
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - X S Chen
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - H Fang
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - W H Wang
- Department of Radiation Oncology, Beijing Cancer Hospital, Beijing 100142, People's Republic of China
| | - Y X Li
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - J Jin
- Department of Radiation Oncology, Cancer Hospital and Institute, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College, Beijing 100021, People's Republic of China
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Li M, Wang SL, Fang H, Tang Y, Chen B, Qi SN, Song YW, Liu YP, Lu NN, Li N, Tang Y, Ren H, Jin J, Li YX. [Risk-adapted postmastectomy radiotherapy based on local-regional recurrence for T1-2N1M0 breast Cancer]. Zhonghua Zhong Liu Za Zhi 2017; 39:841-849. [PMID: 29151291 DOI: 10.3760/cma.j.issn.0253-3766.2017.11.007] [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 establish a risk-adapted postmastectomy radiotherapy strategy based on local-regional recurrence for intermediate-risk breast cancer (T1~2N1M0 stage). Methods: A total of 2413 patients with T1-2N1M0 breast cancer were retrospectively reviewed. Of them, 588 patients (24.4%) received postmastectomy radiotherapy (PMRT), while 1 825 (75.6%) patients did not. A comprehensive comparative study was performed by using multivariable and propensity score-matched (PSM) analyses. Results: The median follow-up time was 67.0 months, the 5-year local region recurrence free-survival (LRRFS), disease-free survival (DFS) and overall survival (OS) were 93.8%, 85.7% and 93.3%, respectively. The 5-year local region recurrence (LRR) was 6.1%. For patients without PMRT, multivariable analysis indicated that age, tumor localization, molecular subtype, pathologic T stage and number of positive lymph node were independent factors for LRRFS (all of P<0.05). Patients with T1-2N1 breast cancer were classified into low-risk group (0-1 risk factor, 768 patients), intermediate-risk group (2 risk factors, 690 patients) and high-risk groups (≥3 risk factors, 544 patients) based on the five independent factors mentioned above. The 5-year LRRFS, DFS and OS were significantly different among the three groups (P<0.001). In low- and intermediate-risk groups, there were no significant differences in LRRFS, DFS and OS of patients who received PMRT or not (P>0.05). In high-risk group, the DFS of patients received PMRT or not were 79.8% and 74.4%, respectively (P=0.127), the OS of them were 86.8% and 87.1%, respectively (P=0.174), and the LRRFS were 93.3% and 84.3%, respectively (P=0.002). After PSM adjustment, no significant differences in LRRFS, DFS and OS were observed between PMRT-received subgroup and no PMRT subgroup of low-risk group (P>0.05). In intermediate-risk group, the LRRFS of patients received PMRT or not were 95.2% and 91.0%, respectively (P=0.037). However, in the high-risk group, the LRRFS, DFS and OS of patients received PMRT were 93.3%, 79.7% and 86.6%, respectively, while those of patients did not receive PMRT were 78.5% (P<0.001), 69.5% (P=0.038) and 85.7% (P=0.080), respectively. Conclusions: The local-regional recurrence risks of patients with pT1-2N1 breast cancer are viable and risk-adapted PMRT is available for them. Better prognoses can be achieved by the patients of intermediate and high-risk group. More samples on this subject are needed to validate the results.
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Affiliation(s)
- M Li
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S L Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Tang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - B Chen
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S N Qi
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y W Song
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y P Liu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N N Lu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Tang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Ren
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J Jin
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y X Li
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Nguyen VB, Wang SL. Reclamation of Marine Chitinous Materials for the Production of α-Glucosidase Inhibitors via Microbial Conversion. Mar Drugs 2017; 15:md15110350. [PMID: 29112160 PMCID: PMC5706040 DOI: 10.3390/md15110350] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 10/29/2017] [Accepted: 11/03/2017] [Indexed: 11/24/2022] Open
Abstract
Six kinds of chitinous materials have been used as sole carbon/nitrogen (C/N) sources for producing α-glucosidase inhibitors (aGI) by Paenibacillus sp. TKU042. The aGI productivity was found to be highest in the culture supernatants using demineralized crab shell powder (deCSP) and demineralized shrimp shell powder (deSSP) as the C/N source. The half maximal inhibitory concentration (IC50) and maximum aGI activity of fermented deCSP (38 µg/mL, 98%), deSSP (108 µg/mL, 89%), squid pen powder (SPP) (422 µg/mL, 98%), and shrimp head powder (SHP) (455 µg/mL, 92%) were compared with those of fermented nutrient broth (FNB) (81 µg/mL, 93%) and acarbose (1095 µg/mL, 74%), a commercial antidiabetic drug. The result of the protein/chitin ratio on aGI production showed that the optimal ratio was 0.2/1. Fermented deCSP showed lower IC50 and higher maximum inhibitory activity than those of acarbose against rat intestinal α-glucosidase.
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Affiliation(s)
- Van Bon Nguyen
- Department of Science and Technology, Tay Nguyen University, Buon Ma Thuot City 630000, Vietnam.
| | - San-Lang Wang
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
- Life Science Development Center, Tamkang University, New Taipei City 25137, Taiwan.
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106
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Nguyen VB, Wang SL, Nguyen AD, Vo TPK, Zhang LJ, Nguyen QV, Kuo YH. Isolation and identification of novel α-amylase inhibitors from Euonymus laxiflorus Champ. Res Chem Intermed 2017. [DOI: 10.1007/s11164-017-3175-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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107
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Li XS, Song YL, Li DC, Zhu HX, Meng LM, Huang RR, Wang SL, Wang D, Fang H, Fan HX. [Preoperative dynamic contrast-enhanced MRI can reduce the rate of tumor-positive resection margins after breast conserving surgery in patients with early non-mass breast carcinoma]. Zhonghua Zhong Liu Za Zhi 2017; 39:768-774. [PMID: 29061022 DOI: 10.3760/cma.j.issn.0253-3766.2017.10.010] [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 value of preoperative dynamic contrast-enhanced MRI in reducing the rate of tumor-positive resection margins after breast conserving surgery in patients with early non-mass breast carcinoma. Methods: Seventy-two patients with early non-mass breast carcinoma received ultrasonographic and mammographic examination and subsequently underwent dynamic contrast-enhanced MRI examination before breast conserving surgery. The control group consisted of 74 patients who had early non-mass breast carcinoma. They only received ultrasonographic and mammographic examination and didn't undergo contrast-enhanced MRI examination. The comparison of the rate of tumor-positive resection margins between two groups was performed. The MRI findings that had the significant influence on the rate of tumor-positive resection margins were analyzed using Logistic regression model. Results: In 28 patients (28/72, 38.9%), dynamic contrast-enhanced MRI could correct or supplement the ultrasonographic and mammographic findings and resulted in the reasonable change of surgical program. The preoperative MRI examination group (n=30) had lower rate of tumor-positive resection margins than control group for invasive ductal carcinoma (23.3% vs 40.0%, P=0.02), but there was no significant difference (21.4% vs 26.9%, P=0.10) between two groups for ductal carcinoma in situ (n=28). The preoperative MRI examination group (n=14) had lower rate of tumor-positive resection margins than control group for the other pathologic types of breast carcinoma (14.3% vs 38.9%, P=0.02). The statistical analysis on the basis of Logistic regression model showed that some main MRI findings, including change surrounding the tumor, distance between tumor and nipple and tumor size, had the significant influence on the rate of tumor-positive resection margins. Conclusion: Preoperative dynamic contrast-enhanced MRI significantly increased the accuracy of resection margins evaluation, and greatly reduced the rate of tumor-positive resection margins after breast conserving surgery in patients with early non-mass breast carcinoma.
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Affiliation(s)
- X S Li
- Department of Magnetic Resonance Imaging, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - Y L Song
- Department of Magnetic Resonance Imaging, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - D C Li
- Department of Pathology, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - H X Zhu
- Department of Magnetic Resonance Imaging, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - L M Meng
- Department of Magnetic Resonance Imaging, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - R R Huang
- Department of Abdominal Surgery, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - S L Wang
- Department of Abdominal Surgery, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - D Wang
- Department of Magnetic Resonance Imaging, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - H Fang
- Department of Magnetic Resonance Imaging, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
| | - H X Fan
- Department of Magnetic Resonance Imaging, Air Force General Hospital of People's Liberation Army, Beijing 100142, China
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108
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Rong QL, Wang SL, Tang Y, Jin J, Song YW, Wang WH, Liu YP, Fang H, Ren H, Liu XF, Yu ZH, Li YX. [The role of postmastectomy radiotherapy in clinical T1-3N1M0 breast cancer patients with pathological negative lymph nodes after neoadjuvant chemotherapy and mastectomy]. Zhonghua Zhong Liu Za Zhi 2017. [PMID: 28635235 DOI: 10.3760/cma.j.issn.0253-3766.2017.06.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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 analyze the outcomes of clinical T1-3N1M0 breast cancer patients with pathological negative axillary lymph nodes (ypN0) after neoadjuvant chemotherapy (NAC) and mastectomy, and investigate the role of postmastectomy radiotherapy (PMRT). Methods: A total of 185 patients with clinical T1-3N1M0 breast cancer treated between 1999 and 2013 were retrospectively reviewed. All patients were treated with NAC and mastectomy, and achieved ypN0. Of them, 89 patients received additional PMRT and 96 patients did not. 101 patients had clinical stage Ⅱ disease. 84 patients had clinical stage Ⅲ disease. The rates of locoregional recurrence (LRR), distant metastasis (DM), disease-free survival (DFS), and overall survival (OS) were calculated using the Kaplan-Meier method, and differences were compared using the log-rank test. Univariate analysis was used to interpret the impact of clinical features and treatment on patients' outcome. Results: The 5-year rates of LRR, DM, DFS, and OS for all patients were 4.5%, 10.4%, 86.6%, and 97.1%, respectively. For patients with and without PMRT, the 5-year LRR rates were 1.1% and 7.5% (P=0.071), the 5-year DM rates were 5.1% and 15.0% (P=0.023), the 5-year DFS rates were 95.0% and 79.0% (P=0.008), and the 5-year OS rates were 100.0% and 94.5% (P=0.089) respectively. In univariate analysis, lymph-vascular space invasion (LVSI) was poor prognostic factor of LRR (P=0.001), < 40 years old and lack of PMRT was a poor prognostic factor for DM (P<0.05), lack of PMRT was a poor prognostic factor for DFS (P=0.008), primary lesion residual and mild-moderate pathological response to NAC were poor prognostic factors for OS (P<0.05). In the subgroup of Stage Ⅲ disease, for patients with and without PMRT, the 5-year LRR rates were 1.9% and 14.4% (P=0.041), the 5-year DFS rates were 91.9% and 67.4% (P=0.022), respectively. In the subgroup of Stage Ⅱ disease, for patients with and without PMRT, the 5-year DM rates were 0 and 11.5% (P=0.044), the 5-year DFS rates were 100.0% and 84.9% (P=0.023), respectively. Conclusions: The LRR rate of clinical T1-3N1M0 breast cancer patients who achieved ypN0 after NAC and mastectomy was low. PMRT decreased the DM rate and increased DFS rate in all patients, and significantly decreased the LRR rate in Stage Ⅲ disease. PMRT should be considered for patients with Stage Ⅲ disease, and further research is warranted to investigate the benefit of PMRT for Stage Ⅱ disease.
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Affiliation(s)
- Q L Rong
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - S L Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Y Tang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - J Jin
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Y W Song
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - W H Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Y P Liu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - H Ren
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - X F Liu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Z H Yu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Y X Li
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
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Nguyen VB, Nguyen AD, Wang SL. Utilization of Fishery Processing By-Product Squid Pens for α-Glucosidase Inhibitors Production by Paenibacillus sp. Mar Drugs 2017; 15:md15090274. [PMID: 28867763 PMCID: PMC5618413 DOI: 10.3390/md15090274] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 08/10/2017] [Accepted: 08/26/2017] [Indexed: 12/16/2022] Open
Abstract
The supernatants (the solution part received after centrifugation) of squid pens fermented by four species of Paenibacillus showed potent inhibitory activity against α-glucosidases derived from yeast (79–98%) and rats (76–83%). The inhibition of acarbose—a commercial antidiabetic drug, used against yeast and rat α-glucosidases—was tested for comparison; it showed inhibitory activity of 64% and 88%, respectively. Other chitinolytic or proteolytic enzyme-producing bacterial strains were also used to ferment squid pens, but no inhibition activity was detected from the supernatants. Paenibacillus sp. TKU042, the most active α-glucosidase inhibitor (aGI)-producing strain, was selected to determine the optimal cultivation parameters. This bacterium achieved the highest aGI productivity (527 µg/mL) when 1% squid pens were used as the sole carbon/nitrogen source with a medium volume of 130 mL (initial pH 6.85) in a 250 mL flask (48% of air head space), at 30 °C for 3–4 d. The aGI productivity increased 3.1-fold after optimization of the culture conditions. Some valuable characteristics of Paenibacillus aGIs were also studied, including pH and thermal stability and specific inhibitory activity. These microbial aGIs showed efficient inhibition against α-glucosidases from rat, yeast, and bacteria, but weak inhibition against rice α-glucosidase with IC50 values of 362, 252, 189, and 773 µg/mL, respectively. In particular, these aGIs showed highly stable activity over a large pH (2–13) and temperature range (40–100 °C). Various techniques, including: Diaoin, Octadecylsilane opened columns, and preparative HPLC coupled with testing bioactivity resulted in isolating a main active compound; this major inhibitor was identified as homogentisic acid (HGA). Notably, HGA was confirmed as a new inhibitor, a non-sugar-based aGI, and as possessing stronger activity than acarbose with IC50, and maximum inhibition values of 220 μg/mL, 95%, and 1510 μg/mL, 65%, respectively. These results suggest that squid pens, an abundant and low-cost fishery processing by-product, constitute a viable source for the production of antidiabetic materials via fermentation by strains of Paenibacillus. This fermented product shows promising applications in diabetes or diabetes related to obesity treatment due to their stability, potent bioactivity, and efficient inhibition against mammalian enzymes.
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Affiliation(s)
- Van Bon Nguyen
- Department of Science and Technology, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam.
| | - Anh Dzung Nguyen
- Institute of Biotechnology and Environment, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam.
| | - San-Lang Wang
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
- Life Science Development Center, Tamkang University, New Taipei City 25137, Taiwan.
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Lahneman DJ, Huffman TJ, Xu P, Wang SL, Grogan T, Qazilbash MM. Broadband near-field infrared spectroscopy with a high temperature plasma light source. Opt Express 2017; 25:20421-20430. [PMID: 29041723 DOI: 10.1364/oe.25.020421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 08/08/2017] [Indexed: 06/07/2023]
Abstract
Scattering-type scanning near-field optical microscopy (S-SNOM) has enormous potential as a spectroscopy tool in the infrared spectral range where it can probe phonon resonances and carrier dynamics at the nanometer lengths scales. However, its applicability is limited by the lack of practical and affordable table-top light sources emitting intense broadband infrared radiation in the 100 cm-1 to 2,500 cm-1 spectral range. This paper introduces a high temperature plasma light source that is both ultra-broadband and has much more radiant power in the infrared spectral range than conventional, table-top thermal light sources such as the globar. We implement this plasma lamp in our near-field optical spectroscopy set up and demonstrate its capability as a broadband infrared nano-spectroscopy light source by obtaining near-field infrared amplitude and phase spectra of the phonon resonances of SiO2 and SrTiO3.
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111
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Zhang YS, Wang SL. [Advance on microRNA and renal cell carcinoma]. Zhonghua Bing Li Xue Za Zhi 2017; 46:575-577. [PMID: 28810303 DOI: 10.3760/cma.j.issn.0529-5807.2017.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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112
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Wang BC, Lin JS, Wang SL. Preface. Res Chem Intermed 2017. [DOI: 10.1007/s11164-016-2423-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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113
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Guo JJ, Liu JY, Wang SL. [Kounis sysdrome secondary to crucian allergy:a case report]. Zhonghua Xin Xue Guan Bing Za Zhi 2017; 45:438-439. [PMID: 28511332 DOI: 10.3760/cma.j.issn.0253-3758.2017.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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114
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Zhong QZ, Wang Z, Tang Y, Rong QL, Wang SL, Jin J, Wang WH, Liu YP, Song YW, Fang H, Chen B, Qi SN, Li N, Tang Y, Zhang JH, Li YX. [Prognostic value of sequencing of radiotherapy and chemotherapy following breast-conserving surgery for patients with breast cancer]. Zhonghua Zhong Liu Za Zhi 2017; 39:308-314. [PMID: 28550675 DOI: 10.3760/cma.j.issn.0253-3766.2017.04.015] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the prognostic value of sequencing of adjuvant radiotherapy and chemotherapy following breast-conserving surgery for patients with breast cancer. Methods: A total of 1 154 patients withT1-2N0-3M0 breast cancer retrospectively reviewed. All patients received sequential radiotherapy and chemotherapy following breast-conserving surgery. Among them, 603 patients received radiotherapy first and 551 patients received chemotherapy first. Log-rank tests were used to determine significance of disease-free survival (DFS) and overall survival (OS) rates in the Kaplan-Meier curve. Results: The 5-year DFS and OS rates for all patients were 93.0% and 97.8%. The 5-year OS rate was 98.6% in the radiotherapy first group and 96.4% in the chemotherapy first group (P=0.191), and the corresponding DFS rate was 92.7% and 93.2% (P=0.430), respectively. Among the patients with Luminal A subtype, the 5-year OS rate was 99.6% in the radiotherapy first group and 97.8% in the chemotherapy first group (P=0.789). Among the patients with Luminal B subtype, the 5-year OS rate was 94.2% and 96.0%, respectively (P=0.680). Among the patients with triple negative breast cancer, the 5-year OS rate was 100% and 90.9%, respectively, with statistically significant differences (P=0.019). Among the patients with HER-2 positive breast cancer, The 5-year DFS rate was 80.1% and 100%, respectively (P=0.045). Conclusions: The OS and DFS rates in the chemotherapy first group are not significantly different from those of radiotherapy first group after breast-conserving surgery. Patients with HER-2 positive breast cancer in chemotherapy first group have a much higher DFS rate than that of radiotherapy first group, whereas patients with triple negative breast cancer in radiotherapy first group have a better OS rate than that of chemotherapy first group. Further research is warranted to investigate the benefit of different molecular types in different sequencing of radiotherapy and chemotherapy after breast-conserving surgery.
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Affiliation(s)
- Q Z Zhong
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - Z Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - Y Tang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - Q L Rong
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - S L Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - J Jin
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - W H Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - Y P Liu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - Y W Song
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - B Chen
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - S N Qi
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - Y Tang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - J H Zhang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
| | - Y X Li
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100021, China
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Nguyen VB, Nguyen AD, Kuo YH, Wang SL. Biosynthesis of α-Glucosidase Inhibitors by a Newly Isolated Bacterium, Paenibacillus sp. TKU042 and Its Effect on Reducing Plasma Glucose in a Mouse Model. Int J Mol Sci 2017; 18:ijms18040700. [PMID: 28346347 PMCID: PMC5412286 DOI: 10.3390/ijms18040700] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/21/2017] [Accepted: 03/22/2017] [Indexed: 12/26/2022] Open
Abstract
Paenibacillus sp. TKU042, a bacterium isolated from Taiwanese soil, produced α-glucosidase inhibitors (aGIs) in the culture supernatant when commercial nutrient broth (NB) was used as the medium for fermentation. The supernatant of fermented NB (FNB) showed stronger inhibitory activities than acarbose, a commercial anti-diabetic drug. The IC50 and maximum α-glucosidase inhibitory activities (aGIA) of FNB and acarbose against α-glucosidase were 81 μg/mL, 92% and 1395 μg/mL, 63%, respectively. FNB was found to be strongly thermostable, retaining 95% of its relative activity, even after heating at 100 °C for 30 min. FNB was also stable at various pH values. Furthermore, FNB demonstrated antioxidant activity (IC50 = 2.23 mg/mL). In animal tests, FNB showed remarkable reductions in the plasma glucose of ICR (Institute of Cancer Research) mice at a concentration of 200 mg/kg. Combining FNB and acarbose enhanced the effect even more, with an added advantage of eliminating diarrhea. According to HPLC (High-performance liquid chromatography) fingerprinting, the Paenibacillus sp. TKU042 aGIs were not acarbose. All of the results suggest that Paenibacillus sp. TKU042 FNB could have potential use as a health food or to treat type 2 diabetes.
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Affiliation(s)
- Van Bon Nguyen
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
- Department of Science and Technology, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam.
| | - Anh Dzung Nguyen
- Institute of Biotechnology and Environment, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam.
| | - Yao-Haur Kuo
- Division of Chinese Materia Medica Development, National Research Institute of Chinese Medicine, Taipei 11221, Taiwan.
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan.
| | - San-Lang Wang
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
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Zou R, Wang M, Wang SL, Li S, Zhang C, Deng L, Lu YF, Chen KP. Adaptive laser shock micro-forming for MEMS device applications. Opt Express 2017; 25:3875-3883. [PMID: 28241598 DOI: 10.1364/oe.25.003875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Laser shock micro-forming is a non-thermal laser forming method that uses laser-induced shockwave to modify surface properties and to adjust shapes and geometry of work pieces. The magnitude and spatial distribution of the laser-induced shockwaves depend on the energy profiles of the laser beam focused on sample surfaces. In this paper, we present an adaptive optical technique to engineer spatial profiles of laser beams to control the shapes, sizes, and locations of the laser-induced shockwaves and the resulting forming features. Using a spatial light modulator, this adaptive laser beam forming tool was used to process free-standing MEMS structures in aluminum, which has led to highly uniform forming features. Shockwave simultaneously excited by multiple laser beams generated by the spatial light modulator and its effects on the micro-forming process were also studied. The results presented in this paper show that the adaptive optics laser beam forming is an effective and flexible method to generate shockwave with various shapes and sizes of wavefront and at multiple locations for laser processing at microscales.
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Wang SL, Li HT, Zhang LJ, Lin ZH, Kuo YH. Conversion of Squid Pen to Homogentisic Acid via Paenibacillus sp. TKU036 and the Antioxidant and Anti-Inflammatory Activities of Homogentisic Acid. Mar Drugs 2016; 14:md14100183. [PMID: 27754313 PMCID: PMC5082331 DOI: 10.3390/md14100183] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/05/2016] [Accepted: 10/07/2016] [Indexed: 11/25/2022] Open
Abstract
The culture supernatant of Paenibacillus sp. TKU036, a bacterium isolated from Taiwanese soils, showed high antioxidant activity (85%) when cultured in a squid pen powder (SPP)-containing medium at 37 °C for three days. Homogentisic acid (2,5-dihydroxyphenylacetic acid, HGA) was isolated and found to be the major antioxidant in the culture supernatant of the SPP-containing medium fermented by Paenibacillus sp. TKU036. Tryptophan was also present in the culture supernatant. The results of high-performance liquid chromatography (HPLC) fingerprinting showed that HGA and tryptophan were produced via fermentation but did not pre-exist in the unfermented SPP-containing medium. Neither HGA nor tryptophan was found in the culture supernatants obtained from the fermentation of nutrient broth or other chitinous material, i.e., medium containing shrimp head powder, by Paenibacillus sp. TKU036. The production of HGA via microorganisms has rarely been reported. In this study, we found that squid pen was a potential carbon and nitrogen source for Paenibacillus sp. Tryptophan (105 mg/L) and HGA (60 mg/L) were recovered from the culture supernatant. The isolated HGA was found to have higher antioxidant activity (IC50 = 6.9 μg/mL) than α-tocopherol (IC50 = 17.6 μg/mL). The anti-inflammatory activity of the isolated HGA (IC50 = 10.14 μg/mL) was lower than that of quercetin (IC50 = 1.14 μg/mL). As a result, squid pen, a fishery processing byproduct, is a valuable material for the production of tryptophan and the antioxidant and anti-inflammatory HGA via microbial conversion.
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Affiliation(s)
- San-Lang Wang
- Life Science Development Center, Tamkang University, No. 151, Yingchuan Rd., Tamsui, New Taipei City 25137, Taiwan.
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
| | - Hsin-Ting Li
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
| | - Li-Jie Zhang
- Division of Chinese Materia Medica Development, National Research Institute of Chinese Medicine, Taipei 11221, Taiwan.
| | - Zhi-Hu Lin
- Division of Chinese Materia Medica Development, National Research Institute of Chinese Medicine, Taipei 11221, Taiwan.
| | - Yao-Haur Kuo
- Division of Chinese Materia Medica Development, National Research Institute of Chinese Medicine, Taipei 11221, Taiwan.
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan.
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Liang TW, Chen WT, Lin ZH, Kuo YH, Nguyen AD, Pan PS, Wang SL. An Amphiprotic Novel Chitosanase from Bacillus mycoides and Its Application in the Production of Chitooligomers with Their Antioxidant and Anti-Inflammatory Evaluation. Int J Mol Sci 2016; 17:E1302. [PMID: 27517920 PMCID: PMC5000699 DOI: 10.3390/ijms17081302] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 07/30/2016] [Accepted: 08/05/2016] [Indexed: 12/23/2022] Open
Abstract
The objectives of this investigation were to produce a novel chitosanase for application in industries and waste treatment. The transformation of chitinous biowaste into valuable bioactive chitooligomers (COS) is one of the most exciting applications of chitosanase. An amphiprotic novel chitosanase from Bacillus mycoides TKU038 using squid pen powder (SPP)-containing medium was retrieved from a Taiwan soil sample, which was purified by column chromatography, and characterized by biochemical protocol. Extracellular chitosanase (CS038) was purified to 130-fold with a 35% yield, and its molecular mass was roughly 48 kDa. CS038 was stable over a wide range of pH values (4-10) at 50 °C and exhibited an optimal temperature of 50 °C. Interestingly, the optimum pH values were estimated as 6 and 10, whereas CS038 exhibited chitosan-degrading activity (100% and 94%, respectively). CS038 had Km and Vmax values of 0.098 mg/mL and 1.336 U/min, separately, using different concentrations of water-soluble chitosan. A combination of the high performance liquid chromatography (HPLC) and matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometer data revealed that the chitosan oligosaccharides obtained from the hydrolysis of chitosan by CS038 comprise oligomers with multiple degrees of polymerization (DP), varying from 3-9, as well as CS038 in an endolytic fashion. The TKU038 culture supernatant and COS mixture exhibited 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activities. The COS activities were dose dependent and correlated to their DP. The COS with high DP exhibited enhanced DPPH radical scavenging capability compared with COS with low DP. Furthermore, the COS exhibited inhibitory behavior on nitric oxide (NO) production in murine RAW 264.7 macrophage cells, which was induced by Escherichia coli O111 lipopolysaccharide (LPS). The COS with low DP possesses a more potent anti-inflammatory capability to decrease NO production (IC50, 76.27 ± 1.49 µg/mL) than that of COS with high DP (IC50, 82.65 ± 1.18 µg/mL). Given its effectiveness in production and purification, acidophilic and alkalophilic properties, stability over ranges of pH values, ability to generate COS, antioxidant activity, and anti-inflammatory, CS038 has potential applications in SPP waste treatment and industries for COS production as a medical prebiotic.
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Affiliation(s)
- Tzu-Wen Liang
- Life Science Development Center, Tamkang University, New Taipei City 25137, Taiwan.
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
| | - Wei-Ting Chen
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
| | - Zhi-Hu Lin
- Division of Chinese Materia Medica Development, National Research Institute of Chinese Medicine, Taipei 11221, Taiwan.
| | - Yao-Haur Kuo
- Division of Chinese Materia Medica Development, National Research Institute of Chinese Medicine, Taipei 11221, Taiwan.
| | - Anh Dzung Nguyen
- Institute of Biotechnology and Environment, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam.
| | - Po-Shen Pan
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
| | - San-Lang Wang
- Life Science Development Center, Tamkang University, New Taipei City 25137, Taiwan.
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
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Xu HJ, Gao Z, Chen H, Yu H, Jia RF, Wang SL, Peng H, Yang Y, Chen K, Huang WN. [Preliminary analysis of influencing factors on source of snoring sound]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1058-1062. [PMID: 29798038 DOI: 10.13201/j.issn.1001-1781.2016.13.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the main factors affecting the source of snoring sound of snoring patients.Method:Seventy-three patients with either simple snoring or obstructive sleep apnea-hypopnea syndrom(AHI≤40) underwent routine ENT examination,CT scanning(in awake condition) and drug-induced sleep endoscopy.The sources of snoring sound were observed.The neck circumference,body mass index and CT data were measured.Result:The sources of snoring sound of the 73 cases were divided into three types in general: palatal fluttering based group(Group Ⅰ),lateral wall vibration based group(Group Ⅱ) and palatal fluttering together with vibration of lateral wall based group(Group Ⅲ).The minimum lateral caliber of retropalatal region and retroglossal region,the ratio of minimum anteroposterior/ lateral caliber of the two regions,the thickness of pharyngeal lateral wall had statistical differences.The main influencing factors on the source of snoring sound between Group Ⅱ and Group Ⅰ were the ratio of minimum anteroposterior/lateral caliber of retropalatal region and the mean thickness of pharyngeal lateral wall.The influencing factor between Group Ⅲ and Group Ⅰ was the mean thickness of pharyngeal lateral wall.Conclusion:The ratio of minimum anteroposterior/lateral caliber of retropalatal region and the mean thickness of pharyngeal lateral wall are the main factors affecting the source of snoring sound of snoring patients.
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Affiliation(s)
- H J Xu
- Department of Otorhinolaryngology,Beijing Hospital,Beijing,100730,China
| | - Z Gao
- Department of Otorhinolaryngology,Beijing Hospital,Beijing,100730,China
| | - H Chen
- Department of Otorhinolaryngology,Beijing Hospital,Beijing,100730,China
| | - H Yu
- Department of Anesthesiology,Beijing Hospital
| | - R F Jia
- Department of Anesthesiology,Beijing Hospital
| | - S L Wang
- Department of Radiology,Beijing Hospital
| | - H Peng
- Department of Otorhinolaryngology,Beijing Hospital,Beijing,100730,China
| | - Y Yang
- Department of Otorhinolaryngology,Beijing Hospital,Beijing,100730,China
| | - K Chen
- Department of Otorhinolaryngology,Beijing Hospital,Beijing,100730,China
| | - W N Huang
- Department of Otorhinolaryngology,Beijing Hospital,Beijing,100730,China
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Wang Z, Wang WH, Wang SL, Jin J, Song YW, Liu YP, Ren H, Fang H, Tang Y, Chen B, Qi SN, Lu NN, Li N, Tang Y, Liu XF, Yu ZH, Li YX. [Prognostic differences of phenotypes in pT1-2N0 invasive breast cancer: a large cohort study with cluster analysis]. Zhonghua Zhong Liu Za Zhi 2016; 38:440-447. [PMID: 27346402 DOI: 10.3760/cma.j.issn.0253-3766.2016.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To find phenotypic subgroups of patients with pT1-2N0 invasive breast cancer by means of cluster analysis and estimate the prognosis and clinicopathological features of these subgroups. METHODS From 1999 to 2013, 4979 patients with pT1-2N0 invasive breast cancer were recruited for hierarchical clustering analysis. Age (≤40, 41-70, 70+ years), size of primary tumor, pathological type, grade of differentiation, microvascular invasion, estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER-2) were chosen as distance metric between patients. Hierarchical cluster analysis was performed using Ward's method. Cophenetic correlation coefficient (CPCC) and Spearman correlation coefficient were used to validate clustering structures. RESULTS The CPCC was 0.603. The Spearman correlation coefficient was 0.617 (P<0.001), which indicated a good fit of hierarchy to the data. A twelve-cluster model seemed to best illustrate our patient cohort. Patients in cluster 5, 9 and 12 had best prognosis and were characterized by age >40 years, smaller primary tumor, lower histologic grade, positive ER and PR status, and mainly negative HER-2. Patients in the cluster 1 and 11 had the worst prognosis, The cluster 1 was characterized by a larger tumor, higher grade and negative ER and PR status, while the cluster 11 was characterized by positive microvascular invasion. Patients in other 7 clusters had a moderate prognosis, and patients in each cluster had distinctive clinicopathological features and recurrent patterns. CONCLUSIONS This study identified distinctive clinicopathologic phenotypes in a large cohort of patients with pT1-2N0 breast cancer through hierarchical clustering and revealed different prognosis. This integrative model may help physicians to make more personalized decisions regarding adjuvant therapy.
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Affiliation(s)
- Z Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - W H Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S L Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J Jin
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y W Song
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y P Liu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Ren
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Fang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Tang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - B Chen
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S N Qi
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N N Lu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Tang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X F Liu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z H Yu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y X Li
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Song J, Li PG, Pan AQ, Liu H, Zhan JM, Wang SL, Wu XP, Qian HQ. Poly(9,9-dihexylfluorene)/ZnO Nanoparticles Based Inorganic/Organic Heterojunction Structure: Electrical and Photoconductivity Properties. J Nanosci Nanotechnol 2016; 16:6005-6010. [PMID: 27427663 DOI: 10.1166/jnn.2016.11044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
ZnO nanoparticles in size of -5 nm were synthesized by wet chemical method, P-type (9,9-dihexylfluorene) (PFH) and the synthesized n-type ZnO nanoparticles were used to fabricate PFH/ZnO heterojunction structure using spin coating method. The current-voltage characteristic of the heterojunction demonstrates the typical p-n junction rectifying behavior, but such rectifying behavior disappeared in vacuum, which is considered to be related to the oxygen in ZnO. The heterojunction shown an fast and stable response to UV and blue light. The responsivity of heterostruture can be tuned by the bias. The conductivities of organic/inorganic heterojunction increase with the increase of temperature, and the derived active energy (Ea) decreased linearly with the increase of bias.
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Abstract
OBJECTIVE The aim of this study was to construct a eukaryotic expression plasmid with a short hairpin RNA (shRNA) targeting Livin in order to obtain a stably transfected Hep-2 cell line with a reduced expression of Livin. METHODS The shRNA targeting Livin mRNA was designed, and a shRNA plasmid and a negative control plasmid were constructed. After amplification in E. coli, restriction endonuclease digestion and sequence confirmation, the plasmids were transfected into Hep-2 cells using Lipofectamine 2000. The stably transfected cell line was screened using G418, and inhibition of Livin mRNA and protein levels were detected using real-time PCR and western blotting, respectively. RESULTS pGenesil-Livin-shRNA eukaryotic expression plasmid was successfully constructed and identified by sequencing. Green fluorescent protein (GFP) expression was observed in Hep-2 cells transfected with shRNA plasmids by fluorescence microscopy. The expression levels of Livin mRNA and protein decreased significantly in Hep-2 cells transfected with the shRNA recombinant plasmid. The mRNA level was reduced by 47.17 %, and the protein level was reduced by 34.25 %. CONCLUSION The shRNA eukaryotic expression plasmid targeting Livin was successfully constructed, which could significantly inhibit the expression of Livin in laryngeal cancer Hep-2 cells. This provides a basis for future research on the function of Livin in Hep-2 cells, and gene therapy for laryngeal cancer.
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Zeng YC, Wu R, Xing R, Chi F, Wang SL, Chen XD, Xuan Y, Wu LN, Duan QY, Tang MY, Niu N, Sun YN, Fan GL, Wang HM. Radiation-enhancing effect of sodium glycididazole in patients suffering from non-small cell lung cancer with multiple brain metastases: A randomized, placebo-controlled study. Cancer Radiother 2016; 20:187-92. [PMID: 27052296 DOI: 10.1016/j.canrad.2016.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 02/05/2016] [Accepted: 02/14/2016] [Indexed: 01/06/2023]
Abstract
PURPOSE Median survival of patients with brain metastases from non-small cell lung cancer is poor. This study was to investigate the radiation-enhancing effect of sodium glycididazole combined with whole-brain radiotherapy of multiple brain metastases from non-small cell lung cancer. PATIENTS AND METHODS Sixty-four patients with multiple brain metastases from non-small cell lung cancer were included: the study group (n=32) received whole-brain radiotherapy combined with sodium glycididazole at a dose of 700mg/m(2) intravenous infusion 30minutes before radiotherapy, three times a week; the control group (n=32) only received whole-brain radiotherapy. The primary end point was central nervous system (CNS) progression-free survival and overall survival. The treatment-related toxicity was also recorded. RESULTS The CNS disease control rate was better (90.6% vs 65.6%, P=0.016) in the study group than in the control group at 3 month of follow-up. The median CNS progression-free survival time was longer in the study group than in the control group (7.0 months vs 4.0 months, P=0.038). There was no significant difference of the median overall survival time between the study group and the control group (11.0 months vs 9.0 months, P=0.418). On the other hand, the treatment-related toxicity showed no statistically significant difference between these two groups (P>0.05). CONCLUSIONS The study indicated that sodium glycididazole was an effective, promising radiation-enhancing agent that improved CNS disease control rate, extended the median CNS progression-free survival time and was well tolerated in patients suffering from non-small cell lung cancer with multiple brain metastases.
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Affiliation(s)
- Y C Zeng
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - R Wu
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China.
| | - R Xing
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - F Chi
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - S L Wang
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - X D Chen
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - Y Xuan
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - L N Wu
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - Q Y Duan
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - M Y Tang
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - N Niu
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - Y N Sun
- Department of Medical Oncology, Cancer Center, Shengjing Hospital of China Medical University, 39, Huaxiang Road, Shenyang 110022, China
| | - G L Fan
- Department of Otorhinolaryngology, Harbin First Hospital, 151, Diduan Street, Harbin 150010, China
| | - H M Wang
- Department of Radiation Oncology, Nanfang Hospital of Southern Medical University, Guangzhou 510515, China
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Gao ZH, Hu L, Liu GL, Wei FL, Liu Y, Liu ZH, Fan ZP, Zhang CM, Wang JS, Wang SL. Bio-Root and Implant-Based Restoration as a Tooth Replacement Alternative. J Dent Res 2016; 95:642-9. [PMID: 26976131 DOI: 10.1177/0022034516639260] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
We previously reported that dental stem cell-mediated bioengineered tooth root (bio-root) regeneration could restore tooth loss in a miniature pig model. As a potential new method for tooth restoration, it is essential to compare this method with the widely used commercial dental implant-based method of tooth restoration. Tooth loss models were created by extracting mandibular incisors from miniature pigs. Allogeneic periodontal ligament stem cells (PDLSCs) and dental pulp stem cells (DPSCs) were isolated and cultured. A PDLSC sheet was prepared by adding 20.0 µg/mL vitamin C to the culture medium; in addition, a hydroxyapatite tricalcium phosphate (HA/TCP)/DPSC graft was fabricated and cultured in a 3-dimensional culture system. A total of 46 bio-root implantations and 9 dental implants were inserted, and crown restorations were performed 6 mo after implantation. Histological, radiological, biomechanical, and elemental analyses were used to evaluate and compare tissue-engineered bio-roots and dental implants to the natural tooth roots. After 6 mo, both computed tomography scans and histological examinations showed that root-like structures and dentin-like tissues had formed. Three months after crown restoration, clinical assessments revealed that tooth function was equivalent in the regenerated bio-root and the dental implant. Biomechanical testing showed that the bio-roots were similar to natural tooth roots in compressive strength, modulus of elasticity, and torsional force; however, these properties were significantly higher in the dental implants. Elemental analysis revealed a higher similarity in elemental composition between bio-roots and natural tooth roots than between bio-roots and dental implants. However, the dental implant success rate was 100% (9 of 9) and the bio-root success rate was only 22% (10 of 46). Taken together, we showed that an allogeneic HA/TCP/DPSC/PDLSC sheet could successfully build a bio-root with structure and function similar to the natural tooth root; however, tissue engineering procedures must be optimized further to improve the success rate.
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Affiliation(s)
- Z H Gao
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - L Hu
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - G L Liu
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - F L Wei
- Department of Orthodontics, Shandong Provincial Key Laboratory of Oral Biomedicine, School of Stomatology, Shandong University, Jinan, China
| | - Y Liu
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Z H Liu
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - Z P Fan
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - C M Zhang
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - J S Wang
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
| | - S L Wang
- Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China Department of Biochemistry and Molecular Biology, Capital Medical University School of Basic Medical Sciences, Beijing, China
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Hagimori M, Yokota K, Fukuda A, Nishimura Y, Satodani R, Wang BC, Wei HH, Wang SL, Shigemitsu Y, Tominaga Y. Synthesis of Indeno[1,2- d]pyrimidin-5-Ones and Their Fluorescence in Solid State. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Masayori Hagimori
- Faculty of Pharmaceutical Sciences of Nagasaki International University; 2825-7, Huis Ten Bosch Sasebo 859-3298 Japan
| | - Kenichirou Yokota
- Faculty of Environmental Studies; Nagasaki University; 1-14, Bunkyo-machi Nagasaki 852-8521 Japan
| | - Ai Fukuda
- Faculty of Environmental Studies; Nagasaki University; 1-14, Bunkyo-machi Nagasaki 852-8521 Japan
| | - Yasuhisa Nishimura
- Faculty of Environmental Studies; Nagasaki University; 1-14, Bunkyo-machi Nagasaki 852-8521 Japan
| | - Ryousuke Satodani
- Faculty of Environmental Studies; Nagasaki University; 1-14, Bunkyo-machi Nagasaki 852-8521 Japan
| | - Bo-Cheng Wang
- Department of Chemistry; Tamkang University; Tamsui 251 Taiwan
| | - Ho-Hsiang Wei
- Department of Chemistry; Tamkang University; Tamsui 251 Taiwan
| | - San-Lang Wang
- Department of Chemistry; Tamkang University; Tamsui 251 Taiwan
| | - Yasuhiro Shigemitsu
- Technology Center of Nagasaki; 2-1308-8, Ikeda Omura Nagasaki 856-0026 Japan
| | - Yoshinori Tominaga
- Faculty of Environmental Studies; Nagasaki University; 1-14, Bunkyo-machi Nagasaki 852-8521 Japan
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Liang TW, Tseng SC, Wang SL. Production and Characterization of Antioxidant Properties of Exopolysaccharide(s) from Peanibacillus mucilaginosus TKU032. Mar Drugs 2016; 14:md14020040. [PMID: 26907304 PMCID: PMC4771993 DOI: 10.3390/md14020040] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/29/2016] [Accepted: 02/02/2016] [Indexed: 11/30/2022] Open
Abstract
Natural polysaccharides have received much attention due to their wide range of applications. Although most microbial exopolysaccharides (EPSs) use sugars as the major carbon source, such as glucose or sucrose, in this study, EPSs were induced from a squid pen powder (SPP)-containing medium by Paenibacillus mucilaginosus TKU032, a bacterial strain isolated from Taiwanese soil. Under the optimal culture conditions, the maximum EPS yield (14.8 g/L) was obtained. MALDI-TOF MS analysis of an EPS fraction purified by gel filtration revealed two mass peaks with molecular weights of ∼1.05 × 104 and ∼1.35 × 104 Da, respectively. The analysis of the hydrolysates of TKU032 EPS with cellulase, pectinase or α-amylase indicated that the glycosidic bond of TKU032 EPS is most likely an α-1,4 glycosidic bond and the hydrolysates are similar to those of starch. In addition, the purified EPS demonstrated strong antioxidant abilities.
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Affiliation(s)
- Tzu-Wen Liang
- Life Science Development Center, Tamkang University, No. 151, Yingchuan Rd., Tamsui, New Taipei City 25137, Taiwan.
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
| | - Shih-Chun Tseng
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
| | - San-Lang Wang
- Life Science Development Center, Tamkang University, No. 151, Yingchuan Rd., Tamsui, New Taipei City 25137, Taiwan.
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
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127
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Nguyen VB, Nguyen QV, Nguyen AD, Wang SL. Screening and evaluation of α-glucosidase inhibitors from indigenous medicinal plants in Dak Lak Province, Vietnam. Res Chem Intermed 2016. [DOI: 10.1007/s11164-016-2434-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yi Q, Cao Y, Liu OS, Lu YQ, Wang JS, Wang SL, Yao R, Fan ZP. Spatial and temporal expression of histone demethylase, Kdm2a, during murine molar development. Biotech Histochem 2015; 91:137-44. [PMID: 26720400 DOI: 10.3109/10520295.2015.1106586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The histone demethylase, lysine (K)-specific demethylase 2A (Kdm2a), is highly conserved and expressed ubiquitously. Kdm2a can regulate cell proliferation and osteo/dentinogenic, adipogenic and chondrogenic differentiation of mesenchymal stem cells (MSCs) derived from dental tissue. We used quantitative real-time RT-PCR analysis and immunohistochemistry to detect Kdm2a expression during development of the murine molar at embryonic days E12, E14, E16 and E17 and postnatal days P3 and P14. Immunohistochemistry results showed no positive staining of Kdm2a at E12. At E14, Kdm2a was expressed weakly in the inner enamel epithelium, stellate reticulum cells and dental sac. At E16, Kdm2a was expressed mainly in the inner and outer enamel epithelium, stratum intermedium and dental sac, but weaker staining was found in cervical loop and dental papilla cells adjacent to the basement membrane. At E17, the strongest Kdm2a staining was detected in the ameloblasts and stronger Kdm2a staining also was detected in the stratum intermedium, outer enamel epithelium and dental papilla cells compared to the expression at E16. Postnatally, we found that Kdm2a was localized in secretory and mature ameloblasts and odontoblasts, and dentin was unstained. Real-time RT-PCR showed that Kdm2a mRNA levels in murine germ cells increased from E12 to E14 and from E14 to E16; no significant change occurred at E16, E17 or P3, then the levels decreased at P14 compared to P3. Kdm2a expression may be closely related to cell proliferation, to ameloblast and odontoblast differentiation and to the secretion of extracellular enamel and dentin during murine tooth development.
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Affiliation(s)
- Q Yi
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology , Beijing , China.,d Xiangya Stomatology Hospital, Central South University , Changsha, Hunan , China.,e School of Stomatology, Central South University , Changsha, Hunan , China
| | - Y Cao
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology , Beijing , China.,f Department of General Dentistry , Capital Medical University School of Stomatology , Beijing , China
| | - O S Liu
- d Xiangya Stomatology Hospital, Central South University , Changsha, Hunan , China.,e School of Stomatology, Central South University , Changsha, Hunan , China
| | - Y Q Lu
- d Xiangya Stomatology Hospital, Central South University , Changsha, Hunan , China.,e School of Stomatology, Central South University , Changsha, Hunan , China
| | - J S Wang
- b Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology , Beijing , China.,c Department of Biochemistry and Molecular Biology , Capital Medical University School of Basic Medical Sciences , Beijing , China
| | - S L Wang
- b Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology , Beijing , China.,c Department of Biochemistry and Molecular Biology , Capital Medical University School of Basic Medical Sciences , Beijing , China
| | - R Yao
- g Department of Pediatrics , Stomatological Hospital of Nankai University , Tianjin , China
| | - Z P Fan
- a Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology , Beijing , China
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Xu YJ, Li SY, Cheng Q, Chen WK, Wang SL, Ren Y, Miao CH. Effects of anaesthesia on proliferation, invasion and apoptosis of LoVo colon cancer cells in vitro. Anaesthesia 2015; 71:147-54. [PMID: 26669824 DOI: 10.1111/anae.13331] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/20/2015] [Indexed: 01/24/2023]
Abstract
Tumour cell proliferation, invasion and apoptosis are crucial steps in tumour metastasis. We evaluated the effect of serum from patients undergoing colon cancer surgery receiving thoracic epidural and propofol anaesthesia on colon cancer cell biology. Patients were randomly assigned to receive propofol anaesthesia with a concomitant thoracic epidural (PEA, n = 20) or sevoflurane anaesthesia with opioid analgesia (SGA, n = 20). Venous blood was obtained before induction of anaesthesia and 24 hours postoperatively. The LoVo colon cancer cells were cultured with patient serum from both groups and the effects on proliferation, invasion and apoptosis were measured. Twenty-four hours after surgery, the absorbance value of LoVo cells at 10% serum concentration from PEA was decreased when compared with SGA (0.302 (0.026) vs 0.391 (0.066), p = 0.005). The inhibitory rate of LoVo cells at 10% serum concentration from PEA was higher than that from SGA (p = 0.004) 24 h after surgery. The number of invasive LoVo cells at 10% serum concentration from PEA was reduced when compared with SGA (44 (4) vs 62 (4), p < 0.001). Exposure of LoVo cells to postoperative serum from patients receiving PEA led to a higher luminescence ratio (apoptosis) than those receiving SGA (0.36 (0.04) vs 0.27 (0.05), p < 0.001). Serum from patients receiving PEA for colon cancer surgery inhibited proliferation and invasion of LoVo cells and induced apoptosis in vitro more than that from patients receiving SGA. Anaesthetic technique might influence the serum milieu in a way that affects cancer cell biology and, thereby, tumour metastastasis.
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Affiliation(s)
- Y J Xu
- Department of Anaesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - S Y Li
- Pathology Office, Shanghai University of Tranditional Chinese Medicine, Shanghai, China
| | - Q Cheng
- Department of Anaesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - W K Chen
- Department of Anaesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - S L Wang
- Department of Anaesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Y Ren
- Department of Anaesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - C H Miao
- Department of Anaesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Duan HY, Liu DM, Qian P, Wang SL, Yan LJ, Wu JT, Yang HT, Fan XW, Chu YJ. Effect of atorvastatin on plasma NT-proBNP and inflammatory cytokine expression in patients with heart failure. Genet Mol Res 2015; 14:15739-48. [PMID: 26634541 DOI: 10.4238/2015.december.1.25] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to explore the effect of atorvastatin intervention on plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) and inflammatory cytokine levels in patients with heart failure (HF). One hundred and twenty-three HF patients were selected from our hospital and randomly divided into control (N = 61) and observation (N = 62) groups; the former received conventional treatment, while the latter were given conventional treatment combined with atorvastatin. Plasma NT-proBNP, inflammatory cytokines [high-sensitive C-reactive protein (hs-CRP), interleukin (IL)-6, IL-10] and cardiac function [left ventricular end-diastolic dimension (LVEDD), left ventricular ejection fraction (LVEF), end-diastolic maximum flow rate ratio (E/A)] were compared among groups. The effective rate of treating HF significantly increased after atorvastatin treatment. The plasma NT-proBNP, IL-6, IL-10, hs-CRP, and LVEDD levels significantly decreased (P < 0.05), while the LVEF and E/A levels significantly increased (P < 0.05) in the observation group compared to the control group and before intervention. The NT-proBNP and cytokine levels significantly differed among patients with different classes of heart function (P < 0.05); the NT-proBNP and cytokine levels increased with the severity of heart function. Pearson's correlation analysis revealed a negative correlation between the NT-proBNP and inflammatory cytokine levels and LVEF and E/A values, and a positive correlation between these factors and LVEDD (P < 0.05). In conclusion, atorvastatin significantly improves cardiac function; the mechanism atorvastatin action was related to the decrease in plasma NT-proBNP and inflammatory cytokine levels.
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Affiliation(s)
- H Y Duan
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - D M Liu
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - P Qian
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - S L Wang
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - L J Yan
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - J T Wu
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - H T Yang
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - X W Fan
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
| | - Y J Chu
- Department of Cardiovascular Medicine, Henan Provincial People's Hospital, Zhengzhou, China
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132
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Lin HT, Hsu CH, Tsai HJ, Lin CH, Lo PY, Wang SL, Wang LC. Influenza A plasma and serum virus antibody detection comparison in dogs using blocking enzyme-linked immunosorbent assay. Vet World 2015; 8:580-3. [PMID: 27047138 PMCID: PMC4774716 DOI: 10.14202/vetworld.2015.580-583] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Revised: 03/31/2015] [Accepted: 04/07/2015] [Indexed: 11/18/2022] Open
Abstract
Background and Aim: The influenza A virus (IAV) is an important zoonotic pathogen with infections also reported in dogs. IAV infections can be detected through the presence of antibodies using the enzyme-linked immunosorbent assay (ELISA). Serum is the only standard sample source; however, there is no information on the availability of other sample sources for IAV antibody detection in dogs. Compared with serum, plasma is more widely employed in most animal hospitals. The object of this study is to investigate whether plasma collected in ethylenediaminetetraacetic acid (EDTA) tubes (EDTA plasma) or heparin tubes (heparin plasma) could be used in the ELISA protocol instead of serum for IAV antibody detection in dogs. Materials and Methods: Totally, 82 matched EDTA plasma and serum sample pairs and 79 matched heparin plasma and serum sample pairs were employed using blocking enzyme-linked immunosorbent assay (bELISA). The agreement and correlation between the plasma (EDTA or heparin plasma) and serum were assessed using the agreement index kappa (kD) calculation and Pearson correlation coefficient, respectively. Results: The agreement index kD of EDTA plasma and serum was 1.0, and that of heparin plasma and serum was 0.85. The Pearson correlation coefficient of EDTA plasma and serum was 0.87 (p<0.01), and that of heparin plasma and serum was 0.82 (p<0.01). Conclusion: The results proved that plasma, especially EDTA plasma, could be substituted for serum in the bELISA test. This might greatly expand the clinical applicability of IAV antibody detection in dogs.
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Affiliation(s)
- H T Lin
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - C H Hsu
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - H J Tsai
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - C H Lin
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - P Y Lo
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - S L Wang
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - L C Wang
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
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Wei FL, Wang JH, Ding G, Yang SY, Li Y, Hu YJ, Wang SL. Mechanical force-induced specific MicroRNA expression in human periodontal ligament stem cells. Cells Tissues Organs 2015; 199:353-63. [PMID: 25823370 DOI: 10.1159/000369613] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2014] [Indexed: 01/14/2023] Open
Abstract
It remains unclear how the expression of microRNAs (miRNAs) in human periodontal ligament stem cells (PDLSCs) might respond to mechanical stretch. To investigate specific miRNA expression in stretched PDLSCs, we used a Flexcell® FX-5000™ tension system to achieve external mechanical stimulation. Then, a custom-designed microarray assay was performed to investigate and describe the genome-wide differential expression of miRNAs in normal and stretched PDLSCs. Finally, we implemented integrative miRNA target prediction and network analysis approaches to construct an interaction network of the key miRNAs and their putative targets. We found that stretching induced morphological changes and increased alkaline phosphatase (ALP) activity, runt-related transcription factor 2 (RUNX2), osteocalcin (OCN), and bone sialoprotein (BSP) expression in PDLSCs. The microarray data showed that 53 miRNAs were differentially expressed with stretching. With an interaction network, we examined the connections between 10 selected key miRNAs and their putative target genes, which were related to mechanical force. The results from the interaction network provided a basis for postulating the functional roles of miRNAs in PDLSCs.
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Affiliation(s)
- F L Wei
- Department of Orthodontics, Shandong Provincial Key Laboratory of Oral Biomedicine, School of Stomatology, Shandong University, Jinan, PR China
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Zheng Y, Chen M, He L, Marão HF, Sun DM, Zhou J, Kim SG, Song S, Wang SL, Mao JJ. Mesenchymal dental pulp cells attenuate dentin resorption in homeostasis. J Dent Res 2015; 94:821-7. [PMID: 25762594 DOI: 10.1177/0022034515575347] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Dentin in permanent teeth rarely undergoes resorption in development, homeostasis, or aging, in contrast to bone that undergoes periodic resorption/remodeling. The authors hypothesized that cells in the mesenchymal compartment of dental pulp attenuate osteoclastogenesis. Mononucleated and adherent cells from donor-matched rat dental pulp (dental pulp cells [DPCs]) and alveolar bone (alveolar bone cells [ABCs]) were isolated and separately cocultured with primary rat splenocytes. Primary splenocytes readily aggregated and formed osteoclast-like cells in chemically defined osteoclastogenesis medium with 20 ng/mL of macrophage colony-stimulating factor (M-CSF) and 50 ng/mL of receptor activator of nuclear factor κB ligand (RANKL). Strikingly, DPCs attenuated osteoclastogenesis when cocultured with primary splenocytes, whereas ABCs slightly but significantly promoted osteoclastogenesis. DPCs yielded ~20-fold lower RANKL expression but >2-fold higher osteoprotegerin (OPG) expression than donor-matched ABCs, yielding a RANKL/OPG ratio of 41:1 (ABCs:DPCs). Vitamin D3 significantly promoted RANKL expression in ABCs and OPG in DPCs. In vivo, rat maxillary incisors were atraumatically extracted (without any tooth fractures), followed by retrograde pulpectomy to remove DPCs and immediate replantation into the extraction sockets to allow repopulation of the surgically treated root canal with periodontal and alveolar bone-derived cells. After 8 wk, multiple dentin/root resorption lacunae were present in root dentin with robust RANKL and OPG expression. There were areas of dentin resoprtion alternating with areas of osteodentin formation in root dentin surface in the observed 8 wk. These findings suggest that DPCs of the mesenchymal compartment have an innate ability to attenuate osteoclastogenesis and that this innate ability may be responsible for the absence of dentin resorption in homeostasis. Mesenchymal attenuation of dentin resorption may have implications in internal resorption in the root canal, pulp/dentin regeneration, and root resorption in orthodontic tooth movement.
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Affiliation(s)
- Y Zheng
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA Department of Endodontics, Capital Medical University School of Stomatology, Beijing, China
| | - M Chen
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - L He
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - H F Marão
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - D M Sun
- Department of Neuroscience, Rutgers University, Piscataway, NJ, USA
| | - J Zhou
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S G Kim
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S Song
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
| | - S L Wang
- Department of Endodontics, Capital Medical University School of Stomatology, Beijing, China
| | - J J Mao
- Center for Craniofacial Regeneration, Columbia University, New York, NY, USA
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Zeng YC, Wu R, Xiao YP, Chi F, Xue M, Zhang ZY, Xing R, Zhong WZ, Wang SL, Tian X, Chen W, Chen JJ, Wu LN. Serum C-reactive protein predicts poor prognosis in patients with locoregionally advanced nasopharyngeal carcinoma treated with chemoradiotherapy. ACTA ACUST UNITED AC 2015; 22:20-4. [PMID: 25684985 DOI: 10.3747/co.22.2178] [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] [Indexed: 01/26/2023]
Abstract
BACKGROUND We aimed to evaluate the association of serum C-reactive protein (crp) with prognosis in patients with locoregionally advanced nasopharyngeal carcinoma treated with chemoradiotherapy. METHODS We retrospectively reviewed 79 patients with locoregionally advanced nasopharyngeal carcinoma (cT3-4N0-3M0) treated with chemoradiotherapy. Chemoradiotherapy consisted of external-beam radiotherapy to the nasopharynx (70-80 Gy), the lymph node-positive area (60-70 Gy), and the lymph node-negative area (50-60 Gy) combined with 3 cycles of various platinum-based regimens delivered at 3-week intervals. Elevated crp was defined as more than 8 mg/L. The survival rate was calculated using the Kaplan-Meier method, and univariate and multivariate analyses (Cox proportional hazards model) were used to identify factors significantly associated with prognosis. RESULTS During the median follow-up of 3.9 years (range: 1-5.5 years), 23 patients died from nasopharyngeal cancer. The 5-year cancer-specific survival (css) rate was 62.90%. Before chemoradiotherapy, 18 patients had high serum crp; the css rate in that subgroup was significantly worse than the rate in the remaining patients (p = 0.0002). Multivariate analysis showed that crp was an independent prognostic indicator of css, with a hazard ratio of 3.04 (95% confidence interval: 1.22 to 7.55; p = 0.017). Among the 18 patients with elevated serum crp, 9 achieved normal serum crp after chemoradiotherapy, of whom 5 remained living with no evidence of recurrence or metastasis during follow-up. By contrast, the remaining 9 patients in whom serum crp did not normalize after chemoradiotherapy died within 4.2 years. CONCLUSIONS Elevated serum crp before treatment predicts poor prognosis in patients with locoregionally advanced nasopharyngeal carcinoma treated with chemoradiotherapy.
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Affiliation(s)
- Y C Zeng
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - R Wu
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - Y P Xiao
- Cancer Insititute, No. 1 Hospital of China Medical University, Shenyang, PR China
| | - F Chi
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - M Xue
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - Z Y Zhang
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - R Xing
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - W Z Zhong
- Lung Cancer Research Institute and Cancer Center, Guangdong Provincial People's Hospital, Guangzhou, PR China
| | - S L Wang
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - X Tian
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - W Chen
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - J J Chen
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - L N Wu
- Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, PR China
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Abstract
One of the most promising applications of chitosanase is the conversion of chitinous biowaste into bioactive chitooligomers (COS). TKU033 chitosanase was induced from squid pen powder (SPP)-containing Bacillus cereus TKU033 medium and purified by ammonium sulfate precipitation and column chromatography. The enzyme was relatively more thermostable in the presence of the substrate and had an activity of 93% at 50 °C in a pH 5 buffer solution for 60 min. Furthermore, the enzyme used for the COS preparation was also studied. The enzyme products revealed various mixtures of COS that with different degrees of polymerization (DP), ranging from three to nine. In the culture medium, the fermented SPP was recovered, and it displayed a better adsorption rate (up to 96%) for the disperse dyes than the water-soluble food colorants, Allura Red AC (R40) and Tartrazne (Y4). Fourier transform-infrared spectroscopic (FT-IR) analysis proved that the adsorption of the dyes onto fermented SPP was a physical adsorption. Results also showed that fermented SPP was a favorable adsorber and could be employed as low-cost alternative for dye removal in wastewater treatment.
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Affiliation(s)
- Tzu-Wen Liang
- Life Science Development Center, Tamkang University, No. 151, Yingchuan Rd., Tamsui, New Taipei City 25137, Taiwan.
| | - Chih-Ting Huang
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
| | - Nguyen Anh Dzung
- Institute of Biotechnology & Environment, Tay Nguyen University, Buon Ma Thuot 63000, Vietnam.
| | - San-Lang Wang
- Life Science Development Center, Tamkang University, No. 151, Yingchuan Rd., Tamsui, New Taipei City 25137, Taiwan.
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137
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Liang TW, Wu CC, Cheng WT, Chen YC, Wang CL, Wang IL, Wang SL. Exopolysaccharides and antimicrobial biosurfactants produced by Paenibacillus macerans TKU029. Appl Biochem Biotechnol 2014; 172:933-50. [PMID: 24122708 PMCID: PMC3918387 DOI: 10.1007/s12010-013-0568-5] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 09/30/2013] [Indexed: 11/24/2022]
Abstract
Paenibacillus macerans TKU029 can produce exopolysaccharides (EPSs; 3.46 g/L) and a biosurfactant (1.78 g/L) in a medium with 2 % (w/v) squid pen powder as the sole carbon/nitrogen source. The biosurfactant can reduce the surface tension of water from 72.30 to 35.34 mN/m at a concentration of 2.76 g/L and reach an emulsification index of 56 % after a 24-h reaction with machine oil. This biosurfactant is stable at 121 °C for 20 min, over a pH range from 3 to 11, and in <5 % salt solutions. It also shows significant antimicrobial activity, which remains active after treatment at 121 °C and at pH values from 4 to 10, against Escherichia coli BCRC13086, Staphylococcus aureus BCRC10780, Fusarium oxysporum BCRC32121 and Aspergillus fumigatus BCRC30099. Furthermore, human skin shows from 37.3 to 44.3 % hydration after being treated with TKU029 EPSs for 180 min. These results imply that EPSs and the biosurfactant from this strain have potential in cosmetics, for removal of oil contamination, and as antimicrobial agents.
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Affiliation(s)
- Tzu-Wen Liang
- Life Science Development Center, Tamkang University, New Taipei City, 25137 Taiwan
- Department of Chemistry, Tamkang University, New Taipei City, 25137 Taiwan
| | - Chia-Chen Wu
- Department of Chemistry, Tamkang University, New Taipei City, 25137 Taiwan
| | - Wei-Ting Cheng
- Department of Chemistry, Tamkang University, New Taipei City, 25137 Taiwan
| | - Yu-Chi Chen
- Department of Cosmetic Science, Vanung University, Chung-Li, 320 Taiwan
| | - Chuan-Lu Wang
- Department of Cosmetic Science and Application, Lan-Yang Institute of Technology, I-Lan, 261 Taiwan
| | - I-Li Wang
- Department of Chemical and Materials Engineering, Tamkang University, New Taipei City, 25137 Taiwan
| | - San-Lang Wang
- Life Science Development Center, Tamkang University, New Taipei City, 25137 Taiwan
- Department of Chemistry, Tamkang University, New Taipei City, 25137 Taiwan
- No. 151, Yingchuan Rd., Tamsui Dist., New Taipei City, 25137 Taiwan
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138
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Liang TW, Lee YC, Wang SL. Tyrosinase inhibitory activity of supernatant and semi-purified extracts from squid pen fermented with Burkholderia cepacia TKU025. Res Chem Intermed 2014. [DOI: 10.1007/s11164-014-1725-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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139
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Wang CL, Chen CJ, Nguyen AD, Liang TW, Twu YK, Huang SY, Wang SL. Environmental chitinous materials as adsorbents for one-step purification of protease and chitosanase. Res Chem Intermed 2014. [DOI: 10.1007/s11164-014-1613-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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140
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Wang CL, Su JW, Liang TW, Nguyen AD, Wang SL. Production, purification and characterisation of a chitosanase from Bacillus cereus. Res Chem Intermed 2014. [DOI: 10.1007/s11164-014-1601-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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141
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Ngan LTK, Wang SL, Hiep ĐM, Luong PM, Vui NT, Đinh TM, Dzung NA. Preparation of chitosan nanoparticles by spray drying, and their antibacterial activity. Res Chem Intermed 2014. [DOI: 10.1007/s11164-014-1594-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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142
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Liang TW, Chen YY, Pan PS, Wang SL. Purification of chitinase/chitosanase from Bacillus cereus and discovery of an enzyme inhibitor. Int J Biol Macromol 2014; 63:8-14. [DOI: 10.1016/j.ijbiomac.2013.10.027] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/08/2013] [Accepted: 10/21/2013] [Indexed: 10/26/2022]
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143
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Liang TW, Hsieh TY, Wang SL. Purification of a thermostable chitinase from Bacillus cereus by chitin affinity and its application in microbial community changes in soil. Bioprocess Biosyst Eng 2013; 37:1201-9. [DOI: 10.1007/s00449-013-1092-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 11/06/2013] [Indexed: 10/25/2022]
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144
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Liang TW, Chen SY, Chen YC, Chen CH, Yen YH, Wang SL. Enhancement of prodigiosin production by Serratia marcescens TKU011 and its insecticidal activity relative to food colorants. J Food Sci 2013; 78:M1743-51. [PMID: 24117432 DOI: 10.1111/1750-3841.12272] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 04/16/2013] [Indexed: 11/30/2022]
Abstract
Prodigiosin (PG) has been reported to have various biological activities. With the aim of increasing Serratia marcescens TKU011 PG production on squid pen powder (SPP)-containing medium, the effects of phosphate and ferrous ion supplementation, autoclave treatment, and aeration were studied. Autoclave treatment showed positive results for PG productivity (2.48 mg/mL), which increased 2.5-fold when the organism was incubated in 50 mL of 40-min autoclaved medium in a baffle-based flask (250 mL) containing 1.5% SPP at 30 °C for 1 day and then at 25 °C for 2 additional days. Furthermore, the use of pigments including PG and the food colorants Allura Red AC (R40) and Tartrazine (Y4) as insecticides was also investigated. The lethal concentrations causing 50% Drosophila larval mortality (LC50) of PG, Y4, and R40 using a 5-d exposure period were 230, 449, and 30000 ppm, respectively. The results indicated that the biopigment PG and the food colorant Y4 were potentially toxic to Drosophila larvae.
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Affiliation(s)
- Tzu-Wen Liang
- Dept. of Chemistry, Tamkang Univ., New Taipei 25137, Taiwan; Life Science Development Center, Tamkang Univ., New Taipei 25137, Taiwan
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Liang TW, Kuo YH, Wu PC, Wang CL, Dzung NA, Wang SL. Purification and Characterization of a Chitosanase and a Protease by Conversion of Shrimp Shell Wastes Fermented bySerratia Marcescens Subsp. SakuensisTKU019. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201000119] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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146
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Wu CS, Liao HT, Jhang JJ, Yeh JT, Huang CY, Wang SL. Thermal properties and characterization of surface-treated RSF-reinforced polylactide composites. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-1018-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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147
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Wang HL, Yu XZ, Wang SL, Chen L, Zhao JH. Note: simultaneous measurements of magnetization and electrical transport signal by a reconstructed superconducting quantum interference device magnetometer. Rev Sci Instrum 2013; 84:086103. [PMID: 24007123 DOI: 10.1063/1.4817623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We have developed a sample rod which makes the conventional superconducting quantum interference device magnetometer capable of performing magnetization and electrical transport measurements simultaneously. The sample holder attached to the end of a 140 cm long sample rod is a nonmagnetic drinking straw or a 1.5 mm wide silicon strip with small magnetic background signal. Ferromagnetic semiconductor (Ga,Mn)As films are used to test the new sample rod, and the results are in good agreement with previous report.
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Affiliation(s)
- H L Wang
- State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China
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148
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An YH, Xing Y, Song J, Li PG, Wang SL, Liu AP, Zhu ZY, Tang WH. Optoelectronic properties of CdSe0.75S0.25 nanocrystals assembled into micro-electrodes. J Nanosci Nanotechnol 2013; 13:5640-5644. [PMID: 23882809 DOI: 10.1166/jnn.2013.7518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
CdSe0.75S0.25 semiconductor nanocrystals were synthesized by chemical colloidal route. The crystal structure, morphology and optical properties of synthesized CdSe0.75S0.25 nanocrystals were characterized by XRD, TEM and UV-Vis absorption spectroscopy respectively. The crystal structure of CdSe0.75S0.25 is face-centered Cubic sphalerite phase. The average size is about 7 nm in diameter. A gold tip-to-tip structure electrode with the gap size -20 microm was fabricated using conventional optical lithography technique followed by film deposition and standard lift-off process. An optoelectronics device was fabricated based on CdSe0.75S0.25 by assembling nanocrystals into electrodes by using dielectrophoresis (DEP) process. The electrical transport properties and opto-electrical transport properties of the fabricated device were measured at temperature range from 5 K to 305 K. The results show that the resistance of CdSe0.75S0.25 NCs increases with the temperature decreases, indicating a typical semiconductor behavior. An obvious photoconductive behavior was observed, demonstrated potential application in nano-optoelectronics devices. After data analyzing, the conductivity shows the 0.5 exponent of Efros-Shklovskii variable-range-hopping (ES-VRH) model.
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Affiliation(s)
- Y H An
- Department of Physics, Center for Optoelectronics Materials and Devices, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
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149
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Cao Y, Xia DS, Qi SR, Du J, Ma P, Wang SL, Fan ZP. Epiregulin can promote proliferation of stem cells from the dental apical papilla via MEK/Erk and JNK signalling pathways. Cell Prolif 2013; 46:447-56. [PMID: 23829318 DOI: 10.1111/cpr.12039] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Accepted: 03/24/2013] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES Mesenchymal stem cells (MSCs) are a reliable resource for tissue regeneration, but their molecular mechanisms of differentiation and proliferation remain unclear; this situation has restricted use of MSCs to a limited number of applications. A previous study of ours found a member of the epidermal growth factor family, epiregulin (EREG), to be involved in regulation of MSC differentiation. In the present study, we have used human dental stem cells from the apical papilla (SCAPs) to investigate the role of EREG on proliferation of MSCs. MATERIALS AND METHODS SCAPs were isolated from apical papillae of immature third molars. Retroviral short hairpin RNA (shRNA) was used to silence EREG gene expression, and human recombinant EREG protein was used to stimulate SCAPs. SCAP proliferation was examined using tetrazolium dye colorimetric assay/cell growth curve. Western blotting was performed to detect expressions of extracellular signal-regulated protein kinases 1 and 2 (Erk1/2), mitogen-activated protein kinases 1 and 2 (MEK1/2), protein kinase B (Akt), p38 mitogen-activated protein kinase (p38 MAPK) and c-Jun N-terminal kinase (JNK). RESULTS Depletion of EREG with shRNA inhibited SCAP proliferation and repressed phosphorylation of Erk1/2 and JNK. Human recombinant EREG protein promoted cell proliferation and enhanced Erk1/2, MEK and JNK phosphorylation in SCAPs. Furthermore, blocking MEK/Erk signalling with specific Erk1/2 inhibitor PD98059, or JNK signalling with specific inhibitor SP600125, abolished effects of EREG on cell proliferation. CONCLUSION These findings indicate that EREG could enhance cell proliferation in dental tissue-derived MSCs by activating MEK/Erk and JNK signalling pathways.
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Affiliation(s)
- Y Cao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, China
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150
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Liang TW, Liu CP, Wu C, Wang SL. Applied development of crude enzyme from Bacillus cereus in prebiotics and microbial community changes in soil. Carbohydr Polym 2013; 92:2141-8. [DOI: 10.1016/j.carbpol.2012.11.097] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 11/28/2012] [Accepted: 11/30/2012] [Indexed: 11/25/2022]
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