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Lin ZY, Zeng HP, Chen JC, Xiong WW, Luo LJ, Zheng YS, Li J, Huang HP, Wang W. [Feasibility of a single-port thoracoscopy-assisted five-step laparoscopic procedure via transabdominal diaphragmatic approach for No.111 lymphadenectomy in patients with Siewert type II esophageal gastric junction adenocarcinoma]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:339-345. [PMID: 37072311 DOI: 10.3760/cma.j.cn441530-20221109-00459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
Objective: We aimed to explore the feasibility of a single-port thoracoscopy- assisted five-step laparoscopic procedure via transabdominal diaphragmatic(TD) approach(abbreviated as five-step maneuver) for No.111 lymphadenectomy in patients with Siewert type II esophageal gastric junction adenocarcinoma (AEG). Methods: This was a descriptive case series study. The inclusion criteria were as follows: (1) age 18-80 years; (2) diagnosis of Siewert type II AEG; (3) clinical tumor stage cT2-4aNanyM0; (4) meeting indications of the transthoracic single-port assisted laparoscopic five-step procedure incorporating lower mediastinal lymph node dissection via a TD approach; (5) Eastern Cooperative Oncology Group performance status (ECOG PS) 0-1; and (6) American Society of Anesthesiologists classification I, II, or III. The exclusion criteria included previous esophageal or gastric surgery, other cancers within the previous 5 years, pregnancy or lactation, and serious medical conditions. We retrospectively collected and analyzed the clinical data of 17 patients (age [mean ± SD], [63.6±11.9] years; and 12 men) who met the inclusion criteria in the Guangdong Provincial Hospital of Chinese Medicine from January 2022 to September 2022. No.111 lymphadenectomy was performed using five-step maneuver as follows: superior to the diaphragm, starting caudad to the pericardium, along the direction of the cardio-phrenic angle and ending at the upper part of the cardio-phrenic angle, right to the right pleura and left to the fibrous pericardium , completely exposing the cardio-phrenic angle. The primary outcome includes the numbers of harvested and of positive No.111 lymph nodes. Results: Seventeen patients (3 proximal gastrectomy and 14 total gastrectomy) had undergone the five-step maneuver including lower mediastinal lymphadenectomy without conversion to laparotomy or thoracotomy and all had achieved R0 resection with no perioperative deaths. The total operative time was (268.2±32.9) minutes, and the lower mediastinal lymph node dissection time was (34.0±6.0) minutes. The median estimated blood loss was 50 (20-350) ml. A median of 7 (2-17) mediastinal lymph nodes and 2(0-6) No. 111 lymph nodes were harvested. No. 111 lymph node metastasis was identified in 1 patient. The time to first flatus occurred 3 (2-4) days postoperatively and thoracic drainage was used for 7 (4-15) days. The median postoperative hospital stay was 9 (6-16) days. One patient had a chylous fistula that resolved with conservative treatment. No serious complications occurred in any patient. Conclusion: The single-port thoracoscopy-assisted five-step laparoscopic procedure via a TD approach can facilitate No. 111 lymphadenectomy with few complications.
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Affiliation(s)
- Z Y Lin
- School of Chinese Medicine Surgery, The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - H P Zeng
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - J C Chen
- Department of Thoracic Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - W W Xiong
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - L J Luo
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - Y S Zheng
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - J Li
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - H P Huang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
| | - W Wang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, China
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Luo SJ, Xiong WW, Chen Y, Li ZY, Li E, Zeng HP, Zheng YS, Luo LJ, Li J, Cui ZM, Wan J, Wang W. [Five-step maneuver of transthoracic single-port assisted laparoscopic lower mediastinal lymph node dissection for Siewert type Ⅱ adenocarcinoma of the esophagogastric junction]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:684-690. [PMID: 34412185 DOI: 10.3760/cma.j.cn.441530-20210518-00210] [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: Surgical operation is the main treatment for advanced adenocarcinoma of esophagogastric junction (AEG). Due to its special anatomic location and unique lymph node reflux mode, the surgical treatment of Siewert II AEG is controversial. Lower mediastinal lymph node dissection is one of the most controversial points and a standard technique has not yet been established. This study is aim to explore the safety and feasibility of five-step maneuver of transthoracic single-port assisted laparoscopic lower mediastinal lymph node dissection for Siewert type II AEG. Methods: A descriptive case series study was conducted. The intraoperative and postoperative data of 25 patients with Siewert type II AEG who underwent five-step maneuver of transthoracic single-port assisted laparoscopic lower mediastinal lymph node dissection in Guangdong Provincial Hospital of Traditional Chinese Medicine from January 2019 to April 2021 were retrospectively analyzed. Five-step maneuver was as follows: In the first step, the subcardiac sac was exposed; the right pulmonary ligament lymph nodes and the anterior thoracic paraaortic lymph nodes were dissected cranial to inferior pericardium, left to left edge of thoracic aorta. In the second step, the left diaphragm was opened, and a 12 mm trocar was placed through the 6-7 rib in the left anterior axillary line. The supra-diaphragmatic nodes were dissected through the thoracic operation hole. In the third step, the left inferior pulmonary ligament was severed. The anterior fascia of thoracic aorta was incised to join the anterior space of thoracic aorta formed in the first step and then the lymphatic tissue was dissected upward until the exposure of left inferior pulmonary vein. In the fourth step, the posterior pericardium was denuded retrogradely from ventral side to oral side to the level of left inferior pulmonary vein, right to right pleura, and then the right pulmonary ligament lymph nodes were completely removed. In the fifth step, the esophagus was denuded, and the esophagus was transected 5 cm above the tumor using a linear stapler to complete the dissection of lower thoracic paraesophageal lymph nodes. Results: Operations were successfully completed in 25 patients without conversion, intra-operative complication and perioperative death. Total gastrectomy was performed in 19 cases and proximal gastrectomy in 6 cases. The mean operative time was (268.7±85.6) minutes, the mean estimated blood loss was (90.4±44.2) ml, the mean time of lower mediastinal lymph node dissection was (38.6±10.3) minutes, and the mean harvested number of lower mediastinal lymph node was 5.9±2.9. The length of esophageal invasion was >2 cm in 7 cases and ≤ 2 cm in 18 cases. Eight patients (33.0%) had lower mediastinal lymph node metastasis, including 3 cases with esophageal invasion >2 cm and 5 cases with esophageal invasion ≤ 2 cm. The mean time to postoperative first flatus was (5.5±3.1) days. The average time of postoperative thoracic drainage was (5.9±2.9) days. The mean hospital stay was (9.7±3.1) days. Two patients (8.0%) developed postoperative grade IIIa complications according to the Clavien-Dindo classification, including 1 case of pancreatic fistula and 1 case of pleural effusion, both of whom were cured by puncture drainage. Conclusions: Five-step maneuver of transthoracic single-port assisted laparoscopic lower mediastinal lymph nodes dissection for Siewert type II AEG is safe and feasible. Which can ensure sufficient lower mediastinal lymph node dissection to the level of left inferior pulmonary vein.
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Affiliation(s)
- S J Luo
- The Second Clinical College, Guangzhou University of Traditional Chinese Medicine, Guangzhou 510405, China
| | - W W Xiong
- Department of Gastrointestinal Surgery, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - Y Chen
- The Second Clinical College, Guangzhou University of Traditional Chinese Medicine, Guangzhou 510405, China
| | - Z Y Li
- Department of Surgery, Taishan People's Hospital, Guangdong Taishan 529200, China
| | - E Li
- Department of Surgery, Meizhou People's Hospital, Guangdong Meizhou 514031, China
| | - H P Zeng
- The Second Clinical College, Guangzhou University of Traditional Chinese Medicine, Guangzhou 510405, China
| | - Y S Zheng
- Department of Gastrointestinal Surgery, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - L J Luo
- Department of Gastrointestinal Surgery, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - J Li
- Department of Gastrointestinal Surgery, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - Z M Cui
- Department of Gastrointestinal Surgery, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - J Wan
- Department of Gastrointestinal Surgery, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - W Wang
- Department of Gastrointestinal Surgery, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
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Wang YF, Feng FL, Zhao XH, Ye ZX, Zeng HP, Li Z, Jiang XQ, Peng ZH. Combined detection tumor markers for diagnosis and prognosis of gallbladder cancer. World J Gastroenterol 2014; 20:4085-4092. [PMID: 24744600 PMCID: PMC3983467 DOI: 10.3748/wjg.v20.i14.4085] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 01/23/2014] [Accepted: 03/06/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To clarify the value of combined use of markers for the diagnosis of gallbladder cancer and prediction of its prognosis.
METHODS: Serum cancer antigens (CA)199, CA242, carcinoembryonic antigen (CEA), and CA125 levels were measured in 78 patients with gallbladder cancer (GBC), 78 patients with benign gallbladder diseases, and 78 healthy controls using electrochemiluminescence. CA199, CA242, CEA, and CA125 levels and positive rates were analyzed and evaluated pre- and post-operatively. Receiver operator characteristic curves were used to determine diagnostic sensitivity and specificity of GBC. Survival time analysis, including survival curves, and multivariate survival analysis of a Cox proportional hazards model was performed to evaluate independent prognostic factors.
RESULTS: Serum CA242, CA125, and CA199 levels in the GBC group were significantly higher when compared with those in the benign gallbladder disease and healthy control groups (P < 0.01). With a single tumor marker for GBC diagnosis, the sensitivity of CA199 was the highest (71.7%), with the highest specificity being in CA242 (98.7%). Diagnostic accuracy was highest with a combination of CA199, CA242, and CA125 (69.2%). CA242 could be regarded as a tumor marker of GBC infiltration in the early stage. The sensitivity of CA199 and CA242 increased with progression of GBC and advanced lymph node metastasis (P < 0.05). The 78 GBC patients were followed up for 6-12 mo (mean: 8 mo), during which time serum CA199, CA125, and CA242 levels in the recurrence group were significantly higher than in patients without recurrence (P < 0.01). The post-operative serum CA199, CA125, and CA242 levels in the non-recurrence group were significantly lower than those in the GBC group (P < 0.01). Multivariate survival analysis using a Cox proportional hazards model showed that cancer of the gallbladder neck and CA199 expression level were independent prognostic factors.
CONCLUSION: CA242 is a marker of GBC infiltration in the early stage. CA199 and cancer of the gallbladder neck are therapeutic and prognostic markers.
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Li X, Wei G, Wang X, Liu DH, Deng RD, Li H, Zhou JH, Li YW, Zeng HP, Chen DF. Targeting of the Sonic Hedgehog pathway by atractylenolides promotes chondrogenic differentiation of mesenchymal stem cells. Biol Pharm Bull 2012; 35:1328-35. [PMID: 22863933 DOI: 10.1248/bpb.b12-00265] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Molecules that enhance chondrogenic differentiation in mesenchymal stem cells (MSCs) were identified and isolated using an in vitro Gli reporter gene assay in MSCs incorporating a Sonic Hedgehog (Shh) target. Atractylenolide III, which promoted Gli1-mediated transcriptional activity, was isolated from an ethyl acetate extract of the Rhizoma, Atractylodis macrocephalae. After dehydration, atractylenolide III was transformed to atractylenolide I. Both atractylenolides were confirmed by MS, UV, IR, 1H- and 13C-NMR spectra. Atractylenolide III (which contains -OH at the 8-position) and atractylenolide I (which lacks -OH at the 8-position) were found to effectively promote the activity of the Gli promoter. While the hydroxyl group of atractylenolide III was not essential for the effect of atractylenolide, its effect was dependent on Shh signaling. Phenotypic cellular analysis indicated that atractylenolides induced MSCs to differentiate into chondrocytes, as shown by increased expression of specific chondrogenic markers including collagen II, aggrecan and the cartilage related transcription factor, Sox9. Atractylenolides significantly increased the expression of Shh and its target gene Gli-1, indicating that Shh signaling was activated by atractylenolides. Moreover, inhibition of Shh signaling reduced the effect of atractylenolides on the chondrogenic phenotype. The discovery that atractylenolides induce chondrocytes from MSCs is promising for bony disease therapy.
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Affiliation(s)
- Xican Li
- School of Chinese Herbal Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
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Wang TT, Chen W, Zeng HP, Chen DF. Chemical Components in Extracts from Plastrum Testudinis with Proliferation-Promoting Effects on Rat Mesenchymal Stem Cells. Chem Biol Drug Des 2012; 79:1049-55. [DOI: 10.1111/j.1747-0285.2012.01361.x] [Citation(s) in RCA: 14] [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] [Indexed: 10/28/2022]
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Zhang XC, Huo ZM, Wang TT, Zeng HP. Facile synthesis and photochromic properties of diarylethene-containing terpyridine and its transition metal (Zn2+
/Co2+
/Ru2+
) complexes. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.2914] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiao-Chun Zhang
- Institute of Functional Molecule, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510641 China
| | - Zhi-Ming Huo
- Institute of Functional Molecule, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510641 China
| | - Ting-Ting Wang
- Institute of Functional Molecule, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510641 China
| | - He-Ping Zeng
- Institute of Functional Molecule, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510641 China
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Li Y, Luo J, Lau WM, Zheng G, Fu S, Wang TT, Zeng HP, So KF, Chung SK, Tong Y, Liu K, Shen J. Caveolin-1 plays a crucial role in inhibiting neuronal differentiation of neural stem/progenitor cells via VEGF signaling-dependent pathway. PLoS One 2011; 6:e22901. [PMID: 21826216 PMCID: PMC3149620 DOI: 10.1371/journal.pone.0022901] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [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: 02/01/2011] [Accepted: 07/08/2011] [Indexed: 01/17/2023] Open
Abstract
In the present study, we aim to elucidate the roles of caveolin-1(Cav-1), a 22 kDa protein in plasma membrane invaginations, in modulating neuronal differentiation of neural progenitor cells (NPCs). In the hippocampal dentate gyrus, we found that Cav-1 knockout mice revealed remarkably higher levels of vascular endothelial growth factor (VEGF) and the more abundant formation of newborn neurons than wild type mice. We then studied the potential mechanisms of Cav-1 in modulating VEGF signaling and neuronal differentiation in isolated cultured NPCs under normoxic and hypoxic conditions. Hypoxic embryonic rat NPCs were exposed to 1% O2 for 24 h and then switched to 21% O2 for 1, 3, 7 and 14 days whereas normoxic NPCs were continuously cultured with 21% O2. Compared with normoxic NPCs, hypoxic NPCs had down-regulated expression of Cav-1 and up-regulated VEGF expression and p44/42MAPK phosphorylation, and enhanced neuronal differentiation. We further studied the roles of Cav-1 in inhibiting neuronal differentiation by using Cav-1 scaffolding domain peptide and Cav-1-specific small interfering RNA. In both normoxic and hypoxic NPCs, Cav-1 peptide markedly down-regulated the expressions of VEGF and flk1, decreased the phosphorylations of p44/42MAPK, Akt and Stat3, and inhibited neuronal differentiation, whereas the knockdown of Cav-1 promoted the expression of VEGF, phosphorylations of p44/42MAPK, Akt and Stat3, and stimulated neuronal differentiation. Moreover, the enhanced phosphorylations of p44/42MAPK, Akt and Stat3, and neuronal differentiation were abolished by co-treatment of VEGF inhibitor V1. These results provide strong evidence to prove that Cav-1 can inhibit neuronal differentiation via down-regulations of VEGF, p44/42MAPK, Akt and Stat3 signaling pathways, and that VEGF signaling is a crucial target of Cav-1. The hypoxia-induced down-regulation of Cav-1 contributes to enhanced neuronal differentiation in NPCs.
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Affiliation(s)
- Yue Li
- School of Chinese Medicine, The University of Hong Kong, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong SAR, China
| | - Jianmin Luo
- School of Chinese Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Wui-Man Lau
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, Department of Anatomy, The University of Hong Kong, Hong Kong SAR, China
| | - Guoqing Zheng
- School of Chinese Medicine, The University of Hong Kong, Hong Kong SAR, China
- Center of Neurology and Rehabilitation, The Second Affiliated Hospital of Wenzhou Medical College, Wenzhou, China
| | - Shuping Fu
- School of Chinese Medicine, The University of Hong Kong, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong SAR, China
| | - Ting-Ting Wang
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong SAR, China
- Institute of Functional Molecule, School of Chemistry, South China University of Technology, Guangzhou, China
| | - He-Ping Zeng
- Institute of Functional Molecule, School of Chemistry, South China University of Technology, Guangzhou, China
| | - Kwok-Fai So
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, Department of Anatomy, The University of Hong Kong, Hong Kong SAR, China
| | - Sookja Kim Chung
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, Department of Anatomy, The University of Hong Kong, Hong Kong SAR, China
| | - Yao Tong
- School of Chinese Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Kejian Liu
- Center of Biomedical Research Excellence, College of Pharmacy, University of New Mexico, Albuquerque, New Mexico, United States of America
| | - Jiangang Shen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong SAR, China
- Research Centre of Heart, Brain, Hormone and Healthy Aging, The University of Hong Kong, Hong Kong SAR, China
- * E-mail:
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Boueri M, Motto-Ros V, Lei WQ, Ma QL, Zheng LJ, Zeng HP, Yu J. Identification of polymer materials using laser-induced breakdown spectroscopy combined with artificial neural networks. Appl Spectrosc 2011; 65:307-314. [PMID: 21352651 DOI: 10.1366/10-06079] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A combination of laser-induced breakdown spectroscopy (LIBS) and artificial neural networks (ANNs) has been used for the identification of polymer materials, including polypropylene (PP), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), polyoxymethylene (POM), polyethylene (PE), polyamide or nylon (PA), polycarbonate (PC) and poly(methyl methacrylate) (PMMA). After optimization of the experimental setup and the spectrum acquisition protocol, successful identification rates between 81 and 100% were achieved using spectral features gathered from single spectra without averaging (1 second acquisition time) over a wide spectral range (240-820 nm). Furthermore, ten different materials based on PVC were tested using the identification procedure. Correct identifications were obtained as well. Sorting of the materials into sub-categories of PVC materials according to their charges (concentration in trace elements such as Ca) was performed. The demonstrated capacities fit, in practice, the needs of plastic-waste sorting and of producing high-grade recycled plastic materials.
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Liao WX, Peng YW, Yu L, Ning XQ, Zeng HP. (E)-Ethyl 2-cyano-3-[4-(4,5-diphenyl-1H-imidazol-2-yl)phen-yl]acrylate dihydrate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o707. [PMID: 21522450 PMCID: PMC3052040 DOI: 10.1107/s1600536811006039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2010] [Accepted: 02/17/2011] [Indexed: 05/26/2023]
Abstract
In the title compound, C27H21N3O2·2H2O, the three benzene rings attached to the heterocyclic imidazole ring are not coplanar with the latter, making dihedral angles of 14.8 (2), 31.4 (2), and 37.5 (2)°, respectively, for the benzene ring planes in the 2-, 4- and 5-positions. In the crystal, there are two water molecules which serve as connectors between the acrylate molecules and stabilize the structure via N—H⋯O, O—H⋯N, C—H⋯O and O—H⋯O hydrogen bonding.
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Affiliation(s)
- Wei-Xing Liao
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, People's Republic of China
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Chen DF, Cao JH, Liu Y, Wu Y, Du SH, Li H, Zhou JH, Li YW, Zeng HP, Hua ZC. BMP-Id pathway targeted by cholesterol myristate suppresses the apoptosis of PC12 cells. Brain Res 2011; 1367:33-42. [DOI: 10.1016/j.brainres.2010.10.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Revised: 10/06/2010] [Accepted: 10/07/2010] [Indexed: 10/18/2022]
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Chen DF, Zhang HL, Du SH, Li H, Zhou JH, Li YW, Zeng HP, Hua ZC. Cholesterol myristate suppresses the apoptosis of mesenchymal stem cells via upregulation of inhibitor of differentiation. Steroids 2010; 75:1119-26. [PMID: 20674581 DOI: 10.1016/j.steroids.2010.07.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 07/09/2010] [Accepted: 07/14/2010] [Indexed: 01/21/2023]
Abstract
To identify small molecules that suppress the apoptosis of mesenchymal stem cells (MSCs) is promising for stem cell therapy. We recently showed that bone morphogenetic protein 4 (BMP4) signalling involves the effect of cholesterol myristate on the proliferation of MSCs. The present study evaluated the effects of cholesterol myristate on the apoptosis of MSCs and the inhibitor of differentiation (Id1), target gene of BMP4 signalling. MSCs transfected by the Id1 promoter reporter construct, cholesterol myristate increases the activity of Id1 promoter. However, structurally related steroids such as cholesterol, β-sitosterol and cholesten-3-one, lack of the myristate, did not affect the activity of Id1 promoter, suggesting that myristate is essential for this effect. This effect depends on BMP signalling. Apoptosis analysis indicated that cholesterol myristate inhibited the apoptosis of MSCs induced by serum-free. Cholesterol myristate increases the expression of Id1 and its target gene bcl-x/l in MSCs treated with serum-free. Moreover, noggin, a BMP antagonist, reduced the anti-apoptotic effects of cholesterol myristate. Thus, this study aims to provide evidence that cholesterol myristate suppresses the apoptosis of MSCs via up-regulation of Id1. These findings can be applied for improving MSCs survival in stem-cell transplantation, bone-marrow transplantation, treatment of bone diseases such as osteoporosis and chemotherapy.
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Affiliation(s)
- Dong-Feng Chen
- The State Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing, China.
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Zeng HP. Photophysical Properties and Photoinduced Electron Transfer between [60]Fullerene-Containing Cyclic Sulphoxide [ C60-C6H8SO] and Tetrathiafulvalene (TTF) by Laser Flash Photolysis. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20020201016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zeng HP. Transient Absorption Spectral Characterization of Electron Transfer between Fullerenes (C60/C70) and N, N, N′, N′-Tetra (p-methylphenyl) −4, 4′-diamino-1, 1′-diphenyl Sulphide (TPDAS). CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20020201019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Chen DF, Meng LJ, Du SH, Zhang HL, Li H, Zhou JH, Li YW, Zeng HP, Hua ZC. (+)-Cholesten-3-one induces differentiation of neural stem cells into dopaminergic neurons through BMP signaling. Neurosci Res 2010; 68:176-84. [PMID: 20708045 DOI: 10.1016/j.neures.2010.07.2043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Revised: 06/16/2010] [Accepted: 07/30/2010] [Indexed: 10/19/2022]
Abstract
To identify small molecules that induce dopaminergic neurons from neural stem cells (NSCs) is promising for therapy of Parkinson's disease. Here we report the results of analyzing structurally related steroids in traditional Chinese medicine to identify agents that enhance dopaminergic differentiation of NSCs. Using P19 cells transfected by tyrosine hydroxylase (TH) promoter reporter construct, (+)-Cholesten-3-one with carbonyl, but not cholesterol and cholesterol myristate can effectively promote the activity of TH promoter. This effect depends on bone morphogenetic protein (BMP) signaling. Phenotypic cellular analysis indicated that (+)-Cholesten-3-one induces differentiation of NSCs to dopaminergic neurons with increased expression of specific dopaminergic markers including TH, dopamine transporter, dopa decarboxylase and higher level of dopamine secretion. (+)-Cholesten-3-one significantly increases the expression of BMPR IB, but not BMPR IA or BMPR II; p-Smad1/5/8 positive nuclei and expression of p-Smad1/5/8 were detected in NSCs treated with (+)-Cholesten-3-one, indicating that (+)-Cholesten-3-one may activate the BMP signaling. Moreover, overexpression of BMP4 or inhibition of BMP affects the effect of (+)-Cholesten-3-one on the dopaminergic phenotype. These findings may contribute to efficient production of dopaminergic neurons from NSCs culture for many applications and raise interesting questions about the role of (+)-Cholesten-3-one in neurogenesis.
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Affiliation(s)
- Dong-Feng Chen
- The State Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing, China.
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Chen DF, Li X, Xu Z, Liu X, Du SH, Li H, Zhou JH, Zeng HP, Hua ZC. Hexadecanoic Acid from Buzhong Yiqi Decoction Induced Proliferation of Bone Marrow Mesenchymal Stem Cells. J Med Food 2010; 13:967-70. [DOI: 10.1089/jmf.2009.1293] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Dong-Feng Chen
- The State Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing, China
- College of Fundamental Medical Science, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
| | - Xican Li
- College of Fundamental Medical Science, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
| | - Zhiwei Xu
- College of Fundamental Medical Science, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
| | - Xiaobing Liu
- College of Fundamental Medical Science, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
| | - Shao-Hui Du
- College of Fundamental Medical Science, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
| | - Hui Li
- College of Fundamental Medical Science, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
| | - Jian-Hong Zhou
- College of Fundamental Medical Science, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
| | - He-Ping Zeng
- Faculty of Chemistry, South China University of Technology, Guangzhou, China
| | - Zi-Chun Hua
- The State Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing, China
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Zhu ZB, Zeng HP. A 3-D Gd(III)–Cu(I) coordination polymer based on nicotinate and oxalate ligands: synthesis, crystal structure, and magnetic properties. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.497206] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Zhi-Bo Zhu
- a Institute of Functional Molecule, South China University of Technology , Guangzhou, P.R. China
- b School of Pharmaceutical Sciences, Southern Medical University , Guangzhou, P.R. China
| | - He-Ping Zeng
- a Institute of Functional Molecule, South China University of Technology , Guangzhou, P.R. China
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Wang TT, Zeng GC, Li XC, Zeng HP. In VitroStudies on the Antioxidant and Protective Effect of 2-Substituted -8-Hydroxyquinoline Derivatives Against H2O2-Induced Oxidative Stress in BMSCs. Chem Biol Drug Des 2010; 75:214-22. [DOI: 10.1111/j.1747-0285.2009.00925.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [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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Chen DF, Du SH, Zhang HL, Li H, Zhou JH, Li YW, Yi XH, Hou QK, Wu J, Zeng HP, Hua ZC. Autocrine BMP4 signaling involves effect of cholesterol myristate on proliferation of mesenchymal stem cells. Steroids 2009; 74:1066-72. [PMID: 19723531 DOI: 10.1016/j.steroids.2009.08.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2009] [Revised: 08/14/2009] [Accepted: 08/24/2009] [Indexed: 10/20/2022]
Abstract
We recently identified that cholesterol myristate in traditional Chinese medicine (TCM) is the active compound that increases proliferation of mesenchymal stem cell (MSCs). The present study is further to determine what signal pathway involves in effect of cholesterol myristate. Reverse transcription-PCR, Western blot and ELISA analysis show that cholesterol myristate increases the release of bone morphogenetic protein 4 (BMP4) from MSCs and the expression in the intracellular levels of BMP4 in a time- and dose dependent manner. However, structurally related steroids such as cholesterol and cholesten presented in TCM, both lack of the myristate, did not affect the secretion and expression of BMP4 on MSCs. These finds suggest that myristate is essential for the effects of cholesterol myristate. Furthermore, cholesterol myristate significantly increase BMPRIB levels of MSCs and the number of BMPRIB positive cells in a time- and dose dependent manner, but not BMPR IA or BMPR II. Our results indicate that action of cholesterol myristate may activate the BMP4-BMPRIB autocrine. Moreover, a blocking antibody against BMP4 or the BMP4 antagonist, noggin, partially reduced the effects of cholesterol myristate on MSCs proliferation. Thus, this study is to provide evidence that autocrine BMP4 signaling involves effect of cholesterol myristate on MSCs proliferation.
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Affiliation(s)
- Dong-Feng Chen
- Department of Anatomy, Guangzhou University of Traditional Chinese Medicine, No. 12 Jichang Road, Guangzhou, China.
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Wang TT, Zeng GC, Zeng HP, Liu PY, Wang RX, Zhang ZJ, Xiong YL. Synthesis of light-emmting materials bis-[2′-2″-(9H-fluoren-2-yl)-vinyl-8-hydroxyquinoline] zinc(II) and bis-[2′-4″-(4,5-diphenyl-1H-imidazol-2-yl)styryl-8-hydroxyquinoline] zinc(II). Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.06.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zeng HP, Wang TT, Chen W, Wang CY, Chen DF, Shen JG. Characterization of chemical components in extracts from Si-wu decoction with proliferation-promoting effects on rat mesenchymal stem cells. Bioorg Med Chem 2008; 16:5109-14. [DOI: 10.1016/j.bmc.2008.03.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2007] [Revised: 03/05/2008] [Accepted: 03/07/2008] [Indexed: 10/22/2022]
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Zhang YH, Zeng HP, Chen DF. [Effect of fatty acids from plastrum testudinis on proliferation of rat bone mesenchymal stem cell]. Sheng Wu Gong Cheng Xue Bao 2007; 23:1029-1032. [PMID: 18257231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
To investigate the components in Plastrum Testudinis which have effects on the proliferation of rat bone marrow mesenchymal stem cells( bMMSCs), the active parts of plastrum testudinis which can promote proliferation of rat mesenchymal stem cells were extracted by petroleum aether. The activities of inducing the proliferation of bMMSCs were studied by MTT assay and flow cytometry. The chemical components of extraction were analyzed by GC-MS. The results showed that the petroleum aether extraction can obviously promote the proliferation of the stem cells. The main components are long-chain fatty acids, cholesterols and cholest-4-en-3-one, and palmitic acid, stearic acid and cholest-4-en-3-one have effects on proliferation of bMMSCs. In plastrum testudinis, fatty acids can promote the proliferation of bMMSCs but not increase overly. This provide the experiment basis, and offer important reference for Traditional Chinese Medicine that researches stem cells.
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Affiliation(s)
- Yue-Hua Zhang
- Guangzhou City Polytechnic College, Guangzhou 510405, China
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Zeng HP, Wang TT, Xu DF, Cai YP, Chen DF. Synthesis, crystal structure and biological activity of 2-[2-(quinolin-2-yl)vinyl]-8-hydroxyquinoline and 2-[2-(quinolin-4-yl)vinyl]-8-hydroxyquinoline. J Appl Crystallogr 2007. [DOI: 10.1107/s0021889807007704] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Two new isomeric 8-hydroxyquinoline derivatives with quinoline groups have been synthesized by Perkin condensation. Their structures were characterized by EI-MS,1H NMR spectroscopy, elemental analysis and FT–IR spectroscopy; crystal structures were determined by X-ray crystallography. 2-[2-(Quinolin-2-yl)vinyl]-8-hydroxyquinoline crystallizes in the tetragonal space groupI41/aand 2-[2-(quinolin-4-yl)vinyl]-8-hydroxyquinoline crystallizes in the monoclinic space groupP21/n. Hydrogen bonds and intermolecular interactions are observed in the compounds and stabilize their structures. The biological activities were investigated by MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay and flow cytometry analysis, and the results revealed that the two compounds had effects on the proliferation of rat mesenchymal stem cells.
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Peng CZ, Zhang J, Yang D, Gao WB, Ma HX, Yin H, Zeng HP, Yang T, Wang XB, Pan JW. Experimental long-distance decoy-state quantum key distribution based on polarization encoding. Phys Rev Lett 2007; 98:010505. [PMID: 17358464 DOI: 10.1103/physrevlett.98.010505] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2006] [Indexed: 05/14/2023]
Abstract
We demonstrate the decoy-state quantum key distribution (QKD) with one-way quantum communication in polarization space over 102 km. Further, we simplify the experimental setup and use only one detector to implement the one-way decoy-state QKD over 75 km, with the advantage to overcome the security loopholes due to the efficiency mismatch of detectors. Our experimental implementation can really offer the unconditionally secure final keys. We use 3 different intensities of 0, 0.2, and 0.6 for the light sources in our experiment. In order to eliminate the influences of polarization mode dispersion in the long-distance single-mode optical fiber, an automatic polarization compensation system is utilized to implement the active compensation.
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Affiliation(s)
- Cheng-Zhi Peng
- Department of Physics, Tsinghua University, Beijing, China
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Zeng HP, Wang TT, Ouyang XH, Zhou YD, Jing HL, Yuan GZ, Chen DF, Du SH, Li H, Zhou JH. 8-Hydroxyquinoline derivatives induce the proliferation of rat mesenchymal stem cells (rMSCs). Bioorg Med Chem 2006; 14:5446-50. [PMID: 16730996 DOI: 10.1016/j.bmc.2006.05.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2006] [Revised: 04/29/2006] [Accepted: 05/02/2006] [Indexed: 11/17/2022]
Abstract
A series of 8-hydroxyquinoline derivatives with different substituted groups at 2- or 5-position have been synthesized and characterized. Their effects on the proliferation of the rat marrow-derived mesenchymal stem cells (rMSCs) have been evaluated by MTT assay and flow cytometry. We also analyzed the ability of these compounds to regulate the proliferation of rMSCs and the relationship with the structures of 8-hydroxyquinoline. Compounds 8-11, in which, the vinyl-substituents are on the 2-position of 8-hydroxyquinoline, appear to be able to induce the proliferation of rMSCs. These results show that compounds 8-11 provide a kind of new substances for regulating the proliferation of rMSCs.
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Affiliation(s)
- He-Ping Zeng
- Institute of Functional Molecule, School of Chemistry, South China University of Technology, Guangzhou, China.
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Jing HL, Zeng HP, Zhou YD, Wang TT, Yuan GZ, Ouyang XH. Synthesis and Characterization of 8-Hydroxyquinoline Derivative Containing a Triphenylamine Unit and Its Metal Complexes. CHINESE J CHEM 2006. [DOI: 10.1002/cjoc.200690183] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wang TT, Zeng HP. Synthesis, Characterization and Theoretical Calculation of the Fulleropyrrolidines Containing Triphenylamine. CHINESE J CHEM 2006. [DOI: 10.1002/cjoc.200690043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zeng HP, Wang T, Sandanayaka ASD, Araki Y, Ito O. Photoinduced Charge Separation and Charge Recombination in [60]Fullerene−Ethylcarbazole and [60]Fullerene−Triphenylamines in Polar Solvents. J Phys Chem A 2005; 109:4713-20. [PMID: 16833812 DOI: 10.1021/jp050914d] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecules of C60 covalently connected with N-ethylcarbazole (EtCz) and triphenylamine (TPA) have been synthesized. Photoinduced electron transfer in C60-EtCz and C60-TPA has been studied in polar and nonpolar solvents using time-resolved transient absorption and fluorescence measurements. From the fluorescence lifetimes, the excited singlet state of the C60 moiety (1C60) of C60-TPA generates predominantly C60*--TPA*+, which decays quickly to the ground state within 6 ns even in polar solvents. In the case of C60-EtCz, on the other hand, about half of the 1C60 moiety generates short-lived C60*--EtCz*+, while the other half of the 1C60 moiety is transferred to the 3C60 moiety via intersystem crossing in dimethylformamide, in which the energy level of C60*--EtCz*+ is lower than that of 3C60. Thus, the charge separation takes place via 3C60 generating C60*--EtCz*+, having a lifetime as long as 300 ns, probably because of the triplet spin character of C60*--EtCz*+. A special property of the EtCz moiety to stabilize the hole in the charge-separated state was revealed.
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Affiliation(s)
- He-Ping Zeng
- Institute of Functional Molecular, South China University of Technology, Guangzhou 510641, People's Republic of China.
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Abstract
OBJECTIVES We have recently proposed that chloride (Cl(-)) channels contribute to ischemic preconditioning (IPC) in the myocardium. To further evaluate this hypothesis, we investigated the role of Cl(-) channels in pharmacological preconditioning. METHODS Isolated rabbit cardiomyocytes and isolated buffer-perfused rabbit hearts were initially preconditioned with a 10 min exposure to either an adenosine receptor agonist [2-chloro-N(6)-cyclopentyladenosine (CCPA, 200 nM) and/or N(6)-2-(4-aminophenyl)ethyladenosine (APNEA, 1 microM)] or the PKC activator phorbol 12-myristate 13-acetate (PMA, 1 microM) followed by a 10 or 20 min washout or not preconditioned (control). Cardiomyocytes or whole hearts were then subjected to prolonged ischemic period (45 min simulated ischemia or 40 min of regional myocardial ischemia, respectively) followed by 60 min reperfusion (resuspension in oxygenated medium or release of the transient coronary occlusion, respectively). RESULTS Indanyloxyacetic acid 94, a selective Cl(-) channel inhibitor that produced substantial inhibition of the regulatory volume decrease (RVD) when given at 10 microM concentration in cultured cardiomyocytes, was administered before ischemia to block RVD through Cl(-) channel inhibition. CCPA, APNEA and PMA significantly (P<0.01) reduced the % of dead cardiomyocytes (by trypan blue staining) after 45 min SI/60 min SR, as compared to controls, while IAA-94 abolished this protection but did not affect PKCepsilon translocation by IPC. We confirmed that IAA-94 blocked IPC-, APNEA- and PMA-induced protection against infarction in the isolated heart model. CONCLUSIONS These findings support our contention that Cl(-) channels are downstream effectors of IPC.
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Affiliation(s)
- Michelle Batthish
- Division of Cardiovascular Research, Research Institute, The Hospital for Sick Children, Ontario, Toronto, Canada
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Zeng HP, Diaz RJ, Hinek A, Wilson GJ. 04 Opening of mitochondrial KATP channels with diazoxide triggers PKCε translocation in rabbit hearts. J Mol Cell Cardiol 2002. [DOI: 10.1016/s0022-2828(02)90188-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dai J, Bian GQ, Wang X, Xu QF, Zhou MY, Munakata M, Maekawa M, Tong MH, Sun ZR, Zeng HP. A New Method to Synthesize Unsymmetrical Dithiolene Metal Complexes of 1,3-Dithiole-2-thione-4,5-dithiolate for Third-Order Nonlinear Optical Applications. J Am Chem Soc 2000. [DOI: 10.1021/ja001976e] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jie Dai
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - Guo-Qing Bian
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - Xin Wang
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - Qing-Feng Xu
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - Min-Yan Zhou
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - Megumu Munakata
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - Masahiko Maekawa
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - Ming-Hong Tong
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - Zhen-Rong Sun
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
| | - He-Ping Zeng
- Department of Chemistry, Suzhou University Suzhou 215006, P.R. China Department of Chemistry, Kinki University Kowakae, Higashi-Osaka 577-8502, Japan Laboratory for Quantum Optics Department of Physics East China Normal University Shanghai, 200062, P.R. China
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Du JB, Zhao B, Zeng HP, Huang LY, Li SZ. Some humoral factors and their interaction on acute hypoxic pulmonary pressor response. Chin Med J (Engl) 1994; 107:142-5. [PMID: 8194382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
To determine the effect of humoral factors and their interaction on the development of acute hypoxic pulmonary pressor response (HPPR), we performed studies in 16 mongrel dogs. We measured plasma levels of noradrenaline (NE), angiotensin II (AII), prostaglandin F2 alpha (PGF2 alpha), 6-keto-prostaglandin F1 alpha (6KPGF1 alpha), thromboxane B2 (TXB2), leukotriene B4 (LTB4) and 5-hydroxytryptamine (5-HT) before, during and after HPPR. Multiple regression analysis showed that the changes of pulmonary arterial systolic pressure (PASP) and pulmonary arterial diastolic pressure (PADP) correlated well with those of plasma concentration of NE, PGF2 alpha and 6KPGF1 alpha, respectively (r were equal to 0.633 and 0.668, respectively, P < 0.01). The results of orthogonal experiment analysis with an injection of exogenous NE, PGF2 alpha and PGI alpha into main pulmonary artery of dogs showed that NE and the interaction of PGF2 alpha and PGI2 alpha increased PASP (P < 0.05) and PGI2 attenuated PASP (P < 0.01). The interaction of PGF2 alpha and PGI2 and of PGF2 alpha and NE increased PADP(P < 0.01) and PGI2 attenuated PADP (P < 0.01).
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Affiliation(s)
- J B Du
- Department of Pediatrics, First Teaching Hospital of Beijing Medical University
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