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Huang WW, Cheng JT, Hsiao WT, Chiou WH. Stereodivergent Synthesis of Alkaloid (±)-223A and (±)-6- epi-223A via Rh-Catalyzed Hydroformylation Double Cyclization. J Org Chem 2024; 89:5091-5097. [PMID: 38456271 PMCID: PMC11002921 DOI: 10.1021/acs.joc.3c02366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 02/21/2024] [Accepted: 02/26/2024] [Indexed: 03/09/2024]
Abstract
A stereodivergent approach toward total syntheses of Dendrobatid alkaloids 223A and 6-epi-223A is described. The approach features a concise construction of an indolizidine skeleton by Rh-catalyzed domino hydroformylation double cyclization and sequential stereocontrolled transformations such as reductive alkylation or anti-selective α-alkylation of the 5-oxoindolizidine. These stereoselective reactions afford the desired stereochemistry in the targets.
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Affiliation(s)
- Wen-Wei Huang
- Department of Chemistry, National Chung-Hsing University, Taichung 402202, Taiwan, R.O.C.
| | | | | | - Wen-Hua Chiou
- Department of Chemistry, National Chung-Hsing University, Taichung 402202, Taiwan, R.O.C.
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Huang YP, Huang WW, Tsai KF, Shiao LR, Yang ZH, Tseng SY, Lin YH, Chen CY, Chan P, Leung YM. CDN1163, a SERCA activator, causes intracellular Ca 2+ leak, mitochondrial hyperpolarization and cell cycle arrest in mouse neuronal N2A cells. Neurotoxicology 2023; 98:9-15. [PMID: 37429421 DOI: 10.1016/j.neuro.2023.07.001] [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: 03/05/2023] [Revised: 06/11/2023] [Accepted: 07/07/2023] [Indexed: 07/12/2023]
Abstract
OBJECTIVE Activity or expression of sarcoplasmic/endoplasmic reticulum Ca2+ ATPase (SERCA) is diminished in some disease states such as cardiac failure and diabetes mellitus. A newly developed activator of SERCA, CDN1163, reportedly rescued or alleviated pathological conditions attributed to dysfunctional SERCA. We examined whether CDN1163 could relieve mouse neuronal N2A cell growth inhibition caused by cyclopiazonic acid (CPA, SERCA inhibitor). We also examined how CDN1163 affected cytosolic Ca2+, mitochondrial Ca2+ and mitochondrial membrane potential. METHODS Cell viability was measured by MTT assay and trypan blue exclusion test. Cytosolic Ca2+, mitochondrial Ca2+ and mitochondrial membrane potential were measured using fura 2, Rhod-2 and JC-1, respectively, as fluorescent probes. RESULTS CDN1163 (10 μM) itself suppressed cell proliferation, and did not alleviate CPA's inhibitory effect (and vice versa). Cell cycle was arrested at the G1 phase after CDN1163 treatment. CDN1163 treatment caused a slow yet persistent cytosolic [Ca2+] elevation partly due to Ca2+ release from an internal store other than the CPA-sensitive endoplasmic reticulum (ER). Treatment with CDN1163 for 3 h raised mitochondrial Ca2+ level and such increase was suppressed by MCU-i4 (an inhibitor of mitochondria Ca2+ uniporter, MCU), suggesting Ca2+ entered the mitochondrial matrix through MCU. Treatment of cells with CDN1163 up to 2 days resulted in mitochondrial hyperpolarization. CONCLUSION CDN1163 caused internal Ca2+ leak, cytosolic Ca2+ overload, mitochondrial Ca2+ elevation and hyperpolarization, cell cycle arrest and cell growth inhibition.
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Affiliation(s)
- Yi-Ping Huang
- Department of Physiology, China Medical University, Taichung 40402, Taiwan
| | - Wen-Wei Huang
- Department of Internal Medicine, Gastroenterology and Hepatology Section, An Nan Hospital, China Medical University, Tainan, Taiwan
| | - Kun-Feng Tsai
- Department of Internal Medicine, Gastroenterology and Hepatology Section, An Nan Hospital, China Medical University, Tainan, Taiwan; Department of Medical Sciences Industry, Chang Jung Christian University, Tainan, Taiwan
| | - Lian-Ru Shiao
- Department of Physiology, China Medical University, Taichung 40402, Taiwan
| | - Zih-He Yang
- Department of Physiology, China Medical University, Taichung 40402, Taiwan
| | - Shao-Yun Tseng
- Department of Physiology, China Medical University, Taichung 40402, Taiwan
| | - Yu-Hsien Lin
- Department of Physiology, China Medical University, Taichung 40402, Taiwan
| | - Cing-Yu Chen
- Department of Cosmetic Science, Providence University, Taichung, Taiwan; School of Pharmacy, China Medical University, Taichung, Taiwan
| | - Paul Chan
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Yuk-Man Leung
- Department of Physiology, China Medical University, Taichung 40402, Taiwan.
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Wu F, Chen ML, Huang WW, Liu J. [Treatment of trastuzumab-resistant HER2-positive metastatic breast cancer: a case report]. Zhonghua Zhong Liu Za Zhi 2022; 44:1390-1392. [PMID: 36575792 DOI: 10.3760/cma.j.cn112152-20220620-00437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- F Wu
- Department of Medical Oncology, Fujian Medical University Cancer Hospital, Fujian Cancer Hospital, Fuzhou 350000, China
| | - M L Chen
- Department of Medical Oncology, Fujian Medical University Cancer Hospital, Fujian Cancer Hospital, Fuzhou 350000, China
| | - W W Huang
- Department of Medical Oncology, Fujian Medical University Cancer Hospital, Fujian Cancer Hospital, Fuzhou 350000, China
| | - J Liu
- Department of Medical Oncology, Fujian Medical University Cancer Hospital, Fujian Cancer Hospital, Fuzhou 350000, China
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Hsu JT, Hsu PI, Shie CB, Chuah SK, Wu IT, Huang WW, Tang SY, Tsai KF, Kuo LF, Ghose S, Hsu JC, Shih CA. Comparison of the Efficacies of Direct-Acting Antiviral Treatment for HCV Infection in People Who Inject Drugs and Non-Drug Users. Medicina (Kaunas) 2022; 58:medicina58030436. [PMID: 35334612 PMCID: PMC8950806 DOI: 10.3390/medicina58030436] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/10/2022] [Accepted: 03/14/2022] [Indexed: 11/16/2022]
Abstract
Background and Objectives: Hepatitis C virus (HCV) is a major cause of liver disease worldwide. People who inject drugs (PWIDs) constitute the majority of patients with HCV infection in the United States and Central Asia. There are several obstacles to treating HCV infection in PWIDs because PWIDs are often accompanied by concurrent infection, low compliance, substance abuse, and risky behavior. The aim of the study is to compare the efficacies of direct-acting antiviral (DAA) therapy for HCV infection in PWIDs and those without opioid injection. Materials and Methods: In this retrospective cohort study, we included 53 PWIDs with HCV infections treated on site in a methadone program and 106 age- and sex-matched patients with HCV infections who had no history of opioid injection (ratio of 1:2). All eligible subjects received anti-HCV treatment by DAA agents in our hospital from March 2018 to December 2020. The charts of these patients were carefully reviewed for demographic data, types of DAA agents, and treatment outcomes. The primary outcome measure was sustained virological response (SVR). Results: PWIDs and non-drug users had different HCV genotype profiles (p = 0.013). The former had higher proportions of genotype 3 (18.9% vs. 7.5%) and genotype 6 (24.5% vs. 14.2%) than the latter. The two patient groups had comparable rates of complete drug refilling (100.0% vs. 91.1%) and frequency of loss to follow-up (3.8% vs. 0.9%). However, PWIDs had a lower SVR rate of DAA treatment than non-drug users (92.2% vs. 99.0%; p = 0.04). Further analysis showed that both human immunodeficiency virus (HIV) coinfection and history of PWID were risk factors associated with treatment failure. The subjects with coinfection with HIV had lower SVR rates than those without HIV infection (50.0% vs. 96.5%; p = 0.021). Conclusions: PWIDs with HCV infections have higher proportions of HCV genotype 3 and genotype 6 than non-drug users with infections. DAA therapy can achieve a high cure rate (>90%) for HCV infection in PWID, but its efficacy in PWID is lower than that in non-drug users.
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Affiliation(s)
- Jui-Ting Hsu
- Division of Gastroenterology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (J.-T.H.); (P.-I.H.); (C.-B.S.); (I.-T.W.); (W.-W.H.); (S.-Y.T.); (K.-F.T.); (L.-F.K.)
- Division of Hepato-Gastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan;
| | - Ping-I Hsu
- Division of Gastroenterology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (J.-T.H.); (P.-I.H.); (C.-B.S.); (I.-T.W.); (W.-W.H.); (S.-Y.T.); (K.-F.T.); (L.-F.K.)
| | - Chang-Bih Shie
- Division of Gastroenterology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (J.-T.H.); (P.-I.H.); (C.-B.S.); (I.-T.W.); (W.-W.H.); (S.-Y.T.); (K.-F.T.); (L.-F.K.)
| | - Seng-Kee Chuah
- Division of Hepato-Gastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan;
| | - I-Ting Wu
- Division of Gastroenterology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (J.-T.H.); (P.-I.H.); (C.-B.S.); (I.-T.W.); (W.-W.H.); (S.-Y.T.); (K.-F.T.); (L.-F.K.)
| | - Wen-Wei Huang
- Division of Gastroenterology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (J.-T.H.); (P.-I.H.); (C.-B.S.); (I.-T.W.); (W.-W.H.); (S.-Y.T.); (K.-F.T.); (L.-F.K.)
| | - Sheng-Yeh Tang
- Division of Gastroenterology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (J.-T.H.); (P.-I.H.); (C.-B.S.); (I.-T.W.); (W.-W.H.); (S.-Y.T.); (K.-F.T.); (L.-F.K.)
| | - Kun-Feng Tsai
- Division of Gastroenterology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (J.-T.H.); (P.-I.H.); (C.-B.S.); (I.-T.W.); (W.-W.H.); (S.-Y.T.); (K.-F.T.); (L.-F.K.)
| | - Li-Fu Kuo
- Division of Gastroenterology, Department of Internal Medicine, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (J.-T.H.); (P.-I.H.); (C.-B.S.); (I.-T.W.); (W.-W.H.); (S.-Y.T.); (K.-F.T.); (L.-F.K.)
| | - Supratip Ghose
- Department of Education and Research, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (S.G.); (J.-C.H.)
| | - Jui-Che Hsu
- Department of Education and Research, An Nan Hospital, China Medical University, Tainan 709, Taiwan; (S.G.); (J.-C.H.)
| | - Chih-An Shih
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Antai Medical Care Corporation, Antai Tian-Sheng Memorial Hospital, Pingtung County 928, Taiwan
- Department of Nursing, Meiho University, Pingtung County 912, Taiwan
- Correspondence: ; Tel.: +886-8-8329966
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Yue Y, Chen H, Wang L, Du XB, Gao XF, Liao J, Zhou R, Chen ZH, Chen YZ, Huang WW, Huang XF, Hu M, Zhao CL, Du CH, Deng LL, Liang X, Liu Z. [Analysis on the imported Coronavirus Disease 2019 related cluster epidemic in rural areas of Chengdu]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1240-1244. [PMID: 34706511 DOI: 10.3760/cma.j.cn112150-20210421-00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
An epidemiological investigation was carried out on a local cluster of outbreak caused by imported cases of Coronavirus Disease 2019 (COVID-19) in rural areas of Chengdu in December 2020, to find out the source of infection and the chain of transmission. According to Prevention and Control Protocol for COVID-19 (Version 7), field epidemiological investigation was adopted, combined with big data technology, video image investigation, gene sequencing and other methods to carry out investigation into COVID-19 cases and infections source tracing, analyze the epidemiological association, and map the chain of transmission. From December 7 to 17, 2020, 13 local COVID-19 confirmed cases and 1 asymptomatic case were diagnosed in Chengdu, of which 12 cases (85.71%) had a history of residence and activity in the village courtyard of Taiping (TP), Pidu (P) District, Chengdu. From November 8, 2020 to November 28, 2020, a group of inbound people form Nepal were transferred to the designated entry personnel quarantine hotel of P District which was adjacent to the TP village. During quarantine, there were 5 cases who tested positive for COVID-19. Through gene sequencing alignment, genes of local cases and Nepalese imported cases from the same period are homologous, all belong to the lineage of L2.2.3 (B.1.36 according to Pangolin lineage typing method). According to the results of field epidemiological investigation and gene sequencing analysis, the index case was most likely infected by contact with household waste of quarantine site. Under the situation of normalization prevention and control of COVID-19, sentinel monitoring of fever clinics in primary medical institutions is the key to early detection of the epidemic. The multi-department joint epidemiological investigation and the application of gene technology are the core links of the investigation and traceability of modern infectious diseases. The allocation of public health resources in rural areas needs to be strengthened. We need to improve the capacity for early surveillance and early warning of the epidemic in rural areas.
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Affiliation(s)
- Y Yue
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - H Chen
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - L Wang
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - X B Du
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - X F Gao
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - J Liao
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - R Zhou
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - Z H Chen
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - Y Z Chen
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - W W Huang
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - X F Huang
- Pidu District Center for Disease Control and Prevention, Chengdu 611730, China Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - M Hu
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - C L Zhao
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - C H Du
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - L L Deng
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - X Liang
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
| | - Z Liu
- Chengdu Center for Disease Control and Prevention, Chengdu 610041, China Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu 610041, China
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Pandher K, Porter CL, Patel HS, Huang WW, Feldman SR. Understanding views of patients on biologics for psoriasis amid the COVID-19 pandemic. J Eur Acad Dermatol Venereol 2020; 35:e249-e251. [PMID: 33332687 DOI: 10.1111/jdv.17091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K Pandher
- Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - C L Porter
- Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - H S Patel
- Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - W W Huang
- Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - S R Feldman
- Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA.,Department of Pathology, Wake Forest School of Medicine, Winston-Salem, NC, USA.,Department of Social Sciences & Health Policy, Wake Forest School of Medicine, Winston-Salem, NC, USA.,Department of Dermatology, University of Southern Denmark, Odense, Denmark
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Feldman SR, Huang WW. Evidence is lacking for or against palmoplantar pustulosis treatments: what does this mean for the clinician. Br J Dermatol 2020; 184:990. [PMID: 33249571 DOI: 10.1111/bjd.19658] [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] [Received: 10/15/2020] [Accepted: 10/17/2020] [Indexed: 11/29/2022]
Affiliation(s)
- S R Feldman
- Wake Forest School of Medicine, Department of Dermatology, Winston-Salem, NC, USA
| | - W W Huang
- Wake Forest School of Medicine, Department of Dermatology, Winston-Salem, NC, USA
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Huang WW, Ge XY, Huang Y, Chai XT, Zhang L, Zhang YX, Deng LN, Liu CQ, Xu H, Gao J. High-yield strain of fusidic acid obtained by atmospheric and room temperature plasma mutagenesis and the transcriptional changes involved in improving its production in fungus Fusidium coccineum. J Appl Microbiol 2020; 130:405-415. [PMID: 32734700 DOI: 10.1111/jam.14797] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 02/16/2020] [Revised: 06/01/2020] [Accepted: 07/21/2020] [Indexed: 11/28/2022]
Abstract
AIMS To obtain the high-yield strain of fusidic acid, which is produced from fungus Fusidium coccineum and is the only fusidane-type antibiotic that has been used clinically, and confirm the changes in the transcription levels involved in increasing its production. METHODS AND RESULTS By using the atmospheric and room temperature plasma mutagenesis technology, a high-yield mutant strain of fusidic acid-producing fungus F. coccineum was obtained. Using the genomic analysis of the original strain based on biosynthetic pathways of ergosterol and helvolic acid, we demonstrate that the pathway involved in the biosynthesis of 2,3-oxidosqualene from acetyl coenzyme A was shared by fusidic acid and ergosterol, and fusidic acid was finally synthesized by the catalysis of multiple cytochrome P450s and short-chain dehydrogenase/reductase from 2,3-oxidosqualene. Then, through the transcriptomic analysis of the original and mutagenized strain, it revealed that the proposed pathway from sucrose to fusidic acid was the most significantly up-regulated in the transcription levels of the mutant strain. CONCLUSIONS The changes in the transcription levels of fusidic acid during its biosynthesis might result in high-yield of fusidic acid in the mutant strain. This is the first report on the whole biosynthetic pathway of fusidic acid in F. coccineum. SIGNIFICANCE AND IMPACT OF THE STUDY This study obtain the genetic basis for the biosynthesis of fusidic acid which could be beneficial for the molecular modifications of F. coccineum to further increase its yield by fermentation in future, and established the foundation to reveal the mechanism of the high-yield of the mutant strain.
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Affiliation(s)
- W W Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China.,School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, China
| | - X Y Ge
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - Y Huang
- Joyang Laboratories, Yancheng, China
| | - X T Chai
- Joyang Laboratories, Yancheng, China
| | - L Zhang
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, China
| | - Y X Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - L N Deng
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, China
| | - C Q Liu
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, China
| | - H Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing, China
| | - J Gao
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, China
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Chiou WH, Hsu KH, Huang WW. Rh-Catalyzed Hydroformylation-Initiated Bicyclization: Construction of Azabicyclic Systems. ACS Omega 2020; 5:3717-3724. [PMID: 32118187 PMCID: PMC7045571 DOI: 10.1021/acsomega.9b04400] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 01/28/2020] [Indexed: 06/10/2023]
Abstract
Here, we describe the recent progress toward construction of 1-azabicyclic structures using a domino hydroformylation double cyclization strategy of an amide bearing the trisubstituted alkene functionality. The method provides a rapid and atom-economic access to alkaloid structures under mild conditions, especially for quinolizidine and pyrrolidine-fused azepane skeletons with yields up to 82% and good diastereoselectivity. Subsequent oxidative cleavage conditions are developed for the synthesis of Dendrobatid alkaloid epi-epiquinamide.
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Stiff KM, Glines KR, Muse ME, Cline A, Feldman SR, Jorizzo JL, Huang WW. Gentian violet for pyoderma gangrenosum: a retrospective chart review. Dermatol Online J 2020; 26:13030/qt3sm8q75w. [PMID: 32155035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 03/02/2020] [Indexed: 06/10/2023] Open
Abstract
Pyoderma gangrenosum is a rare autoinflammatory skin disease. Treatment is multifactorial, addressing inflammation, pain, underlying disease, if present, and the wound. Gentian violet has been used for hundreds of years in a variety of dermatologic conditions for its anti-inflammatory properties. This study aims to evaluate gentian violet in wound healing for pyoderma gangrenosum. We conducted a retrospective chart review of patients with pyoderma gangrenosum treated with gentian violet at the Wake Forest School of Medicine Department of Dermatology in the last 10 years. The primary outcome was clinical improvement. Of the 34 cases that met inclusion criteria, 70% improved with gentian violet, 24% had no documented change, 3% initially improved then worsened, and 3% had unclear results. Gentian violet is a safe and cheap treatment that may improve resolution of pyoderma gangrenosum lesions in addition to systemic therapy.
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Affiliation(s)
- K M Stiff
- Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC.
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Wang CP, Liao LJ, Chiang CJ, Hsu WL, Kang CJ, Wang CC, Chen PR, Chen TC, Huang WW, Chien CY. Patients with oral cancer do not undergo surgery as primary treatment: A population-based study in Taiwan. J Formos Med Assoc 2020; 119:392-398. [DOI: 10.1016/j.jfma.2019.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 05/25/2019] [Accepted: 06/19/2019] [Indexed: 12/17/2022] Open
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12
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Stiff KM, Glines KR, Muse ME, Cline A, Feldman SR, Jorizzo JL, Huang WW. Gentian violet for pyoderma gangrenosum: a retrospective chart review. Dermatol Online J 2020. [DOI: 10.5070/d3261047197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Wu Q, Hu LY, Huang WW, Xia L, Hong LF. [Acute ST-segment elevation myocardial infarction complicated with acute pulmonary embolism: a report of 2 cases]. Zhonghua Xin Xue Guan Bing Za Zhi 2019; 47:326-328. [PMID: 31060193 DOI: 10.3760/cma.j.issn.0253-3758.2019.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- Q Wu
- Department of Cardiology, Fifth Hospital in Wuhan, Wuhan 430050, China
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Tjahjono LA, Cline A, Huang WW, Feldman SR. Use of absolute risk measurements in observational dermatology studies: important information for decision-making is frequently absent. Br J Dermatol 2018; 180:678-679. [PMID: 30328103 DOI: 10.1111/bjd.17266] [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: 11/30/2022]
Affiliation(s)
- L A Tjahjono
- Mayo Clinic School of Medicine, Rochester, MN, U.S.A
| | - A Cline
- Center for Dermatology Research, Department of Dermatology, Winston-Salem, NC, U.S.A
| | - W W Huang
- Center for Dermatology Research, Department of Dermatology, Winston-Salem, NC, U.S.A
| | - S R Feldman
- Center for Dermatology Research, Department of Dermatology, Winston-Salem, NC, U.S.A.,Department of Pathology, Winston-Salem, NC, U.S.A.,Division of Public Health Sciences - Wake Forest School of Medicine, Winston-Salem, NC, U.S.A
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Affiliation(s)
- D N Dorrell
- Department of Dermatology, Center for Dermatology Research, Wake Forest School of Medicine, Winston-Salem, NC, U.S.A
| | - W W Huang
- Department of Dermatology, Center for Dermatology Research, Wake Forest School of Medicine, Winston-Salem, NC, U.S.A
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Hsieh TC, Huang WW, Lai CL, Tsao SM, Su CC. Diagnostic value of tumor markers in lung adenocarcinoma-associated cytologically negative pleural effusions. Cancer Cytopathol 2013; 121:483-8. [PMID: 23408492 DOI: 10.1002/cncy.21283] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [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: 10/24/2012] [Revised: 01/05/2013] [Accepted: 01/11/2013] [Indexed: 11/06/2022]
Abstract
BACKGROUND Cytology fails to detect neoplastic cells in approximately 40% to 50% of malignant pleural effusions (PEs), which commonly accompany lung adenocarcinomas. The diagnostic accuracy of various tumor markers in lung adenocarcinoma-associated cytologically negative pleural effusions (LAC-CNPEs) has been poor. The current study attempted to maximize diagnostic efforts in distinguishing LAC-CNPEs from benign PEs. METHODS PE samples were collected from 74 patients with lung adenocarcinoma with associated cytologically positive (41 patients) and negative (33 patients) PEs, and from 99 patients with benign conditions including tuberculosis (26 patients), pneumonia (28 patients), congestive heart failure (25 patients), and cirrhosis (20 patients). The authors evaluated the diagnostic sensitivity and optimal cutoff points for the tumor markers HER2/neu, CYFRA 21-1, and carcinoembryonic antigen (CEA) to distinguish LAC-CNPEs from benign PEs. RESULTS Mean levels of HER2/neu, CYRFA 21-1, and CEA were found to be significantly higher in LAC-CNPEs compared with benign PEs (P = .0050, P = .0039, and P < .0001, respectively). The cutoff points for HER2/neu, CYFRA 21-1, and CEA were optimally set at 3.6 ng/mL, 60 ng/mL, and 6.0 ng/mL, respectively. Their sensitivities ranged from 12.1%, to 30.3%, to 63.6%, respectively. CEA combined with CYFRA 21-1 increased diagnostic sensitivity to 66.7%. The false-positive rates of these markers in benign PEs were 6.1%, 2.0%, and 0%, respectively. CONCLUSIONS The combination of CEA with CYFRA 21-1 appears to provide the best differentiation between LAC-CNPEs and benign PEs to date using 2 tumor markers, and allows for the early diagnosis and early treatment of approximately two-thirds of affected patients.
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Lei F, Tang YL, Xie WG, Zhang Y, Zhang WD, Huang WW. [Treatment of facial pigmentation after burns with traditional Chinese medicine mask and skin care]. Zhonghua Shao Shang Za Zhi 2010; 26:420-424. [PMID: 21223651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To observe the effects of traditional Chinese medicine mask combined with skin care in the treatment of facial pigmentation after burns. METHODS Forty-one patients with facial pigmentation after burns hospitalized from January 2009 to June 2010 were enrolled and divided into treatment group (n = 26, odd number) and control group (n = 15, even number) according to the visiting order. After cleaning, massaging, and steam spraying to faces, patients in treatment and control groups were respectively treated with traditional Chinese medicine mask developed by physicians in our hospital and common commercial beauty mask. Masks were removed when they became completely dry. The treatment was repeated every other day. Ten times made up a course of treatment. Three consecutive courses were carried out on each patient. Before treatment and at the end of each course, the skin color differences were measured with Vancouver Pigmented Scar Scale; image gray scale value of pigmented skin was measured with image analysis technique. Satisfaction degree acknowledged by both patients and physicians were recorded at the end of each course; adverse effects were recorded; and the overall efficacy between two groups was compared. Data were processed with chi-square test or t test. RESULTS Skin color differences, image gray scale value of patients in treatment group were close to those in control group before treatment (with t value respectively 0.800 and 0.694, P values all above 0.05). Skin color differences, image gray scale value, and satisfaction degree acknowledged by both patients and physicians in treatment group were better than those in control group at the end of each course. At the end of the third course of treatment, the skin color differences in treatment and control groups scored 0.5 ± 0.4 and 1.1 ± 0.6, respectively, with image gray scale value of 55 ± 5 and 66 ± 6, respectively, which were statistically different from each other (with t value respectively 3.389 and 5.102, P values all below 0.01). The overall efficacy of the treatment group was 92.3%, which was much better than that of the control group (53.3%, χ(2) = 6.31, P < 0.05). No allergy caused by the traditional Chinese medicine mask was observed during the treatment. CONCLUSIONS The traditional Chinese medicine mask combined with skin care is effective for the treatment of facial pigmentation after burns.
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Affiliation(s)
- Fang Lei
- Institute of Burns, Wuhan City Hospital No.3 & Tongren Hospital of Wuhan University, Wuhan 430060, China
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Huang WW, Tsao SM, Lai CL, Su CC, Tseng CE. Diagnostic value of Her-2/neu, Cyfra 21-1, and carcinoembryonic antigen levels in malignant pleural effusions of lung adenocarcinoma. Pathology 2010; 42:224-8. [PMID: 20350214 DOI: 10.3109/00313021003631320] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIMS Cytology fails to detect neoplastic cells in 40-50% of cases of malignant pleural effusion, a condition that frequently accompanies lung adenocarcinoma. Published reports of diagnostic sensitivity of various tumour markers are inconsistent, and optimal cut-off points have not been determined. This study aimed to evaluate the ability of three markers to discriminate lung adenocarcinoma-associated malignant pleural effusion (LAC-MPE) from benign effusion. METHODS Pleural effusion samples were collected from 41 patients with LAC-MPE, and from 93 with various benign conditions. The diagnostic sensitivity and specificity for Her-2/neu, Cyfra 21-1, and carcinoembryonic antigen (CEA) were evaluated. Cut-off points for these markers are optimally set at 3.6 microg/L, 60 microg/L, and 6.0 microg/L, respectively. RESULTS Her-2/neu, Cyfra 21-1, and CEA vary in their diagnostic accuracy to differentiate LAC-MPE from benign pleural effusion: 79.85%, 88.81%, and 94.03%, respectively. CEA combined with Cyfra 21-1 increases diagnostic sensitivity to 97.6%, with a specificity of 91.4%. CONCLUSIONS With appropriate cut-off points, CEA currently provides the best diagnostic accuracy. Combining CEA with Cyfra 21-1 increases diagnostic sensitivity to nearly 100%. The results of the present study may help clinicians decide whether to obtain a cytological/histological specimen by invasive means to investigate a possible diagnosis of malignancy.
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Affiliation(s)
- Wen-Wei Huang
- Department of Family Medicine, Buddhist Dalin Tzu Chi General Hospital, Chiayi, Taiwan
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Huang HY, Li SH, Yu SC, Chou FF, Tzeng CC, Hu TH, Uen YH, Tian YF, Wang YH, Fang FM, Huang WW, Wei YC, Wu JM, Li CF. Homozygous deletion of MTAP gene as a poor prognosticator in gastrointestinal stromal tumors. Clin Cancer Res 2009; 15:6963-72. [PMID: 19887491 DOI: 10.1158/1078-0432.ccr-09-1511] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Chromosome 9 is frequently deleted in high-risk gastrointestinal stromal tumors (GISTs), whereas its specific tumor suppressor genes (TSGs) are less understood. We did an integrative study of MTAP gene at 9p21 to analyze its implication in GISTs. EXPERIMENTAL DESIGN To search TSGs on chromosome 9, we used ultrahigh-resolution array comparative genomic hybridization to profile DNA copy number alterations of 22 GISTs, with special attention to MTAP gene. MTAP immunoexpression was assessable for 306 independent GISTs on tissue microarrays, with 146 cases analyzed for MTAP homozygous deletion, 181 for mutations of KIT and PDGFRA receptor tyrosine kinase genes, and 7 for MTAP hypermethylation. RESULTS Array comparative genomic hybridization identified 11 candidate TSGs on 9p and six on 9q. MTAP and/or CDKN2A/CDKN2B at 9p21.3 were deleted in one intermediate-risk (11%) and seven high-risk (70%) GISTs with two cases homozygously codeleted at both loci. MTAP homozygous deletion, present in 25 of 146 cases, was highly associated with larger size and higher mitotic rate, Ki-67 index, and risk level (all P < 0.01) but not with receptor tyrosine kinase genotypes. Whereas MTAP homozygous deletion correlated with MTAP protein loss (P < 0.001), 7 of 30 GISTs without MTAP expression did not show homozygous deletion, including three MTAP-hypermethylated cases. MTAP homozygous deletion was univariately predictive of decreased disease-free survival (P < 0.0001) and remained multivariately independent (P = 0.0369, hazard ratio = 2.166), together with high-risk category (P < 0.0001), Ki-67 index >5% (P = 0.0106), and nongastric location (P = 0.0416). CONCLUSIONS MTAP homozygous deletion, the predominant mechanism to deplete protein expression, is present in 17% of GISTs. It correlates with important prognosticators and independently predicts worse outcomes, highlighting the role in disease progression.
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Affiliation(s)
- Hsuan-Ying Huang
- Departments of Pathology, Surgery, and Radiation Oncology, and Divisions of Oncology and Gastroenterology, Department of Internal Medicine, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Huang WW, Huang HY, Liao AC, Shiue YL, Tai HL, Lin CM, Wang YH, Lin CN, Shen KH, Li CF. Primary urothelial carcinoma of the upper tract: Important clinicopathological factors predicting bladder recurrence after surgical resection. Pathol Int 2009; 59:642-9. [DOI: 10.1111/j.1440-1827.2009.02420.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Li CF, Huang WW, Wu JM, Yu SC, Hu TH, Uen YH, Tian YF, Lin CN, Lu D, Fang FM, Huang HY. Heat shock protein 90 overexpression independently predicts inferior disease-free survival with differential expression of the alpha and beta isoforms in gastrointestinal stromal tumors. Clin Cancer Res 2009; 14:7822-31. [PMID: 19047110 DOI: 10.1158/1078-0432.ccr-08-1369] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Most gastrointestinal stromal tumors harbor a mutated KIT or PDGFRA receptor tyrosine kinase (RTK). Heat shock protein 90 (Hsp90) is a chaperone mediating the folding and stabilization of many oncoproteins, including KIT. An Hsp90 inhibitor, 17-AAG, can attenuate KIT activation and proliferation of gastrointestinal stromal tumor cell lines. We further evaluated Hsp90 immunoexpression and the difference between alpha and beta isoforms in gastrointestinal stromal tumor specimens. EXPERIMENTAL DESIGN Hsp90 immunostain was assessable in 306 cases on tissue microarrays of primary gastrointestinal stromal tumors and correlated with various variables and disease-free survival (DFS). RTK mutation variants, confirmed in 142 cases by sequencing with or without precedent denaturing high pressure liquid chromatography screening, were dichotomized into two prognostically different groups. Differential expression of transcript and protein isoforms was measured by real-time reverse transcription-PCR and Western blotting in 16 and 6 cases, respectively. RESULTS Hsp90 overexpression (55%) significantly correlated with larger size, nongastric location, higher mitotic count and NIH risk level, Ki-67 overexpression (all P < or = 0.001), and unfavorable RTK genotypes (P = 0.020). It strongly portended inferior DFS univariately (P < 0.0001) and remained independent in multivariate analysis (P = 0.031; risk ratio, 2.44), along with high-risk category, Ki-67 overexpression, and old age. For both mRNA and protein, Hsp90beta was more abundant than Hsp90alpha, whereas the latter was significantly higher in high-risk cases. CONCLUSIONS Hsp90 overexpression represents a poor prognosticator that correlates with several adverse parameters, highlighting its role in disease progression and alternative therapy for high-risk, imatinib-resistant gastrointestinal stromal tumors. Hsp90alpha seems more relevant to the intrinsic aggressiveness of gastrointestinal stromal tumors, albeit less abundant than Hsp90beta.
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Affiliation(s)
- Chien-Feng Li
- Department of Pathology, Chi-Mei Foundation Medical Center, Tainan, Taiwan
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Huang HY, West RB, Tzeng CC, van de Rijn M, Wang JW, Chou SC, Huang WW, Eng HL, Lin CN, Yu SC, Wu JM, Lu CC, Li CF. Immunohistochemical and Biogenetic Features of Diffuse-Type Tenosynovial Giant Cell Tumors: The Potential Roles of Cyclin A, P53, and Deletion of 15q in Sarcomatous Transformation. Clin Cancer Res 2008; 14:6023-32. [DOI: 10.1158/1078-0432.ccr-08-0252] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chou AL, Huang WW, Tsao SM, Li CT, Su CC. Human herpesvirus type 8 in patients with cirrhosis: correlation with sex, alcoholism, hepatitis B virus, disease severity, and thrombocytopenia. Am J Clin Pathol 2008; 130:231-7. [PMID: 18628092 DOI: 10.1309/4fmbn316n4792uq4] [Citation(s) in RCA: 8] [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: 10/21/2022] Open
Abstract
Immunologic abnormalities in patients with cirrhosis strongly correlate with severity of liver cirrhosis. The association between cirrhosis and human herpesvirus type 8 (HHV-8) infection is unclear. Plasma samples were obtained from 74 healthy control subjects and 59 patients with cirrhosis. The seropositive rates for HHV-8 antibodies in patients with cirrhosis (25/59 [42%]) were significantly higher than that in healthy control subjects (18/74 [24%]; P = .027), particularly in men (P = .027), patients with alcohol-related cirrhosis (P = .032), and patients with thrombocytopenia (P = .019) or Child-Pugh class C cirrhosis (P = .018) or both (P = .015), or hepatitis B virus (HBV) infection (P = .003). Antibody titers in seropositive patients also significantly exceeded those in healthy control subjects (P = .008). All subjects were negative for anti-HIV. In Taiwan, cirrhosis is associated with HHV-8 infection, particularly in men, patients with Child-Pugh class C cirrhosis and/or thrombocytopenia, and patients with alcohol- or HBV-related cirrhosis.
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Huang HY, Huang WW, Wu JM, Huang CK, Wang JW, Eng HL, Lin CN, Chou SC, Yu SC, Fang FM, Lee JC, Li CF. Flow Cytometric Analysis of DNA Ploidy and S-Phase Fraction in Primary Localized Myxofibrosarcoma: Correlations with Clinicopathological Factors, Skp2 Expression, and Patient Survival. Ann Surg Oncol 2008; 15:2239-49. [DOI: 10.1245/s10434-008-9968-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 04/06/2008] [Accepted: 04/30/2008] [Indexed: 11/18/2022]
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Xie WG, Huang WW, Yao SG, Wang DY, Wang MX, Zhu ZQ, Liu JF, Zhang W. [Rescue and treatment for the mass burn casualties of yellow phosphorus explosion]. Zhonghua Shao Shang Za Zhi 2008; 24:36-38. [PMID: 18512558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To summarize the characteristics and treatment of burn casualties of yellow phosphorus explosion, so as to share the experiences in emergency treatment. METHODS By analyzing the data related to this accident, the characteristics of the injury and experiences of treatment for mass burn casualties from yellow phosphorous explosion were summarized. RESULTS Eighty-one patients, 72 males and 9 females, were injured in a yellow phosphorus explosion. The mean age of the patients was 24 +/- 13 years old (5-42 y). The mean total burn surface area was (9 +/- 11)% [(0.4% - 70.0%))] TBSA, and the mean burn surface area of III degrees/IV degrees was (7 +/- 10)% [(0.4% - 60.0%)] TBSA. Most of the patients showed the symptoms and signs of phosphorus poisoning. Among all the patients, 27 cases (33.3%) showed hepatic dysfunction, 15 cases (18.5%) had renal dysfunction, 42cases (51.9%) showed electrolytes disorders. Among the 8 patients with burn surface area over 10% TBSA and less than 20% TBSA, high levels of cardiac enzymes were found in 6 cases, anaemia in 7 cases (3 with progressive anaemia), asphyxia occurred in 1 case 48 hours after burn, and in 1 case complicated with stress ulcer. Escharectomy and skin grafting were performed within four days after burn in 72 patients. All the patients survived, some of them showed impaired hand function and hypertrophic scar, and partial finger amputation was done in 3 patients. CONCLUSION Yellow phosphorus explosion produces deep burn injuries in surrounding people especially in exposed parts such as head, hand and so on. Adequate organization of medical resources for emergency treatment, early debridement, and accelerating excretion of phosphorus are the key points for the successful rescue of mass casualties.
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Affiliation(s)
- Wei-Guo Xie
- Department of Burns, the Third Hospital of Wuhan, Wuhan 430060, PR China
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Huang WW, Perera S, Studenski S, VanSwearingen J. USING PHYSICAL PERFORMANCE MEASURES TO PREDICT THE ONSET OF BASIC ADL DISABILITIES IN COMMUNITY-DWELLING OLDER ADULTS. J Geriatr Phys Ther 2007. [DOI: 10.1519/00139143-200712000-00014] [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: 11/08/2022]
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Su CC, Huang WW, Tsao SM, Lai CL, Tseng CE. DIAGNOSTIC ACCURACY AND CUTOFF POINTS OF HER-2/NEU, CYFRA 21-1, AND CEA IN LUNG ADENOCARCINOMA-ASSOCIATED MALIGNANT PLEURAL EFFUSIONS. Chest 2007. [DOI: 10.1378/chest.132.4_meetingabstracts.470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Huang HY, Li CF, Huang WW, Hu TH, Lin CN, Uen YH, Hsiung CY, Lu D. A modification of NIH consensus criteria to better distinguish the highly lethal subset of primary localized gastrointestinal stromal tumors: a subdivision of the original high-risk group on the basis of outcome. Surgery 2007; 141:748-56. [PMID: 17560251 DOI: 10.1016/j.surg.2007.01.024] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2006] [Revised: 01/03/2007] [Accepted: 01/07/2007] [Indexed: 02/07/2023]
Abstract
BACKGROUND By reappraising the National Institutes of Health (NIH) consensus criteria, we worked on establishing a modified scheme to identify highly lethal gastrointestinal stromal tumors (GISTs), which have an imperative demand for sequencing analysis to assess the suitability of an adjuvant imatinib trial. METHODS Clinicopathologic features, including NIH and modified schemes, were retrospectively analyzed for 289 patients with localized GISTs. We combined the very low/low-risk GISTs into a single "risk level I" group (<or=5 cm, <5/50 high power fields [HPFs]) and redesignated the intermediate-risk GISTs as "risk level II" (either <5 cm, 6 to 10/50 HPFs or 5 to 10 cm, <5/50 HPFs). The GISTs of "risk level IV" group were >5 cm and >10/50 HPF, with the rest of high-risk GISTs defined as "risk level III." RESULTS The cumulative 5-year rate of disease-specific survival (DSS) for all 289 patients was 82%, and the DSS rates for patients with GISTs classified as risk levels I to IV were 100%, 96%, 67%, and 25% at 5 years, respectively. The prognostic differences were striking between the risk level II and III groups (P < .0001) and between the risk level III and IV groups (P = .0002). The higher risk level of our scheme represented the strongest independent adverse factor (risk ratio [RR] = 11.299 for risk level III; RR = 33.815 for risk level IV; P < .0001), followed by mixed/epithelioid histology (RR = 2.837, P = .003) and older age (>or=70 years, RR = 1.955, P = .044). CONCLUSIONS Remarkable prognostic heterogeneity exists in the high-risk category of the NIH scheme, which is not as effective as the modified criteria in identifying highly lethal GISTs that we classified as risk level IV.
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Affiliation(s)
- Hsuan-Ying Huang
- Department of Pathology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung
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Huang WW, Zhou FS, Bushnell DM, Diakite C, Yang XH. Cultural adaptation and application of the IBS-QOL in China: a disease-specific quality-of-life questionnaire. Qual Life Res 2007; 16:991-6. [PMID: 17440830 DOI: 10.1007/s11136-006-9141-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2006] [Accepted: 10/13/2006] [Indexed: 12/18/2022]
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a chronic and episodic illness characterized by altered bowel habits and associated abdominal pain. At present, IBS is one of the most common functional gastrointestinal and motility disorders affecting countries around the world. Surveys have found that patients with IBS have a significantly lower health-related quality of life. OBJECTIVES The aim of this study was to translate and examine the validity of the Irritable Bowel Syndrome-Quality of Life questionnaire (IBS-QOL) in patients suffering from IBS in China. METHODS A structured procedure was used for the translation and cultural adaptation of the original English IBS-QOL into Chinese. The questionnaire was administered to 73 clinical patients with IBS and 70 healthy individuals. Psychometric testing for reliability, validity and responsiveness followed standardized procedures. Test-retest reliability (10-20 hours) was assessed using the clinical patients. Follow-up (4 weeks) was collected for 61 clinical patients. All enrolled patients also completed the Short Form-36 Health Survey (SF-36) at the baseline visit. Responsiveness to treatment (Venlafaxine and traditional Chinese herbal medicine) was assessed by one-way ANOVA methods. RESULTS The average length of time required to complete the questionnaire was short (5.63 min for IBS patients and 5.54 min for healthy subjects by self-administration). Internal consistency (Cronbach's alpha) values ranged from 0.722 to 0.914 for the Chinese IBS-QOL subscales and test-retest reliability coefficients were higher than 0.920 on all subscales. The convergent and discriminate validity results comparing the Chinese translation of the IBS-QOL overall score and the SF-36 subscales confirmed our predicted hypotheses. The Chinese IBS-QOL scores are more highly correlated with social functioning, vitality and general health (SF-36) and show weaker associations with physical functioning, role physical, mental health, and bodily pain (SF-36). The Chinese translation of the IBS-QOL was responsive to treatment. CONCLUSION In general, the Chinese translation of the IBS-QOL, after cultural adaptation and revision, possesses good reliability, validity and responsiveness. It is a reliable and valid instrument to assess the quality of life in Chinese patients suffering from IBS and is an appropriate measure to use in further clinical trials or for related research projects in China.
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Affiliation(s)
- Wen-Wei Huang
- Piwei Institute, Guangzhou University of Chinese Medicine, 12#, Jichang Road, Guangzhou City, Guangdong Province 510405, China.
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Li SH, Li CF, Sung MT, Eng HL, Hsiung CY, Huang WW, Lin CN, Yu SC, Huang HY. Skp2 is an independent prognosticator of gallbladder carcinoma among p27(Kip1)-interacting cell cycle regulators: an immunohistochemical study of 62 cases by tissue microarray. Mod Pathol 2007; 20:497-507. [PMID: 17384652 DOI: 10.1038/modpathol.3800762] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Despite improvement in surgical techniques, prognosis of gallbladder carcinoma remains poor. It is desirable to identify prognostic biomarkers to aid in the development of targeted therapeutic strategies. Two SCF(Skp2) ubiquitin ligase-related proteins, Skp2 and cyclin-dependent kinase subunit 1 (Cks1), are involved in post-transcriptional degradation of p27(Kip1) tumor suppressor, which inhibits both cdk2/cyclin E and cdk2/cyclin A complexes and thus prevents transition to the S phase. However, the prognostic utility of p27(Kip1)-interacting cell cycle regulators has not been systematically assessed in gallbladder carcinoma. Immunohistochemistry was performed for p27(Kip1), Skp2, Cks1, cyclin E, cyclin A, and Ki-67 in tissue microarrays of 62 gallbladder carcinomas with follow-up. The data were correlated with clinicopathological features and overall survival (OS). The cumulative OS rate for all 62 cases was 42.9% at 3 years. Aberrant labeling indices (LIs) of p27(Kip1) (<20%), cyclin E (>or=5%), cyclin A (>or=5%), Cks1 (>or=40%), and Skp2 (>or=10%) were identified in 29, 58, 66, 21, and 57% of gallbladder carcinomas, respectively. By log-rank tests, downregulation of p27(Kip1) (P=0.0319) and high LIs of Skp2 (P=0.0006), Cks1 (P=0.0460), cyclin E (P=0.0070), and Ki-67 (P=0.0037) were predictive of inferior OS. Furthermore, the combined expression status of Skp2 and Ki-67 robustly defined three prognostically different groups (P=0.0001). In multivariate comparison, Skp2 overexpression represented the strongest independent adverse prognosticator (P=0.004, risk ratio (RR): 5.538), followed by Ki-67 LI >or=50% (P=0.016, RR: 3.254) and American Joint Committee on Cancer stages II-IV (P=0.013, RR: 3.163). In conclusion, aberrations of p27(Kip1)-interacting cell cycle regulators are common in gallbladder carcinomas. Skp2 overexpression is highly representative of biological aggressiveness and independently associated with poor OS, suggesting that it is a promising novel target for therapeutic intervention in aggressive cases. The combined assessment of Skp2 and Ki-67 LIs effectively risk-stratifies gallbladder carcinomas with different prognosis, which is worth being prospectively validated in future study.
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Affiliation(s)
- Shau-Hsuan Li
- Division of Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Huang HY, Huang WW, Lin CN, Eng HL, Li SH, Li CF, Lu D, Yu SC, Hsiung CY. Immunohistochemical expression of p16INK4A, Ki-67, and Mcm2 proteins in gastrointestinal stromal tumors: prognostic implications and correlations with risk stratification of NIH consensus criteria. Ann Surg Oncol 2006; 13:1633-44. [PMID: 17013685 DOI: 10.1245/s10434-006-9188-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2006] [Revised: 06/05/2006] [Accepted: 06/05/2006] [Indexed: 12/11/2022]
Abstract
BACKGROUND Inactivation of p16(INK4A) promotes G1/S progression of cell cycle. Minichromosome maintenance protein-2 (Mcm2), a novel cell proliferation marker, is known to better correlate with clinical outcomes than Ki-67 in many carcinomas. Since gastrointestinal stromal tumors (GISTs) sometimes remains challenging in prognostication, we analyzed the utility of these three markers in GISTs. METHODS Immunohistochemistry was performed in tissue microarrays of 277 primary GISTs and correlated with NIH consensus criteria and clinical outcomes. RESULTS The increment of NIH risk levels significantly correlated with increasing labeling indices (LI) of both Ki-67 (P <.001) and Mcm2 (P <.001) and loss of p16(INK4A) expression (P <.035). However, the latter aberration did occur in 23% of very low/low-risk GISTs. The relationship between Mcm2 and Ki-67 LIs could be modeled as linear (P <.001, r = 0.697), while Mcm2 LI was considerably higher (P <.001) with a stepwise escalation related to risk levels. Ki-67 LI >5% (P <.0001) and Mcm2 LI >10% (P <.0001) were strongly predictive of inferior disease-specific survival (DSS), while aberrant loss of p16(INK4A) only reached a trend (P = .0954). In multivariate analyses, independent adverse factors of DSS were high-risk category (RR = 16.93, P <.0001), metastatic disease (RR = 4.12, P = .0015), Ki-67 LI >5% (RR = 3.55, P = .001), and presence of epithelioid histology (RR = 2.17, P = .0308). CONCLUSIONS Prognostic efficacy of NIH consensus criteria is substantiated. P16(INK4A) deregulation can occur early in GIST tumorigenesis and marginally correlates with patient survival. Despite Ki-67 LI being an independent prognosticator, simultaneous detection of Mcm2 is recommended as a prognostic adjunct of GISTs, given its better sensitivity and stepwise escalation with increasing risk levels.
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Affiliation(s)
- Hsuan-Ying Huang
- Department of Pathology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Huang WW, Yang JS, Lin CF, Ho WJ, Lee MR. Pycnogenol induces differentiation and apoptosis in human promyeloid leukemia HL-60 cells. Leuk Res 2005; 29:685-92. [PMID: 15863210 DOI: 10.1016/j.leukres.2004.10.006] [Citation(s) in RCA: 26] [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] [Received: 05/21/2004] [Accepted: 10/26/2004] [Indexed: 10/25/2022]
Abstract
Pycnogenol, rich of many phytochemicals of medical value, is a commercialized nutrient supplement extracted from the bark of European coastal pine. In this study, we investigated the anti-tumor effects of Pycnogenol on HL-60, U937 and K562 human leukemia cell lines. We found that Pycnogenol inhibited cell proliferation dose- and time-dependently, and the IC(50)s of Pycnogenol on HL-60, U937 and K562 cells were 150, 40 and 100 microg/ml, respectively. When HL-60 cells were incubated with low concentrations of Pycnogenol (50, 100 and 125 microg/ml) for 24 h, a prominent G0/G1 arrest was observed, followed by gradual accumulation of sub-G0/G1 nuclei. At 48 h of treatment, 50-70% of HL-60 cells differentiated, as evidenced by morphological changes, NBT reduction, induction of NSE activity, and increases of cell surface expression of CD11b. However, results from Annexin V/PI staining, DAPI staining and DNA fragmentation assay indicated that Pycnogenol induced HL-60, U937 and K562 cell apoptosis at their respective IC(50)s after 24 h of treatments. Pretreatment of z-DEVD-fmk, a caspase-3 specific inhibitor, not only decreased caspase-3 activity but also reduced the percentage of apoptotic cells induced by Pycnogenol. This indicated that caspase-3 activation was involved in Pycnogenol induced-apoptosis. In conclusion, Pycnogenol induced differentiation and apoptosis in leukemia cells. Our data suggest that Pycnogenol could serve as a potent cancer chemopreventive or chemotherapeutic agent for human leukemia.
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Affiliation(s)
- W W Huang
- Department of Biology, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan, ROC
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Zhu RX, Hoffman KA, Potts R, Deng CL, Pan YX, Guo B, Shi CD, Guo ZT, Yuan BY, Hou YM, Huang WW. Earliest presence of humans in northeast Asia. Nature 2001; 413:413-7. [PMID: 11574886 DOI: 10.1038/35096551] [Citation(s) in RCA: 154] [Impact Index Per Article: 6.7] [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: 11/09/2022]
Abstract
The timing of the earliest habitation and oldest stone technologies in different regions of the world remains a contentious topic in the study of human evolution. Here we contribute to this debate with detailed magnetostratigraphic results on two exposed parallel sections of lacustrine sediments at Xiaochangliang in the Nihewan Basin, north China; these results place stringent controls on the age of Palaeolithic stone artifacts that were originally reported over two decades ago. Our palaeomagnetic findings indicate that the artifact layer resides in a reverse polarity magnetozone bounded by the Olduvai and Jaramillo subchrons. Coupled with an estimated rate of sedimentation, these findings constrain the layer's age to roughly 1.36 million years ago. This result represents the age of the oldest known stone assemblage comprising recognizable types of Palaeolithic tool in east Asia, and the earliest definite occupation in this region as far north as 40 degrees N.
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Affiliation(s)
- R X Zhu
- Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China.
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Abstract
The enzyme xanthine oxidase catalyses the oxidation of hypoxanthine to xanthine and then to uric acid, which plays a crucial role in gout. A total of 122 traditional Chinese medicinal plants, selected according to the clinical efficacy and prescription frequency for the treatment of gout and other hyperuricemia-related disorders, have been evaluated for the enzyme inhibitory activity. Among the 122 methanol extracts derived from these species, 69 were shown to be inhibitory at 100 microg/ml, with 29 having greater than 50% inhibition. As to the equal amount of water extracts, 40 were disclosed to be active at 100 microg/ml, with 13 possessing more than 50% inhibition. At 50 microg/ml, 58 methanol and 24 water extracts exhibited inhibitory activity, with 15 of the former and two of the latter showing greater than 50% inhibition. The most active was the methanol extract of the twig of Cinnamomum cassia (Lauraceae) (IC(50), 18 microg/ml), which was followed immediately by those of the flower of Chrysanthemum indicum (Asteraceae) (IC(50), 22 microg/ml) and the leaves of Lycopus europaeus (Lamiatae) (IC(50), 26 microg/ml). Among the water extracts, the strongest inhibition of the enzyme was observed with that of the rhizome of Polygonum cuspidatum (Polygonaceae) (IC(50), 38 microg/ml). The IC(50) value of allopurinol used as a positive control was 1.06 microg/ml. The study demonstrated that the effects for these medicinal plants used for the gout treatment were based, at least in part, on the xanthine oxidase inhibitory action.
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Affiliation(s)
- L D Kong
- Institute of Functional Biomolecule, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 210093, Nanjing, People's Republic of China
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Allen AD, Cheng B, Fenwick MH, Huang WW, Missiha S, Tahmassebi D, Tidwell TT. Radical Additions of TEMPO to Ketenes: Correlation of Free Radical and Nucleophilic Reactivity. Org Lett 1999; 1:693-6. [PMID: 16118865 DOI: 10.1021/ol990628i] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Tetramethylpiperidinyloxy (TEMPO, TO*) reacts with a variety of ketenes R1R2C=C=O by rate-limiting attack on carbonyl carbon to give the 1,2-bis(adducts) R1R2C(OT)CO2T. The alpha,beta-unsaturated ketenes (E)-PhCH=CHCH=C=O (8b) and PhC=CCH=C=O (8c) give the 1,4-bis(adducts) PhCH(OT)CH=CHCO2T and PhC(OT)=C=CHCO2T. The ketenes may be generated in situ for these reactions in the presence of TEMPO by either dehydrochlorination of R1R2CHCOCl with Et3N or Wolff rearrangement. Ketenes PhCH=C=O (8a), 8b, and 8c had not previously been observed as long-lived species at room temperature, but when formed by photochemical Wolff rearrangement, these could be characterized in solution by conventional IR spectroscopy and used for kinetic studies for reaction with TEMPO using UV detection. The reactions of six ketenes with TEMPO in hydrocarbon solvents follow second-order kinetics, with a range of 2.5 x 10(5) in the rate constants, which are correlated with unit slope with the corresponding rate constants for hydration.
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Affiliation(s)
- A D Allen
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3H6
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Huang WW, Garcia-Zepeda EA, Sauty A, Oettgen HC, Rothenberg ME, Luster AD. Molecular and biological characterization of the murine leukotriene B4 receptor expressed on eosinophils. J Exp Med 1998; 188:1063-74. [PMID: 9743525 PMCID: PMC2212531 DOI: 10.1084/jem.188.6.1063] [Citation(s) in RCA: 124] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The movement of leukocytes into tissues is regulated by the local production of chemical mediators collectively referred to as chemoattractants. Although chemoattractants constitute a diverse array of molecules, including proteins, peptides, and lipids, they all appear to signal leukocytes through a related family of seven transmembrane-spanning G protein-coupled receptors. The eosinophil is a potent proinflammatory cell that is attracted into tissues during allergic inflammation, parasitic infection, and certain malignancies. Since the molecular mechanisms controlling eosinophil recruitment are incompletely understood, we performed a degenerate polymerase chain reaction on cDNA isolated from murine eosinophils to identify novel chemoattractant receptors. We report the isolation of a cDNA that encodes a 351-amino acid glycoprotein that is 78% identical to a human gene that has been reported to be a purinoceptor (P2Y7) and a leukotriene B4 (LTB4) receptor (BLTR). Chinese hamster ovary (CHO) cells transfected with this cDNA specifically bound [3H]LTB4 with a dissociation constant of 0.6 +/- 0.1 nM. Furthermore, LTB4 induced a dose-dependent intracellular calcium flux in transfected CHO cells. In contrast, [35S]dATP did not specifically bind to these transfectants. This mRNA was expressed at high levels in interleukin 5-exposed eosinophils, elicited peritoneal macrophages and neutrophils, and to a lesser extent interferon gamma stimulated macrophages. Low levels of expression were detected in the lung, lymph node, and spleen of unchallenged mice. Western blot analysis detected the mBLTR protein in murine eosinophils and alveolar macrophages as well as human eosinophils. In addition, elevated levels of mBLTR mRNA were found in the lungs of mice in a murine model of allergic pulmonary inflammation in a time course consistent with the influx of eosinophils. Our findings indicate that this murine receptor is an LTB4 receptor that is highly expressed on activated leukocytes, including eosinophils, and may play an important role in mediating eosinophil recruitment into inflammatory foci.
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MESH Headings
- Amino Acid Sequence
- Animals
- CHO Cells
- Calcium/metabolism
- Cell Line
- Chemotactic Factors, Eosinophil/physiology
- Cloning, Molecular
- Cricetinae
- DNA, Complementary/analysis
- Disease Models, Animal
- Eosinophils/metabolism
- Eosinophils/pathology
- Female
- Humans
- Leukotriene B4/metabolism
- Macrophages, Alveolar/metabolism
- Mice
- Mice, Inbred Strains
- Mice, Transgenic
- Molecular Sequence Data
- Plasmids/genetics
- Protein Binding
- Protein Biosynthesis
- RNA, Messenger/biosynthesis
- Receptors, Leukotriene B4/biosynthesis
- Receptors, Leukotriene B4/blood
- Receptors, Leukotriene B4/chemistry
- Receptors, Leukotriene B4/genetics
- Receptors, Leukotriene B4/physiology
- Respiratory Hypersensitivity/immunology
- Respiratory Hypersensitivity/metabolism
- Respiratory Hypersensitivity/pathology
- Transfection
- Tumor Cells, Cultured
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Affiliation(s)
- W W Huang
- Infectious Disease Unit, AIDS Research Center, Department of Medicine, Massachusetts General Hospital, Charlestown 02129, USA
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Abstract
The cytotoxic T cell line CTLL-2 and the T helper cell line HT2 proliferate in response to interleukin 2 (IL-2) or IL-4 without requiring stimulation by antigen through the T cell receptor and therefore lend themselves for studies of IL-2- and IL-4-dependent proliferation and signalling through their cognate receptors. Here we have used CTLL-2 and HT2 cells to investigate the effect of the inflammatory mediator prostaglandin E2 (PGE2) on IL-2- and IL-4-dependent proliferation. PGE2 inhibited IL-2- as well as IL-4-dependent proliferation of both CTLL-2 and HT2 cells, with IL-4-dependent proliferation being more sensitive than IL-2-dependent proliferation and CTLL-2 cells being more sensitive than HT2 cells. A quantitative dose-effect analysis revealed a two-step increase of inhibition (around 10(-10) M and 10(-5) M PGE2) for all combinations of cells and cytokines approaching 100% at high concentrations of PGE2. The data suggest that even in cases where synthesis of IL-2 and IL-4 is differentially affected by PGE2, IL-2- and IL-4-dependent T cells may still be similarly sensitive to PGE2 by way of their cytokine responsiveness. Furthermore, the effects of PGE2 may be mediated by more than one functional binding site or receptor subtype. PGE2 levels are an important consideration when CTLL-2 and HT2 cells are used for the measurement of IL-4 and IL-2.
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Affiliation(s)
- T Gurlo
- University of Southern California, School of Pharmacy, Los Angeles 90033, USA
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Fang SW, Huang WW, Chen LH. [Contamination of seafood by Vibrio parahaemolyticus in Taiwan]. Zhonghua Min Guo Wei Sheng Wu Ji Mian Yi Xue Za Zhi 1987; 20:140-7. [PMID: 3652783] [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: 01/06/2023]
Abstract
From October 1984 to September 1985, a total of 770 seafood samples, collected from the retail markets of 8 coastal cities in Taiwan, were tested for the contamination of Vibrio parahaemolyticus. The results showed that 352 samples (45.7%) were contaminated by V. parahaemolyticus. The detection frequencies of various samples were as follows: 40.0% fish samples, 22.3% fish fillets, 44.4% shrimps and 47.8% crabs of the crustacea group, 68.7% bivalve shellfish and 31.9% non-bivalve shellfish of the mollusca group. Bivalve shellfish samples showed the highest detection frequency and counts. By the analysis of variance, cities and sample items affected the detection frequency and counts of V. parahaemolyticus. Positive statistical correlation was found between the counts of V. parahaemolyticus and temperature variation in some cities, whereas the detection frequency of V. parahaemolyticus was not relative to the temperature variation in each city. 182 isolates from different types of seafood reacted with K antisera. Of those serotypes, K17 showed the highest detection frequency in the serological test. All of our isolates showed negative reaction for the Kanagawa test.
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Affiliation(s)
- S W Fang
- Food and Drug Bureau, Department of Health, Taipei, ROC
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Wang ZW, Song XB, Huang WW, Tao LX, Xu JY. Investigation of experimental metastases in the lung by cast-scanning electron microscopy. Shi Yan Sheng Wu Xue Bao 1986; 19:6-79. [PMID: 3739503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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