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Zhang QY, Ding W, Mo JS, Ou-Yang SM, Lin ZY, Peng KR, Liu GP, Lu JJ, Yue PB, Lei JP, Wang YD, Zhang XL. Novel STAT3 oligonucleotide compounds suppress tumor growth and overcome the acquired resistance to sorafenib in hepatocellular carcinoma. Acta Pharmacol Sin 2024:10.1038/s41401-024-01261-4. [PMID: 38609562 DOI: 10.1038/s41401-024-01261-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 03/03/2024] [Indexed: 04/14/2024] Open
Abstract
Signal transducer and activator of transcription 3 (STAT3) plays an important role in the occurrence and progression of tumors, leading to resistance and poor prognosis. Activation of STAT3 signaling is frequently detected in hepatocellular carcinoma (HCC), but potent and less toxic STAT3 inhibitors have not been discovered. Here, based on antisense technology, we designed a series of stabilized modified antisense oligonucleotides targeting STAT3 mRNA (STAT3 ASOs). Treatment with STAT3 ASOs decreased the STAT3 mRNA and protein levels in HCC cells. STAT3 ASOs significantly inhibited the proliferation, survival, migration, and invasion of cancer cells by specifically perturbing STAT3 signaling. Treatment with STAT3 ASOs decreased the tumor burden in an HCC xenograft model. Moreover, aberrant STAT3 signaling activation is one of multiple signaling pathways involved in sorafenib resistance in HCC. STAT3 ASOs effectively sensitized resistant HCC cell lines to sorafenib in vitro and improved the inhibitory potency of sorafenib in a resistant HCC xenograft model. The developed STAT3 ASOs enrich the tools capable of targeting STAT3 and modulating STAT3 activity, serve as a promising strategy for treating HCC and other STAT3-addicted tumors, and alleviate the acquired resistance to sorafenib in HCC patients. A series of novel STAT3 antisense oligonucleotide were designed and showed potent anti-cancer efficacy in hepatocellular carcinoma in vitro and in vivo by targeting STAT3 signaling. Moreover, the selected STAT3 ASOs enhance sorafenib sensitivity in resistant cell model and xenograft model.
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Affiliation(s)
- Qi-Yi Zhang
- National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Wen Ding
- National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jian-Shan Mo
- National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Shu-Min Ou-Yang
- National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Zi-You Lin
- National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Ke-Ren Peng
- National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Guo-Pin Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Pei-Bin Yue
- Department of Medicine, Division of Hematology-Oncology, and Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Jin-Ping Lei
- National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yan-Dong Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China.
| | - Xiao-Lei Zhang
- National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China.
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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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Chen WM, Lin ZY. [Controversies on the diagnosis and treatment of relapsed/refractory multiple myeloma]. Zhonghua Yi Xue Za Zhi 2022; 102:2311-2314. [PMID: 35970789 DOI: 10.3760/cma.j.cn112137-20220606-01251] [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: 06/15/2023]
Abstract
With the widely usage of proteasome inhibitors, immunomodulating agents, monoclonal antibodies and autologous stem cell transplantation in the first line, most of multiple myeloma(MM) patients achieved high response rate and prolonged the survival period, but most of MM patients will relapse eventually. There are a lot of unmet needs for the management of relapse and refractory myeloma (RRMM). Although there are several guidelines for the diagnosis and treatment of RRMM, but doctors often find some controversies in clinical practice. The controversies will be discussed in this paper expected to guide the practice of younger doctors.
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Affiliation(s)
- W M Chen
- Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Z Y Lin
- Department of Hematology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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Mai L, Mashrah MA, Lin ZY, Yan LJ, Xie S, Pan C. Posterior tibial artery flap versus radial forearm flap in oral cavity reconstruction and donor site morbidity. Int J Oral Maxillofac Surg 2022; 51:1401-1411. [PMID: 35597669 DOI: 10.1016/j.ijom.2022.03.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 11/29/2022]
Abstract
The repair of soft tissue defects after oral cavity cancer resection is challenging. The aim of this study was to compare the outcomes and donor site morbidity of the radial forearm free flap (RFF) and posterior tibial artery perforator flap (PTAF) for oral cavity reconstruction after cancer ablation. All patients who underwent oral cavity reconstruction with a RFF or PTAF between January 2017 and December 2019 were included retrospectively in this study. All flaps were harvested with a long adipofascial extension. The donor site defects were closed with a triangular full-thickness skin graft harvested adjacent to the flap. Flap outcomes and donor site complications were recorded and compared. The study included 145 patients; 30 underwent reconstruction with a RFF and 115 with a PTAF. No significant difference between the PTAF and RFF was observed concerning the flap survival rate (98.3% vs 96.7%), flap harvest time (53.39 vs 49.28 min), hospital stay (12.3 vs 15.2 days), or subjective functional and cosmetic outcomes. The PTAF showed a larger vascular calibre (P < 0.05), greater flap thickness (P = 0.002), and lower frequency of surgical site infection (P = 0.055) when compared to the RFF. No significant difference was observed between the pre- and postoperative ranges of ankle and wrist movements. The PTAF is an excellent alternative to the RFF for the repair of oral cavity defects, with the additional advantages of a well-hidden scar on the lower extremity, larger vascular calibre, and lower frequencies of postoperative donor site morbidities.
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Affiliation(s)
- L Mai
- Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - M A Mashrah
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangdong, Guangzhou, China
| | - Z Y Lin
- Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - L J Yan
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangdong, Guangzhou, China
| | - S Xie
- Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - C Pan
- Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
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Li QX, Cao HT, Li YY, Ou ZP, Lin XY, Zhang HQ, Lin ZY, Wang YY, Xie SL, Pan CB, Zhang B, Wang JG, Chen WL, Huang ZQ, Fan S, Li JS. [Evaluation of the effect of free fibular flap transplantation in repairing mandibular osteoradionecrosis defect in 151 cases]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:428-434. [PMID: 33904276 DOI: 10.3760/cma.j.cn112144-20210122-00036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical effect of free fibula flap transplantation in repairing the defect of mandibular osteoradionecrosis (ORN). Methods: A total of 151 mandibular ORN patients undergoing free fibular flap transplantation were selected from August 2005 to September 2020 in the Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University. Among them, 109 patients were males and 42 patients were females, aged (54.1±10.1) (ranged 31-85) years old. The clinical data of the patients was collected and the survival rate of the flaps and postoperative function were calculated to evaluate the surgical efficacy. The χ2 test was used for difference analysis. Results: Among the 151 patients, mandibular ORN caused by radiotherapy for nasopharyngeal carcinoma accounted for 79.5% (120/151). The average time for mandibular ORN appeared was 5(6) years after radiotherapy. Facial artery [57.2%(87/152)] and superior thyroid artery (50/152, 32.9%) were the main anastomotic arteries in the recipient area. There was no significant difference in the necrosis rates of the two flaps [10.3%(9/87) and 12.5%(5/50), respectively, P=0.949]. The main anastomotic veins in the recipient area were the external jugular vein [48.4%(135/279)] and the common facial vein [26.5%(74/279)]. Twenty-five cases (16.6%) had one vein anastomosed, and 126 cases (83.44%) had two veins anastomosed. There was no significant difference in the flap necrosis rate between the two conditions [20.0%(5/25) and 7.1%(9/126), respectively, P=0.100]. Ninety-seven cases (64.2%) used the peroneal musculocutaneous-fascia composite flap to repair the maxillofacial soft and hard tissue defects. Thirteen cases (8.6%) underwent the restorations with digital virtual surgery design, of which 5 cases were repaired with dental implants at the same time. After the operations, lower respiratory tract infection occurred in 17 patients (11.3%), and upper respiratory tract obstruction occurred in 3 cases (2.0%). The survival rate of the flap after operation was 90.7% (136/151), and 21 patients (13.9%) had flap vascular crisis. Delayed healing of maxillofacial wounds occurred in 33 cases (21.9%). After 3 to 24 months of follow-ups, 110 patients (76.9%) had no fistula inside/outside the oral cavity, 118 patients (82.5%) had an improvement in opening mouth of increasing (≥0.5 cm) after surgery, 135 patients (94.4%) had pain relief, 97 cases (67.8%) could eat normal diet, semi-liquid or soft food, and 137 cases (95.8%) were satisfied or basically satisfied with the treatment effects. Conclusions: The free fibular flap transplantation is an effective method to repair mandibular ORN defects. Preoperative vascular assessment is helpful for the selection of recipient vessels. Facial artery, superior thyroid artery, external jugular vein and common facial vein can be used as the main recipient vessels. The repair of the peroneal musculocutaneous-fascia composite flap facilitates the closure of internal and external fistulas. Digital technology can help to restore the maxillofacial shape more accurately, improve the patient's occlusal and chewing function and enhance the quality of life of mandibular ORN patients.
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Affiliation(s)
- Q X Li
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - H T Cao
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - Y Y Li
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - Z P Ou
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - X Y Lin
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - H Q Zhang
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - Z Y Lin
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - Y Y Wang
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - S L Xie
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - C B Pan
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - B Zhang
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - J G Wang
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - W L Chen
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - Z Q Huang
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - S Fan
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
| | - J S Li
- Department of Oral and Maxillofacial Surgery, Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, Guangzhou 510120, China
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Tsai HY, Wu HH, Chou BC, Li CS, Gau BZ, Lin ZY, Fuh CB. A magneto-microfluidic platform for fluorescence immunosensing using quantum dot nanoparticles. Nanotechnology 2019; 30:505101. [PMID: 31557130 DOI: 10.1088/1361-6528/ab423d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study reports the online fluorescent detection of carcinoembryonic antigen (CEA) and α-fetoprotein (AFP) biomarker proteins in microfluidic channels using functional nanoparticles. Functional magnetic nanoparticles labeled with two antibodies were predeposited on separated microfluidic channels. Antigens were passed through each microfluidic channel to react with the respective antibodies. Two types of fluorescent nanoparticles labeled with antibodies were then used to detect and confirm antigens in the immunocomplex. Results indicate that online fluorescent detection of proteins can provide advantages for real-time monitoring and diagnostic applications. The running time was less than 20 min for each trial. The detection limits of CEA and AFP were found to be 0.6 and 0.2 pg ml-1. These detection limits are lower than those of ELISA. The linear ranges of CEA and AFP detection were from 1.8 pg ml-1 to 1.8 ng ml-1 and from 0.68 pg ml-1 to 0.68 ng ml-1 for two deposition zones in a magnetic sandwich immunoassay. The linear ranges of this method are wider than those of ELISA and those of most other methods. The measurements of CEA and AFP in serum samples from this method differed from ELISA results by 11% and 9.4%, respectively. The detection limit of online detection has achieved the same range as those of previous offline detection. This method has a good potential for automation and multichannel analysis to increase the throughput with some modifications in the future. The proposed method can provide simple, fast, and sensitive online detection for biomarkers.
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Affiliation(s)
- H Y Tsai
- School of Medical Applied Chemistry, Chung Shan Medical University, Taichung 402, Taiwan. Department of Medical Education, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
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Guan F, Peng WC, Huang H, Dai B, Zhu GT, Mao BB, Xiao ZY, Lin ZY, Hu ZQ. [Efficacy analysis of soft neuroendoscopic techniques in the treatment of chronic subdural hematoma]. Zhonghua Yi Xue Za Zhi 2019; 99:695-699. [PMID: 30831620 DOI: 10.3760/cma.j.issn.0376-2491.2019.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the efficacy of soft neuroendoscopic techniques in the treatment of chronic subdural hematoma (CSDH). Methods: A retrospective analysis of 201 cases of CSDH diagnosed and treated at Beijing Shijitan Hospital (CMU) from January 2006 to December 2017 was conducted. From January 2006 to December 2010, 126 cases of CSDH were treated with skull drilling and drainage (non-endoscopic group). From January 2011 to December 2017, 75 cases of CSDH were treated with soft neuroendoscopy (endoscopic group). The operation time of the non-endoscopic and endoscopic groups, the hematoma clearance rate on the first day after surgery, the time of the drainage tube, the length of hospital stay, the incidence of complications, mortality and recurrence rate were compared. Results: There were no deaths in both groups. The average operation time of the non-endoscopic group was 43 min, compared with the average operation time of the endoscopy group of 50 min, there was no significant difference (P>0.05). The average hematoma clearance rate on the first day after surgery in the endoscopy group (98.2%) was significantly higher than that in non-endoscopic group (87.3%) (P<0.01). The average time of drainage tube in the endoscopy group (23 h) was significantly shorter than that in the non-endoscopic group (50 h) (P<0.01). On the first postoperative day, the proportion of patients with mRS≤3 in the endoscopic group was significantly higher than that in the non-endoscopic group (P<0.01). At the time of discharge, the proportion of patients with mRS≤3 in the endoscopy group was also significantly higher than that in the non-endoscopic group, P<0.05. There was no significant difference in the average hospital stay between endoscopy group (7 d) and non-endoscopic group (8 d) (P>0.05). The postoperative complication rate in the endoscopy group was significantly lower than that in the non-endoscopic group (P<0.01). During 0.5-8 years of follow-up, the recurrence rate of CSDH in the endoscopic group (5.33%) was significantly lower than that in the non-endoscopic group (15.07%) (P<0.01). Conclusion: The application of visualization features of soft neuroendoscopy in the treatment of CSDH can significantly improve hematoma clearance, shorten the time of drainage tube, reduce postoperative complications and recurrence rate, and improve surgical outcomes.
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Affiliation(s)
- F Guan
- Department of Neurosurgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Zheng XB, Gao ZW, Mo HB, Lin Q, Wang HQ, Yu LH, Lin YX, Kang DZ, Lin ZY. [Neuronavigation-assisted percutaneous radiofrequency thermocoagulation of trigeminal gasserian ganglion for refractory craniofacial pain]. Zhonghua Yi Xue Za Zhi 2018; 98:3519-3523. [PMID: 30481902 DOI: 10.3760/cma.j.issn.0376-2491.2018.43.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Percutaneous radiofrequency thermocoagulation (RFT) of the Gasserian ganglion is an effective treatment for refractory trigeminal craniofacial pain.In the present study, we assessed the feasibility of accessing the Gasserian ganglion through the foramen ovale with neuronavigation guidance in the patients of trigeminal craniofacial pain. Method: We retrospectively analyzed forty-four patients with type Ⅰ trigeminal neuralgia who had undergone percutaneous RFT treatment in our hospital from June 2014 to December 2016.The patients were divided into fluoroscopy group and navigation group according to the intraoperative guiding manners for foramen ovale cannulation.We compared groups in terms of the duration of the whole RFT procedure and times of intraoperative fluoroscopy.We also analyzed the immediate and late outcome accessing by Barrow Neurological Institute (BNI) pain scale, as well as the complication rates in groups. Result: There were 32 patients in the fluoroscopy group and 12 in the navigation group.The duration of the surgical procedure in navigation group was less than that in fluoroscopy group (46±12 min versus 67±16 min, P=0.00), and times of intraoperative fluoroscopy was reduced (6.3±2.2 versus 1.3±1.6, P=0.00). The learning curve of navigation-aid RFT was not steep in the present study overall.There was no significant difference between groups regarding pain reduction at the immediate (P=0.07) or late follow-up (P=0.400) time points.However, the rate of pain reduction to BNI-Ⅰ grade was greater in navigation group (P=0.026). No significant difference in the complication rate between both groups, and no serious complications were observed in the both groups. Conclusion: Neuronavigation may be encouraged in trigeminal Gasserian ganglion RFT with better operating efficiency and less radiation exposure.The immediate and late therapeutic effects for craniofacial pain control were positive, whereas further studies are necessary.
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Affiliation(s)
- X B Zheng
- Department of Neurosurgery, the First Affiliated Hospital of Fujian Medical University, Neurological Center of Fujian Province, Fuzhou 350000, China
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Xia J, Xue JY, Chen K, Lin ZY, Wu WJ, Zhao QF. [The role of high-mobility group box protein 1 in the signaling pathways of myocardial ischemia-reperfusion injury in rats]. Zhonghua Yi Xue Za Zhi 2018; 98:3268-3273. [PMID: 30392294 DOI: 10.3760/cma.j.issn.0376-2491.2018.40.011] [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 role of high-mobility group box protein 1 (HMGB1) in the signaling pathways of myocardial ischemia-reperfusion injury (MIRI) in rats. Methods: Forty male Sprague-Dawley rats, weighing 200-250 g, were randomly divided into 4 groups (n=10) using a random number table: sham operation group (group sham), MIRI group (group IR-C), anti-HMGB1 antibody group (group IR-H-Ig), contrast antibody control group (group IR-Ig). The rat model of MIRI was established by 30 min occlusion of left anterior descending branch (LAD) of coronary artery followed by 180 min reperfusion. In sham group, no blocking of LAD was adopted after thoracotomy. Anti-HMGB1 antibody and contrast antibody immunoglobulin G (IgG) (2 mg/kg) were injected respectively at 30 min of reperfusion in IR-H-Ig and IR-Ig groups. Blood samples were collected from the femoral vein for determination of interleukin 6 (IL-6), tumor necrosis factor α (TNF-α), HMGB1, creatine kinase-MB (CK-MB) and cardiac troponin I (cTnI) concentrations at 180 min of reperfusion. The rats were then sacrificed after blood samples were taken and the pathological changes of myocardial tissue were observed. The mRNA and protein expressions of HMGB1, toll-like receptor 4(TLR4) and nuclear factor (NF)-κB in myocardial tissues were detected by Western blot and real-time quantitative PCR respectively. Results: Compared with the Sham group, the plasma level of IL-6, TNF-α, HMGB1 increased significantly and HMGB1, TLR4 and NF-κB mRNA and protein levels of myocardial tissues up-regulated in IR-C and IR-Ig groups (all P<0.05). The plasma level of CK-MB and cTnI increased significantly in IR-C, IR-H-Ig, IR-Ig group (all P<0.05). Compared with the IR-C group, the levels of the plasma HMGB1, the cytokines mentioned above, CK-MB and cTnI were significantly decreased, and mRNA and protein expressions of HMGB1, TLR4 and NF-κB of myocardial tissues down-regulated in IR-H-Ig group (all P<0.05). Inflammatory cell infiltration in MIRI groups increased significantly, while it was significantly reduced in IR-H-Ig group. Conclusion: Blocking the combination of HMGB1 and TLR4 can effectively alleviate the tissue damage caused by myocardial ischemia-reperfusion in rats.
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Affiliation(s)
- J Xia
- Department of Cardiovascular and Thoracic Surgery, Children's Heart Center, the Second Affiliated Hospital & Yuying Children's Hospital, Institute of Cardiovascular Development and Translational Medicine, Wenzhou Medical University, Wenzhou 325027, China
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Snodgrass C, A'Hearn MF, Aceituno F, Afanasiev V, Bagnulo S, Bauer J, Bergond G, Besse S, Biver N, Bodewits D, Boehnhardt H, Bonev BP, Borisov G, Carry B, Casanova V, Cochran A, Conn BC, Davidsson B, Davies JK, de León J, de Mooij E, de Val-Borro M, Delacruz M, DiSanti MA, Drew JE, Duffard R, Edberg NJT, Faggi S, Feaga L, Fitzsimmons A, Fujiwara H, Gibb EL, Gillon M, Green SF, Guijarro A, Guilbert-Lepoutre A, Gutiérrez PJ, Hadamcik E, Hainaut O, Haque S, Hedrosa R, Hines D, Hopp U, Hoyo F, Hutsemékers D, Hyland M, Ivanova O, Jehin E, Jones GH, Keane JV, Kelley MSP, Kiselev N, Kleyna J, Kluge M, Knight MM, Kokotanekova R, Koschny D, Kramer EA, López-Moreno JJ, Lacerda P, Lara LM, Lasue J, Lehto HJ, Levasseur-Regourd AC, Licandro J, Lin ZY, Lister T, Lowry SC, Mainzer A, Manfroid J, Marchant J, McKay AJ, McNeill A, Meech KJ, Micheli M, Mohammed I, Monguió M, Moreno F, Muñoz O, Mumma MJ, Nikolov P, Opitom C, Ortiz JL, Paganini L, Pajuelo M, Pozuelos FJ, Protopapa S, Pursimo T, Rajkumar B, Ramanjooloo Y, Ramos E, Ries C, Riffeser A, Rosenbush V, Rousselot P, Ryan EL, Santos-Sanz P, Schleicher DG, Schmidt M, Schulz R, Sen AK, Somero A, Sota A, Stinson A, Sunshine JM, Thompson A, Tozzi GP, Tubiana C, Villanueva GL, Wang X, Wooden DH, Yagi M, Yang B, Zaprudin B, Zegmott TJ. The 67P/Churyumov-Gerasimenko observation campaign in support of the Rosetta mission. Philos Trans A Math Phys Eng Sci 2017; 375:rsta.2016.0249. [PMID: 28554971 PMCID: PMC5454223 DOI: 10.1098/rsta.2016.0249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/21/2016] [Indexed: 05/15/2023]
Abstract
We present a summary of the campaign of remote observations that supported the European Space Agency's Rosetta mission. Telescopes across the globe (and in space) followed comet 67P/Churyumov-Gerasimenko from before Rosetta's arrival until nearly the end of the mission in September 2016. These provided essential data for mission planning, large-scale context information for the coma and tails beyond the spacecraft and a way to directly compare 67P with other comets. The observations revealed 67P to be a relatively 'well-behaved' comet, typical of Jupiter family comets and with activity patterns that repeat from orbit to orbit. Comparison between this large collection of telescopic observations and the in situ results from Rosetta will allow us to better understand comet coma chemistry and structure. This work is just beginning as the mission ends-in this paper, we present a summary of the ground-based observations and early results, and point to many questions that will be addressed in future studies.This article is part of the themed issue 'Cometary science after Rosetta'.
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Affiliation(s)
- C Snodgrass
- School of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK
| | - M F A'Hearn
- Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
| | - F Aceituno
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - V Afanasiev
- Special Astrophysical Observatory, Russian Academy of Sciences, Nizhny Arkhyz, Russia
| | - S Bagnulo
- Armagh Observatory, College Hill, Armagh BT61 9DG, UK
| | - J Bauer
- Jet Propulsion Laboratory, M/S 183-401, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
| | - G Bergond
- Centro Astronómico Hispano-Alemán, Calar Alto, CSIC-MPG, Sierra de los Filabres-04550 Gérgal (Almería), Spain
| | - S Besse
- ESA/ESAC, PO Box 78, 28691 Villanueva de la Cañada, Spain
| | - N Biver
- LESIA, Observatoire de Paris, CNRS, UPMC Univ. Paris 06, Univ. Paris-Diderot, 5 Place J. Janssen, 92195 Meudon Pricipal Cedex, France
| | - D Bodewits
- Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
| | - H Boehnhardt
- Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany
| | - B P Bonev
- Department of Physics, American University, 4400 Massachusetts Avenue NW, Washington, DC 20016, USA
| | - G Borisov
- Armagh Observatory, College Hill, Armagh BT61 9DG, UK
- Institute of Astronomy and National Astronomical Observatory, 72 Tsarigradsko Chaussée Boulevard, BG-1784 Sofia, Bulgaria
| | - B Carry
- Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Lagrange, France
- IMCCE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Lille, France
| | - V Casanova
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - A Cochran
- University of Texas Austin/McDonald Observatory, 1 University Station, Austin, TX 78712, USA
| | - B C Conn
- Research School of Astronomy and Astrophysics, The Australian National University, Canberra, Australian Capital Territory, Australia
- Gemini Observatory, Recinto AURA, Colina El Pino s/n, Casilla 603, La Serena, Chile
| | - B Davidsson
- Jet Propulsion Laboratory, M/S 183-401, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
| | - J K Davies
- The UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK
| | - J de León
- Instituto de Astrofísica de Canarias (IAC), C/Vía Láctea s/n, 38205 La Laguna, Spain
- Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
| | - E de Mooij
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, UK
| | - M de Val-Borro
- Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
- NASA Goddard Space Flight Center, Astrochemistry Laboratory, Code 693.0, Greenbelt, MD 20771, USA
- Department of Physics, The Catholic University of America, Washington, DC 20064, USA
| | - M Delacruz
- Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - M A DiSanti
- NASA Goddard Space Flight Center, Astrochemistry Laboratory, Code 693.0, Greenbelt, MD 20771, USA
| | - J E Drew
- School of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
| | - R Duffard
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - N J T Edberg
- Swedish Institute of Space Physics, Ångströmlaboratoriet, Lägerhyddsvägen 1, 751 21 Uppsala, Sweden
| | - S Faggi
- INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50 125 Firenze, Italy
| | - L Feaga
- Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
| | - A Fitzsimmons
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, UK
| | - H Fujiwara
- Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, HI 96720, USA
| | - E L Gibb
- Department of Physics and Astronomy, University of Missouri - St. Louis, St. Louis, MO 63121, USA
| | - M Gillon
- Institut d'Astrophysique et de Géophysique, Université de Liège, allée du 6 Août 17, 4000 Liège, Belgium
| | - S F Green
- School of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK
| | - A Guijarro
- Centro Astronómico Hispano-Alemán, Calar Alto, CSIC-MPG, Sierra de los Filabres-04550 Gérgal (Almería), Spain
| | - A Guilbert-Lepoutre
- Institut UTINAM, UMR 6213 CNRS-Université de Franche Comté, Besançon, France
| | - P J Gutiérrez
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - E Hadamcik
- CNRS/INSU; UPMC (Sorbonne Univ.); UVSQ (UPSay); LATMOS-IPSL, 11 Bld d'Alembert, 78280 Guyancourt, France
| | - O Hainaut
- European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
| | - S Haque
- Department of Physics, University of the West Indies, St Augustine, Trinidad, West Indies
| | - R Hedrosa
- Centro Astronómico Hispano-Alemán, Calar Alto, CSIC-MPG, Sierra de los Filabres-04550 Gérgal (Almería), Spain
| | - D Hines
- Space Telescope Science Institute, Baltimore, MD 21218, USA
| | - U Hopp
- University Observatory, Ludwig-Maximilian-University Munich, Scheiner Strasse 1, 81679 Munich, Germany
| | - F Hoyo
- Centro Astronómico Hispano-Alemán, Calar Alto, CSIC-MPG, Sierra de los Filabres-04550 Gérgal (Almería), Spain
| | - D Hutsemékers
- Institut d'Astrophysique et de Géophysique, Université de Liège, allée du 6 Août 17, 4000 Liège, Belgium
| | - M Hyland
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, UK
| | - O Ivanova
- Astronomical Institute of the Slovak Academy of Sciences, 05960 Tatranská Lomnica, Slovak Republic
| | - E Jehin
- Institut d'Astrophysique et de Géophysique, Université de Liège, allée du 6 Août 17, 4000 Liège, Belgium
| | - G H Jones
- Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking RH5 6NT, UK
- The Centre for Planetary Sciences at UCL/Birkbeck, Gower Street, London WC1E 6BT, UK
| | - J V Keane
- Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - M S P Kelley
- Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
| | - N Kiselev
- Main Astronomical Observatory of National Academy of Sciences, Kyiv, UKraine
| | - J Kleyna
- Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - M Kluge
- University Observatory, Ludwig-Maximilian-University Munich, Scheiner Strasse 1, 81679 Munich, Germany
| | - M M Knight
- Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
| | - R Kokotanekova
- School of Physical Sciences, The Open University, Milton Keynes MK7 6AA, UK
- Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany
| | - D Koschny
- Research and Scientific Support Department, European Space Agency, 2201 Noordwijk, The Netherlands
| | - E A Kramer
- Jet Propulsion Laboratory, M/S 183-401, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
| | - J J López-Moreno
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - P Lacerda
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, UK
| | - L M Lara
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - J Lasue
- Université de Toulouse, UPS-OMP, IRAP-CNRS, Toulouse, France
| | - H J Lehto
- Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, 21500 Piikkiö, Finland
| | - A C Levasseur-Regourd
- UPMC (Sorbonne Univ.); UVSQ (UPSay); CNRS/INSU; LATMOS-IPSL, BC 102, 4 Place Jussieu, 75005 Paris, France
| | - J Licandro
- Instituto de Astrofísica de Canarias (IAC), C/Vía Láctea s/n, 38205 La Laguna, Spain
- Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
| | - Z Y Lin
- Graduate Institute of Astronomy, National Central University, No. 300 Zhongda Road, Zhongli District, Taoyuan City, 320 Taiwan
| | - T Lister
- Las Cumbres Observatory, 6740 Cortona Drive, Ste. 102, Goleta, CA 93117, USA
| | - S C Lowry
- Centre for Astrophysics and Planetary Science, School of Physical Sciences, The University of Kent, Canterbury CT2 7NH, UK
| | - A Mainzer
- Jet Propulsion Laboratory, M/S 183-401, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
| | - J Manfroid
- Institut d'Astrophysique et de Géophysique, Université de Liège, allée du 6 Août 17, 4000 Liège, Belgium
| | - J Marchant
- Astrophysics Research Institute, Liverpool John Moores University, Liverpool L3 5RF, UK
| | - A J McKay
- University of Texas Austin/McDonald Observatory, 1 University Station, Austin, TX 78712, USA
- NASA Goddard Space Flight Center, Astrochemistry Laboratory, Code 693.0, Greenbelt, MD 20771, USA
| | - A McNeill
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, UK
| | - K J Meech
- Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - M Micheli
- ESA SSA-NEO Coordination Centre, Frascati (RM), Italy
| | - I Mohammed
- Caribbean Institute of Astronomy, Trinidad, West Indies
| | - M Monguió
- School of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
| | - F Moreno
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - O Muñoz
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - M J Mumma
- NASA Goddard Space Flight Center, Astrochemistry Laboratory, Code 693.0, Greenbelt, MD 20771, USA
| | - P Nikolov
- Institute of Astronomy and National Astronomical Observatory, 72 Tsarigradsko Chaussée Boulevard, BG-1784 Sofia, Bulgaria
| | - C Opitom
- Institut d'Astrophysique et de Géophysique, Université de Liège, allée du 6 Août 17, 4000 Liège, Belgium
- European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile
| | - J L Ortiz
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - L Paganini
- NASA Goddard Space Flight Center, Astrochemistry Laboratory, Code 693.0, Greenbelt, MD 20771, USA
| | - M Pajuelo
- IMCCE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Lille, France
- Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Apartado 1761, Lima, Perú
| | - F J Pozuelos
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
- Institut d'Astrophysique et de Géophysique, Université de Liège, allée du 6 Août 17, 4000 Liège, Belgium
| | - S Protopapa
- Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
| | - T Pursimo
- Nordic Optical Telescope, Apartado 474, 38700 Santa Cruz de La Palma, Santa Cruz de Tenerife, Spain
| | - B Rajkumar
- Department of Physics, University of the West Indies, St Augustine, Trinidad, West Indies
| | - Y Ramanjooloo
- Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
| | - E Ramos
- Centro Astronómico Hispano-Alemán, Calar Alto, CSIC-MPG, Sierra de los Filabres-04550 Gérgal (Almería), Spain
| | - C Ries
- University Observatory, Ludwig-Maximilian-University Munich, Scheiner Strasse 1, 81679 Munich, Germany
| | - A Riffeser
- University Observatory, Ludwig-Maximilian-University Munich, Scheiner Strasse 1, 81679 Munich, Germany
| | - V Rosenbush
- Main Astronomical Observatory of National Academy of Sciences, Kyiv, UKraine
| | - P Rousselot
- University of Franche-Comté, Observatoire des Sciences de l'Univers THETA, Institut UTINAM - UMR CNRS 6213, BP 1615, 25010 Besançon Cedex, France
| | - E L Ryan
- SETI Institute, 189 Bernardo Avenue Suite 200, Mountain View, CA 94043, USA
| | - P Santos-Sanz
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - D G Schleicher
- Lowell Observatory, 1400 W. Mars Hill Road, Flagstaff, AZ 86001, USA
| | - M Schmidt
- University Observatory, Ludwig-Maximilian-University Munich, Scheiner Strasse 1, 81679 Munich, Germany
| | - R Schulz
- Scientific Support Office, European Space Agency, 2201 AZ Noordwijk, The Netherlands
| | - A K Sen
- Department of Physics, Assam University, Silchar 788011, India
| | - A Somero
- Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, 21500 Piikkiö, Finland
| | - A Sota
- Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, 18008 Granada, Spain
| | - A Stinson
- Armagh Observatory, College Hill, Armagh BT61 9DG, UK
| | - J M Sunshine
- Department of Astronomy, University of Maryland, College Park, MD 20742-2421, USA
| | - A Thompson
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, UK
| | - G P Tozzi
- INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50 125 Firenze, Italy
| | - C Tubiana
- Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany
| | - G L Villanueva
- NASA Goddard Space Flight Center, Astrochemistry Laboratory, Code 693.0, Greenbelt, MD 20771, USA
| | - X Wang
- Yunnan Observatories, CAS, China, PO Box 110, Kunming 650011, Yunnan Province, People's Republic of China
- Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650011, People's Republic of China
| | - D H Wooden
- NASA Ames Research Center, MS 245-3, Moffett Field, CA 94035-1000, USA
| | - M Yagi
- National Astronomical Observatory of Japan, 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan
| | - B Yang
- European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile
| | - B Zaprudin
- Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, 21500 Piikkiö, Finland
| | - T J Zegmott
- Centre for Astrophysics and Planetary Science, School of Physical Sciences, The University of Kent, Canterbury CT2 7NH, UK
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Fang F, Lin YX, Kang DZ, Wang F, Huang XF, Yu LH, Lin ZY. [Factors associated with the surgical efficacy and prognosis of seizures in patients with low-grade glioma]. Zhonghua Yi Xue Za Zhi 2016; 96:1031-4. [PMID: 27055796 DOI: 10.3760/cma.j.issn.0376-2491.2016.13.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To explore the relevant factors associated with the surgical efficacy and prognosis of seizures in patients with low-grade glioma (LGG). METHODS The clinical cases of seizures in patients with LGG admitted to our department were retrospectively collected from January 2010 to December 2014. A total of 45 cases were studied to analyze the relevant factors associated with the surgical efficacy and prognosis. RESULTS During a follow-up period of 1 to 5 years after surgery, Engel classⅠ to Ⅱ were achieved in 36 patients (80%) and Engel class Ⅲ to Ⅳ in 9 cases (20%). The preoperative epilepsy frequency and the use of intraoperative electrocardiograph (ECoG) were correlated with the surgical efficacy and prognosis (P<0.05). The other factors, such as age, gender, duration of epilepsy, and tumor characteristics, had no significant statistical difference. CONCLUSIONS The surgical efficacy of seizures in patients with LGG is favorable. Our results suggest that preoperative epilepsy frequency and intraoperative ECoG are important factors for surgical efficacy and prognosis. Consequently, based on gross total resection for seizures in patients with LGG, epileptogenic zones should be considered and dealt with by use of ECoG.
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Affiliation(s)
- F Fang
- Department of Neurosurgery, the First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China
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Zhao SS, Lin ZY, Zhu Y. Vitamin K antagonists' use and fracture risk: results from a systematic review and meta-analysis: comment. J Thromb Haemost 2016; 14:219-21. [PMID: 26663818 DOI: 10.1111/jth.13192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 11/04/2015] [Indexed: 12/01/2022]
Affiliation(s)
- S S Zhao
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
| | - Z Y Lin
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
| | - Y Zhu
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
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Zhang HW, Chen XL, Lin ZY, Xia J, Hou JX, Zhou D, Xi Y, Zhang M, Guo J, Feng W, Peng XY, Wu XW. Fibronectin chorused cohesion between endothelial progenitor cells and mesenchymal stem cells of mouse bone marrow. Cell Mol Biol (Noisy-le-grand) 2015; 61:26-32. [PMID: 26025398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 04/17/2015] [Indexed: 06/04/2023]
Abstract
Endothelial progenitor cells (EPCs) could function as niche cells to promote self—renewal of mesenchymal stem cells (MSCs) in the mouse bone marrow. Cohesion was the basis of the two cells to display their biological functions to each other. In this study, we investigated the mechanism of cohesion between MSCs and EPCs. And demonstrated that fibronectin (FN) in EPCs activated the integrin α5β1 of MSCs and further mediated cell-cell cohesion. Integrin α5β1 and its FN ligand played critical roles not only in single—cell line adhesion, but also in adhesion between stem and niche cells. This novel finding is important to understand the cross—talk between MSCs and their niche cells.
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Affiliation(s)
- H W Zhang
- Huazhong University of Science and Technology Tongji Hospital, Tongji Medical School Hubei China
| | - X L Chen
- School of Medicine, Shihezi University Department of Immunology Xinjiang China
| | - Z Y Lin
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - J Xia
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - J X Hou
- Huazhong University of Science and Technology Tongji Hospital, Tongji Medical School Hubei China
| | - D Zhou
- First Affiliated Hospital, School of Medicine, Shihezi University Medical Laboratory Xinjiang China
| | - Y Xi
- Huazhong University of Science and Technology Tongji Hospital, Tongji Medical School Hubei China
| | - M Zhang
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - J Guo
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - W Feng
- School of Medicine, Shihezi University, Shihezi The First Affiliated Hospital Xinjiang China
| | - X Y Peng
- First Affiliated Hospital, School of Medicine, Shihezi University Department of General Surgery Xinjiang China pengxinyu2000@sina.com
| | - X W Wu
- First Affiliated Hospital, School of Medicine, Shihezi University Department of General Surgery Xinjiang China wxwshz@126.com
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Yan JH, Liu P, Lin ZY, Wang H, Chen HJ, Wang CX, Yang GW. Magnetically induced forward scattering at visible wavelengths in silicon nanosphere oligomers. Nat Commun 2015; 6:7042. [PMID: 25940445 PMCID: PMC4432586 DOI: 10.1038/ncomms8042] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [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: 12/18/2014] [Accepted: 03/24/2015] [Indexed: 12/02/2022] Open
Abstract
Electromagnetically induced transparency is a type of quantum interference that induces near-zero reflection and near-perfect transmission. As a classical analogy, metal nanostructure plasmonic ‘molecules' produce plasmon-induced transparency conventionally. Herein, an electromagnetically induced transparency interaction is demonstrated in silicon nanosphere oligomers, wherein the strong magnetic resonance couples with the electric gap mode effectively to markedly suppress reflection. As a result, a narrow-band transparency window created at visible wavelengths, called magnetically induced transparency, is easily realized in nearly touching silicon nanospheres, exhibiting low dependence on the number of spheres and aggregate states compared with plasmon induced transparency. A hybridization mechanism between magnetic and electric modes is proposed to pursue the physical origin, which is crucial to build all-dielectric metamaterials. Remarkably, magnetic induced transparency effect exhibiting near-zero reflection and near-perfect transmission causes light to propagate with no extra phase change. This makes silicon nanosphere oligomers promising as a unit cell in epsilon-near-zero metamaterials. A weak and narrow electric dipole has limited the use of silicon nanospheres in nanophotonic applications requiring strong interaction between electric and magnetic modes. Here, Yan et al. demonstrate effective coupling between the magnetic resonance and the electric gap mode in nearly touching silicon nanospheres.
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Affiliation(s)
- J H Yan
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics &Engineering, Sun Yat-sen University, Guangdong 510275, , China
| | - P Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics &Engineering, Sun Yat-sen University, Guangdong 510275, , China
| | - Z Y Lin
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics &Engineering, Sun Yat-sen University, Guangdong 510275, , China
| | - H Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics &Engineering, Sun Yat-sen University, Guangdong 510275, , China
| | - H J Chen
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics &Engineering, Sun Yat-sen University, Guangdong 510275, , China
| | - C X Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics &Engineering, Sun Yat-sen University, Guangdong 510275, , China
| | - G W Yang
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics &Engineering, Sun Yat-sen University, Guangdong 510275, , China
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15
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Lin ZY, Que YX, Deng ZH, Xu SQ, Rao GP, Zhang MQ. First Report of Phoma sp. Causing Twisting and Curling of Crown Leaves of Sugarcane in Mainland of China. Plant Dis 2014; 98:850. [PMID: 30708676 DOI: 10.1094/pdis-10-13-1061-pdn] [Citation(s) in RCA: 6] [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: 06/09/2023]
Abstract
Sugarcane is a major sugar and the leading energy crop worldwide and Guangxi is the largest sugarcane production area in China (2011 Sugar Annual China, www.gain.fas.usda.gov). During survey of sugarcane crops in September 2012 and June 2013, ~5 to 10% of sugarcane (cvs. FN-40 and ROC22) planted in Chongzuo and Laibing, Guangxi Zhuang Autonomous Region, P. R. China, had twisted and curling symptoms of crown leaves similar to sugarcane Pokkah boeng disease (caused by Fusarium moniliforme Sheldon). The symptoms started appearing as yellowing on midribs and leaf margins that spread further to the entire leaf, along with twisting and curling of crown leaves. The symptomatic leaf tissues (5 × 5 mm) were surface-sterilized by 0.1% HgCl2 solution for 30 s, followed by rinsing three times in sterile water, placed on potato dextrose agar (PDA), and then incubated in darkness at 28°C. After 3 days of incubation, the isolated fungal colony appeared as white villous, spherical, radial, and dense colorless mycelium from the top, while it was reddish-brown at the bottom and later became grayish. Chlamydospores were also observed with a diameter of 5 to 10 μm and were dark brown, unicellular, intercalary, and smooth. The binucleate hyphae were colorless and transparent. Pycnidia appeared on the colonies after 20 days, and were dark brown, subglobose, and 150 to 230 μm in diameter, and the conidia were ~3 to 7 × 2.5 to 6 μm, unicellular, colorless, and ovoid to oval. The fungal isolates from the symptomatic leaves were obtained and pathogenicity was evaluated. Conidial suspensions (107 CFU/ml) of the single isolate from FN-40 were micro-injected into 20 sugarcane seedlings of cultivar FN-40. Another 20 seedlings were injected with water without conidia as control. The inoculated plants were grown in a growth chamber at 28°C with a 16-h photoperiod. Twisted and curly symptoms similar to the field appeared on the inoculated leaves at 10 days after inoculation, while the control leaves remained asymptomatic. The fungus was re-isolated and identified. Genomic DNA from the cultured fungal isolate was extracted with a modified Fungal DNA Midi Kit (Omega Bio-Tek, Inc., Norcross, GA), and amplified using fungus-conserved primer sequences (ITS1: 5'-TCCGTAGGTGAACCTGCGG-3' and ITS4: 5'-TCCTCCGCTTATTGATATGC-3'). The consensus rDNA-internal transcribed spacer sequence (GenBank Accession No. KC524502) was 100% identical with 97% coverage to the ITS sequence from Phoma sp. 3. TMS-2011 (HQ631000.1) in GenBank (3). The fungus Phoma sp. was identified on the basis of morphological characteristics (2,4) and the ITS sequence of rDNA (1,3). Disease caused by Phoma sp. has been reported earlier on sugarcane from Pakistan, Hawaii, and Taiwan, causing leaf blight and curling (2,4). However, to the best of our knowledge, this is the first report of Phoma sp. causing twisting and curling of crown leaves of sugarcane in mainland of China. References: (1) M. M. Aveskamp et al. Stud. Mycol. 65:1, 2010. (2) A. Sanguino and H. Tokeski. ISSCT Proc. 17:1555, 1980. (3) P. Shrestha et al. Appl. Environ. Microbiol. 77:5490, 2011. (4) Z. N. Wang. Rep. Taiwan Sugar Res. Inst. 129:1, 1980.
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Affiliation(s)
- Z Y Lin
- Guangxi University, Nanning, Guangxi 530004, China, and Fujian Agricultural and Forestry University, Fuzhou 350002, China
| | - Y X Que
- Fujian Agricultural and Forestry University, Fuzhou 350002, China
| | - Z H Deng
- Fujian Agricultural and Forestry University, Fuzhou 350002, China
| | - S Q Xu
- Guangxi University, Nanning, Guangxi 530004, China
| | - G P Rao
- Div. Plant Pathology, Indian Agricultural Research Institute, Pusa Campus, New Delhi 110012, India
| | - M Q Zhang
- Guangxi University, Nanning, Guangxi 530004, China, and Fujian Agricultural and Forestry University, Fuzhou 350002, China
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16
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Abstract
BACKGROUND Amphotericin B (AmB) has a discordant influence on epirubicin (4'-epidoxorubicin) cytotoxicity in hepatocellular carcinoma (HCC). This indicates that the cellular function of HCC may be significantly influenced by AmB. Whether the influence of AmB on HCC has any possibility to influence cancer growth has not been studied. This study was to try and clarify this issue. MATERIALS AND METHODS Two HCC cell lines including one without augmentation of the epirubicin cytotoxicity by AmB (cell line A; HCC24/KMUH) and one with this effect (cell line B; HCC38/KMUH) were studied by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and whole human genome microarray (experimental group: 2.5 microg mL(-1) AmB). RESULTS Differential expressions of genes induced by AmB in two cell lines had no influence on cell proliferation as determined by MTT assay. Only cell line B showed up-regulation of genes related to oxidative stress, acute phase reaction, cytokine-cytokine receptor interaction and complement and coagulation cascades. Among the chemokine genes up-regulated by AmB, five genes (CCL2, CXCL1, CXCL5, CXCL6, IL8) were angiogenic. Cell line B also showed up-regulation of one angiogenic C10orf10 gene and down-regulation of one angiostatic chemokine gene (CXCL10). Up- or down-regulation of other genes in cell line A and B did not show any evidence to promote angiogenesis. CONCLUSION AmB has the capacity to concomitantly up-regulate angiogenic genes in HCC cells susceptible to AmB-induced oxidative stress.
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Affiliation(s)
- Z Y Lin
- Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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17
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Tsai JF, Jeng JE, Chuang LY, You HL, Wang LY, Hsieh MY, Chen SC, Chuang WL, Lin ZY, Yu ML, Dai CY. Serum insulin-like growth factor-II as a serologic marker of small hepatocellular carcinoma. Scand J Gastroenterol 2005; 40:68-75. [PMID: 15841717 DOI: 10.1080/00365520410009311] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [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] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Alpha-fetoprotein (AFP) is not a useful tumor marker for diagnosis of small hepatocellular carcinoma (HCC). There is over-expression of insulin-like growth factor (IGF)-II in HCC tissue. This study investigates the diagnostic application of IGF-II in small HCC. MATERIAL AND METHODS Serum levels of IGF-II and AFP were determined in 41 patients with small cirrhotic HCC (< or = 3 cm), 41 sex- and age-matched patients with cirrhosis alone (LC), and 41 healthy adults. The optimal cut-off values for diagnosing HCC were determined with receiver operating characteristics (ROC) curve. RESULTS Both IGF-II and AFP levels in HCC were higher than those in LC patients or controls (each p = 0.0001). The IGF-II levels in LC patients were lower than those in controls (p = 0.001). In HCC patients, multivariate analysis indicated that that both IGF-II (odds ratio, 4.54; 95% confidence interval, 2.15-9.55; p = 0.0001) and AFP (odds ratio, 1.05; 95% confidence interval, 1.01-1.08; p = 0.003) were found to be associated with an increased risk of presence of HCC. The optimal cut-off values of IGF-II (4.1 mg/g prealbumin) and AFP (50 ng/ml) were determined with ROC curves. The sensitivity, specificity, and diagnostic accuracy values for IGF-II were 63%, 90%, and 70%, respectively. Those for AFP were 44%, 95%, and 70%, respectively. Determination of both markers in parallel significantly increase the diagnostic accuracy (88%) and sensitivity (80%), with a high specificity (90%). CONCLUSIONS Serum IGF-II level can be used as an independent serologic marker or a complementary tumor marker to AFP for diagnosis of small HCC.
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Affiliation(s)
- J F Tsai
- Department of Internal Medicine, Kaohsiung Medical University College of Medicine, Taiwan.
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18
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Tsai JF, Jeng JE, Chuang LY, You HL, Ho MS, Lai CS, Wang LY, Hsieh MY, Chen SC, Chuang WL, Lin ZY, Yu ML, Dai CY. Serum insulin-like growth factor-II and alpha-fetoprotein as tumor markers of hepatocellular carcinoma. Tumour Biol 2004; 24:291-8. [PMID: 15004489 DOI: 10.1159/000076461] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2003] [Accepted: 12/02/2003] [Indexed: 01/05/2023] Open
Abstract
To evaluate the diagnostic application of serum insulin-like growth factor-II (IGF-II) and alpha-fetoprotein (AFP) levels in hepatocellular carcinoma (HCC), IGF-II and AFP were determined in 100 cirrhotic patients with HCC, 100 sex- and age-matched patients with cirrhosis alone and 50 healthy controls. The results indicated that IGF-II and AFP levels in patients with HCC were higher than in those with cirrhosis alone (p = 0.0001). There is an inverse correlation between IGF-II and (log)AFP (r = -0.410, p = 0.0001) in patients with HCC. Multivariate analysis indicated that IGF-II and AFP were closely associated, in a dose-related fashion, with the presence of HCC. Receiver operating characteristic curves were used to determine the optimal cutoff values of IGF-II (4.5 mg/g prealbumin) and AFP (100 ng/ml), respectively. Both IGF-II and AFP show a high specificity and positive likelihood ratio. The sensitivity was 42.0% for IGF-II and 73.0% for AFP. Determination of both markers in parallel significantly increased the diagnostic accuracy (96.5%) and sensitivity (97.9%), with a high specificity (95.1%) and positive likelihood ratio (19.9). In conclusion, IGF-II and AFP may be used as complementary tumor markers to discriminate HCC from cirrhosis.
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Affiliation(s)
- J F Tsai
- Department of Internal Medicine, Kaohsiung Medical University College of Medicine, Kaohsiung, Taiwan, ROC.
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19
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Abstract
The imaging findings of multiple splenic inflammatory pseudotumors in a 45-year-old male are described. Peripheral ring enhancement on arterioportal phase and gradual enhancement from the periphery to the center on venous delay phase on contrast-enhanced dynamic magnetic resonance imaging were compatible with the pathologic findings. This result may aid in the preoperative diagnosis of these benign lesions.
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Affiliation(s)
- W C Wu
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, No. 100 Shih-Chuan 1st Road, Kaohsiung 807, Taiwan, Republic of China
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20
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Lin ZY, Wang LY, Yu ML, Dai CY, Chen SC, Chuang WL, Hsieh MY, Tsai JF, Chang WY. Influence of age on intrarenal resistive index measurement in normal subjects. Abdom Imaging 2003; 28:230-2. [PMID: 12592470 DOI: 10.1007/s00261-002-0024-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND We investigated the influence of age on intrarenal arterial resistive index (RI) measurement in 135 normal subjects (71 male, 64 female; age range = 17-68 years, median age = 37 years). METHODS Each subject underwent color Doppler measurement of the intrarenal RI from three distinct interlobar arteries in the superior, middle, and inferior parts of both kidneys. The mean of six RI values obtained from both kidneys was used for analysis. The correlation of RI with different variables was investigated by linear regression and stepwise multiple linear regression. Variables analyzed were age, systolic blood pressure, diastolic blood pressure, mean blood pressure, pulse pressure, and pulse rate. RESULTS The results of linear regression showed that age had a significantly positive correlation ( r = 0.276, p = 0.0012) and diastolic blood pressure had a significantly negative correlation ( r = -0.186, p = 0.0311) with the RI. The results of stepwise multiple linear regression showed that the combination of age and diastolic blood pressure could explain approximately 15% of the RI changes ( r(2) = 0.1535). CONCLUSION Although there is a statistically significant positive correlation between intrarenal RI and age, the correlation is weak. This suggests that the influence of age on RI measurement is small and may be of no clinical importance.
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Affiliation(s)
- Z Y Lin
- Department of Internal Medicine, Kaohsiung Medical University Hospital, No.100 Shih-Chuan 1st Road, Kaohsiung 807, Taiwan, Republic of China
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21
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Dai CY, Yu ML, Chang WY, Tseng CH, Hou C, Lin ZY, Chen SC, Hsieh MY, Wang LY, Tsai JF, Chuang WL. The prevalence of TT virus and GB virus C/hepatitis G virus infection in individuals with raised liver enzymes but without HBV or HCV infection in Taiwan. Epidemiol Infect 2002; 129:307-13. [PMID: 12403107 PMCID: PMC2869890 DOI: 10.1017/s0950268802007264] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The prevalence of TT virus (TTV) and GB virus-C/hepatitis G virus (GBV-C/HGV) infection and the association with raised liver function tests in 546 Taiwanese with negative HBsAg, anti-HCV and HCV RNA was elucidated. They were tested for serum alanine aminotransferase (ALT), GBV-C/HGV RNA, anti-envelope protein 2 antibody (anti-E2) and TTV DNA. Direct sequencing and phylogenetic analyses were performed on 58 isolates for TTV genotype determination. The prevalence of TTV DNA, GBV-C/HGV RNA, anti-E2 and over all GBV-C/HGV exposure was 24.9, 3.4, 8.2 and 11.1%, respectively. Using uni- and multi-variate analyses, male gender and TTV viremia were associated significantly with raised ALT values. Sixty-nine percent of TTV isolates were deduced to be TTV genotype 1 and they had significantly lower mean age than genotype non-1 isolates. In the population, raised ALT may be related to male gender and be attributable to TTV infection but not to GBV-C/HGV among individuals with no evidence of current HBV and HCV infection. TTV genotype 1 is the most prevalent genotype and associated with younger age.
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MESH Headings
- Adult
- Aged
- Alanine Transaminase/blood
- Antigens, Viral/blood
- DNA Virus Infections/blood
- DNA Virus Infections/epidemiology
- DNA Virus Infections/virology
- DNA, Viral/blood
- Enzyme-Linked Immunosorbent Assay
- Female
- Flaviviridae Infections/blood
- Flaviviridae Infections/epidemiology
- Flaviviridae Infections/virology
- GB virus C/isolation & purification
- Hepacivirus/isolation & purification
- Hepatitis B Surface Antigens/blood
- Hepatitis, Chronic/blood
- Hepatitis, Chronic/epidemiology
- Hepatitis, Chronic/virology
- Hepatitis, Viral, Human/blood
- Hepatitis, Viral, Human/epidemiology
- Hepatitis, Viral, Human/virology
- Humans
- Male
- Middle Aged
- Prevalence
- RNA, Viral/blood
- Retrospective Studies
- Reverse Transcriptase Polymerase Chain Reaction
- Sex Factors
- Taiwan/epidemiology
- Torque teno virus/genetics
- Torque teno virus/isolation & purification
- Viral Envelope Proteins/blood
- Viral Envelope Proteins/immunology
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Affiliation(s)
- C Y Dai
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan
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22
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Yu ML, Chuang WL, Dai CY, Chen SC, Lin ZY, Hsieh MY, Tsai JF, Wang LY, Chang WY. GB virus C/hepatitis G virus infection in chronic hepatitis C patients with and without interferon-alpha therapy. Antiviral Res 2001; 52:241-9. [PMID: 11675141 DOI: 10.1016/s0166-3542(01)00165-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
GB virus C/hepatitis G virus (GBV-C/HGV) RNA, detected by polymerase chain reaction, and antibodies to the GBV-C/HGV envelope protein (anti-E2), detected by an enzyme-linked immunosorbent assay, were used to evaluate both the impact of GBV-C/HGV on the coexistent hepatitis C virus (HCV) infection and the course of GBV-C/HGV infection in chronic hepatitis C patients with and without interferon-alpha (IFN-alpha) treatment. Of the 162 chronic hepatitis C patients treated with INF-alpha, 17.9% were GBV-C/HGV RNA-positive and 18.5% anti-E2-positive (total exposure, 35.2%). Neither present nor past GBV-C/HGV infection had impact on the clinical features, HCV virological characteristics and response to IFN-alpha treatment in chronic hepatitis C patients. Among patients with ongoing HCV/GBV-C/HGV coinfection, 20.7% (6/29) in IFN-alpha-treated patients lost GBV-C/HGV RNA concomitant with anti-E2 seropositivity, which was significantly higher than 4.8% (2/42) in patients without INF-alpha treatment (P<0.05). Based on multivariate analyses, the significant factors associated with clearance of GBV-C/HGV viremia combined with anti-E2 seropositivity were baseline anti-E2 seropositivity and IFN-alpha treatment. In summary, GBV-C/HGV did not alter the course of coexistent HCV. IFN-alpha treatment was effective in some patients against GBV-C/HGV and might facilitate anti-E2 seroconversion in chronic hepatitis C patients with GBV-C/HGV viremia.
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MESH Headings
- Adolescent
- Adult
- Aged
- Enzyme-Linked Immunosorbent Assay
- Female
- Flaviviridae Infections/complications
- Flaviviridae Infections/drug therapy
- Flaviviridae Infections/immunology
- Flaviviridae Infections/virology
- GB virus C/drug effects
- GB virus C/immunology
- GB virus C/physiology
- Hepatitis Antibodies/analysis
- Hepatitis Antibodies/immunology
- Hepatitis C, Chronic/complications
- Hepatitis C, Chronic/drug therapy
- Hepatitis C, Chronic/immunology
- Hepatitis C, Chronic/virology
- Hepatitis, Viral, Human/complications
- Hepatitis, Viral, Human/drug therapy
- Hepatitis, Viral, Human/immunology
- Hepatitis, Viral, Human/virology
- Humans
- Interferon-alpha/pharmacology
- Interferon-alpha/therapeutic use
- Male
- Middle Aged
- RNA, Viral/blood
- Retrospective Studies
- Taiwan
- Viremia/drug therapy
- Viremia/immunology
- Viremia/virology
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Affiliation(s)
- M L Yu
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University, No. 100, Shih-Chuan 1st Road, Kaohsiung 807, Taiwan, ROC
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23
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Yuan P, Wu DQ, Lin ZY, Diao GY, Peng JL, Wei JF. [Study on the surface hydroxyl species of diatomite using DRIFT spectroscopy]. Guang Pu Xue Yu Guang Pu Fen Xi 2001; 21:783-786. [PMID: 12958894] [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: 05/24/2023]
Abstract
Using DRIFT spectroscopy, we detected surface hydroxyl structure of diatomite in this study. There were either isolated hydroxyl groups or H-bonded hydroxyl groups on the surface of the diatomite. At room temperature, the diatomite surface was predominantly covered by weakly adsorbed water in cavity and water bonded to surface hydroxyl groups via H-bonds. There appeared a broad band with middle wavenumber at 3,400-3,500 cm-1 as a result in the corresponding DRIFT spectra. With driving off adsorbed water by heating the sample from 200 degrees C to 1000 degrees C, the broad band fade away gradually, and a single band at about 3,745 cm-1, which is attributed to both isolated hydroxyl groups and partial H-bonded hydroxyl groups, became more and more intense with increasing temperature. Under the heat treatment conditions of 1,100 degrees C for one hour, the isolated hydroxyl groups were mostly desorbed from the surface, and the H-bonded hydroxyl groups that existed above the inner wall of micropores with diameter of circa 10 nm, however, had not yet condensed thoroughly. The thermal behavior was supposed to be a speciality of diatomite.
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Affiliation(s)
- P Yuan
- Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
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24
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Yu ML, Chuang WL, Chen SC, Dai CY, Hou C, Wang JH, Lu SN, Huang JF, Lin ZY, Hsieh MY, Tsai JF, Wang LY, Chang WY. Changing prevalence of hepatitis C virus genotypes: molecular epidemiology and clinical implications in the hepatitis C virus hyperendemic areas and a tertiary referral center in Taiwan. J Med Virol 2001. [PMID: 11505444 DOI: 10.1002/jmv.2001] [Citation(s) in RCA: 73] [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] [Indexed: 01/03/2023]
Abstract
To determine the hepatitis C virus (HCV) genotype distribution in Taiwan and to clarify the relationship between genotype and the pathogenesis of HCV infection, 1,164 subjects positive for serum HCV antibodies and HCV RNA from three HCV hyperendemic areas (Masago, Tzukuan, and Taoyuan) and a tertiary referral center in Taiwan were studied during 1995-1997. HCV genotypes and viral loads were determined using Okamoto's method and branched DNA assay, respectively. Genotype 1b was the most prevalent in Tzukuan (61.9%), Taoyuan (76.9%), and the referral center (47.0%). By contrast, genotype 2a was the major HCV type in Masago (63.5%). Prevalence of genotype 1b positively and that of genotype 2a negatively correlated to age, regardless of study populations (P < 0.01). Based on multivariate analysis, the significant factors associated with the presence of cirrhosis, with or without hepatocellular carcinoma, in chronic hepatitis C patients were genotype 1b and age. In conclusion, these results underline that independent HCV outbreaks continue in HCV hyperendemic areas in Taiwan, concomitant with a changing relative prevalence of HCV genotypes in relation to age. Both the correlation of genotype 1b with age (cohort effect) and intrinsic properties of HCV genotypes are probably responsible for the association between genotype and the pathogenesis of HCV infection.
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Affiliation(s)
- M L Yu
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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25
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Tang ZY, Sun FX, Tian J, Ye SL, Liu YK, Liu KD, Xue Q, Chen J, Xia JL, Qin LX, Sun SL, Wang L, Zhou J, Li Y, Ma ZC, Zhou XD, Wu ZQ, Lin ZY, Yang BH. Metastatic human hepatocellular carcinoma models in nude mice and cell line with metastatic potential. World J Gastroenterol 2001; 7:597-601. [PMID: 11819839 PMCID: PMC4695559 DOI: 10.3748/wjg.v7.i5.597] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Metastatic human HCC model is needed for the studies on mechanism and interven tion of metastatic recurrence. By using orthotopic implantation of histologically intact tissues of 30 surgical specimens, a patient-like metastatic model of hu man HCC in nude mice (LCI-D20) and a low metastatic model of human HCC in nude mice (LCI-D35) have been established. All mice with transplanted LCI-D20 tumors exhibited extremely high metastatic ability including spontaneous metasta sis to liver, lungs, lymph nodes and peritoneal seeding. Remarkable difference was also found in expression of some of the invasiveness related genes and growth factors between the LCI-D20 and LCI-D35 tumors. PAI-1 increased gradually following tumor progression in LCI-D20 model, and correlated with tumor size and AFP level. Phasic expression of tissue intercellular adhesio nmolecule-1 in this model was also observed. Using corneal micropocket model, it was demonstrated that the vascular response induced by LCI-D20 tumor was stronger than that induced by LCI-D35 tumor. Similar report on metastatic human HCC model in nude mice and human HCC cell line with metastatic potential was rarely found in the literature. This LCI-D20 model has been widely used for the studies on intervention of metastasis, including anti-angiogenesis, antisense approach, metallopro teinase inhibitor, differentiation inducer, etc. It is concluded that the establ ishment of metastatic human HCC model in nude mice and human HCC cell line with metastatic potential will provide important models for the in vivo and in vitro study of HCC invasiveness, angiogenesis as well as intervention of HCC recurrence.
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Affiliation(s)
- Z Y Tang
- Liver Cancer Institute of Fudan University (previous Liver Cancer Institute of Shanghai Medical University)136 Yixueyuan Road, Zhongshan Hospital, Shanghai 200032,China.
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26
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Chen SH, Sung WC, Lee GB, Lin ZY, Chen PW, Liao PC. A disposable poly(methylmethacrylate)-based microfluidic module for protein identification by nanoelectrospray ionization-tandem mass spectrometry. Electrophoresis 2001; 22:3972-7. [PMID: 11700728 DOI: 10.1002/1522-2683(200110)22:18<3972::aid-elps3972>3.0.co;2-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The design, fabrication, and analytical use of a poly(methylmethacrylate) (PMMA)-based microfluidic module for nanoelectrospray ionization-tandem mass spectrometry (nano-ESI-MS/MS) were described. The microfluidic module can be mass-produced at low costs and used as a disposable device to generate nano-ESI-MS/MS signals for protein identification from low amounts of protein samples. Compared with commercially available nanospray capillary tips, the module gave comparable signal quality and also offered advantages in convenience and easiness of operation, permitting repeated usage, and disposability.
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Affiliation(s)
- S H Chen
- Department of Chemistry, College of Medicine, National Cheng Kung University, Tainan, Taiwan, ROC
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27
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Qin LX, Tang ZY, Ye SL, Liu YK, Ma ZC, Zhou XD, Wu ZQ, Lin ZY, Sun FX, Tian J, Guan XY, Pack SD, Zhuang ZP. Chromosome 8p deletion is associated with metastasis of human hepatocellular carcinoma when high and low metastatic models are compared. J Cancer Res Clin Oncol 2001; 127:482-8. [PMID: 11501747 DOI: 10.1007/s004320100236] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Recently, we found that chromosome 8p deletion might be associated with hepatocellular carcinoma (HCC) metastasis by analyzing the differences in chromosomal alterations between primary tumors and their matched metastatic lesions of HCC with comparative genomic hybridization (CGH) (Qin et al. 1999). To further confirm this interesting finding, the genomic changes of two models bearing human HCC with different metastatic potentials (LCI-D20 and LCI-D35), and the new human HCC cell line with high metastatic potential (MHCC97) were analyzed by CGH. Gains on 1q, 6q, 7p, and 8q, and losses on 13p, 14p, 19p, 21, and 22 were detected in both LCI-D20 and LCI-D35 models. However, high copy number amplification of a minimum region at 1q12-q22 and 12q, and deletions on 1p32-pter, 3p21-pter, 8p, 9p, 10q, 14q, and 15p were detected only in the LCI-D20 model. Gains on 1p21-p32, 2p13-p21, 6p12-pter, 9p, 15q, and 16q11-q21, and losses on 2p23-pter, 4q24-qter, 7q31-qter, 12q, 17p, and 18 were detected only in the LCI-D35 model. The chromosomal aberration patterns in the MHCC97 cell line were similar to its parent LCI-D20 model, except that gains on 19q and losses on 4, 5, 10q, and 13q were found only in the cell line. These results provide some indirect clues to the metastasis-related chromosomal aberrations of HCC and further support the finding that 8p deletion is associated with HCC metastasis. 1q12-22 and 12q might harbor a novel oncogene(s) that contributes to the development and progression of HCC. Amplification on 8q and deletions on 4q and 17p may be not necessary for HCC metastasis.
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MESH Headings
- Animals
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/secondary
- Chromosome Deletion
- Chromosomes, Human, Pair 1/genetics
- Chromosomes, Human, Pair 17/genetics
- Chromosomes, Human, Pair 6/genetics
- Chromosomes, Human, Pair 8/genetics
- Disease Models, Animal
- Humans
- In Situ Hybridization, Fluorescence
- Interphase
- Liver Neoplasms/genetics
- Liver Neoplasms/pathology
- Mice
- Mice, Nude
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Affiliation(s)
- L X Qin
- Liver Cancer Institute and Zhongshan Hospital, Medical Center of Fudan University, Shanghai, China
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Lin FS, Chen SC, Lin ZY, Hsieh MY, Wang LY, Chuang WL, Chang WY. Ultrasonic characteristics of periportal collateral circulation in hepatocellular carcinoma with portal vein invasion. Kaohsiung J Med Sci 2001; 17:401-7. [PMID: 11715839] [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: 02/22/2023] Open
Abstract
Real-time ultrasound (US) was used to analyze the morphological characteristics of periportal collateral circulation (PPCC) and the hepatic artery in hepatocellular carcinoma (HCC) patients with portal vein invasion (PVI). During a 5-year interval, a total of 17 HCC patients with main portal vein thrombosis and detectable periportal vessels were collected: 14 men and 3 women, aged 27 to 76 years old. We examined these patients' periportal vessels by real-time US, then differentiated PPCC from hepatic artery by duplex Doppler US. We analyzed the morphological appearances of real-time US imaging of PPCC and the hepatic artery. Our results showed that the PPCC was always torturously worm-like in appearance on real-time US, and the hepatic artery usually had a linear channel appearance on real-time US. When these two kinds of vessels were seen simultaneously along the pathway of a thrombosed portal vein, the inner vessel was always the hepatic artery with linear channel structure, and the outer vessel was always PPCC with a torturously worm-like structure. In conclusion, real-time US is a useful and reliable modality in detecting periportal vessels and differentiating PPCC from the hepatic artery.
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Affiliation(s)
- F S Lin
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, No. 100, Shih-Chuan 1st Road, Kaohsiung City, 807 Taiwan
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29
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Mou LY, Lin ZY, Zhu LY, Liang XT. [Synthesis and vasodilative activities of alpha-phenylcinnamide]. Yao Xue Xue Bao 2001; 36:502-6. [PMID: 12585080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
AIM To search for compounds having strong vasodilating effect. METHODS AND RESULTS The mixed anhydride and alpha-phenylcinnamyl halide were used. Twenty-two alpha-phenylcinnamide derivatives were synthesized. The strutures were elucidated on the basis of MS and 1HNMR. Compounds 1-22 are new compounds. CONCLUSION Vasodilative activity assays were conducted for the target compounds and the results indicated that several compounds (3, 9 and 11) demonstrated superior pharmacological profiles to the lead compound, among which compound 11 was further evaluated and found to be indicative of potential KCO activity. Preliminary SAR of alpha-phenylcinnamides was discussed herein.
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Affiliation(s)
- L Y Mou
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
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30
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Abstract
AIM: To demonstrate the relationship between H-ras oncogene and hepatocellular carcinoma (HCC) metastasis.
METHODS: Activated H-ras oncogene was transfected into SMMC 7721, a cell line derived from human HCC, by calcium phosphate transfection method. Some metastasis-related parameters were detected in vitro, including adhesion assay, migration assay, expression of collagenase IV (cIVase) and epidermal growth factor receptor (EGFR).
RESULTS: The abilities of H-ras-transfected cell clones in adhesion to laminin (LN) or fibronectin (FN), migration, cIVase secretion increased markedly, and the expression of EGFR elevated moderately. More importantly, these alterations were consistent positively with the expression of p21, the protein product of H-ras oncogene.
CONCLUSION: H-ras oncogene could induce the metastatic phenotype of HCC cell in vitro to raise its metastatic potential.
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Affiliation(s)
- Q Wang
- Department of Microbiology, Medical Center of Fudan University, Shanghai 200032, China.
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31
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Dai CY, Yu ML, Chuang WL, Lin ZY, Chen SC, Hsieh MY, Wang LY, Tsai JF, Chang WY. Influence of hepatitis C virus on the profiles of patients with chronic hepatitis B virus infection. J Gastroenterol Hepatol 2001; 16:636-40. [PMID: 11422616 DOI: 10.1046/j.1440-1746.2001.02494.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Hepatitis B virus (HBV) and hepatitis C virus (HCV) are the most common causes of chronic liver disease, cirrhosis and hepatocellular carcinoma. The influence of HCV infection on the clinicopathological and virological profiles of chronic HBV infection was investigated. METHODS A total of 100 chronic HBV carriers with histopathological diagnoses by liver biopsy were studied. Hepatitis B e antigen (HBeAg) and anti-HCV antibody were tested. Serum HCV-RNA was detected by using a nested reverse transcription-PCR assay. A branched DNA (bDNA) assay was used to detect HBV-DNA and quantitate the serum levels. RESULTS Eighteen (18%) of 100 patients were positive for anti-HCV and HCV-RNA. Patients with concurrent HCV and HBV infection were significantly older than those without HCV infection (P < 0.05). The positive rates of HBeAg and HBV-DNA as well as the serum levels of HBV-DNA in patients with concurrent HCV and HBV infection were significantly lower than those without concurrent HCV and HBV infection (P < 0.01, P < 0.05, and P < 0.001, respectively). By using multivariate analysis, the factors of seroconversion of HBeAg and decreasing level of HBV-DNA were significantly correlated to concurrent HCV and HBV infection in chronic HBV carriers. The factors of increasing age and concurrent HCV and HBV infection were significantly correlated to seroconversion of HBeAg. CONCLUSIONS The concurrent HCV and HBV infection in chronic HBV carriers might result in a suppression of HBV replication that presented with a lower level of serum HBV-DNA and HBeAg seroconversion. Nevertheless, neither more obvious increase in biochemical parameters nor histopathological progression to more advanced liver diseases was observed.
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Affiliation(s)
- C Y Dai
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, Republic of China
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32
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Tsai JF, Chuang LY, Jeng JE, Ho MS, Lin ZY, Hsieh MY, Wang LY, Tsai JH. Sex differences in relation to serum hepatitis B e antigen and alanine aminotransferase levels among asymptomatic hepatitis B surface antigen carriers. J Gastroenterol 2001; 35:690-5. [PMID: 11023040 DOI: 10.1007/s005350070048] [Citation(s) in RCA: 9] [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] [Indexed: 02/04/2023]
Abstract
This study aimed to investigate sex differences in relation to hepatitis B e antigen (HBeAg) and serum alanine aminotransferase (ALT) levels in chronic asymptomatic hepatitis B virus (HBV) infection. HBeAg and ALT level were determined in 636 asymptomatic hepatitis B surface antigen carriers. There was no significant sex differences in the age-adjusted prevalence of HBeAg. Abnormal ALT level (>45 IU/l) was more frequent in carriers with HBeAg (17.5% vs 7.6%; P = 0.001). Multivariate analysis indicated that male sex (odds ratio, 2.0; 95% confidence interval, 1.1-3.6) and HBeAg (odds ratio, 2.6; 95% confidence interval, 1.6-4.3) were independent risk factors for abnormal ALT levels. Male sex and HBeAg-positivity are independent risk factors for abnormal ALT activity in chronic HBV infection. This observation may be related to sex differences in chronic HBV infection.
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Affiliation(s)
- J F Tsai
- Department of Internal Medicine, Kaohsiung Medical University College of Medicine, Taiwan
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33
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Abstract
BACKGROUND Recently, the implementation of screening programs using alpha-fetoprotein (AFP) and ultrasonography in high risk populations has identified increasing numbers of patients with small hepatocellular carcinoma (small HCC). The aim of this study was to summarize the authors' experience in patients who underwent hepatectomy for small HCC and the factors that influence or improve long term survival. METHODS The study included 1000 patients who underwent hepatectomy for small HCC (< or = 5 cm) and compared them with 1366 patients who underwent hepatectomy for large HCC (> 5 cm) during the same period. A Cox proportional-hazards model was used for multivariate analysis of prognostic factors. RESULTS Comparison between patients with small HCC (n = 1000 patients) and patients with large HCC (n = 1366 patients) revealed that those with small HCC had a higher resection rate (93.6% [1000 of 1068 patients] vs. 55.7% [1366 of 2451 patients]; P < 0.01), a higher curative resection rate (80.5% [805 of 1000 patients] vs. 60.7% [829 of 1366 patients]; P < 0.01), a lower operative mortality rate (1.5% [15 of 1000 patients] vs. 3.7% [50 of 1366 patients]; P < 0.01), better differentiation of tumor cells (Edmondson Grade 3-4; 14.9% vs. 20.1%; P < 0.01), a higher incidence of single nodule tumors (82.6% vs. 64.4%; P < 0.01), a higher proportion of well encapsulated tumors (73.3% vs. 46.3%; P < 0.01), a lower incidence of tumor emboli in the portal vein (4.9% vs. 20.8%; P < 0.01), and higher survival rates after undergoing resection (5 years: 62.7% vs. 37.1%; P < 0.01; 10 years: 46.3% vs. 29.2%; P < 0.01). No significant difference was found between survival after undergoing minor resection (n = 949 patients) or lobectomy (n = 51 patients) in patients with small HCC (P > 0.05). Reresection for subclinical recurrence or solitary pulmonary metastasis after small HCC resection was undertaken in 84 patients. CONCLUSIONS Resection is still the modality of first choice for the treatment of patients with small HCC. Minor resection instead of lobectomy was the key to increasing resectability and decreasing operative mortality, and reresection for subclinical recurrence or solitary pulmonary metastasis was important approach to prolonging survival further.
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Affiliation(s)
- X D Zhou
- Liver Cancer Institute, Zhong Shan Hospital, Shanghai Medical University, Shanghai, People's Republic of China.
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34
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Zhou XD, Tang ZY, Yang BH, Lin ZY, Ma ZC, Ye SL, Wu ZQ, Fan J, Qin LX, Zheng BH. Experience of 1000 patients who underwent hepatectomy for small hepatocellular carcinoma. Cancer 2001. [PMID: 11301395 DOI: 10.1002/1097-0142(20010415)91] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Recently, the implementation of screening programs using alpha-fetoprotein (AFP) and ultrasonography in high risk populations has identified increasing numbers of patients with small hepatocellular carcinoma (small HCC). The aim of this study was to summarize the authors' experience in patients who underwent hepatectomy for small HCC and the factors that influence or improve long term survival. METHODS The study included 1000 patients who underwent hepatectomy for small HCC (< or = 5 cm) and compared them with 1366 patients who underwent hepatectomy for large HCC (> 5 cm) during the same period. A Cox proportional-hazards model was used for multivariate analysis of prognostic factors. RESULTS Comparison between patients with small HCC (n = 1000 patients) and patients with large HCC (n = 1366 patients) revealed that those with small HCC had a higher resection rate (93.6% [1000 of 1068 patients] vs. 55.7% [1366 of 2451 patients]; P < 0.01), a higher curative resection rate (80.5% [805 of 1000 patients] vs. 60.7% [829 of 1366 patients]; P < 0.01), a lower operative mortality rate (1.5% [15 of 1000 patients] vs. 3.7% [50 of 1366 patients]; P < 0.01), better differentiation of tumor cells (Edmondson Grade 3-4; 14.9% vs. 20.1%; P < 0.01), a higher incidence of single nodule tumors (82.6% vs. 64.4%; P < 0.01), a higher proportion of well encapsulated tumors (73.3% vs. 46.3%; P < 0.01), a lower incidence of tumor emboli in the portal vein (4.9% vs. 20.8%; P < 0.01), and higher survival rates after undergoing resection (5 years: 62.7% vs. 37.1%; P < 0.01; 10 years: 46.3% vs. 29.2%; P < 0.01). No significant difference was found between survival after undergoing minor resection (n = 949 patients) or lobectomy (n = 51 patients) in patients with small HCC (P > 0.05). Reresection for subclinical recurrence or solitary pulmonary metastasis after small HCC resection was undertaken in 84 patients. CONCLUSIONS Resection is still the modality of first choice for the treatment of patients with small HCC. Minor resection instead of lobectomy was the key to increasing resectability and decreasing operative mortality, and reresection for subclinical recurrence or solitary pulmonary metastasis was important approach to prolonging survival further.
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Affiliation(s)
- X D Zhou
- Liver Cancer Institute, Zhong Shan Hospital, Shanghai Medical University, Shanghai, People's Republic of China.
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35
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Abstract
BACKGROUND Recently, the implementation of screening programs using alpha-fetoprotein (AFP) and ultrasonography in high risk populations has identified increasing numbers of patients with small hepatocellular carcinoma (small HCC). The aim of this study was to summarize the authors' experience in patients who underwent hepatectomy for small HCC and the factors that influence or improve long term survival. METHODS The study included 1000 patients who underwent hepatectomy for small HCC (< or = 5 cm) and compared them with 1366 patients who underwent hepatectomy for large HCC (> 5 cm) during the same period. A Cox proportional-hazards model was used for multivariate analysis of prognostic factors. RESULTS Comparison between patients with small HCC (n = 1000 patients) and patients with large HCC (n = 1366 patients) revealed that those with small HCC had a higher resection rate (93.6% [1000 of 1068 patients] vs. 55.7% [1366 of 2451 patients]; P < 0.01), a higher curative resection rate (80.5% [805 of 1000 patients] vs. 60.7% [829 of 1366 patients]; P < 0.01), a lower operative mortality rate (1.5% [15 of 1000 patients] vs. 3.7% [50 of 1366 patients]; P < 0.01), better differentiation of tumor cells (Edmondson Grade 3-4; 14.9% vs. 20.1%; P < 0.01), a higher incidence of single nodule tumors (82.6% vs. 64.4%; P < 0.01), a higher proportion of well encapsulated tumors (73.3% vs. 46.3%; P < 0.01), a lower incidence of tumor emboli in the portal vein (4.9% vs. 20.8%; P < 0.01), and higher survival rates after undergoing resection (5 years: 62.7% vs. 37.1%; P < 0.01; 10 years: 46.3% vs. 29.2%; P < 0.01). No significant difference was found between survival after undergoing minor resection (n = 949 patients) or lobectomy (n = 51 patients) in patients with small HCC (P > 0.05). Reresection for subclinical recurrence or solitary pulmonary metastasis after small HCC resection was undertaken in 84 patients. CONCLUSIONS Resection is still the modality of first choice for the treatment of patients with small HCC. Minor resection instead of lobectomy was the key to increasing resectability and decreasing operative mortality, and reresection for subclinical recurrence or solitary pulmonary metastasis was important approach to prolonging survival further.
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Affiliation(s)
- X D Zhou
- Liver Cancer Institute, Zhong Shan Hospital, Shanghai Medical University, Shanghai, People's Republic of China.
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Abstract
The role of betel quid chewing in the aetiology of hepatocellular carcinoma (HCC) was evaluated in a case-control study including 263 pairs of age- and sex-matched HCC patients and healthy controls. Serum hepatitis B surface antigen (HBsAg), and antibodies to hepatitis C virus (anti-HCV) were determined, and standardized personal interview conducted using a structured questionnaire. Multivariate analysis indicated that betel quid chewing (odds ratio (OR), 3.49; 95% confidence interval (CI), 1.74-6.96), HBsAg (OR, 16.69; 95% CI, 9.92-28.07), anti-HCV (OR, 38.57; 95% CI, 18.15-81.96), and educational duration of less than 10 years (OR, 1.71; 95% CI, 1.05-2.78) are independent risk factors of HCC. In addition, there was an additive interaction between betel quid chewing and chronic infection with either hepatitis B virus (synergy index, 5.37) or hepatitis C virus (synergy index, 1.66). Moreover, risk on HCC increased as duration of betel quid chewing increased, or amount of betel quid consumed (each P for trend < 0.0001).
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Affiliation(s)
- J F Tsai
- Department of Internal Medicine, Kaohsiung Medical University College of Medicine, Taiwan, Republic of China
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Dai CY, Yu ML, Chuang WL, Wang CS, Lin ZY, Chen SC, Hsieh MY, Wang LY, Tsai JF, Chang WY. The molecular epidemiology and clinical significance of TT virus (TTV) infection in healthy blood donors from southern Taiwan. Transfus Apher Sci 2001; 24:9-15. [PMID: 11515617 DOI: 10.1016/s0955-3886(00)00121-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To evaluate the molecular epidemiology and clinical significance of th
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Affiliation(s)
- C Y Dai
- Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan, ROC
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38
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Abstract
Chrysanthemol (1), a trans-eudesmane type sesquiterpene from Chrysanthemum indicum L., possesses certain anti-inflammatory activity. Its total synthesis was approached from two alternative routes and finally accomplished in ten steps from R-(+)-carvone via alpha-eudesmol (10) as the key intermediate. The overall yield is 2.4% and the spectral data of the synthetic target compound were identical with that of natural chrysanthemol (1). Seven intermediary compounds were tested for inhibitory effects on the carragenan-induced swelling of mouse paw but demonstrated no obvious activities.
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Affiliation(s)
- L Y Mou
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing
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Yu ML, Chuang WL, Dai CY, Lu SN, Wang JH, Huang JF, Chen SC, Lin ZY, Hsieh MY, Tsai JF, Wang LY, Chang WY. The serological and molecular epidemiology of GB virus C/hepatitis G virus infection in a hepatitis C and B endemic area. J Infect 2001; 42:61-6. [PMID: 11243756 DOI: 10.1053/jinf.2000.0785] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVES To investigate the serological and molecular characteristics of GB virus C/hepatitis G virus (GBV-C/HGV) infection in the hepatitis C virus (HCV)/hepatitis B virus (HBV)-endemic areas in Taiwan. METHODS Sera from 200 residents from Masago, an HCV/HBV-endemic community in Taiwan, and 400 blood donors were tested for GBV-C/HGV RNA by using nested reverse transcription-polymerase chain reaction and for antibodies to GBV-C/HGV E2-protein (anti-E2) by an enzyme-linked immunosorbent assay. Phylogenetic analysis of GBV-C/HGV was performed. RESULTS The prevalence of GBV-C/HGV viraemia, anti-E2 and GBV-C/HGV exposure among residents of Masago was significantly higher than that among donors (17.0%, 25.5% and 39.5% vs. 3.3%, 7.5% and 10.3%, respectively; all P < 0.0001). In Masago, the prevalence of GBV-C/HGV exposure was significantly higher in residents exposed to HCV than in those without HCV exposure (45.8% vs. 24.1%;P< 0.005). Based on multivariate analyses, HCV viraemia was the only significant factor associated with elevated levels of alanine aminotransferase in Masago. Phylogenetic analysis showed all 34 GBV-C/HGV isolates from Masago clustered within genotype 3. CONCLUSIONS GBV-C/HGV was highly prevalent in Masago, an HCV/HBV-endemic community in Taiwan. HCV viraemia played the most important clinical hepatopathic role in the area. Infections with other hepatitis viruses did not influence the anti-E2 seroconversion from GBV-C/HGV infections.
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Affiliation(s)
- M L Yu
- Hepatobiliary Division, Department of Internal Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Hou C, Chuang WL, Yu ML, Dai CY, Chen SC, Lin ZY, Hsieh MY, Wang LY, Tsai JF, Chang WY. Incidence and associated factors of neutralizing anti-interferon antibodies among chronic hepatitis C patients treated with interferon in Taiwan. Scand J Gastroenterol 2000; 35:1288-93. [PMID: 11199369 DOI: 10.1080/003655200453647] [Citation(s) in RCA: 10] [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] [Indexed: 02/04/2023]
Abstract
BACKGROUND The administration of interferon (IFN) could be complicated by the development of neutralizing anti-interferon antibodies (NA). This study evaluates the frequency and associated factors of NA among chronic hepatitis C patients treated with different IFNs. METHODS Ninety-five chronic hepatitis C patients were randomized to be treated with recombinant IFN-alpha2a (n = 28), IFN-alpha2b (n = 39) or lymphoblastoid IFN-alpha1 (n = 28) given intramuscularly, 3-6 million units, thrice weekly for 24 weeks. Serum samples collected before, during and after the cessation of treatment were checked for NA. RESULTS Three patients were withdrawn from treatment. All patients were negative for NA before treatment and 13 (14%) patients developed neutralizing antibodies. Of the 26 patients treated with IFN-alpha2a, 6 (23.1%) developed NA. whereas NA were detected in only 6 (15.4%) of 39 and 1 (3.7%) of 27 patients treated with IFN-alpha2b and IFN-alphanl, respectively. Age, gender, HCV genotype, ALT level, IFN total dose and liver histology were not associated with the development of NA. By using multivariate logistic regression it was shown that pretreatment HCV RNA level and IFN preparation were the two major factors related to the production of NA. The response of treatment was related to pretreatment viremia but not to the presence of NA. CONCLUSIONS The frequency of development of NA among Taiwanese patients with chronic hepatitis C might be related to different IFN preparations and pretreatment HCV RNA level. The response of treatment was related to pretreatment HCV RNA level but not to the presence of NA.
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Affiliation(s)
- C Hou
- Dept of Medicine, Kaohsiung Medical, University Hospital, Taiwan
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Dai CY, Yu ML, Chuang WL, Lu SN, Wang JH, Huang JF, Hou C, Chen SC, Lin ZY, Hsieh MY, Wang LY, Tsai JF, Chang WY. The epidemiology of TT virus (TTV) infection in a hepatitis C and B virus hyperendemic area of southern Taiwan. Kaohsiung J Med Sci 2000; 16:500-9. [PMID: 11272796] [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: 02/19/2023] Open
Abstract
TT virus (TTV) is a newly isolated DNA virus from the serum of a patient with posttransfusion hepatitis of unknown etiology in 1997. To evaluate the clinical and molecular characteristics of TT virus (TTV) in a hepatitis C virus (HCV) and B (HBV) hyperendemic area (Masago), 200 residents were enrolled in the study. The sera were tested for alanine aminotransferase (ALT), HCV RNA and GB virus C/Hepatitis G virus (HGV) RNA, TTV DNA, HBsAg, anti-HCV and antibodies to HGV E2-protein (anti-E2). TTV DNA was positive in 99 of the 200 sera with a prevalence rate of 49.5%. The prevalence of HBsAg, anti-HCV, HCV RNA, HGV RNA, anti-E2 and HGV exposure (defined as positive for serum HGV RNA and/or anti-E2) was 38.9%, 69.5%, 64.5%, 17.0%, 25.5% and 39.5%, respectively. Neither clinical nor virological factors were associated with TTV viremia. The rate of ALT abnormality was significantly elevated in HCV RNA-positive (34.9%) than -negative (7.0%) residents (p < 0.001). HCV viremia was the only factor significantly associated with ALT elevation by multiple logistic regression (odds ratio: 6.96; 95% C.I.: 2.60-18.7). We concluded that in this HCV/HBV hyperendemic area, the prevalence of TTV DNA was high. No significant clinical factor was observed to be associated with TTV infection. TTV infection is not related to abnormal ALT levels and ALT abnormality was mainly attributable to HCV but not TTV, HBV or HGV infection.
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Affiliation(s)
- C Y Dai
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University, Taiwan
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Skalski V, Brown KR, Choi BY, Lin ZY, Chen S. A 3'-5' exonuclease in human leukemia cells: implications for resistance to 1-beta -D-arabinofuranosylcytosine and 9-beta -D-arabinofuranosyl-2-fluoroadenine 5'-monophosphate. J Biol Chem 2000; 275:25814-9. [PMID: 10833512 DOI: 10.1074/jbc.m001460200] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 3'-5' exonuclease that excises the nucleotide analogs 1-beta-d-arabinofuranosylcytosine monophosphate and 9-beta-d-arabinofuranosyl-2-fluoroadenine 5'-monophosphate incorporated at 3' ends of DNA was purified from the nuclei of: 1) primary human chronic lymphocytic leukemia cells, 2) primary and established human acute myeloblastic leukemia cells, and 3) lymphocytes obtained from healthy individuals. The activity of this nuclear exonuclease (exoN) is elevated approximately 6-fold in 1-beta-d-arabinofuranosylcytosine-resistant leukemia cells as compared with drug-sensitive cells, and it differs between two healthy individuals and among three leukemia patients. exoN is a 46-kDa monomer, requires 50 mm KCl and 1 mm magnesium for optimal activity, and shows a preference for single-stranded over duplex DNA. Its physical and enzymatic properties indicate that exoN is a previously uncharacterized enzyme whose activity may confer resistance to clinical nucleoside analogs in leukemia cells.
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MESH Headings
- Antimetabolites, Antineoplastic/pharmacology
- Arabinonucleotides/pharmacology
- Cell Nucleus/enzymology
- Cells, Cultured
- Cytidine Monophosphate/analogs & derivatives
- Cytidine Monophosphate/pharmacology
- DNA-Directed DNA Polymerase/metabolism
- Drug Resistance, Neoplasm
- Exodeoxyribonuclease V
- Exodeoxyribonucleases/genetics
- Exodeoxyribonucleases/isolation & purification
- Exodeoxyribonucleases/metabolism
- Exonucleases/biosynthesis
- Exonucleases/chemistry
- Exonucleases/metabolism
- Humans
- Leukemia/enzymology
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/enzymology
- Leukemia, Myeloid, Acute/blood
- Leukemia, Myeloid, Acute/enzymology
- Lymphocytes/enzymology
- Magnesium/metabolism
- Neoplasm Proteins
- Potassium Chloride/metabolism
- Protein Biosynthesis
- Time Factors
- Transcription, Genetic
- Tumor Cells, Cultured
- Up-Regulation
- Vidarabine Phosphate/analogs & derivatives
- Vidarabine Phosphate/pharmacology
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Affiliation(s)
- V Skalski
- Division of Experimental Therapeutics, Ontario Cancer Institute, Princess Margaret Hospital and the Department of Medical Biophysics, University of Toronto, Ontario, Canada.
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Yu ML, Chuang WL, Dai CY, Chen SC, Lin ZY, Hsieh MY, Wang LY, Chang WY. Clinical evaluation of the automated COBAS AMPLICOR HCV MONITOR test version 2.0 for quantifying serum hepatitis C virus RNA and comparison to the quantiplex HCV version 2.0 test. J Clin Microbiol 2000; 38:2933-9. [PMID: 10921954 PMCID: PMC87152 DOI: 10.1128/jcm.38.8.2933-2939.2000] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A second-generation hepatitis C virus (HCV) quantitative assay (COBAS AMPLICOR HCV MONITOR Test, version 2.0; COBAS HCM-2) has been developed, with the intention of achieving equivalent quantification of all HCV genotypes and improving assay performance. To evaluate the clinical performance of COBAS HCM-2 and its utility in predicting the response to alpha interferon treatment, sera from 215 chronic hepatitis C patients were analyzed and the results were compared with those obtained by the Quantiplex bDNA HCV RNA, version 2.0, assay (bDNA-2). The COBAS HCM-2 had significantly greater sensitivity than bDNA-2 (94.9 versus 88.4%; P < 0.001) when performed with sera from chronic hepatitis C patients who were viremic by a qualitative PCR test. The standard deviations for the within-run and between-run reproducibilities of COBAS HCM-2 were <0. 1 and <0.2, respectively, and it showed an improved linear range between genotypes with the threefold serial dilutions tested (r(2) = 0.986 to 0.995). The COBAS HCM-2 results were positively correlated with the bDNA-2 results, but the values for COBAS HCM-2 were on average 0.96 log lower than the values for bDNA-2. The mean difference in quantification values between these two assays did not differ among samples with different genotypes (0.70 to 1.00 log). No genotype-dependent difference in viral load was observed. The pretreatment viral load was significantly lower in complete responders. By using multivariate analysis, the viral load 2 weeks after the initiation of alpha interferon treatment was the strongest predictor of a complete response. In conclusion, COBAS HCM-2 demonstrated good sensitivity, linearity, and reproducibility and efficiency equal to that of bDNA-2 for the quantification of HCV genotypes 1 and 2. Hence, this assay provides a rapid and reliable method for the quantification of HCV RNA in serum and is useful for the planning of interferon treatment.
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Affiliation(s)
- M L Yu
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Lin ZY, Wang JH, Hsieh MY, Yu ML, Chen SC, Chuang WL, Wang LY, Tsai JF, Chang WY. Percutaneous ethanol injection of the supplying artery to hepatocellular carcinoma that is not amenable to conventional treatment. Br J Radiol 2000; 73:833-9. [PMID: 11026857 DOI: 10.1259/bjr.73.872.11026857] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The purpose of this study was to evaluate the clinical usefulness of ultrasound-guided percutaneous ethanol injection of the supplying artery (PEISA) to the tumour in the palliative management of hepatocellular carcinoma (HCC) that is not amenable to conventional treatments. A total of 23 cases of HCC, measuring from 3.1 cm to larger than 15 cm (median 5.4 cm) in 17 cirrhotic patients, were treated by PEISA. PEISA was used to control rapid growth of the tumour in seven patients and to reduce abdominal discomfort caused by rapid expansion of the tumour in 10 patients. Tumours with arterial Doppler signals persisting after PEISA underwent repeated treatment. The follow-up period ranged from 2-48 months. PEISA was achieved in 69 out of 76 attempts (90.8%). The amount of ethanol injected on each occasion ranged from 2.5-33 ml. Follow-up colour Doppler scanning showed complete elimination of tumour Doppler signals in 22 out of 23 lesions (95.7%). Following treatment, one tumour disappeared, 13 tumours shrank and nine tumours were unchanged in size. All patients with abdominal discomfort had relief after treatment. The common complications of PEISA were local pain and fever. In conclusion, PEISA is effective at treating painful HCC unsuitable for conventional treatment.
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Affiliation(s)
- Z Y Lin
- Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan, Republic of China
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Abstract
p53 exhibits 3'-5' exonuclease activity and the significance of this biochemical function is currently not defined. In order to gain information about the potential role(s) of this exonuclease activity, recombinant and wild-type human p53 was examined for excision of nucleotides from defined synthetic DNA substrates. p53 removes nucleotides threefold faster from single-strand DNA than from DNA duplexes, exhibits a 1.5-fold preference for 3'-terminals of DNA that contain a single nucleotide mispair (mismatch) as compared to correctly paired DNA and efficiently excises nucleotides from 3'-ends of blunt and cohesive (staggered) DNA double-strand breaks. The p53 exonuclease is predominantly non-processive on DNA which is 17 nucleotides long (or shorter) and processive on the longer 30-mers. The processivity of nucleotide excision is decreased in the presence of 50 mM potassium phosphate and eliminated when full-length p53 is replaced with the core domain, comprised of amino acids 82-292. Photoaffinity labeling indicates that (1) p53 monomers, rather than dimers, bind to single-strand forms of these oligomers; (2) complexes between p53 and 30-mers are more stable than those formed with 17-mers. The stability of these complexes determines processivity during nucleotide removal and modulates the 3'-5' exonuclease activity of p53. The relevance of substrate specificity of the p53 exonuclease to DNA repair is discussed.
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Affiliation(s)
- V Skalski
- Department of Medical Biophysics, University of Toronto, Canada
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Abstract
Cardiac troponin I (cTnI) was measured by chemiluminescent immunoassay following burn injury. Thirty patients [total body surface area (TBSA) of burn 15-98%] were included in this study and each had four to six blood samples collected at 2-day intervals between the 5th and 14th days post-burn. All patients were found to have increased cTnI on two or more occasions. The mean cTnI concentration was significantly higher in patients with TBSA of burn > 30% (0.34 microg/L compared with 0.09 microg/L, P<0.001) and in those with obvious burn wound exudation (0.32 microg/L compared with 0.12 microg/L, P<0.01). cTnI concentrations peaked at the time when there was obvious burn wound exudation or spontaneous separation of eschar, then decreased after surgical excision. Two patients with persistently high cTnI concentrations developed tachycardia. We conclude that burned patients have varying degrees of non-ischaemic cardiac injury, manifesting as leakage of cTnI from myocytes into the circulation.
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Affiliation(s)
- Y N Chen
- Department of Clinical Laboratory, Guang Zhou Red Cross Hospital, P R China.
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Yu ML, Wang LY, Chuang WL, Dai CY, Sung MH, Chen SC, Lin ZY, Hsieh MY, Tsai JF, Chang WY. Serotyping and genotyping of hepatitis C virus in Taiwanese patients with type C chronic liver disease and uraemic patients on maintenance haemodialysis. J Gastroenterol Hepatol 2000; 15:792-7. [PMID: 10937687 DOI: 10.1046/j.1440-1746.2000.02195.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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] [Indexed: 02/05/2023]
Abstract
BACKGROUND To evaluate a recombinant immunoblot hepatitis C virus (HCV) serotyping assay, which determines HCV serotypes 1, 2, and 3 by detecting type-specific antibodies to core-and NS-4-derived peptides. METHODS Immunoreactivity of type-specific antibodies among 173 chronic hepatitis C patients and 43 haemodialysis patients in Taiwan was examined and the serotyping results were compared with genotyping by Okamoto's method. Serial specimens from 29 patients undergoing interferon-alpha therapy were also evaluated. RESULTS Of the 205 specimens for which genotyping data were available, 51.2% were of serotype 1, 31.7% of serotype 2, 1.0% of serotype 3, 2.4% of either serotype 1 or 3, and the remaining 13.7% were untypable. The serotypable rate was significantly lower in haemodialysis patients than in chronic hepatitis C patients (70.0% vs 94.9%; P < 0.001). Serotyping of genotype 2b specimens was significantly more dependent on core peptide bands than other genotypes. Using genotyping as the reference, the overall sensitivity, specificity and concordance of the recombinant immunoblot HCV serotyping assay were 86.3%, 97.2% and 83.9%, respectively. However, the serotyping assay had significantly lower sensitivity (69.2%), specificity (77.8%) and concordance (53.8%) for genotype 2b specimens. Of nine HCV complete responders, one lost type-specific antibodies 6 months after the cessation of interferon-alpha treatment. CONCLUSIONS These results suggest that, except for less than optimal performance with immunocompromised or genotype 2b patients, the HCV serotyping assay is a practical and useful method for HCV typing in the clinical setting in Taiwan.
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Affiliation(s)
- M L Yu
- Department of Internal Medicine, Kaohsiung Medical College Hospital, Taiwan
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Hsieh MC, Yu ML, Chuang WL, Shin SJ, Dai CY, Chen SC, Lin ZY, Hsieh MY, Liu JF, Wang LY, Chang WY. Virologic factors related to interferon-alpha-induced thyroid dysfunction in patients with chronic hepatitis C. Eur J Endocrinol 2000; 142:431-7. [PMID: 10802518 DOI: 10.1530/eje.0.1420431] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [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] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Hepatitis C virus (HCV), being reported to be associated with a high prevalence of serological markers of autoimmunity in HCV-infected patients, and possibly sharing partial sequences in amino acid segments with thyroid tissue antigens, may be associated with interferon-alpha (IFN-alpha)-induced thyroid dysfunction in chronic hepatitis C patients. We conducted this study to clarify the issue. DESIGN AND METHODS One hundred and fifty chronic hepatitis C patients with normal baseline thyroid function were treated with IFN-alpha 2a, 2b and n1 (3-6 million Units three times weekly for 24 weeks). Pretreatment sera were tested for HCV genotype and HCV RNA levels. Serum thyrotropin, total thyroxine and free thyroxine index were performed every 4 weeks for 24 weeks followed by every 8 weeks for another 24 weeks. RESULTS Twenty-one (14.0%) patients developed early thyroid dysfunction (abnormal thyroid function during the first 3 months of therapy). Female gender, lower HCV RNA levels, IFN-alpha n1 and a lower IFN-alpha dose were significantly associated with early thyroid dysfunction. On multivariate analysis, gender, IFN-alpha preparation and HCV RNA levels were the significant factors associated with early thyroid dysfunction. Seven (4.7%) patients developed thyroid dysfunction during the second 3 months of IFN-alpha therapy. Taken together, 18.7% patients developed thyroid dysfunction. Female, mixed HCV genotype infection and lower HCV RNA levels were significantly associated with thyroid dysfunction. However, only gender remained significantly associated with IFN-alpha-induced thyroid dysfunction in multivariate analysis. CONCLUSIONS The virologic features of HCV may be associated with thyroid dysfunction in chronic hepatitis C patients treated with IFN-alpha. Nevertheless, gender still plays the most important role in IFN-alpha-induced thyroid dysfunction.
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Affiliation(s)
- M C Hsieh
- Department of Internal Medicine, Koahsiung Medical University, Koahsiung, Taiwan, Republic of China
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Gross EA, Li GR, Lin ZY, Ruuska SE, Boatright JH, Mian IS, Nickerson JM. Prediction of structural and functional relationships of Repeat 1 of human interphotoreceptor retinoid-binding protein (IRBP) with other proteins. Mol Vis 2000; 6:30-9. [PMID: 10756179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
PURPOSE We compared the structure and function of interphotoreceptor retinoid-binding protein (IRBP) related proteins and predicted domain and secondary structure within each repeat of IRBP and its relatives. We tested whether tail specific protease (Tsp), which bears sequence similarity to IRBP Domain B, binds fatty acids or retinoids, and whether IRBP possessed protease activity resembling Tsp's catalytic function. These tests helped us to learn whether the primary sequence similarities of family members extended to higher order structural and functional levels. METHODS Predictions derived from multiple sequence alignments among IRBP and Tsp family members and secondary structure computer programs were carried out. The first repeat of human IRBP (EcR1) and Tsp were expressed, purified, and tested for binding properties. Tsp was examined for fluorescence enhancement of retinol or 16-anthroyloxy-palmitic acid (16-AP) to test for ligand binding. IRBP was tested for protease activity. RESULTS Tsp did not exhibit fluorescence enhancement with retinol or 16-AP. IRBP did not exhibit protease activity. The positions of critical residues needed for the ligand binding properties of retinol were predicted. Primary sequence and three-dimensional similarity was found between Domain A of IRBP Repeat 3 and eglin c. CONCLUSIONS The sequence similarity of Tsp and IRBP raised the possibility that each might share the function of the other protein: IRBP might possess protease activity or Tsp might possess retinoid or fatty acid binding activity. Our studies do not support such a shared function hypothesis, and suggest that the sequence similarity is the result of maintenance of structure. The finding of similarity to eglin c in Domain A suggests the possibility of a tight interaction between Domain A and Domain B, possibly implying the need for Domain A in retinoid-binding, and suggesting that both Domains should be present in testing mutations. The positions of predicted critical amino acids suggest models in which a large binding pocket holds the retinoid or fatty acid ligand. These predictions are tested in a companion paper.
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Affiliation(s)
- E A Gross
- Department of Ophthalmology, Emory University, Atlanta, GA 30322, USA
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50
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Lin ZY, Wang LY, Yu ML, Chen SC, Chuang WL, Hsieh MY, Tsai JF, Chang WY. Role of serum C-reactive protein as a marker of hepatocellular carcinoma in patients with cirrhosis. J Gastroenterol Hepatol 2000; 15:417-21. [PMID: 10824887 DOI: 10.1046/j.1440-1746.2000.02149.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [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] [Indexed: 12/09/2022]
Abstract
BACKGROUND The usefulness of C-reactive protein (CRP) as a tumour marker in patients with hepatocellular carcinoma (HCC) is controversial. The purpose of this study was to determine whether CRP estimation could be used to identify patients with HCC among those with cirrhosis. METHODS Serum levels of CRP and alpha-fetoprotein (AFP) were investigated in 122 previously untreated patients with cirrhosis and HCC. Another 76 patients with cirrhosis alone were also investigated as controls. RESULTS Of the subjects tested, 47.5% of patients with HCC and 39.5% of controls had elevated CRP values (> 6 microg/mL). Although using elevated CRP and/or AFP (> 20 ng/mL) as a criterion showed a significant difference between controls and patients with multiple nodular, massive, or diffuse type HCC (all P < 0.005), the clinical application of this criterion was limited because of low specificity (58%) and accuracy (all < 73%). By using receiver-operating characteristic curves no valuable threshold value of CRP was found to discriminate various types of HCC, except for distinguishing the diffuse type from controls. The CRP value of 12 microg/mL could be used as the cut-off value to differentiate diffuse-type HCC from controls (sensitivity 82.4%, specificity 82%, accuracy 82.1%, P<0.005). CONCLUSIONS Serum CRP is not a good marker for HCC. However, very high values of CRP in patients with cirrhosis may suggest the presence of a diffuse-type HCC.
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Affiliation(s)
- Z Y Lin
- Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan, Republic of China.
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