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Lu HJ, Hsieh MC, Wang HM, Hsieh JCH, Yen CJ, Wu SY, Huang HC, Wang HC, Chu PY, Chen TH, Chien CY, Huang TL, Chang YF, Hua CH, Lien MY, Chen JP, Lu WC, Lin JC, Wang CC, Liu YC, Yang MH, Lou PJ. Clinical outcomes of cetuximab-based treatment for distant metastatic head and neck squamous cell carcinoma: A real-world study using Taiwan Head Neck Society registry database. Head Neck 2024; 46:1063-1073. [PMID: 38385970 DOI: 10.1002/hed.27681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND For R/M HNSCC, the differences in prognosis and treatment options between distant metastasis (DM) and locoregional recurrence, especially in the DM group, remain unclear. METHODS From the Taiwan Head Neck Society registry database, patients who were diagnosed with R/M HNSCC and received cetuximab-based frontline therapy were collected for analysis. RESULTS Among the enrolled patients, 59.3% (491/827) belonged to the DM group. The DM group had less primary site of oral cavity, less betel nut chewing, higher lactate dehydrogenase (LDH) levels, and higher LDH/albumin ratio compared with the non-DM group. For the patients with primary site of oral cavity and current smokers, DM coexisted with poorer outcomes. In the DM group, EXTREME-like regimen was more suitable for older patients, those with elevated LDH, and those with higher LDH/albumin ratio than TPExtreme-like regimen. CONCLUSION DM coexisted with poorer prognosis in certain groups. LDH-associated biomarkers may aid treatment options for DM patients.
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Affiliation(s)
- Hsueh-Ju Lu
- Division of Hematology and Oncology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Meng-Che Hsieh
- Department of Hematology and Oncology, E-Da Cancer Hospital, Kaohsiung, Taiwan
- College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Hung-Ming Wang
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Jason Chia-Hsun Hsieh
- Division of Hematology-Oncology, Department of Internal Medicine, New Taipei City Municipal TuCheng Hospital, New Taipei City, Taiwan
- Chang Gung University, Taoyuan, Taiwan
| | - Chia-Jui Yen
- Department of Oncology, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Shang-Yin Wu
- Department of Oncology, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Huai-Cheng Huang
- Department of Oncology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Hui-Ching Wang
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pen-Yuan Chu
- Department of Otolaryngology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Tien-Hua Chen
- Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Oncology, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Chih-Yen Chien
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung City, Taiwan
| | - Tai-Lin Huang
- Department of Hematology-Oncology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Yi-Fang Chang
- Department of Hematology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chun-Hung Hua
- Department of Otorhinolaryngology, China Medical University Hospital, Taichung, Taiwan
| | - Ming-Yu Lien
- Division of Hematology and Oncology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Jo-Pai Chen
- Department of Oncology, National Taiwan University Hospital Yunlin Branch, Douliu City, Taiwan
| | - Wei-Chen Lu
- Department of Radiation Oncology, Changhua Christian Hospital, Changhua, Taiwan
| | - Jin-Ching Lin
- Department of Radiation Oncology, Changhua Christian Hospital, Changhua, Taiwan
| | - Chen-Chi Wang
- Department of Otorhinolaryngology-Head and Neck Surgery, Taichung Veterans General Hospital, Taichung City, Taiwan
| | - Yi-Chun Liu
- Department of Radiation Oncology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Muh-Hwa Yang
- Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Oncology, National Yang-Ming Chiao Tung University, Taipei, Taiwan
| | - Pei-Jen Lou
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Zheng YH, Guo ZQ, Huang HC, Li BB. [Carcinoma cuniculatum of toe: report of a case]. Zhonghua Bing Li Xue Za Zhi 2023; 52:1053-1055. [PMID: 37805403 DOI: 10.3760/cma.j.cn112151-20230110-00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Affiliation(s)
- Y H Zheng
- Department of Pathology, Ganzhou Hospital of Guangdong Provincial People' s Hospital (Ganzhou Municipal Hospital), Ganzhou 341000, China
| | - Z Q Guo
- Department of Pathology, Ganzhou Hospital of Guangdong Provincial People' s Hospital (Ganzhou Municipal Hospital), Ganzhou 341000, China
| | - H C Huang
- Department of Pathology, Ganzhou Hospital of Guangdong Provincial People' s Hospital (Ganzhou Municipal Hospital), Ganzhou 341000, China
| | - B B Li
- Department of Pathology, Ganzhou Hospital of Guangdong Provincial People' s Hospital (Ganzhou Municipal Hospital), Ganzhou 341000, China
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Kao HF, Huang HC, Liao BC, Hong RL. Short-course pembrolizumab and continuous afatinib therapy for recurrent or metastatic head and neck squamous cell carcinoma: a real-world data analysis. BMC Cancer 2022; 22:1228. [PMID: 36443704 PMCID: PMC9703826 DOI: 10.1186/s12885-022-10343-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVES The optimal duration of anti-PD-1 for cancer therapy has not been tested, especially when using combination therapy. Epidermal growth factor receptor (EGFR) pathway blocker was the top compound that enhanced T-cell killing of tumor cells in a high-throughput immune-oncology screen, possibly by stimulate the antigen presentation machinery and other mechanisms. We explored the effect of combination of EGFR inhibition with a short course of anti-PD-1 therapy in patients with recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC). METHOD We analyzed the effect of a short course of anti-PD-1 with continuous afatinib on the survival of a real-world cohort of R/M HNSCC patients. Patient characteristics, treatments, efficacies, and toxicities were reviewed and recorded for analysis. RESULTS From November 2016 to May 2018, 51 consecutive patients received pembrolizumab and afatinib. The cutoff date was June 30, 2022. The most common toxicities (all grades) were diarrhea (62.7%), skin rash (43.1%), mucositis (31.4%), and paronychia (23.5%). The objective response rate was 54.9% (95% confidence interval [CI] 40.3-68.9%). Median progression-free survival was 5.9 months (95% CI: 4.4-7.6 months), and the median overall survival was 10.5 months (95% CI: 6.8-16.5 months). The 12-month, 24-month, 36-month, and 48-month survival rate was 47.0%, 22.5%, 17.7%, and 12.6% respectively. CONCLUSIONS This retrospective study showed that short course pembrolizumab with afatinib therapy has acceptable efficacy in R/M HNSCC patients. The durable response and long-term survival rates were similar to prospective clinical trials. Short course anti-PD-1 therapy, especially in combination with EGFR blocker, is worth for further prospective study.
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Affiliation(s)
- Hsiang-Fong Kao
- grid.19188.390000 0004 0546 0241Department of Medical Oncology, National Taiwan University Cancer Center, No.57, Ln. 155, Sec. 3, Keelung Rd, Da’an Dist Taipei, 106 Taiwan
| | - Huai-Cheng Huang
- grid.412094.a0000 0004 0572 7815Department of Oncology, National Taiwan University Hospital, No.7, Chung Shan S. Rd, Zhongzheng Dist Taipei, 10002 Taiwan
| | - Bin-Chi Liao
- grid.19188.390000 0004 0546 0241Department of Medical Oncology, National Taiwan University Cancer Center, No.57, Ln. 155, Sec. 3, Keelung Rd, Da’an Dist Taipei, 106 Taiwan
| | - Ruey-Long Hong
- grid.412094.a0000 0004 0572 7815Department of Oncology, National Taiwan University Hospital, No.7, Chung Shan S. Rd, Zhongzheng Dist Taipei, 10002 Taiwan
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Huang HC, Zhong CL, Li WP, Mo JH, Wu SH, Zhang BP, Xi XJ. [A case report of gastric adenocarcinoma of fundic gland type as suspected gastric neuroendocrine tumor]. Zhonghua Nei Ke Za Zhi 2022; 61:685-687. [PMID: 35673751 DOI: 10.3760/cma.j.cn112138-20210714-00482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- H C Huang
- The Second Clinical School, Guangzhou University of Chinese Medicine, Guangzhou 510405,China
| | - C L Zhong
- Department of Spleen and Stomach Diseases, Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120,China
| | - W P Li
- Department of Pathology, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou 510120, China
| | - J H Mo
- The Second Clinical School, Guangzhou University of Chinese Medicine, Guangzhou 510405,China
| | - S H Wu
- The Second Clinical School, Guangzhou University of Chinese Medicine, Guangzhou 510405,China
| | - B P Zhang
- Department of Spleen and Stomach Diseases, Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120,China
| | - X J Xi
- Department of Spleen and Stomach Diseases, Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120,China
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Yang MH, Tien Hua C, Hsieh MC, Huang HC, Chien CY, Huang TL, Hua CH, Lien MY, Wang HC, Lu HJ, Yen CJ, Wu SY, Chen JP, Lu WC, Lin JC, Wang CC, Liu YC, Wang HM, Heieh JCH, Lou PJ. A real-world study of prognostic factors and risk-stratification model from Taiwanese patients with recurrent or metastatic head and neck squamous cell carcinoma treated with cetuximab containing regimen. J Clin Oncol 2022. [DOI: 10.1200/jco.2022.40.16_suppl.e18013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e18013 Background: Cetuximab significantly improved survival outcomes of recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC) when combined with chemotherapy. The aim of this study was to explore clinical outcomes, prognostic factors, and risk stratification model for R/M HNSCC patients who received cetuximab-containing regimens based on a real-world, multicenter Taiwanese patient cohort. Methods: This is a retrospective study involving 12 oncology institutions in Taiwan. All R/M HNSCC patients who received cetuximab-containing regimens from January 2017 to December 2020 were included in this study. Prognostic factors were evaluated by univariate/ multivariate analysis. The factors that showed significant differences (p < 0.05) were selected to establish the prediction model. The receiver operating characteristic (ROC) curve was obtained to select cut-off values as a reference for continuous variables. The risk score system incorporated both continuous and categorical factors. The score was determined according to hazard ratio. Results: A total of 818 R/M HNSCC patients were included in this study. Patient characteristics were as following: median age, 56 years; performance status (PS) 0/1/≧2, 16.0%/70.4%/13.3%; oral/ oropharynx/ hypopharynx/ larynx/ others, 51.5%/17.5%/19.7%/6.4%/5.0%; stage at initial diagnosis (AJCC8), 0/I/II/III/IVA/IVB/IVC/unknown, 0.2%/5.9%/8.1%/7.1%/ 35.5%/18.0%/6.7%/18.6%; locoregional recurrence/ distant metastasis/ unknown, 38.4%/ 56.0%/ 5.6%; site of distant metastasis, lung/ distant lymph node/ bone/ liver/ skin/ brain, 60.3%/ 37.1%/ 18.8%/ 6.3%/ 8.1%/ 3.3%; cetuximab-PF/ cetuximab-non-PF regimen, 56.6%/ 43.4%. The median overall survival (mOS) was 10.0 months (95% confidence interval [CI] 9.1-10.9 months). Multivariate analysis disclosed poor prognostic factors on OS, including poor PS, smoking history, R2 resection of primary surgery, present distant metastasis at bone, cetuximab combined with non-PF regimen. In addition, HB and neutrophil to lymphocyte ratio (NLR) were shown to have significant difference between treatment responders and non-responders (inc. SD pts). Risk-stratification model was established including factors: PS, smoking history, bone metastasis, hemoglobin level, and NLR. The mOS of the three risk groups stratified from the prediction model were 13.0/7.0/4.0 months (p < 0.001). Conclusions: Poor prognostic factors for R/M HNSCC treated with cetuximab-based regimens includes poor PS, smoking history, R2 resection of primary surgery, bone metastasis, and non-PF regimen. In this study, the risk-stratification model for cetuximab-based treatment was established using some of the identified prognostic factors help to predict the overall survival for R/M HNSCC patients.
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Affiliation(s)
- Muh-Hwa Yang
- Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chen Tien Hua
- Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Meng-Che Hsieh
- Department of Hematology and Oncology, E-Da Cancer Hospital, Kaohsiung, Taiwan
| | - Huai-Cheng Huang
- Department of Oncology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Chih-Yen Chien
- Department of Otolaryngology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung City, Taiwan
| | - Tai-Lin Huang
- Department of Hematology-Oncology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chun-Hung Hua
- Department of Otorhinolaryngology, China Medical University Hospital, Taichung, Taiwan
| | - Ming-Yu Lien
- Division of Hematology and Oncology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Hui-Ching Wang
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Hsueh-Ju Lu
- Division of Hematology and Oncology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chia-Jui Yen
- Department of Oncology, National Cheng Kung University Hospital, Tainan City, Taiwan
| | - Shang-Yin Wu
- Department of Oncology, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Jo-Pai Chen
- Department of Oncology, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Wei-Chen Lu
- Department of Oncology, National Taiwan University Hospital Yunlin Branch, Yunlin, Taiwan
| | - Jin-Ching Lin
- Department of Radiation Oncology, Changhua Christian Hospital, Taichung, Taiwan
| | - Chen-Chi Wang
- Department of Otolaryngology-Head and Neck Surgery, Taichung Veterans General Hospital, Taichung City, Taiwan
| | - Yi-Chun Liu
- Department of Radiation Oncology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Hung-Ming Wang
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
| | - Jason, Chia-Hsun Heieh
- Division of Hematology-Oncology, Department of Internal Medicine, New Taipei City Municipal TuCheng Hospital, New Taipei, Taiwan
| | - Pei-Jen Lou
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Kao HF, Liao BC, Huang YL, Huang HC, Chen CN, Chen TC, Hong YJ, Chan CY, Chia JS, Hong RL. Afatinib and Pembrolizumab for Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma (ALPHA Study): A Phase II Study with Biomarker Analysis. Clin Cancer Res 2022; 28:1560-1571. [PMID: 35046059 PMCID: PMC9306266 DOI: 10.1158/1078-0432.ccr-21-3025] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [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: 08/23/2021] [Revised: 10/28/2021] [Accepted: 01/13/2022] [Indexed: 01/07/2023]
Abstract
PURPOSE EGFR pathway inhibition may promote anti-programmed cell death protein 1 (PD-1) responses in preclinical models, but how EGFR inhibition affects tumor antigen presentation during anti-PD-1 monotherapy in humans remain unknown. We hypothesized that afatinib, an irreversible EGFR tyrosine kinase inhibitor, would improve outcomes in patients treated with pembrolizumab for recurrent or metastatic head and neck squamous cell carcinoma (HNSCC) by promoting antigen presentation and immune activation in the tumor microenvironment. PATIENTS AND METHODS The ALPHA study (NCT03695510) was a single-arm, Phase II study with Simon's 2-stage design. Afatinib and pembrolizumab were administered to patients with platinum-refractory, recurrent, or metastatic HNSCC. The primary endpoint was the objective response rate (ORR). The study applied gene expression analysis using a NanoString PanCancer Immune Profiling Panel and next-generation sequencing using FoundationOne CDx. RESULTS From January 2019 to March 2020, the study enrolled 29 eligible patients. Common treatment-related adverse events were skin rash (75.9%), diarrhea (58.6%), and paronychia (44.8%). Twelve patients (41.4%) had an objective partial response to treatment. The median progression-free survival was 4.1 months, and the median overall survival was 8.9 months. In a paired tissue analysis, afatinib-pembrolizumab were found to upregulate genes involved in antigen presentation, immune activation, and natural killer cell-mediated cytotoxicity. Unaltered methylthioadenosine phosphorylase and EGFR amplification may predict the clinical response to the therapy. CONCLUSIONS Afatinib may augment pembrolizumab therapy and improve the ORR in patients with HNSCC. Bioinformatics analysis suggested the enhancement of antigen presentation machinery in the tumor microenvironment.
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Affiliation(s)
- Hsiang-Fong Kao
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Medical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan.,Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Bin-Chi Liao
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Medical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Yen-Lin Huang
- Department of Pathology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Pathology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Huai-Cheng Huang
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Medical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Chun-Nan Chen
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Tseng-Cheng Chen
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yuan-Jing Hong
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Yi Chan
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Jean-San Chia
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.,Corresponding Authors: Ruey-Long Hong, National Taiwan University Hospital, No. 7, Chung-Shan S. Road, Taipei 100, Taiwan. Phone: 886-2-2312-3456; E-mail: ; and Jean-San Chia, National Taiwan University, College of Medicine, No. 1, Sec. 1, Jen-Ai Road, Taipei 100, Taiwan. Phone: 886-2-2312-3456, ext 88222; Fax: 886-2-23925238; E-mail:
| | - Ruey-Long Hong
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan.,Corresponding Authors: Ruey-Long Hong, National Taiwan University Hospital, No. 7, Chung-Shan S. Road, Taipei 100, Taiwan. Phone: 886-2-2312-3456; E-mail: ; and Jean-San Chia, National Taiwan University, College of Medicine, No. 1, Sec. 1, Jen-Ai Road, Taipei 100, Taiwan. Phone: 886-2-2312-3456, ext 88222; Fax: 886-2-23925238; E-mail:
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Chen TC, Lo TH, Huang HC, Wang CW, Yang TL, Lou PJ, Ko JY, Wang CP. Outcomes of salvage treatment in patients with recurrent oral squamous cell carcinoma. Head Neck 2021; 43:3764-3774. [PMID: 34510614 DOI: 10.1002/hed.26862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 05/16/2021] [Revised: 08/25/2021] [Accepted: 08/31/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The survival outcomes of different salvage treatments for patients with recurrent oral cancer remain unclear. METHODS A total of 556 patients with recurrent oral cancer between 2010 and 2015 were reviewed. Clinical/pathological risk factors and different salvage treatments were analyzed. RESULTS The 2-year disease-free survival rates after recurrence in patients not receiving salvage operation (305 patients), receiving salvage operation with (121 patients), and without (130 patients) major pathological risk factors (margin or extranodal extension) were 5.3%, 32.4%, and 77.2%, respectively (p < 0.001). The 2-year overall survival rates were 20.3%, 58.4%, and 89.2%, respectively (p < 0.001). A late-onset recurrence, salvage radiation, and salvage operation were independent factors for good disease-free and overall survival. Salvage radiation showed survival benefits among patients not indicated for salvage operations. CONCLUSIONS Salvage operation was the first choice for recurrent oral cancer. Patients who received the salvage operation without major risk factors had the best survival.
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Affiliation(s)
- Tseng-Cheng Chen
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ta-Hsuan Lo
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Huai-Cheng Huang
- Department of Oncology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chun-Wei Wang
- Division of Radiation Oncology, Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Tsung-Lin Yang
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Pei-Jen Lou
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jenq-Yuh Ko
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Cheng-Ping Wang
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Lin MC, Leu YS, Chiang CJ, Ko JY, Wang CP, Yang TL, Chen TC, Chen CN, Chen HL, Liao CT, Tsai ST, Lin JC, Chu PY, Tsai KY, Tsai MH, Huang HC, Yang MH, Wu YH, Terng SD, Chien CY, Liu TW, Lee WC, Lou PJ. Adequate surgical margins for oral cancer: A Taiwan cancer registry national database analysis. Oral Oncol 2021; 119:105358. [PMID: 34049257 DOI: 10.1016/j.oraloncology.2021.105358] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/04/2021] [Accepted: 05/17/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Margin status and lymph node metastasis are the most important prognostic factors for oral cancers. However, while adequate surgical resection is crucial for local control and prognosis, the definition of clear margins has long been a subject of debate. In this study, we analyzed data from a nationwide population-based cancer registry database and evaluated the impact of surgical margins on cancer-specific survival (CSS) and overall survival (OS) as well as the optimal cutoff of adequate surgical margins. METHODS This analysis included all cases of oral cancer diagnosed from 2011 to 2017 that were reported to the Taiwan Cancer Registry database. The staging system was converted from American Joint Committee on Cancer (AJCC) version 7 to AJCC version 8. Kaplan-Meier analysis and Cox proportional-hazards regression were performed to identify covariates that were significantly associated with CSS and OS. RESULTS Between 2011 and 2017, 15,654 of a total of 36,091 cases diagnosed with oral cancers were included in the final analyses. Advanced N stage, positive margins, and advanced T stage are the leading risk factors for poor CSS and OS. When surgical margins were subdivided into 1-mm intervals from 5 mm to positive margin, we found that surgical margins <4 mm and <5 mm predict poor CSS and OS, respectively. CONCLUSIONS This is the first nationwide, population-based cohort to revisit the question of the adequate surgical margins for oral cancers. We conclude that surgical margins ≥4 mm and ≥5 mm are adequate for good CSS and OS, respectively.
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Affiliation(s)
- Mei-Chun Lin
- Department of Surgical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan; Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yi-Shing Leu
- Department of Otolaryngology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chun-Ju Chiang
- Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan; Taiwan Cancer Registry, Taipei, Taiwan
| | - Jenq-Yuh Ko
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Cheng-Ping Wang
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Tsung-Lin Yang
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Tseng-Cheng Chen
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chun-Nan Chen
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hsin-Lin Chen
- Department of Otolaryngology, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Chun-Ta Liao
- Departments of Otolaryncology-Head and Neck Surgery, Chang Gung Memorial Hospital at LinKou, Taoyuan, Taiwan
| | - Sen-Tien Tsai
- Department of Otolaryngology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jin-Ching Lin
- Department of Radiation Oncology, Changhua Christian Hospital, Changhua, Taiwan; Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Pen-Yuan Chu
- Department of Otolaryngology, National Yang-Ming University, Taipei, Taiwan; Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Kuo-Yang Tsai
- Department of Oral and Maxillofacial Surgery, Changhua Christian Hospital, Changhua, Taiwan
| | - Ming-Hsui Tsai
- Department of Otorhinolaryngology, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Huai-Cheng Huang
- Department of Medical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
| | - Muh-Hwa Yang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan; Infection and Immunity Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Yuan-Hua Wu
- Department of Radiation Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan Taiwan
| | | | - Chih-Yen Chien
- Department of Otorhinolaryngology-Head and Neck Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Tsang-Wu Liu
- National Institute of Cancer Research, National Health Research Institutes, Miaoli, Taiwan
| | - Wen-Chung Lee
- Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan; Taiwan Cancer Registry, Taipei, Taiwan
| | - Pei-Jen Lou
- Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan.
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Kao HF, Liao BC, Huang YL, Huang HC, Chen CN, Chen TC, Hong YJ, Chan CY, Hong RL. Afatinib and pembrolizumab for recurrent or metastatic head and neck squamous cell carcinoma (ALPHA Study): A phase II study with biomarker analysis. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.6024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
6024 Background: Epidermal growth factor receptor (EGFR) pathway inhibition may synergize with anti-PD1 activity by inhibiting macrophage function, increasing antigen presentation, and augmenting T cell responses. Afatinib, an irreversible EGFR tyrosine kinase inhibitor (TKI), has been shown to enhance anti-PD1 activity in in vitro and animal studies. We thus hypothesized that adding afatinib to pembrolizumab may improve the treatment outcomes for patients with recurrent or metastatic head and neck squamous cell carcinoma (HNSCC). Methods: The ALPHA study (NCT03695510) is a single-arm, phase II study with a Simon 2-stage design. Patients with platinum-refractory, recurrent, or metastatic HNSCC are eligible for the study. Afatinib (40mg, oral, daily) and pembrolizumab (200mg, every 3 weeks) are administered to eligible patients. The primary endpoint is the objective response rate (ORR). PD-L1 IHC testing (22C3), comprehensive genomic profiling (CGP, Roche Foundation Medicine One CDx), and targeted multiplexed gene expression profiling (Nanostring nCounter PanCancer Immune Profiling Panel) were applied for biomarker analysis. Results: From JAN 2019 to MAR 2020, 29 patients were enrolled in the study. Age: mean = 53.4 years old; M/F = 27/2. Tumor type: oral cavity: 19; oropharynx: 6, hypopharynx: 2, larynx: 2. PD-L1 TPS > = 50: 7/29 (24.1%), CPS > = 20: 8/29 (27.6%), TMB > 10: 0/25 (0%). The common treatment-related adverse events (AEs; all grades, grade > = 3) were skin rash (22/29, 4/29), diarrhea (17/29, 3/29), paronychia (13/29, 0/29), mucositis (9/29, 1/29), and weight loss (2/29, 0/29). One patient experienced grade 2 pneumonitis. Twelve patients had partial responses to the treatment (12/29, ORR: 41.4%). The data cut-off date was 11FEB2021. The median progression free survival (PFS) was 4.1 (95% confidence interval [CI], 1.9-6.3) months. The median overall survival (OS) was 8.4 (95% CI, 4.1-10.8) months. Patients with high PD-L1 expression had a higher response rate (TPS > = 50: ORR = 0.71, CPS > = 20: ORR = 0.63). EGFR amplification might also predict a higher response rate (ORR: 3/3, 100%). MTAP loss or mutation may predict a poor response to the treatment (ORR: 0/5, 0%), shorter PFS (HR: 4.21, [95% CI: 1.34-13.24], p = 0.014), and shorter OS (HR: 4.20 [95% CI: 1.32-13.41], p = 0.015). Nine patients underwent paired pre-treatment and post-treatment biopsies for gene expression analysis. The mRNA of HLA-A, HLA-B, CXCL13, CXCL9, and CD8A were elevated in the post-treatment biopsies. Three patients underwent post-progression biopsies for CGP study. One patient had a new MTAP mutation. Conclusions: Afatinib can modify tumor microenvironment and increase the clinical response rate in pembrolizumab-based therapy in HNSCC patients. PD-L1, EGFR amplification, and MTAP loss/mutation could be biomarkers for cancer immunotherapy. Clinical trial information: NCT03695510.
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Affiliation(s)
- Hsiang-fong Kao
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Bin-Chi Liao
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Lin Huang
- Department of Pathology, National Taiwan University Hospital, Taipei, Taiwan
| | - Huai-Cheng Huang
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Nan Chen
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Tseng-Cheng Chen
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Yuan-Jing Hong
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Yi Chan
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ruey-Long Hong
- Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan
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10
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Ansa-Addo EA, Huang HC, Riesenberg B, Iamsawat S, Borucki D, Nelson MH, Nam JH, Chung D, Paulos CM, Liu B, Yu XZ, Philpott C, Howe PH, Li Z. RNA binding protein PCBP1 is an intracellular immune checkpoint for shaping T cell responses in cancer immunity. Sci Adv 2020; 6:eaaz3865. [PMID: 32523987 PMCID: PMC7259945 DOI: 10.1126/sciadv.aaz3865] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 03/25/2020] [Indexed: 05/11/2023]
Abstract
Distinct lineages of T cells can act in response to various environmental cues to either drive or restrict immune-mediated pathology. Here, we identify the RNA binding protein, poly(C)-binding protein 1 (PCBP1) as an intracellular immune checkpoint that is up-regulated in activated T cells to prevent conversion of effector T (Teff) cells into regulatory T (Treg) cells, by restricting the expression of Teff cell-intrinsic Treg commitment programs. This was critical for stabilizing Teff cell functions and subverting immune-suppressive signals. T cell-specific deletion of Pcbp1 favored Treg cell differentiation, enlisted multiple inhibitory immune checkpoint molecules including PD-1, TIGIT, and VISTA on tumor-infiltrating lymphocytes, and blunted antitumor immunity. Our results demonstrate a critical role for PCBP1 as an intracellular immune checkpoint for maintaining Teff cell functions in cancer immunity.
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Affiliation(s)
- Ephraim A. Ansa-Addo
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
- Pelotonia Institute for Immuno-Oncology and Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center-James, Columbus, OH 43210, USA
| | - Huai-Cheng Huang
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
- National Taiwan University College of Medicine, Graduate Institute of Clinical Medicine, No.7 Chung San South Road, Taipei City 10002, Taiwan
| | - Brian Riesenberg
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
- Pelotonia Institute for Immuno-Oncology and Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center-James, Columbus, OH 43210, USA
| | - Supinya Iamsawat
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Davis Borucki
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Michelle H. Nelson
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Jin Hyun Nam
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Dongjun Chung
- Pelotonia Institute for Immuno-Oncology and Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center-James, Columbus, OH 43210, USA
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Chrystal M. Paulos
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Bei Liu
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Xue-Zhong Yu
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Caroline Philpott
- Genetics and Metabolism Section, Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Bethesda, MD 20892, USA
| | - Philip H. Howe
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Zihai Li
- Department of Microbiology and Immunology and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
- Pelotonia Institute for Immuno-Oncology and Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center-James, Columbus, OH 43210, USA
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Juang JM, Chen CY, Liu YB, Lin LY, Ho LT, Huang HC, Lai LP, Hwang JJ, Wu CK, Lin TT, Yu CC, Lu TP, Chattopadhyay A, Yu QY, Lin JL. P1604Validating previously reported Brugada syndrome-associated common variants identified in caucasian population in the Han Chinese BrS cohort in Taiwan: SADS-BrS registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0363] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Brugada syndrome (BrS) is a sudden arrhythmic death. The prevalence of BrS is higher in the Southeast Asian populations than that in Caucasian patients. A previous genome-wide association study (GWAS) has reported 13 SNPs significantly associated with BrS. However, no study was performed to validate whether these SNPs are enriched in BrS patients in Han Chinese (HC).
Purpose
Evaluating the common variants previously reported in Caucasian BrS patients could be generalized to HC BrS patients in Taiwan
Methods
We genotyped 200 unrelated BrS patients using Affymetrix TWB Array (N=653,291 SNPs, a customized array for HC in Taiwan). The controls are obtained from the Taiwan Biobank (N ≈ 16,000) using the same array. An imputation workflow was shown in Figure 1. To confirm the accuracy of the imputed genotype of each variant, Sanger sequencing was performed in 10% of randomly selected cases.
Results
Among the 3 most important common variants (rs11708996 in SCN5A, rs10428132 in SCN10A and rs9388451 in HEY2/NCOA7) reported in the previous GWAS mainly conducted in Caucasian BrS patients, 2 of them (rs10428132 and rs9388451) were successfully replicated in the HC population in Taiwan (P<0.01). We also found that the differences of minor allele frequency (dMAF: the MAF of cases minus the MAF of controls) of the two variants were relatively smaller between the BrS cases and healthy controls in HC population compared with that in Caucasian populations (dMAF, rs9388451: 0.15 (Caucasian) vs −0.07 (HC); rs10428132: 0.28 (Caucasian) vs 0.11 (HC)). For the remaining 10 common variants reaching genome-wide significance (P=5×10–8) in Caucasian BrS patients, 9 of them were also significantly enriched in the HC BrS patients after the Bonferroni correction (P<0.05/12=0.0042). We next analyzed the variants identified in the previous GWAS on ECG traits (PR interval, QRS duration, QTc interval, and heart rate) in the Caucasian population. Among the reported 75 variants associated with ECG traits, 5 common variants (rs6798015 (PR), rs1760876 (QRS), rs6795970 (PR/QRS), rs2074238 (QTc) and rs314370 (heart rate)) were significant after Bonferroni correction (P<0.05/75=0.00066).
Figure 1
Conclusions
The preliminary results indicated that 85% of common variants of SCN10A and HEY2/NCOA7 previously reported in Caucasian BrS patients are replicated in BrS patients in the HC population but not the common variant of SCN5A (rs11708996). Furthermore, the common variants of SCN10A and HEY2/NCOA7 related to cardiac depolarization or repolarization may also contribute to the development of BrS.
Acknowledgement/Funding
NTUH 106-S3469, NTUH106-S3458 and NTUH 106-018
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Affiliation(s)
- J.-M Juang
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - C Y Chen
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - Y B Liu
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - L Y Lin
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - L T Ho
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - H C Huang
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - L P Lai
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - J J Hwang
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - C K Wu
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - T T Lin
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - C C Yu
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - T P Lu
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
| | - A Chattopadhyay
- National Taiwan University, Bioinformatics and Biostatistics Core, Center of Genomic Medicine, Taipei, Taiwan
| | - Q Y Yu
- National Taiwan University, Bioinformatics and Biostatistics Core, Center of Genomic Medicine, Taipei, Taiwan
| | - J L Lin
- National Taiwan University Hospital, Division of Cardiovascular Center and Department of Internal Medicine, Taipei, Taiwan
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Ansa-Addo EA, Huang HC, Iamsawat S, Yu XZ, Howe PH, Li Z. RNA-binding protein PCBP1 shapes tolerance and immune response by constraining the formation of regulatory T cells. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.57.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Maintaining adequate regulatory T cell (Treg) and effector T cell balance is critical for efficient regulation of tolerance and immune response, respectively. There is increasing evidence that in addition to regulating RNA fate, RNA-binding proteins (RBPs) may also control gene expression and determine the fate of immune cells. Here by studying mice in which the RBP Pcbp1 gene was disrupted in T cells, we define PCBP1 as a global regulator of immune activity that stabilizes immune responses, while repressing the signature programs of Tregs. PCBP1 expression was upregulated in response to T cell activation, but functionally inhibited by TGF-β-mediated phosphorylation. Loss of PCBP1 expression in T cells was associated with dysregulated peripheral homeostasis and impaired effector functions in knockout mice. Indeed, PCBP1-deficient T cells produced less IFN-γ and TNF-α upon stimulation with PMA, plus ionomycin, compared to wild-type littermates. Strikingly, lack of PCBP1 constrained the pathogenicity of effector T cells by conferring resistance to acute graft-vs-host disease in mice. Mechanistically, assessment of the genome-wide function of PCBP1 revealed that it limits the expression of genes associated with commitment to the Treg lineage. Consequently, its absence resulted in a marked increase in the frequency of Foxp3+Treg cells. Together, our findings identify PCBP1 as a distinct regulator of effector T cell functions and the formation of Treg cells in order to control the balance between tolerance and immunity.
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Affiliation(s)
| | | | | | | | - Philip H Howe
- 2Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina
| | - Zihai Li
- 1Department of Microbiology and Immunology
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13
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Duan B, Chen B, Huang HC, Liu RF, Wang HQ, Zheng JX, Zeng YK, Xing JC. [Clinical research about needle-tract assisted standard percutaneous nephrolithotomy for the treatment of complicated upper urinary tract calculi]. Zhonghua Wai Ke Za Zhi 2018; 56:768-771. [PMID: 30369159 DOI: 10.3760/cma.j.issn.0529-5815.2018.10.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the safety and efficacy of needle-tract assisted standard percutaneous nephrolithotomy (PCNL) for the treatment of complicated upper urinary tract calculi. Methods: The clinical data of 1 562 patients with complicated upper urinary calculi who received standard PCNL from December 2013 to December 2017 at Department of Urology, the First Affiliated Hospital of Xiamen University were retrospectively analyzed. There were large residual stones in 256 patients through B-ultrasound exploration after standard PCNL, could't be detected with nephoscope in standard PCNL tracts. 16 F mini PCNL tract were established in 120 cases for treatment of residual stones, while needle-tract were established in order to guide nephroscope to find residual stones in 126 cases. Needle-tract were transferred to 16 F mini PCNL tract for treatment of residual stones in 10 patients if these residual stones could't be detected through needle-tract. Operation time, change of hemoglobin level after operation, incidence of postoperative complications, time of hospitalization and rate of stone clearance were measured in two groups. The statistical methods used included t test, Wilcoxon rank sum test, and χ2 test. Results: There were 1 to 3 mini tracts (M(QR): 1(1)) established in the mini tracts group and 1 to 7 needle-tracts (M(QR): 3(2)) established in the needle-tract group (Z=-10.57, P=0.000). Compared with mini tract group, the operation time ((62.0±18.0) minutes vs. (84.0±15.5) minutes, t=10.242, P=0.000), hospitalization time ((4.40±0.86) days vs. (5.20±0.81) days, t=7.570, P=0.049), hemoglobin dropped ((1.31±0.47) g/L vs. (2.74±0.63) g/L, t=20.12, P=0.000), and incidence of postoperative complications (7.9% (10/126) vs. 19.2% (23/120), χ2=6.674, P=0.01) of needle-tract group were lower, while postoperative stone clearance rate was higher (89.7% vs. 76.7%, χ2=7.497, P=0.006). No perioperative severe complications such as pleural injury, pneumatothorax, perforation of renal, trauma of abdominal organ occurred in two groups. Conclusion: Needle-tract assisted standard PCNL for the treatment of complicated upper urinary calculi can significantly improve stone clearance rate, reduce operation time, decrease risk of kidney and surrounding organs damage.
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Affiliation(s)
- B Duan
- Department of Urology, the First Affiliated Hospital of Xiamen University, Xiamen 361003, China
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14
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Huang HC, Cheng JC, Hwang SY, Kuo YH. Chemical constituents and biological activities of parasitic plant Cuscuta japonica Choisy on Dimocarpus longans Lour. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- HC Huang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung, Taiwan
| | - JC Cheng
- Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung, Taiwan
| | - SY Hwang
- Endemic Species Research Institute, Council of Agriculture, Nantou, Taiwan
| | - YH Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung, Taiwan
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15
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Chen WQ, Zhang GH, Lin HJ, Huang HC, Lin DS, Zheng JL, Zheng DZ. [Visual impact of sub-tenon 's anesthesia during surgery for retinal detachment]. Zhonghua Yan Ke Za Zhi 2017; 53:332-337. [PMID: 28494560 DOI: 10.3760/cma.j.issn.0412-4081.2017.05.004] [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 visual impact and influence factors of sub-Tenon's anesthesia in retinal detachment patients during pars plana vitrectomy (PPV) or combined phacoemulsification and PPV surgery. Methods: In this prospective case series study, 104 consecutive patients who underwent PPV or combined phacoemulsification and PPV under sub-Tenon's anesthesia between October 2012 and December 2013 were enrolled. Intraoperatively, the patients were asked whether they could see the light of the operating microscope or not at 5 minutes after sub-Tenon's anesthesia, and at the end of phacoemulsification, core vitreous removal, peripheral vitreous removal and the whole surgery, with their contralateral eyes being covered tightly and no photobleaching. The best corrected visual acuity and visual evoked potentials were examined and compared with each other preoperatively and at 1.5 months and 3 months postoperatively. Chi-square test was used to compare the detection rate of amaurosis between different modus operandi and whether covered contra-lateral eye. Student-t test was used to compare the difference of age and preoperative BCVA between the patients with or without experienced amaurois. Lastly, BCVA between different times were tested by one-way ANOVA analysis. Results: Without covering the contralateral eyes, the incidence of no light perception in various surgical steps was 0%, while it was 72.1%(75/104), 93.8%(75/80), 96.2%(100/104), 96.2%(100/104) and 86.5%(90/104) at the five timepoints, respectively, when the contralateral eyes were covered tightly. The incidence was 51.9%(54/104), 85.0%(68/80), 85. 6%(89/104), 84.6%(69/104) and 66.3%(88/104), respectively, after photobleaching was excluded. Approximately 95.2%(99/104) of patients reported no light perception at least once, 54.5%(54/99) reported no light perception 5 minutes after sub-Tenon's anesthesia, and 30.3%(30/99) recovered light perception when the surgery was finished. All eyes recovered to at least light perception on the first postoperative day. The best corrected visual acuity and visual evoked potentials at 1.5 months and 3 months postoperatively were significantly better than those before surgery. The BCVA was 1.75±0.78 preoperative, 0.96±0.63 1.5 months after operation, and 0.92±0.57 3 months after operation. There was a significant statistical difference between preoperative BCVA and postoperative BCVA (F=50.61, P<0.01) . In patients without waveform detection preoperatively, PVEP waveform could be found in 43.6% and 61.4% of the pactients at 1.5 months and 3 months after operation respectively. In those had certain waveform preoperatively, PVEP amplitudes rise significantly after surgery (t(1.5)=-2.69, t(3)=-2.97, P<0.05) . Conclusions: No light perception was detected in various surgical steps of vitrectomy under sub-Tenon's anesthesia in most patients. The blocking of optic nerve conduction may be caused by sub-Tenon' s anesthesia. Photobleaching can also have some effect. The incidence of no light perception during the surgery was not correlated with preoperative visual acuity, age and gender. Moreover, the effect was transient and harmless to visual function.(Chin J Ophthalmol, 2017, 53: 332-337).
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Affiliation(s)
- W Q Chen
- Joint Shantou International Eye Center of Shantou University and the Chinese University of Hong Kong, Shantou 515041, China
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Yeh CH, Huang HC, Chang KS, Chen CJ, Yang ML, Tsai SL, Lin HW, Kuan YH. Yi-Chi-Tsung-Ming-Tang Reduced A?(1-40)-induced Neurotoxicity via of Acetylcholine and NMDA Receptors Expression, ROS Generation and Tau Phosphorylation. Indian J Pharm Sci 2017. [DOI: 10.4172/pharmaceutical-sciences.1000244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Huang HC, Lin YS, Chen JM, Yeh CH, Chung KC. The impact of abnormal muscle tone from hemiplegia on reclining wheelchair positioning: a sliding and pressure evaluation. Eur J Phys Rehabil Med 2013; 49:619-628. [PMID: 24104696] [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: 06/02/2023]
Abstract
BACKGROUND Little is known about the influence of existing muscle tone abnormality on the sitting posture of stroke patients in reclining wheelchairs. AIM To investigate the impact of muscle tone abnormality from hemiplegia on the forward sliding and pressure of stroke patients while sitting in reclining wheelchairs. DESIGN Experimental study. SETTING The Assistive Devices/Technology Center at the Rehabilitation Department of hospital. POPULATION 14 able-bodied elders and nonambulatory elderly stroke patients with flaccid (N.=12) or spastic hemiplegia (N.=13) participated in this study. Of the 12 patients with flaccid hemiplegia, 8 suffered from left-sided hemiplegia and 4 from right-sided hemiplegia. Of the 13 patients with spastic hemiplegia, 6 suffered from left-sided hemiplegia and 7 from right-sided hemiplegia. METHODS We performed 3 reclining cycles in wheelchairs with conventional seats and V-shaped seats for each participant. The sliding along the backrest (BS) plane and the seat (SS) plane, mean sitting pressure (MP), and sacral peak pressure (SPP) of the participants were recorded. The Kruskal-Wallis test was used to compare the difference in BS, SS, MP, and SPP between able-bodied elders and stroke patients. RESULTS The BS, SS, and SPP during repetitive reclining were generally greatest in flaccid hemiplegic participants, followed by spastic hemiplegic participants, and finally by able-bodied participants. There was no significant difference in MP among three subject groups on both conventional seats and V-shaped seats in most comparisons. Able-bodied participants' buttocks tended to slide forward on conventional seats but backward on V-shaped seats, whereas hemiplegic participants' buttocks slid forward on both seat types. CONCLUSION Stroke patients with flaccid hemiplegia are the most vulnerable to sacral sitting and higher sacral pressure in reclining wheelchairs, followed by patients with spastic hemiplegia. There is a difference in the displacement pattern between participants with normal muscle tone and those with abnormal muscle tone during wheelchair positioning. People who have hemiplegia with spasticity do not have incremental forward sliding with repetitive reclining in the same way as those who have a flaccid hemiplegia. CLINICAL REHABILITATION IMPACT The findings are valuable for wheelchair prescription and caregiver education.
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Affiliation(s)
- H C Huang
- Department of Physical Medicine and Rehabilitation Chia-Yi Christian Hospital, Chia-Yi, Taiwan -
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Hong CF, Hsieh HY, Chen CT, Huang HC. Development of a Semiselective Medium for Detection of Nalanthamala psidii, Causal Agent of Wilt of Guava. Plant Dis 2013; 97:1132-1136. [PMID: 30722420 DOI: 10.1094/pdis-12-12-1193-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Guava wilt, caused by Nalanthamala psidii, has become an important disease of guava (Psidium guajava) in Taiwan since the 1970s. This study was conducted to develop a semiselective medium for detecting N. psidii in soil and in tissues of diseased guava trees. Among 9 carbon and 21 nitrogen compounds tested in a modified Czapek-Dox medium, the most effective carbon and nitrogen sources for mycelial growth of N. psidii were sucrose and glycine, respectively. Among eight fungicides tested, iprodione at 5 μg ml-1 and azoxystrobin at 1 μg ml-1 were the most effective fungicides for detection of N. psidii in artificially infested soil or in naturally infected guava debris. Based on the requirement for carbon and nitrogen sources and response to fungicides, a semiselective medium designated as modified sucrose-glycine semiselective medium (mSGSSM) was developed for isolation of N. psidii, using the modified Czapek-Dox medium containing 3% sucrose, 0.3% glycine, iprodione at 5 μg ml-1, azoxystrobin at 1 μg ml-1, streptomycin at 200 μg ml-1, and neomycin at 200 μg ml-1. Colonies of N. psidii on mSGSSM at 30°C for 5 to 10 days were white to orange with sparse aerial hyphae. N. psidii was detected more accurately and efficiently on mSGSSM than on other media, including potato dextrose agar, modified Nash-Snyder medium, and modified Czapek-Dox medium. This semiselective medium is effective in detection of N. psidii from various parts of diseased guava trees and in soil; therefore, it would be a useful medium for etiological, ecological, and epidemiological studies of guava wilt.
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Affiliation(s)
- C F Hong
- Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Fengshan 83052, Kaohsiung, Taiwan
| | - H Y Hsieh
- Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Fengshan 83052, Kaohsiung, Taiwan
| | - C T Chen
- Fengshan Tropical Horticultural Experiment Branch, Taiwan Agricultural Research Institute, Fengshan 83052, Kaohsiung, Taiwan
| | - H C Huang
- Emeritus Principal Research Scientist, Agriculture and Agri-Food Canada, Lethbridge, Alberta, Canada
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Huang HC, Cheng AL, Lin CW, Kuo SH. Primary central nervous system diffuse large B cell lymphoma transformed from orbital mucosa-associated lymphoid tissue lymphoma: complete response to combined intrathecal and systemic rituximab. Ann Hematol 2012; 92:989-92. [DOI: 10.1007/s00277-012-1651-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2012] [Accepted: 12/01/2012] [Indexed: 10/27/2022]
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Huang R, Li GQ, Zhang J, Yang L, Che HJ, Jiang DH, Huang HC. Control of postharvest Botrytis fruit rot of strawberry by volatile organic compounds of Candida intermedia. Phytopathology 2011; 101:859-869. [PMID: 21323467 DOI: 10.1094/phyto-09-10-0255] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A study was conducted to identify volatile organic compounds or volatiles produced by Candida intermedia strain C410 using gas chromatography-mass spectrometry, and to determine efficacy of the volatiles of C. intermedia in suppression of conidial germination and mycelial growth of Botrytis cinerea and control of Botrytis fruit rot of strawberry. Results showed that, among 49 volatiles (esters, alcohols, alkenes, alkanes, alkynes, organic acids, ketones, and aldehydes) identified from C. intermedia cultures on yeast extract peptone dextrose agar, two compounds, 1,3,5,7-cyclooctatetraene and 3-methyl-1-butanol, were the most abundant. Synthetic chemicals of 1,3,5,7-cyclooctatetraene; 3-methyl-1-butanol; 2-nonanone; pentanoic acid, 4-methyl-, ethyl ester; 3-methyl-1-butanol, acetate; acetic acid, pentyl ester; and hexanoic acid, ethyl ester were highly inhibitory to conidial germination and mycelial growth of B. cinerea. Inhibition of conidial germination and mycelial growth of B. cinerea by volatiles of C. intermedia was also observed. Meanwhile, results showed that incidence and severity of Botrytis fruit rot of strawberry was significantly (P < 0.01) reduced by exposure of the strawberry fruit to the volatiles from C. intermedia cultures or C. intermedia-infested strawberry fruit. These results suggest that the volatiles of C. intermedia C410 are promising biofumigants for control of Botrytis fruit rot of strawberry.
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Affiliation(s)
- R Huang
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan 430070, China
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He YJ, Malomed BA, Mihalache D, Liu B, Huang HC, Yang H, Wang HZ. Bound states of one-, two-, and three-dimensional solitons in complex Ginzburg-Landau equations with a linear potential. Opt Lett 2009; 34:2976-2978. [PMID: 19794787 DOI: 10.1364/ol.34.002976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We analyze interactions between moving dissipative solitons in one- and multidimensional cubic-quintic complex Ginzburg-Landau equations with a linear potential and effective viscosity. The interactions between the solitons are analyzed by using balance equations for the energy and momentum. We demonstrate that the separation between two solitons forming a bound state decreases with the increase of the slope of the linear potential.
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Affiliation(s)
- Y J He
- State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, 510275, Guangzhou, China
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Abstract
Several studies indicate that microsurgical modified one-layer vasovasostomy is comparable to the two-layer anastomosis with respect to patency and pregnancy rates. The objective of this study was to determine the feasibility and result of modified one-layer vasovasostomy under loupe magnification only. Thirty-two patients aged 28 to 64 years (mean 41.3 +/- 6 years) underwent vasovasostomy at CGMH from July 1997 to June 2002, with all operations being a modified on-layer anastomosis created with the aid of a 3 x loupe. The estimated duration of vasectomy ranged from 4 months to 27 years, with a mean of 9.2 +/- 4.8 years. Postoperative semen analysis and pregnancy were examined. Each patient was followed up at 1,4, and 12 weeks postoperatively. The total operation time ranged from 118 to 228 minutes (average 150 +/- 35 minutes). There was no operation-related complication such as hematoma or wound infection. The patency rate was 89% (25/28), and the pregnancy rate at 2 years or more of follow-up was 39% (11/28). The patency and pregnancy rates were similar to those obtained in most studies of microsurgical vasovasostomy. For uncomplicated vasectomy reversal, this simple loupe-assisted modified one-lyer vasovasostomy seems to provide an adequate anastomosis.
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Affiliation(s)
- M L Hsieh
- The Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, No. 5, Fu-Shing Street, Kweishan, Taoyuan, Taiwan, ROC.
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Hsieh ML, Huang ST, Chen Y, Huang HC, Wang TH, Chu SH, Chang PL. HIGH INGUINAL LOUPE-ASSISTED VARICOCELECTOMY FOR SUBFERTILE MEN WITH VARICOCOCELES: TECHNICAL FEASIBILITY, CLINICAL OUTCOMES AND COMPLICATIONS. ACTA ACUST UNITED AC 2009; 52:179-83. [PMID: 16574599 DOI: 10.1080/01485010500428389] [Citation(s) in RCA: 5] [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: 10/24/2022]
Abstract
254 consecutive patients underwent high inguinal loupe-assisted varicocelectomy. All patients had at least a one year history of infertility with abnormal semen parameters and physical examination and/or color Doppler ultrasound proven varicocele. To facilitate the procedure, an x 3.0 loupe was used during spermatic cord dissection near or at level of internal inguinal ring. Semen analysis and physical examination were performed at 3 monthly intervals. No intra-operative complications occurred. The most common post-operative complications were transient scrotal pain and stitch reaction, occurring in 12% and 4% of men, respectively. Only one permanent and two transient hydroceles were observed. Recurrent or persistent varicocele was identified by physical examination and color Doppler in 5 varicocelectomies (1.4%), and by color Doppler only in 6 varicocelectomies (1.7%). Sperm motility increased from 30 +/- 8% to 46 +/- 20%, and sperm concentration. (10(6)/cc) increased from 24 +/- 18 to 41 +/- 28. The one-year pregnancy rate was 37%. High inguinal loupe-assisted varicocelectomy is a safe, simple, and effective treatment for varicocele.
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Affiliation(s)
- M-L Hsieh
- Department of Urology, Chang Gung Memorial Hospital, Taoyuan, Taiwan, Republic of China.
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Affiliation(s)
- H C Lu
- Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, Republic of China
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Abstract
During the spring of 2006, onion bulbs with gray mold symptoms on the surface were observed in a few supermarkets in Wuhan, China. Onions mummified as they decayed. Further surveys of five randomly selected batches of onion bulbs in one of the supermarkets indicated that the disease occurred in all batches and the disease incidence ranged from 6 to 50%. Eight diseased onion bulbs were collected arbitrarily and isolations were made using homemade potato dextrose agar (PDA). Single-spore cultures of the isolated Botrytis sp. were established and maintained on PDA plates at 20°C. The 10-day-old PDA cultures of all of these isolates were gray and covered with abundant beige, ovoid- or oblong-shaped conidia, which were budded from terminal ampullae formed on dichotomously branching conidiophores. Conidia from these isolates measured 7.6 to 10.4 μm long and 4.2 to 5.6 μm wide, with an average of 8.4 × 5.0 μm. No sclerotia were produced from any of these PDA cultures after incubation at 20°C for 30 days. Morphological characteristics of colonies and conidia of these isolates were similar to Botrytis aclada according to the description made by Yohalem et al. (3). Inoculation of healthy onion bulbs with one of the eight fungal strains, OnionBc-15, resulted in gray mold symptoms similar to those observed in the supermarkets. Microscopic examinations showed that the size and shape of conidia that formed on the surface of diseased bulbs of onion were identical to the size and shape of conidia of OnionBc-15, indicating that this isolate can cause onion bulb rot. The isolate OnionBc-15 was further characterized by molecular techniques. Genomic DNA was extracted from mycelia of this strain and used as a template for amplification of two previously reported DNA regions, the internal transcribed spacer (ITS) region of the ribosomal RNA genes and the L45-550 sequence (1), which can be used to distinguish B. aclada and two closely related species, B. allii and B. byssoidea (3). Universal primers ITS1 and ITS4 were used to amplify the ITS region (2). A 539-bp DNA sequence was generated, cloned, and sequenced (GenBank Accession No. EU093077). The sequence contained two SphI restriction sites and was 99% identical in nucleotides to that of B. aclada strain PRI006 (GenBank Accession No. AJ716295). It is different from B. allii and B. byssoidea, which have only one SphI restriction site for the ITS1/ITS4-amplified DNA sequence (2). The Botrytis-specific primers, BA2f and BA1r, were used to amplify the L45-550 sequence (2). A 413-bp DNA sequence was generated, cloned, and sequenced. The sequence did not contain any ApoI restriction sites. This is also similar to B. aclada, but different from B. allii and B. byssoidea, which contains one ApoI restriction site in the BA2f/BA1r-amplified DNA sequence (2,3). On the basis of morphological characteristics and the two molecular features, it is concluded that the isolate OnionBc-15 belongs to B. aclada. To our knowledge, this is the first report on the occurrence of B. aclada causing onion bulb rot in China. References: (1) K. Nielsen and D. S. Yohalem. Mycologia 93:264, 2001. (2) K. Nielsen et al. Plant Dis. 86:682, 2002. (3) D. S. Yohalem et al. Mycotaxon 85:175, 2003.
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Affiliation(s)
- J Zhang
- The State Key Lab of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Q Zou
- The State Key Lab of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - G Q Li
- The State Key Lab of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - D H Jiang
- The State Key Lab of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - H C Huang
- Agriculture and Agri-Food Canada, Research Centre, Lethbridge, Alberta, T1J 4B1, Canada. This study was supported by the National Science Foundation of China (Grant 30570079)
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Kuo WC, Shyu JJ, Chou NK, Lai CM, Huang HC, Chou C, Jan GJ. Imaging of human aortic atherosclerotic plaques by polarization-sensitive optical coherence tomography. Conf Proc IEEE Eng Med Biol Soc 2007; 2004:1222-4. [PMID: 17271908 DOI: 10.1109/iembs.2004.1403389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Optical coherence tomography (OCT) is analogous to ultrasound imaging except that it uses infrared light instead of sound. Polarization-sensitive optical coherence tomography (PS-OCT) combines the advantages of OCT and provides additional image contrast of the tested sample. We demonstrate this technique for imaging of back-reflected light, birefringence, and fast-axis orientation simultaneously in different kinds of atherosclerosis plaque. This in vitro study suggests birefringence changes in plaque are due to the prominent deposition of collagen or cholesterol by correlating PS-OCT images with histology. Thus the combination of high resolution structural imaging and birefringence detection make PS-OCT a potentially powerful tool for early assessment of atherosclerosis appearance and prediction of plaque rupture.
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Affiliation(s)
- W C Kuo
- Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
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Huang HC, Erickson RS, Yanke LJ, Chelle CD, Mündel HH. First Report of the Purple Variant of Curtobacterium flaccumfaciens pv. flaccumfaciens, Causal Agent of Bacterial Wilt of Bean, in Canada. Plant Dis 2006; 90:1262. [PMID: 30781117 DOI: 10.1094/pd-90-1262a] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bacterial wilt of bean (Phaseolus vulgaris L.) caused by the yellow and orange variants of Curtobacterium flaccumfaciens pv. Flaccumfaciens (Hedges) Collins & Jones was found in western Canada in 2002 (1). A purple variant was found in a pooled sample of discolored cull seeds of great northern bean (cv. US1140) from a crop grown near Bow Island, Alberta, Canada in 2005. Bacterial colonies isolated from purple seed using modified Burkholder's agar (MBA) (3) were convex, glistening, and smooth edged with blue pigment diffusing into the medium. Three isolates (V154, V155, and V254) were identified with conventional tests (2), carbohydrate oxidation (GP Microplates, Biolog Inc., Hayward, CA), and cellular fatty acids (CFA) (MIDI, Inc., Newark, DE). All were grampositive, motile, aerobic rods with yellow colonies producing extracellular blue pigment on MBA when grown at 20 ± 2°C. Bacterial isolates grew at 27°C but grew weakly at 37°C. They were positive for catalase and hydrolysis of hippurate and indoxyl acetate and negative for urease, gelatin liquification, and oxidase. CFA profiles were approximately 48% 15:0 anteiso, 40% 17:0 anteiso, 7% 16:0 iso, and 3% 15:0 iso; with 17:1 anteiso A variable but <1%. Many carbohydrates were oxidized in the Biolog microplates with little acid production. The results match C. flaccumfaciens (2) and the MIDI and Biolog databases, as well as the purple variant of C. flaccumfaciens found in Nebraska, the only previous report of this variant (4). The pathogenicity of the three isolates was tested. Seeds of great northern (cv. US1140) and navy (cv. Morden003) beans were soaked in a bacterial suspension (1 × 108 CFU/ml) or distilled water (control) for 1 h, planted in Cornell mix in root trainers, incubated at 28/22°C (16-h day/8-h night) in a growth cabinet for 14 days, and examined for seedling wilt. The test had three replicates per treatment and 20 seeds per replicate in a completely randomized design. All three isolates were pathogenic to both bean cultivars. The wilt incidences were 51, 57, and 56% on US1140 and 64, 76, and 69% on Morden003 for isolates V154, V155, and V254, respectively. The purple variant of C. flaccumfaciens was reisolated from hypocotyls of wilted seedlings but not from healthy controls. The experiment was repeated using the reisolated bacteria and the results were similar to the first experiment, thus fulfilling Koch's postulates. To our knowledge, this is the first report of the purple variant of C. flaccumfaciens pv. flaccumfaciens in Canada. References: (1) T. F. Hsieh et al. Plant Dis. 86:1275, 2002. (2) K. Komagata et al. Page 1313 in: Bergey's Manual of Systematic Bacteriology. Vol. 2. Williams and Wilkens, Baltimore, MD, 1986. (3) G. A. Nelson and G. Semeniuk. Phytopathology 54:330, 1964. (4) M. L. Schuster et al. Can. J. Microbiol. 14:423, 1968.
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Affiliation(s)
- H C Huang
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, Canada T1J 4B1. LRC Contribution #38706028
| | - R S Erickson
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, Canada T1J 4B1. LRC Contribution #38706028
| | - L J Yanke
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, Canada T1J 4B1. LRC Contribution #38706028
| | - C D Chelle
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, Canada T1J 4B1. LRC Contribution #38706028
| | - H-H Mündel
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, Canada T1J 4B1. LRC Contribution #38706028
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Cheng YS, Rouvier R, Poivey JP, Huang HC, Liu HL, Tai C. Selection responses in duration of fertility and its consequences on hatchability in the intergeneric crossbreeding of ducks. Br Poult Sci 2006; 46:565-71. [PMID: 16359109 DOI: 10.1080/00071660500273193] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
1. From 1992 to 2003, selected (S) and control lines (C) of the laying Brown Tsaiya duck (Anas platyrhynchos) were simultaneously maintained under the same standardised conditions of feeding and management. 2. The selection objective was to increase the number of fertile eggs after a single artificial insemination (AI) with pooled Muscovy semen. From generations G1 to G11, 2452 and 2022 female ducks, in S and C lines, respectively, were measured and recorded. In the S line, the percentage selected varied between 20.2 and 34.3% in females and between 7.2 and 20.8% in males. 3. Selection for number of fertile eggs had a correlated effect of increasing the parameter tau of the logistic curves which fitted the daily variations (d 2 to 15) in fertility or hatchability on the basis of eggs set. The differences S-C for the estimates of the times of half maximal fertility and hatchability increased by 0.41 and 0.37 d per generation between G1 and G11, respectively. 4. The highest increases of fertility per day rates after a single AI were observed between d 5 and 11. Moreover, in the selected line, fertility rate was higher than, or equal to, 90% in d 2 from G8. The same tendencies were observed for the changes in the evolution of hatchability on the basis of eggs set. 5. Selection increased fertility and hatchability according to the egg set rates, especially for d 2 to 8 after AI. Hatchability of fertile eggs was not impaired, confirming that selection for one AI per week was possible in this strain of laying ducks.
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Affiliation(s)
- Y S Cheng
- Livestock Research Institute, Council of Agriculture, Hsin-Hua, Tainan, Taiwan, Republic of China
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Huang HC, Erickson RS, Van Hezewijk B, De Clerck-Floate R. White Mold of Houndstongue (Cynoglossum officinale) Caused by Sclerotinia sclerotiorum in Canada. Plant Dis 2005; 89:1013. [PMID: 30786648 DOI: 10.1094/pd-89-1013c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Houndstongue (Cynoglossum officinale L.) is a rangeland weed introduced into Canada from Eurasia, and it can be highly toxic to livestock feeding in pastures (3). During 2004, houndstongue plants near Creston, BC, Canada developed water-soaked lesions with white mycelia and black sclerotia on leaves and crowns. Isolations from diseased leaf tissues and sclerotia on potato dextrose agar (PDA) at 20°C for 5 to 7 days produced fungal colonies with formation of black sclerotia 5 to 10 mm in diameter. A single hyphal tip isolate from houndstongue. Ss-HT-C. was compared with a sunflower isolate of S. sclerotiorum, sun-87 (1), for morphology and pathogenicity. For apothecial production, Ss-HT-C and sun-87 were grown on PDA in petri dishes at 10°C for 10 weeks, and sclerotia produced were harvested, placed on moist vermiculite in petri dishes, and incubated at 20°C under light for 3 weeks. Mature apothecia were excised, stained with acid fuchsin, mounted on slides, and examined for asci and ascospores with a microscope. There were no morphological differences between Ss-HT-C and sun-87, each producing an ascus with eight binucleate, elliptical ascospores, measuring 4 × 10 μm (width × length), supporting the identity of Ss-HT-C as S. sclerotiorum (2,4). For pathogenicity tests of Ss-HT-C and sun-87, mycelial plugs (8 mm in diameter) were removed from the margin of colonies grown on PDA for 5 days at 20°C, and placed on leaves of C. officinale plants that were grown in a greenhouse (20 ± 4°C) to the rosette stage. Inoculated plants were covered with clear plastic bags, kept in the same greenhouse for 3 days, and the diameters of the leaf lesions developed at inoculation sites were measured. The experiment was run twice with 30 plants per isolate and five leaves per plant. Uninoculated plants covered with plastic bags were used as controls. Experiments used a completely randomized design. Results of leaf inoculations showed that Ss-HT-C and sun-87 were pathogenic to hound-stongue. There was no statistical difference between isolates or trials. The frequency of leaves with lesions was 90% for Ss-HT-C and 93% for sun-87. The mean leaf lesion diameters were 32 and 35 mm for Ss-HT-C and sun-87, respectively. Leaves of control plants remained healthy. S. sclerotiorum was reisolated from leaves with lesions, but not from controls. After 14 to 21 days, new sclerotia, 5 to 10 mm in diameter, were formed on leaves of inoculated plants. The plants eventually died. This study confirms that S. sclerotiorum is the causal agent for the disease of hound-stongue in Canada, and to our knowledge, this is the first world record of infection of this weed by S. sclerotiorum. References: (1) H. C. Huang and G. C. Kozub. Plant Prot. Bull. 31:333, 1989. (2) L. Kohn, Phytopathology 69:881, 1979. (3) J. A. Pfister et al. J. Range Manag. 45:254, 1992. (4) J. A. L. Wong and H. J. Willetts, J. Gen. Microbiol. 112:29, 1979.
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Affiliation(s)
- H C Huang
- Agriculture and Agri-Food Canada Research Centre, Lethbridge
| | - R S Erickson
- Agriculture and Agri-Food Canada Research Centre, Lethbridge
| | - B Van Hezewijk
- Agriculture and Agri-Food Canada Research Centre, Lethbridge
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Lee YT, Lee CM, Lin CS, Sheu SH, Kuo WK, Tsai CW, Huang LC, Huang HC, Wang JS, Tseng WK. A double-blind comparison of the efficacy and tolerability of telmisartan 40-80 mg vs. losartan 50-100 mg in Taiwanese hypertensive patients. Int J Clin Pract 2005:40-5. [PMID: 15617458 DOI: 10.1111/j.1742-1241.2004.00409.x] [Citation(s) in RCA: 8] [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: 12/01/2022] Open
Abstract
A multicentre, randomised, double-blind, double-dummy, parallel-group, dose-titration study was conducted to determine the efficacy and tolerability of telmisartan 40-80 mg once daily compared with losartan 50-100 mg once daily in 180 Taiwanese patients with mild-to-moderate essential hypertension. After an initial 2-week placebo run-in phase, patients were randomised in a double-blind, double-dummy fashion to receive either telmisartan 40 mg or losartan 50 mg. If blood pressure control (diastolic blood pressure [DBP] <90 mmHg or > or = 10 mmHg reduction in DBP) was achieved after 4 weeks, the dose was maintained for the second 4 weeks of the active treatment phase; if not, the dose was doubled to telmisartan 80 mg or losartan 100 mg, respectively, for the second 4 weeks of double-blind treatment. Telmisartan 40-80 mg (n = 86) was as effective as losartan 50-100 mg (n = 90) in reducing trough seated DBP (11.1 vs. 8.7 mmHg, p = 0.144), and was significantly more effective than losartan in reducing trough seated systolic blood pressure (SBP) (22.1 vs. 16.5 mmHg, p = 0.032) and standing SBP (21.0 vs. 16.3 mmHg, p = 0.033). Significantly fewer patients treated with telmisartan than those treated with losartan required uptitration after 4 weeks' treatment (32.6% vs. 61.5%, p = 0.001). Both telmisartan and losartan were well tolerated.
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Affiliation(s)
- Y T Lee
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
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Huang HC, Lin MS, Kudo K, Chang NC, Lee TM. Effect of anti-hypertensive drug dose frequency on the clinic-home blood pressure difference in patients with stage 1 treated hypertension. J Int Med Res 2005; 33:111-8. [PMID: 15651723 DOI: 10.1177/147323000503300112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Clinic blood pressure (CBP) is generally used for diagnosis and treatment monitoring in hypertension, but target organ damage correlates more closely with home blood pressure (HBP). Eliminating the clinic-home blood pressure difference (CHBPD) would make conventional CBP a more accurate alternative to HBP. This prospective, randomized, open trial compared the effect of a once-daily versus a twice-daily regimen of anti-hypertensive therapy on CHBPD. After a 2-week wash-out period, 85 confirmed stage 1 hypertensive patients were randomized to receive 2 mg trichlormethiazide daily in one (40 subjects) or two (45 subjects) daily doses for 3 weeks. CBP and HBP measurements were taken during the third week of treatment and the CHBPD calculated. After treatment, the systolic and diastolic CHBPD values were significantly greater in the once-daily regimen than in the twice-daily regimen. Conventional CBP should not be used as an alternative to HBP for evaluating prognosis and monitoring anti-hypertensive therapy when using a once-daily regimen.
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Affiliation(s)
- H C Huang
- Division of Cardiology, Department of Internal Medicine, Taipei Municipal Yang-Ming Hospital, Taipei, Taiwan
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Li GQ, Huang HC, Acharya SN, Erickson RS. Biological Control of Blossom Blight of Alfalfa Caused by Botrytis cinerea Under Environmentally Controlled and Field Conditions. Plant Dis 2004; 88:1246-1251. [PMID: 30795320 DOI: 10.1094/pdis.2004.88.11.1246] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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
Fungal and bacterial antagonists were tested for their inhibition of sporulation of Botrytis cinerea on detached alfalfa florets. Clonostachys rosea, Gliocladium catenulatum, and Trichoderma atroviride were evaluated for protecting young blossoms and pods of alfalfa from infection by B. cinerea in vitro. C. rosea was further tested to control pod rot and seed rot caused by B. cinerea under field conditions. The results showed that four of the tested antagonists, C. rosea, G. catenulatum, T. atroviride, and Trichothecium roseum, could inhibit sporulation by B. cinerea on detached alfalfa florets. Both C. rosea and G. catenulatum were effective in suppression of infection of alfalfa pods by B. cinerea when inoculated on fresh petals of alfalfa at the anthesis stage, and their efficacy was greater than that of Trichoderma atroviride. A significant suppression of B. cinerea by C. rosea and G. catenulatum on pods and seed of alfalfa was observed when they were inoculated on senescent petals at the pod-development stage. Results of a field trial indicated that C. rosea applied to upper parts of alfalfa plants significantly suppressed pod rot and seed rot caused by B. cinerea, and significantly increased seed production of alfalfa in each of 3 years. These studies show that C. rosea has potential as a biocontrol agent for control of alfalfa blossom blight caused by B. cinerea.
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Affiliation(s)
- G Q Li
- Department of Plant Protection, Huazhong Agricultural University, Wuhan, 430070, China
| | - H C Huang
- Agriculture and Agri-Food Canada, Lethbridge Research Centre, PO Box 3000, Lethbridge, AB, T1J 4B1, Canada
| | - S N Acharya
- Agriculture and Agri-Food Canada, Lethbridge Research Centre, PO Box 3000, Lethbridge, AB, T1J 4B1, Canada
| | - R S Erickson
- Agriculture and Agri-Food Canada, Lethbridge Research Centre, PO Box 3000, Lethbridge, AB, T1J 4B1, Canada
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Abstract
In 1998, an epithermal neutron test beam was designed and constructed at the Tsing Hua Open-Pool Reactor (THOR) for the purpose of preliminary dosimetric experiments in boron neutron capture therapy (BNCT). A new epithermal neutron beam was designed at this facility, and is currently under construction, with clinical trials targeted in late 2004. Depth dose-rate distributions for the THOR BNCT test beam have been measured by means of activation foil and dual ion chamber techniques. Neutron and structure-induced gamma spectra measured at the test beam exit were configured into a source function for the Monte Carlo-based treatment planning code NCTPlan. Dose-rate scaling factors (DRSFs) were determined to normalize computationally derived dose-rate distributions with experimental measurements in corresponding mathematical and physical phantoms, and to thus enable accurate treatment planning using the NCTPlan code. A similar approach will be implemented in characterizing the new THOR epithermal beam in preparation for clinical studies. This paper reports the in-phantom calculated and experimental dosimetry comparisons and derived DRSFs obtained with the THOR test beam.
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Affiliation(s)
- F Y Hsu
- Yuanpei University of Science and Technology, 306 Yuanpei Street, Hsinchu 300, Taiwan.
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Abe K, Abe K, Abe N, Abe T, Adachi I, Aihara H, Akai K, Akatsu M, Akemoto M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Ban Y, Banerjee S, Bay A, Bedny I, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chao Y, Chen KF, Cheon BG, Chistov R, Choi SK, Choi Y, Chuvikov A, Cole S, Danilov M, Dragic J, Drutskoy A, Eidelman S, Eiges V, Enari Y, Epifanov D, Flanagan J, Furukawa K, Gabyshev N, Garmash A, Gershon T, Golob B, Haba J, Hara K, Hastings NC, Hayashii H, Hazumi M, Hinz L, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Huang HC, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki M, Iwasaki Y, Kakuno H, Kamitani T, Kang JH, Kang JS, Kapusta P, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Kibayashi A, Kichimi H, Kikutani E, Kim HJ, Kim JH, Kim SK, Kinoshita K, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Lee YJ, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, MacNaughton J, Mandl F, Marlow D, Matsumoto H, Matsumoto T, Matyja A, Michizono S, Mimashi T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mohapatra D, Moloney GR, Murakami A, Nagamine T, Nagasaka Y, Nakadaira T, Nakamura TT, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ogawa Y, Ohmi K, Ohshima T, Ohuchi N, Oide K, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Parslow N, Piilonen LE, Root N, Rozanska M, Sagawa H, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Semenov S, Senyo K, Shibuya H, Shidara T, Shwartz B, Sidorov V, Singh JB, Soni N, Stamen R, Stanic S, Staric M, Sugahara R, Sumisawa K, Sumiyoshi T, Suzuki K, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Tawada M, Teramoto Y, Tomura T, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Varvell KE, Wang CC, Wang CH, Wang MZ, Watanabe Y, Yabsley BD, Yamada Y, Yamaguchi A, Yamashita Y, Yamauchi M, Yanai H, Yang H, Ying J, Yokoyama M, Yoshida M, Yusa Y, Zhang CC, Zhang ZP, Ziegler T, Zontar D, Zürcher D. Observation of large CP violation and evidence for direct CP violation in B0-->pi(+)pi(-) decays. Phys Rev Lett 2004; 93:021601. [PMID: 15323897 DOI: 10.1103/physrevlett.93.021601] [Citation(s) in RCA: 11] [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] [Received: 01/18/2004] [Indexed: 05/24/2023]
Abstract
We report the first observation of CP violation in B0-->pi(+)pi(-) decays based on 152x10(6) gamma (4S)-->BB decays collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct a B0-->pi(+)pi(-) CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two B meson decay points, we obtain A(pipi)=+0.58+/-0.15(stat)+/-0.07(syst) and S(pipi)=-1.00+/-0.21(stat)+/-0.07(syst). We rule out the CP-conserving case, A(pipi)=S(pipi)=0, at a level of 5.2 standard deviations. We also find evidence for direct CP violation with a significance at or greater than 3.2 standard deviations for any S(pipi) value.
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Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba
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Abstract
Cytokeratins are one group of intermediate filament proteins responsible for the integrity of cell structure, and have been recently reported to play a role in conferring a drug resistance phenotype. MAb Cx-99 is a monoclonal antibody exhibiting the specificity toward its corresponding antigen which was recently identified as the cytokeratin-19 protein. In the present study, we found that the level of cytokeratin-19 in cervical cancer cells could be decreased by incubation of cancer cells with MAb Cx-99. The reduction of cytokeratin-19 level had a killing effect on cervical carcinoma SIHA and HeLa S3 cell lines. The DNA ladder pattern, convoluted nuclei and blebbing morphology were observed with these cells after exposure to MAb Cx-99 for 72 h, suggesting that the cytotoxic mechanism of reduced cytokeratin-19 was mediated by induction of apoptosis. Moreover, the MAb Cx-99 treatment could increase the cytotoxicities of cancer chemotherapeutic agents such as cisplatin and vinblastine to both cervical carcinoma cell lines. The LD80 values were at least 15-fold reduced when cancer cells were treated with cisplatin or vinblastine in the presence of MAb Cx-99. These results suggest that the functional role of cytokeratin-19 was associated with the apoptosis prevention and drug resistance of cervical cancer cells.
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Affiliation(s)
- C C Yuan
- School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
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Huang HC, Erickson RS, Yanke LJ, Hsieh TF, Morrall RAA. First Report of Pink Seed of Lentil and Chickpea Caused by Erwinia rhapontici in Canada. Plant Dis 2003; 87:1398. [PMID: 30812569 DOI: 10.1094/pdis.2003.87.11.1398a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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
A new disease of lentil (Lens culinaris Medik.) and chickpea (Cicer arietinum L.) caused by Erwinia rhapontici (Millard) Burkh. was found in seed samples from commercial fields in Saskatchewan, Canada in 2002. Infected seeds had a pink or pinkish-brown discoloration of the seed coat. Isolation from surface-sterilized pink seeds resulted in bacterial cultures that produced a water-soluble pink pigment on potato dextrose agar (PDA). Four isolates from different lentil crops, LRC 8265, LRC 8310, LRC 8309, and LRC 8313 and one isolate from a chickpea crop, LRC 8266, were tested as previously described (2). Results of the tests were identical to those for pink bean isolates of E. rhapontici (2) with the following minor exceptions: all were negative for Voges-Proskauer; LRC 8266 was positive for tagatose; LRC 8266, LRC 8309, and LRC 8313 were negative for lactose; and LRC 8266 and LRC 8309 were positive for 5-keto gluconate. For pathogenicity tests, each isolate was inoculated into 30 pods from 6 lentil plants (cv. Laird), 30 pods from 6 desi chickpea plants (cv. Myles), and 30 pods from 6 kabuli chickpea plants (cv. Sanford) by the method described for pink seed of pea (1) and bean (2). Each pod was inoculated with 0.1 ml (0.2 ml for kabuli chickpeas) of bacterial suspension, approximately 108 CFU/ml, by injection through the mid-rib at the basal end. The same number of uninoculated and water-inoculated pods served as controls. Plants were kept in the greenhouse (20 ± 5°C) for 4 weeks, after which isolations of the pathogen were performed as described above. In duplicate experiments, all the isolates caused pink lesions on pods and seeds of lentil, desi chickpea, and kabuli chickpea. The frequency of infected seeds among the five isolates (four lentil and one chickpea) ranged from 50 to 100% on lentil, 73 to 100% on desi chickpea, and 43 to 100% on kabuli chickpea. E. rhapontici was reisolated from seeds with lesions but not from asymptomatic seeds. The study demonstrates that in addition to pea (1) and common bean (2), E. rhapontici is also the causal agent of pink seed of lentil and chickpea. The observation that lentil isolates can infect chickpea and vice versa suggests that host specificity may be lacking in E. rhapontici. To our knowledge, this is the first record of E. rhapontici on lentil and chickpea. References: (1) H. C. Huang et al. Can. J. Plant Pathol. 12:445, 1990. (2) H. C. Huang et al. Plant Dis. 86:921, 2002.
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Affiliation(s)
- H C Huang
- Agriculture and Agri-Food Canada Research Centre, P.O. Box 3000, Lethbridge, AB, T1J 4B1, Canada
| | - R S Erickson
- Agriculture and Agri-Food Canada Research Centre, P.O. Box 3000, Lethbridge, AB, T1J 4B1, Canada
| | - L J Yanke
- Agriculture and Agri-Food Canada Research Centre, P.O. Box 3000, Lethbridge, AB, T1J 4B1, Canada
| | - T F Hsieh
- Department of Plant Pathology, Taiwan Agricultural Research Institute, Wufeng 413, Taichung, Taiwan
| | - R A A Morrall
- Department of Biology, University of Saskatchewan, Saskatoon, SK, S7N 5E2, Canada
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Hsieh TF, Huang HC, Erickson RS, Yanke LJ, Mündel HH. First Report of Bacterial Wilt of Common Bean Caused by Curtobacterium flaccumfaciens in Western Canada. Plant Dis 2002; 86:1275. [PMID: 30818492 DOI: 10.1094/pdis.2002.86.11.1275a] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bacterial wilt of common bean (Phaseolus vulgaris L.) caused by Curtobacterium flaccumfaciens pv. flaccumfaciens (Hedges) Collins & Jones (4) was found in 1947 in Ontario, Canada (3), but not in western Canada. Infected seeds exhibit yellow, orange, or purple discoloration (4). Examination of 36.7 kg of cull beans of crops grown in southern Alberta in 2001 obtained from a processing plant revealed 5.9% yellow and 0.014% orange seeds, each with wrinkled seed coats. Bacteria were isolated on potato dextrose agar. Three strains were identified using conventional tests (2), carbohydrate oxidation (GP Microplates, Biolog Inc., Hayward, CA), and cellular fatty acids (CFA) (MIDI, Inc., Newark, DE). Strains were gram-positive, motile, aerobic rods with yellow (YSB-1, YSB-2) or orange (OSB-3) colonies. Growth occurred at 27 and 37°C. The strains were positive for citrate utilization, catalase, hydrolysis of hippurate, and indoxyl acetate, and negative for urease, gelatin liquification, and oxidase. CFA profiles were ≈48% 15:0 anteiso, 37% 17:0 anteiso, 8% 16:0 iso, 3% 15:0 iso, and 3% 16:0; with17:1 anteiso A sometimes present at <2%. Acid production was weak from carbohydrates, but all oxidized many carbohydrates in the microplates. These results match C. flaccumfaciens pv. flaccumfaciens (2) in MIDI and Biolog databases. Strains were tested for pathogenicity using seed and pod inoculations. Seeds of great northern ('US1140') and navy ('AC Skipper') beans were soaked in bacterial suspension (1 to 3 × 108 CFU/ml) for 1 h, sown in Cornell Peatlite Mix (1) in Root Trainers (Spencer-Lemaire Industries, Edmonton, AB, Canada), incubated at 28°C (16-h day) and 22°C (8-h night), and examined for seedling wilt after 10 days. Seeds soaked in sterile distilled water served as controls. Testing was repeated once with 3 replicates per treatment and 10 seeds per replicate. Experiments were conducted using a complete randomization design. For pod inoculation, a suspension (0.1 ml) of each strain was injected into the midrib at the basal end of each young pod of 'AC Skipper'. Pods inoculated with sterile distilled water, 0.1 ml per pod, were used as controls. After 21 days, pods were harvested and examined. Testing was repeated once with three plants per treatment and five pods per plant. Bacteria were reisolated from hypocotyls of wilted seedlings and diseased pods. Results of seed inoculations showed all strains were pathogenic to both cultivars. Wilt incidence was 38, 35, and 57% for strains YSB-1, YSB-2, and OSB-3, respectively, on 'US1140' and 44, 40, and 63% respectively, on 'AC Skipper'. Results of pod inoculations showed 63% (YSB-1) and 55% (YSB-2) of seeds had wrinkled, yellow seed coats, and 72% (OSB-3) of seeds had wrinkled, orange seed coats. Control seedlings and seeds remained healthy. C. flaccumfaciens pv. flaccumfaciens was reisolated from wilted seedlings and seeds showing yellow or orange discoloration, but not from the controls. To our knowledge, this is the first report of bacterial wilt of bean caused by yellow and orange strains of C. flaccumfaciens pv. flaccumfaciens in western Canada. References: (1) J. W. Boodley and R. Sheldrake Jr. N.Y. State Coll. Agric. Life Sci. Inform. Bull. 43, 1977. (2) K. Komagata et al. Page 1313 in: Bergey's Manual of Systematic Bacteriology, Vol. 2, Williams and Wilkens, Baltimore, MD, 1986. (3) Z. A. Patrick, Can. J. Bot. 32:705, 1954. (4) A. W. Saettler. Bacterial wilt. Page 31 in: Compendium of Bean Diseases. R. Hall, ed. American Phytopathology Society, St. Paul, MN, 1994.
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Affiliation(s)
- T F Hsieh
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, T1J 4B1 Canada. LRC Contribution No. 38702073
| | - H C Huang
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, T1J 4B1 Canada. LRC Contribution No. 38702073
| | - R S Erickson
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, T1J 4B1 Canada. LRC Contribution No. 38702073
| | - L J Yanke
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, T1J 4B1 Canada. LRC Contribution No. 38702073
| | - H-H Mündel
- Agriculture and Agri-Food Canada Research Centre, Lethbridge, AB, T1J 4B1 Canada. LRC Contribution No. 38702073
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Huang HC, Erickson RS, Yanke LJ, Mündel HH, Hsieh TF. First Report of Pink Seed of Common Bean Caused by Erwinia rhapontici. Plant Dis 2002; 86:921. [PMID: 30818657 DOI: 10.1094/pdis.2002.86.8.921c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In 2001, a new disease of common bean (Phaseolus vulgaris L.) caused by Erwinia rhapontici (Millard) Burkh. was detected in seed samples from southern Alberta, Canada. Infected seeds had pink or pinkish-brown lesions on the seed coat. The disease was found in great northern (cv. US1140), pink (cv. Viva), and pinto (cv. Othello) beans at low (<0.1%) frequencies. Isolation from surface-sterilized pink seeds resulted in bacterial cultures, which produced a water-soluble pink pigment on potato dextrose agar (PDA). Seven isolates were tested for physiological characteristics using conventional tests (1) and API 50CHE test strips (bioMérieux Canada, St. Laurent, Quebec), and tested for cellular fatty acids using the MIDI system (Newark, DE). All isolates were gram-negative, motile, facultative anaerobic rods with mucoid colonies and produced a pink pigment on PDA. They were positive for citrate utilization, catalase, methyl red, and Voges-Proskauer, and negative for arginine dihydrolase, lysine and ornithine decarboxylases, urease, gelatin liquification, indole production, oxidase, and gas production. Fatty acid profiles matched with E. rhapontici (approximately 30% each 16:0 and 16:1 ω7c/15:0 iso 2OH; 12% 18:1 ω7c: 8% each 17:0 cyclo and 14:0 3OH/16:1 iso; 4 to 5% each 12:0 and 14:0). Isolates were positive for acid production from: N-acetyl glucosamine, l-arabinose, amygdalin, arbutin, cellobiose, esculin (hydrolysis), d-fructose, d-fucose, d-galactose, β-gentiobiose, d-glucose, glycerol, i-myo-inositol, lactose, maltose, d-mannitol, d-mannose, melibiose, d-raffinose, l-rhamnose, ribose, salicin, d-sorbitol, sucrose, trehalose, and d-xylose. These results match published results for E. rhapontici (4). For pathogenicity tests, each isolate was inoculated in 30 pods from six bean plants (cv. US1140) as described for pink seed of peas (2). Each pod was inoculated with 0.1 ml of bacterial suspension, approximately 109 CFU/ml, by injection through the mid-rib at the basal end. The same number of uninoculated and water-inoculated pods served as controls. Plants were kept in the greenhouse (20 ± 5°C) for 4 weeks, after which isolations were done as described above. In duplicate experiments, all isolates caused lesions on pods extending up to 5 cm from the inoculation point with corresponding discoloration of seeds. The frequency of infected seeds varied among isolates, ranging from 20 to 50%. E. rhapontici was reisolated from seeds with lesions, but not asymptomatic seeds. The study concludes that pink seed of common bean is due to E. rhapontici, a pathogen previously reported on peas in Alberta, Canada (2), and Montana (3). References: (1) D. J. Brenner. Bergey's Manual of Systematic Bacteriology, vol.1, Williams and Wilkens, Baltimore, MD, 1984. (2) H. C. Huang et al. Can. J. Plant Pathol. 12:445, 1990. (3) B. K. Schroeder et al. Plant Dis. 86:188, 2002. (4) L. Verdonck et al. Int. J. Syst. Bacteriol. 37:4, 1987.
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Affiliation(s)
- H C Huang
- Agriculture & Agri-Food Canada Research Centre, Lethbridge, Alberta, Canada T1J 4B1
| | - R S Erickson
- Agriculture & Agri-Food Canada Research Centre, Lethbridge, Alberta, Canada T1J 4B1
| | - L J Yanke
- Agriculture & Agri-Food Canada Research Centre, Lethbridge, Alberta, Canada T1J 4B1
| | - H-H Mündel
- Agriculture & Agri-Food Canada Research Centre, Lethbridge, Alberta, Canada T1J 4B1
| | - T F Hsieh
- Taiwan Agricultural Research Institute, Taichung, Taiwan
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Li GQ, Huang HC, Acharya SN. Sensitivity of Ulocladium atrum, Coniothyrium minitans, and Sclerotinia sclerotiorum to benomyl and vinclozolin. ACTA ACUST UNITED AC 2002. [DOI: 10.1139/b02-077] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Assays on mycelial growth and spore germination were carried out to determine the sensitivity of the biocontrol agents Ulocladium atrum and Coniothyrium minitans and the plant pathogen Sclerotinia sclerotiorum to benomyl and vinclozolin. Ulocladium atrum was more tolerant to these fungicides than C. minitans and S. sclerotiorum. The 50% effective concentration (EC50) of U. atrum based on the mycelial growth inhibition was 1467.3 µg active ingredient (a.i.)/mL for benomyl and 12.6 µg a.i./mL for vinclozolin, and the maximum inhibition concentration was higher than 4000 µg a.i./mL for both fungicides. For C. minitans and S. sclerotiorum, however, the EC50 based on mycelial growth inhibition was lower than 1 µg a.i./mL. After incubation for 24 h at 20°C, the germination rate of U. atrum conidia was 9099% on potato dextrose agar (PDA) amended with benomyl at 100500 µg a.i./mL or vinclozolin at 10500 µg a.i./mL. At these concentrations, germ tubes of U. atrum developed into long, branched hyphae in benomyl treatments, but they remained short and clustered in vinclozolin treatments. Pycnidiospores of C. minitans and ascospores of S. sclerotiorum germinated on PDA amended with benomyl at 100500 µg a.i./mL, but the germ tubes did not grow further. Spore germination of C. minitans and S. sclerotiorum was less than 3.2% on PDA amended with vinclozolin at 10500 µg a.i./mL after 24 h. This is the first report on the sensitivity of U. atrum and C. minitans to benomyl and vinclozolin. The results suggest that it is possible to control S. sclerotiorum using a combination of U. atrum and benomyl or vinclozolin.Key words: fungicides, mycelial growth, spore germination, integrated pest management.
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Abe K, Abe K, Adachi I, Ahn BS, Aihara H, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Banas E, Bartel W, Behari S, Behera PK, Beiline D, Bondar A, Bozek A, Browder TE, Casey BC, Chang P, Chao Y, Cheon BG, Choi SK, Choi Y, Dragic J, Drutskoy A, Eidelman S, Enari Y, Fang F, Fujii H, Fukunaga C, Fukushima M, Garmash A, Gordon A, Gotow K, Guo R, Haba J, Hamasaki H, Hanagaki K, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Heenan EM, Higasino Y, Higuchi I, Higuchi T, Hirano H, Hojo T, Hoshi Y, Hou SR, Hou WS, Hsu SC, Huang HC, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwai G, Iwasaki H, Iwasaki Y, Jackson DJ, Jalocha P, Jang HK, Jones M, Kagan R, Kakuno H, Kaneko J, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawai H, Kawamura N, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim H, Kim SK, Kim TH, Kinoshita K, Kobayashi S, Koishi S, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Liventsev D, Lu RS, Marlow D, Matsubara T, Matsui S, Matsumoto S, Matsumoto T, Mikami Y, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Moorhead GF, Mori S, Mori T, Murakami A, Nagamine T, Nagasaka Y, Nagashima Y, Nakadaira T, Nakano E, Nakao M, Nam JW, Narita S, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Peak LS, Peters M, Piilonen LE, Prebys E, Rodriguez JL, Root N, Rozanska M, Rybicki K, Sagawa H, Sakai Y, Sakamoto H, Satapathy M, Satpathy A, Schrenk S, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki JI, Suzuki K, Suzuki S, Suzuki SY, Swain SK, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Tanaka Y, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Vahsen SE, Varvell KE, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yanaka S, Yoshida K, Yusa Y, Yuta H, Zhang CC, Zhang J, Zhao HW, Zheng Y, Zhilich V, Zontar D. Observation of B --> J/psi K(1)(1270). Phys Rev Lett 2001; 87:161601. [PMID: 11690197 DOI: 10.1103/physrevlett.87.161601] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2001] [Indexed: 05/23/2023]
Abstract
We report the first observation of the exclusive decay process B-->J/psi K(1)(1270) using a sample of 11.2M BB macro meson pairs collected in the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We measure branching fractions of B[B(0)-->J/psi K(0)(1)(1270)] = (1.30+/-0.34+/-0.32) x 10(-3) and B[B(+)-->J/psi K(+)(1)(1270)] = (1.80+/-0.34+/-0.39) x 10(-3), where the first error is statistical and the second is systematic. These modes constitute approximately 15% of the total number of B-->J/psi X decays. No evidence is seen for B-->J/psi K(1)(1400) and we set an upper limit for this branching fraction.
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Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
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Huang HC, Chen CM, Wang SD, Lu HH. Adaptive symmetric mean filter: a new noise-reduction approach based on the slope facet model. Appl Opt 2001; 40:5192-5205. [PMID: 18364801 DOI: 10.1364/ao.40.005192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Two new noise-reduction algorithms, namely, the adaptive symmetric mean filter (ASMF) and the hybrid filter, are presented in this paper. The idea of the ASMF is to find the largest symmetric region on a slope facet by incorporation of the gradient similarity criterion and the symmetry constraint into region growing. The gradient similarity criterion allows more pixels to be included for a statistically better estimation, whereas the symmetry constraint promises an unbiased estimate if the noise is completely removed. The hybrid filter combines the advantages of the ASMF, the double-window modified-trimmed mean filter, and the adaptive mean filter to optimize noise reduction on the step and the ramp edges. The experimental results have shown the ASMF and the hybrid filter are superior to three conventional filters for the synthetic and the natural images in terms of the root-mean-squared error, the root-mean-squared difference of gradient, and the visual presentation.
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Lin S, Huang HC, Chen LL, Lee CC, Huang TS. GL331 induces down-regulation of cyclin D1 expression via enhanced proteolysis and repressed transcription. Mol Pharmacol 2001; 60:768-75. [PMID: 11562439] [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: 02/21/2023] Open
Abstract
GL331 is a novel podophyllotoxin-derived compound. In this study, GL331 induced human lung adenocarcinoma cell line CL1-5 growth arrest before death during the initial 24-h incubation period. We found that GL331 had no inhibitory effect on the expression of cyclins E, A, B1, CDK 4, and CDK 2; instead, its cell growth-inhibitory effect was partly attributable to an early down-regulation of cyclin D1 expression and in turn the reduction of retinoblastoma protein phosphorylation. GL331 enhanced the proteolysis of cyclin D1, and a proteasome inhibitor was able to block GL331-caused cyclin D1 reduction, suggesting that GL331-stimulated cyclin D1 degradation was through proteasomal processes. Additionally, GL331 reduced cellular cyclin D1 mRNA level down to 45% of control in 4 h and further to around 20% in 12 h. However, GL331 did not accelerate the disappearance of cyclin D1 mRNA under the condition of transcription blockage induced by actinomycin D. It was reported that a certain region in the 3'-untranslated region (UTR) of cyclin D1 mRNA mediated the mRNA degradation upon extracellular stresses. Herein, transient transfection studies demonstrated that the 3'-UTR insertion did not confer the susceptibility of luciferase reporter gene to the GL331 treatment. Together, these data suggested that GL331 did not decrease the stability of cyclin D1 mRNA. On the other hand, we found that GL331 specifically inhibited the cyclin D1 promoter-driven luciferase reporter activity. Western blot analyses showed that GL331 decreased the level of phosphorylated extracellular signal-regulated kinase (Erk), with no effect on p38 or c-Jun NH(2)-terminal kinase. Furthermore, GL331's inhibition of cyclin D1 promoter was attenuated by ectopic Erk-2 overexpression. These data suggested that GL331 inhibited cyclin D1 gene transcription via the Erk signaling pathway. In summary, we report that GL331 induced an early decline of cyclin D1 expression by dual mechanisms: 1) enhancement of protein turnover and 2) repression of Erk-mediated gene transcription.
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Affiliation(s)
- S Lin
- Cooperative Laboratory at Veterans General Hospital, Cancer Research Division, National Health Research Institutes, Taipei, Taiwan, Republic of China
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Abe K, Abe K, Adachi I, Ahn BS, Aihara H, Akatsu M, Alimonti G, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Bartel W, Behari S, Behera PK, Beiline D, Bondar A, Bozek A, Browder TE, Casey BC, Chang P, Chao Y, Cheon BG, Choi SK, Choi Y, Eidelman S, Enari Y, Enomoto R, Fang F, Fujii H, Fukunaga C, Fukushima M, Garmash A, Gordon A, Gotow K, Guo R, Haba J, Hamasaki H, Hanagaki K, Handa F, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Heenan EM, Higuchi I, Higuchi T, Hirano H, Hojo T, Hoshi Y, Hou WS, Hsu SC, Huang HC, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwai G, Iwasaki H, Iwasaki Y, Jackson DJ, Jalocha P, Jang HK, Jones M, Kagan R, Kakuno H, Kaneko J, Kang JH, Kang JS, Katayama N, Kawai H, Kawai H, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim H, Kim SK, Kinoshita K, Kobayashi S, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Lee MH, Lee SH, Liventsev D, Lu RS, Marlow D, Matsubara T, Matsumoto S, Matsumoto T, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Mori S, Mori T, Murakami A, Nagamine T, Nagasaka Y, Nakadaira T, Nakano E, Nakao M, Nam JW, Narita S, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Peak LS, Peters M, Piilonen LE, Rodriguez JL, Root N, Rozanska M, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satapathy M, Satpathy A, Schrenk S, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Sidorov V, Singh JB, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki JI, Suzuki K, Suzuki S, Suzuki SY, Swain SK, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Usov Y, Vahsen SE, Varner G, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yanaka S, Yokoyama M, Yoshida K, Yusa Y, Yuta H, Zhang CC, Zhang J, Zhao HW, Zheng Y, Zhilich V, Zontar D. Observation of Cabibbo suppressed B --> D(*)K- decays at Belle. Phys Rev Lett 2001; 87:111801. [PMID: 11531511 DOI: 10.1103/physrevlett.87.111801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2001] [Indexed: 05/23/2023]
Abstract
We report observations of the Cabibbo suppressed decays B-->D((*))K- using a 10.4 fb(-1) data sample accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. We find that the ratios of Cabibbo suppressed to Cabibbo favored branching fractions are B(B--->D0K-)/B(B--->D0pi(-)) = 0.079+/-0.009+/-0.006, B(B(0)-->D+K-)/B(B(0)-->D+pi(-)) = 0.068+/-0.015+/-0.007, B(B--->D(*0)K-)/B(B--->D(*0)pi(-)) = 0.078+/-0.019+/-0.009, and B(B(0)-->D(*+)K-)/B(B(0)-->D(*+)pi(-)) = 0.074+/-0.015+/-0.006. These are the first observations of the B-->D+K-, D(*0)K-, and D(*+)K- decay processes.
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Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba
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Abe K, Abe K, Adachi I, Ahn BS, Aihara H, Akatsu M, Alimonti G, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Bartel W, Behari S, Behera PK, Beiline D, Bondar A, Bozek A, Browder TE, Casey BC, Chang P, Chao Y, Chen KF, Cheon BG, Choi SK, Choi Y, Eidelman S, Enari Y, Enomoto R, Fang F, Fujii H, Fukushima M, Garmash A, Gordon A, Gotow K, Guo R, Haba J, Hamasaki H, Hanagaki K, Handa F, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Heenan EM, Higuchi I, Higuchi T, Hirano H, Hojo T, Hoshi Y, Hou WS, Hsu SC, Huang HC, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwai G, Iwasaki H, Iwasaki Y, Jackson DJ, Jalocha P, Jang HK, Jones M, Kakuno H, Kaneko J, Kang JH, Kang JS, Katayama N, Kawai H, Kawai H, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim H, Kim SK, Kinoshita K, Kobayashi S, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Lee MH, Lee SH, Liventsev D, Lu RS, Marlow D, Matsubara T, Matsumoto S, Matsumoto T, Mikami Y, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Mori S, Mori T, Murakami A, Nagamine T, Nagasaka Y, Nakadaira T, Nakano E, Nakao M, Nam JW, Narita S, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Peak LS, Peters M, Piilonen LE, Rodriguez JL, Root N, Rozanska M, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satapathy M, Satpathy A, Schrenk S, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Sidorov V, Singh JB, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki JI, Suzuki K, Suzuki S, Suzuki SY, Swain SK, Tajima H, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Usov Y, Vahsen SE, Varner G, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yanaka S, Yokoyama M, Yusa Y, Yuta H, Zhang CC, Zhang J, Zhao HW, Zheng Y, Zhilich V, Zontar D. Measurement of branching fractions for B --> pipi, Kpi, and KK decays. Phys Rev Lett 2001; 87:101801. [PMID: 11531472 DOI: 10.1103/physrevlett.87.101801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2001] [Indexed: 05/23/2023]
Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba
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Machida K, Trifonov LS, Ayer WA, Lu ZX, Laroche A, Huang HC, Cheng KJ, Zantige JL. 3(2H)-Benzofuranones and chromanes from liquid cultures of the mycoparasitic fungus Coniothyrium minitans. Phytochemistry 2001; 58:173-177. [PMID: 11524128 DOI: 10.1016/s0031-9422(01)00129-7] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two 3(2H)-benzofuranones and three chromanes were isolated from the mycoparasitic fungus Coniothyrium minitans. Their structures and absolute stereochemistry were determined by spectroscopic methods.
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Affiliation(s)
- K Machida
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
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Abe K, Abe K, Abe R, Adachi I, Ahn BS, Aihara H, Akatsu M, Alimonti G, Asai K, Asai M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Banas E, Behari S, Behera PK, Beiline D, Bondar A, Bozek A, Browder TE, Casey BC, Chang P, Chao Y, Chen KF, Cheon BG, Chistov R, Choi SK, Choi Y, Dong LY, Dragic J, Drutskoy A, Eidelman S, Eiges V, Enari Y, Enomoto R, Everton CW, Fang F, Fujii H, Fukunaga C, Fukushima M, Gabyshev N, Garmash A, Gershon TJ, Gordon A, Gotow K, Guler H, Guo R, Haba J, Hamasaki H, Hanagaki K, Handa F, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Heenan EM, Higasino Y, Higuchi I, Higuchi T, Hirai T, Hirano H, Hojo T, Hokuue T, Hoshi Y, Hoshina K, Hou SR, Hou WS, Hsu SC, Huang HC, Igarashi Y, Iijima T, Ikeda H, Ikeda K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwai G, Iwasaki H, Iwasaki Y, Jackson DJ, Jalocha P, Jang HK, Jones M, Kagan R, Kakuno H, Kaneko J, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawai H, Kawakami Y, Kawamura N, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim H, Kim SK, Kim TH, Kinoshita K, Kobayashi S, Koishi S, Konishi H, Korotushenko K, Krokovny P, Kulasiri R, Kumar S, Kuniya T, Kurihara E, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee MH, Lee SH, Leonidopoulos C, Lin YS, Liventsev D, Lu RS, MacNaughton J, Marlow D, Matsubara T, Matsui S, Matsumoto S, Matsumoto T, Mikami Y, Misono K, Miyabayashi K, Miyake H, Miyata H, Moffitt LC, Moloney GR, Moorhead GF, Mori S, Mori T, Murakami A, Nagamine T, Nagasaka Y, Nagashima Y, Nakadaira T, Nakamura T, Nakano E, Nakao M, Nakazawa H, Nam JW, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Ohshima Y, Okabe T, Okazaki T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Peak LS, Peters M, Piilonen LE, Prebys E, Rodriguez JL, Root N, Rozanska M, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satapathy M, Satpathy A, Schrenk S, Semenov S, Senyo K, Settai Y, Sevior ME, Shibuya H, Shwartz B, Sidorov A, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki J, Suzuki K, Suzuki S, Suzuki SY, Swain SK, Tajima H, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Vahsen SE, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamanaka T, Yamashita Y, Yamauchi M, Yanaka S, Yashima J, Yokoyama M, Yoshida K, Yusa Y, Yuta H, Zhang CC, Zhang J, Zhao HW, Zheng Y, Zhilich V, Zontar D. Observation of large CP violation in the neutral B meson system. Phys Rev Lett 2001; 87:091802. [PMID: 11531561 DOI: 10.1103/physrevlett.87.091802] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2001] [Indexed: 05/23/2023]
Abstract
We present a measurement of the standard model CP violation parameter sin2 phi(1) based on a 29.1 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is fully reconstructed as a J/psi K(S), psi(2S)K(S), chi(c1)K(S), eta(c)K(S), J/psi K(L), or J/psi K(*0) decay and the flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we determine sin2 phi(1) = 0.99+/-0.14(stat)+/-0.06(syst). We conclude that we have observed CP violation in the neutral B meson system.
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Affiliation(s)
- K Abe
- High Energy Accelerator Research Organization (KEK), Tsukuba
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Lin CE, Chen MJ, Huang HC, Chen HW. Capillary electrophoresis study on the micellization and critical micelle concentration of sodium dodecyl sulfate. Influence of solubilized solutes. J Chromatogr A 2001; 924:83-91. [PMID: 11521911 DOI: 10.1016/s0021-9673(01)00731-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The influence of solubilized solutes on the micellization and critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) were investigated by means of capillary electrophoresis (CE). Three different structural types of test solutes, including chloropyridines. chlorophenols and cephalosporins with different binding strength to SDS micelles, were selected in this study. The variations of the effective electrophoretic mobility of these solutes as a function of SDS concentration in the premicellar and micellar regions were analyzed. Interestingly, the results indicate that, in the presence of these solubilized solutes, the micellization of SDS may occur over a range of SDS concentration, with the aggregate size increasing over this range. Depending on the nature of solubilized solutes and the extent of the interactions between solubilized solutes and SDS micelles, the CMC value of SDS may vary significantly. The incorporation of solubilized solutes into SDS micelles to form mixed micelles is proposed to interpret the migration behavior of solubilized solutes in CE.
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Affiliation(s)
- C E Lin
- National Taiwan University, Department of Chemistry, Taipei
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Chu CJ, Chen CT, Wang SS, Lee FY, Chang FY, Lin HC, Wu SL, Lu RH, Chan CC, Huang HC, Lee SD. Hepatic encephalopathy in rats with thioacetamide-induced fulminant hepatic failure: role of endotoxin and tumor necrosis factor-alpha. Zhonghua Yi Xue Za Zhi (Taipei) 2001; 64:321-30. [PMID: 11534799] [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: 02/21/2023]
Abstract
BACKGROUND Hepatic encephalopathy, a complex neuropsychiatric syndrome secondary to acute liver failure, chronic parenchymal liver disease or portal-systemic shunting, may possibly develop through mediators of endotoxin and tumor necrosis factor-alpha (TNF-alpha). However, there are no published data concerning the relationships between the severity of encephalopathy and the plasma levels of endotoxin and TNF-alpha. METHODS Male Sprague-Dawley rats weighing about 300-350 g were used. Fulminant hepatic failure was induced by intraperitoneal injection ofthioacetamide (350 mg/kg/day) for 3 consecutive days. Severity of encephalopathy was assessed by measuring motor counts using an Opto-Varimex animal activity meter. Plasma levels of endotoxin and TNF-alpha were determined by chromogenic Limulus assay and ELISA method, respectively. RESULTS Our study revealed that higher plasma levels of endotoxin (> 5.9 pg/ml) and TNF-alpha (> 18.8 pg/ml) were significantly associated with more blunted motor activities in rats with fulminant hepatic failure (p < 0.05). A significant correlation was observed between plasma concentrations of endotoxin and TNF-alpha (r = 0.59, p < 0.001). Plasma levels of endotoxin were weakly correlated with the total movements in an open field (r = -0.34, p = 0.032) and the counts of ambulatory (r = -0.38, p = 0.014) and vertical movements (r = -0.40, p = 0.010). There were no correlations between the motor counts and plasma levels of TNF-alpha (p > 0.05). CONCLUSIONS In addition to endotoxin and TNF-alpha, other factors may participate in the pathogenesis of hepatic encephalopathy in rats with thioacetamide-induced fulminant hepatic failure.
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Affiliation(s)
- C J Chu
- Department of Medicine, Taipei Veterans General Hospital, National Yang-Ming University School of Medicine, Taiwan, ROC
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Lin CE, Huang HC, Chen HW. A capillary electrophoresis study on the influence of beta-cyclodextrin on the critical micelle concentration of sodium dodecyl sulfate. J Chromatogr A 2001; 917:297-310. [PMID: 11403482 DOI: 10.1016/s0021-9673(01)00636-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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: 11/24/2022]
Abstract
The influence of beta-cyclodextrin (beta-CD) on the critical micelle concentration (CMC) of sodium dodecyl sulfate (SDS) was investigated by capillary electrophoresis using anionic chlorophenols as probe molecules at pH 7.0. The variations of the electrophoretic mobility of probe molecules as a function of surfactant concentration in both premicellar and micellar regions in the absence and presence of beta-CD was analyzed. The results indicate that, as a consequence of a strong inclusion complexation between beta-CD and SDS, the encapsulation of beta-CD with probe molecules is greatly diminished, or even vanished, in the presence of SDS. The complexes formed between beta-CD and SDS monomers exist predominantly in the form of a 1:1 stoichiometry, while the complexes with a 2:1 stoichiometry reported previously in the literature as a minor component may exist by less than 10%. The elevation of the CMC value of SDS depends not only on the concentration of beta-CD in the buffer electrolyte but also on methanol content in the sample solution. The binding constants of probe molecules to beta-CD, to surfactant molecules, and to the complexes formed between beta-CD and SDS are reported.
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Affiliation(s)
- C E Lin
- Department of Chemistry, National Taiwan University, Taipei
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Abstract
Glucocorticoid-induced apoptosis is a well-recognized physiological regulator of T-cell number and function. Alisol B acetate, a triterpene from Alisma Plantago-aquatica, has a glucocorticoid-like structure, and may have a similar function like glucocorticoid-induced apoptosis in both vascular smooth muscle cell line (A7r5) and human acute lymphoblastic leukemia cell line (CEM cells). For exploring its mechanism, mitochondria membrane potential and apoptosis-related gene expression were discussed. Alisol B (10(-6)-10(-4) M) inhibited serum-stimulated DNA synthesis in a concentration-dependent manner (IC50) = 4.0 +/- 0.8 x 10(-6) M in A7r5 and 2.1 +/- 1.2 x 10(-6) M in CEM cells). The cell viability was reduced at 10(-4) M of alisol B. Similar results were seen in dexamethasone treatment (a synthetic glucocorticoid, 10(-6) M, 48 h). Apoptosis was induced after the cells were exposed to 10(-5)-10(-4) M alisol B or 10(-6) M dexamethasone for 48 h. The mitochondrial membrane potential (delta psi(m)) was significantly reduced after the alisol B treatment, indicating that the mitochondria might play a role in the alisol B induced cell apoptosis. Alisol B (10(-5)-10(-4) M) increased the levels of c-myc and bax mRNA and proteins, but not on the anti-apoptotic proto-oncogene, bcl-2, in A7r5 and CEM cells. In contrast, dexamethasone (10(-6) M) treatment only caused significant increase in c-myc mRNA levels. These results suggest that the increased ratio of Bax/Bcl-2 and the decreased mitochondrial membrane potential might be involved in the mechanisms of alisol B-induced cell apoptosis.
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Affiliation(s)
- H W Chen
- Office for Medical Research, National Taiwan University Hospital, Taipei
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