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Chen HC, Pan YL, Chen Y, Yang TH, Hsu ET, Huang YT, Chiang MH. Monoclonal Antibodies as a Therapeutic Strategy against Multidrug-Resistant Bacterial Infections in a Post-COVID-19 Era. Life (Basel) 2024; 14:246. [PMID: 38398755 PMCID: PMC10890110 DOI: 10.3390/life14020246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/23/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
The development of severe multidrug-resistant bacterial infections has recently intensified because of the COVID-19 pandemic. According to the guidelines issued by the World Health Organization (WHO), routine antibiotic administration is not recommended for patients with supposed or confirmed mild SARS-CoV-2 infection or pneumonia, unless bacterial infection is clinically suspected. However, recent studies have pointed out that the proportion of non-essential antibiotic use in patients infected with SARS-CoV-2 remains high. Therefore, the silent pandemic of antibiotic resistance remains a pressing issue regardless of the present threats presented by the COVID-19 pandemic. To prevent or delay entry into the postulated post-antibiotic era, the long-term advocacy for the rational use of antibiotics, the optimization of infection control procedures, and the development of new antibacterial agents and vaccines should be underscored as vital practices of the antibacterial toolbox. Recently, the development of vaccines and monoclonal antibodies has gradually received attention following the advancement of biotechnology as well as enhanced drug discovery and development in cancer research. Although decent progress has been made in laboratory-based research and promising results have been obtained following clinical trials of some of these products, challenges still exist in their widespread clinical applications. This article describes the current advantages of antibacterial monoclonal antibodies, the development of associated clinical trials, and some perceived future perspectives and challenges. Further, we anticipate the development of more therapeutic agents to combat drug-resistant bacterial infections as well as to increase the resilience of current or novel agents/strategies.
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Affiliation(s)
- Hsiao-Chun Chen
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei City 11490, Taiwan;
| | - Yu-Ling Pan
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei City 11490, Taiwan; (Y.-L.P.); (Y.C.)
| | - Ying Chen
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei City 11490, Taiwan; (Y.-L.P.); (Y.C.)
| | - Tsung-Hsuan Yang
- School of Nursing, National Defense Medical Center, Taipei City 11490, Taiwan;
| | - Erh-Tung Hsu
- School of Medicine, National Defense Medical Center, Taipei City 11490, Taiwan; (E.-T.H.); (Y.-T.H.)
| | - Yu-Ting Huang
- School of Medicine, National Defense Medical Center, Taipei City 11490, Taiwan; (E.-T.H.); (Y.-T.H.)
| | - Ming-Hsien Chiang
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei City 11490, Taiwan; (Y.-L.P.); (Y.C.)
- mProbe Taiwan Inc., Taipei City 105037, Taiwan
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Stice SP, Jan HH, Chen HC, Nwosu L, Shin GY, Weaver S, Coutinho T, Kvitko BH, Baltrus DA. Pantailocins: phage-derived bacteriocins from Pantoea ananatis and Pantoea stewartii subsp. indologenes. Appl Environ Microbiol 2023; 89:e0092923. [PMID: 37982620 PMCID: PMC10870728 DOI: 10.1128/aem.00929-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 09/15/2023] [Indexed: 11/21/2023] Open
Abstract
IMPORTANCE Phage-derived bacteriocins (tailocins) are ribosomally synthesized structures produced by bacteria in order to provide advantages against competing strains under natural conditions. Tailocins are highly specific in their target range and have proven to be effective for the prevention and/or treatment of bacterial diseases under clinical and agricultural settings. We describe the discovery and characterization of a new tailocin locus encoded within genomes of Pantoea ananatis and Pantoea stewartii subsp. indologenes, which may enable the development of tailocins as preventative treatments against phytopathogenic infection by these species.
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Affiliation(s)
- Shaun P. Stice
- Department of Plant Pathology, University of Georgia, Athens, Georgia, USA
| | - Hsiao-Hsuan Jan
- Department of Plant Pathology, University of Georgia, Athens, Georgia, USA
| | - Hsiao-Chun Chen
- Department of Plant Pathology, University of Georgia, Athens, Georgia, USA
| | - Linda Nwosu
- Department of Plant Pathology, University of Georgia, Athens, Georgia, USA
| | - Gi Yoon Shin
- Department of Plant Pathology, University of Georgia, Athens, Georgia, USA
| | - Savannah Weaver
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, Arizona, USA
| | - Teresa Coutinho
- The Plant Center, University of Georgia, Athens, Georgia, USA
| | - Brian H. Kvitko
- Department of Plant Pathology, University of Georgia, Athens, Georgia, USA
- Department of Biochemistry, Genetics, and Microbiology, University of Pretoria, Pretoria, South Africa
| | - David A. Baltrus
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, Arizona, USA
- School of Plant Sciences, University of Arizona, Tucson, Arizona, USA
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Yan TT, Xiao R, Wang Y, Lin GA, Zheng Y, Zhao H, Li WJ, Shang XZ, Meng JS, Hu DS, Li S, Wang C, Lin ZC, Chen HC, Zhao DY, Tang D. [A prospective study on application of human umbilical cord mesenchymal stem cells combined with autologous Meek microskin transplantation in patients with extensive burns]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:114-121. [PMID: 36878520 DOI: 10.3760/cma.j.cn501225-20220728-00319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Objective: To investigate the effects of human umbilical cord mesenchymal stem cells (hUCMSCs) combined with autologous Meek microskin transplantation on patients with extensive burns. Methods: The prospective self-controlled study was conducted. From May 2019 to June 2022, 16 patients with extensive burns admitted to the 990th Hospital of PLA Joint Logistics Support Force met the inclusion criteria, while 3 patients were excluded according to the exclusion criteria, and 13 patients were finally selected, including 10 males and 3 females, aged 24-61 (42±13) years. A total of 20 trial areas (40 wounds, with area of 10 cm×10 cm in each wound) were selected. Two adjacent wounds in each trial area were divided into hUCMSC+gel group applied with hyaluronic acid gel containing hUCMSCs and gel only group applied with hyaluronic acid gel only according to the random number table, with 20 wounds in each group. Afterwards the wounds in two groups were transplanted with autologous Meek microskin grafts with an extension ratio of 1∶6. In 2, 3, and 4 weeks post operation, the wound healing was observed, the wound healing rate was calculated, and the wound healing time was recorded. The specimen of wound secretion was collected for microorganism culture if there was purulent secretion on the wound post operation. In 3, 6, and 12 months post operation, the scar hyperplasia in wound was assessed using the Vancouver scar scale (VSS). In 3 months post operation, the wound tissue was collected for hematoxylin-eosin (HE) staining to observe the morphological changes and for immunohistochemical staining to observe the positive expressions of Ki67 and vimentin and to count the number of positive cells. Data were statistically analyzed with paired samples t test and Bonferronni correction. Results: In 2, 3, and 4 weeks post operation, the wound healing rates in hUCMSC+gel group were (80±11)%, (84±12)%, and (92±9)%, respectively, which were significantly higher than (67±18)%, (74±21)%, and (84±16)% in gel only group (with t values of 4.01, 3.52, and 3.66, respectively, P<0.05). The wound healing time in hUCMSC+gel group was (31±11) d, which was significantly shorter than (36±13) d in gel only group (t=-3.68, P<0.05). The microbiological culture of the postoperative wound secretion specimens from the adjacent wounds in 2 groups was identical, with negative results in 4 trial areas and positive results in 16 trial areas. In 3, 6, and 12 months post operation, the VSS scores of wounds in gel only group were 7.8±1.9, 6.7±2.1, and 5.4±1.6, which were significantly higher than 6.8±1.8, 5.6±1.6, and 4.0±1.4 in hUCMSC+gel group, respectively (with t values of -4.79, -4.37, and -5.47, respectively, P<0.05). In 3 months post operation, HE staining showed an increase in epidermal layer thickness and epidermal crest in wound in hUCMSC+gel group compared with those in gel only group, and immunohistochemical staining showed a significant increase in the number of Ki67 positive cells in wound in hUCMSC+gel group compared with those in gel only group (t=4.39, P<0.05), with no statistically significant difference in the number of vimentin positive cells in wound between the 2 groups (P>0.05). Conclusions: The application of hyaluronic acid gel containing hUCMSCs to the wound is simple to perform and is therefore a preferable route. Topical application of hUCMSCs can promote healing of the autologous Meek microskin grafted area in patients with extensive burns, shorten wound healing time, and alleviate scar hyperplasia. The above effects may be related to the increased epidermal thickness and epidermal crest, and active cell proliferation.
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Affiliation(s)
- T T Yan
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - R Xiao
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - Y Wang
- Beijing Zhongjing Hi-Tech Biotechnology Co., Beijing 100089, China
| | - G A Lin
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - Y Zheng
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - H Zhao
- Henan Cellular Industry Technology Research Institute Co., Zhengzhou 450121, China
| | - W J Li
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - X Z Shang
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - J S Meng
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - D S Hu
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - S Li
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - C Wang
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - Z C Lin
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - H C Chen
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - D Y Zhao
- Military Burn Center, the 990th Hospital of PLA Joint Logistics Support Force, Zhumadian 463002, China
| | - D Tang
- Department of Burns & Plastic Surgery, PLA General Hospital of Central Theater Command, Wuhan 430012, China
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Lovelace AH, Chen HC, Lee S, Soufi Z, Bota P, Preston GM, Kvitko BH. RpoS contributes in a host-dependent manner to Salmonella colonization of the leaf apoplast during plant disease. Front Microbiol 2022; 13:999183. [PMID: 36425046 PMCID: PMC9679226 DOI: 10.3389/fmicb.2022.999183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/21/2022] [Indexed: 11/04/2023] Open
Abstract
Contaminated fresh produce has been routinely linked to outbreaks of Salmonellosis. Multiple studies have identified Salmonella enterica factors associated with successful colonization of diverse plant niches and tissues. It has also been well documented that S. enterica can benefit from the conditions generated during plant disease by host-compatible plant pathogens. In this study, we compared the capacity of two common S. enterica research strains, 14028s and LT2 (strain DM10000) to opportunistically colonize the leaf apoplast of two model plant hosts Arabidopsis thaliana and Nicotiana benthamiana during disease. While S. enterica 14028s benefited from co-colonization with plant-pathogenic Pseudomonas syringae in both plant hosts, S. enterica LT2 was unable to benefit from Pto co-colonization in N. benthamiana. Counterintuitively, LT2 grew more rapidly in ex planta N. benthamiana apoplastic wash fluid with a distinctly pronounced biphasic growth curve in comparison with 14028s. Using allelic exchange, we demonstrated that both the N. benthamiana infection-depedent colonization and apoplastic wash fluid growth phenotypes of LT2 were associated with mutations in the S. enterica rpoS stress-response sigma factor gene. Mutations of S. enterica rpoS have been previously shown to decrease tolerance to oxidative stress and alter metabolic regulation. We identified rpoS-dependent alterations in the utilization of L-malic acid, an abundant carbon source in N. benthamiana apoplastic wash fluid. We also present data consistent with higher relative basal reactive oxygen species (ROS) in N. benthamiana leaves than in A. thaliana leaves. The differences in basal ROS may explain the host-dependent disease co-colonization defect of the rpoS-mutated LT2 strain. Our results indicate that the conducive environment generated by pathogen modulation of the apoplast niche can vary from hosts to host even with a common disease-compatible pathogen.
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Affiliation(s)
- Amelia H. Lovelace
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Hsiao-Chun Chen
- Department of Plant Pathology, University of Georgia, Athens, GA, United States
| | - Sangwook Lee
- Department of Microbiology, University of Georgia, Athens, GA, United States
| | - Ziad Soufi
- Department of Plant Sciences, University of Oxford, Oxford, United Kingdom
| | - Pedro Bota
- Department of Plant Sciences, University of Oxford, Oxford, United Kingdom
| | - Gail M. Preston
- Department of Plant Sciences, University of Oxford, Oxford, United Kingdom
| | - Brian H. Kvitko
- Department of Plant Pathology, University of Georgia, Athens, GA, United States
- The Plant Center, University of Georgia, Athens, GA, United States
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Dong LJ, Chen HC, Ma YL, Xing W. [Detection and clinical application of HIV-1 DNA]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1685-1690. [PMID: 36456505 DOI: 10.3760/cma.j.cn112338-20211230-01036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The persistence of the HIV-1 reservoir is still the main obstacle to the cure of HIV. In clinical research, reliable biomarkers are needed to label it. HIV-1 DNA can be continuously detected in the HIV-1 reservoir. It has significant application value in diagnosing HIV-1 infection, the timing of antiretroviral therapy, the prediction of virus rebound, and monitoring treatment effects. The detection technology based on polymerase chain reaction (PCR) is the most commonly used HIV-1 DNA detection method in clinical practice. The continuous innovation and advancement of technology can accurately detect the total, integrated, and unintegrated HIV-1 DNA in infected cells using qualitative or quantitative methods. Different forms of HIV-1 DNA in infected cells have been increasingly reported as biomarkers in HIV infection monitoring and AIDS treatment-related research. This article reviews the progress of HIV-1 DNA.
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Affiliation(s)
- L J Dong
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - H C Chen
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Y L Ma
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Wenge Xing
- National HIV/AIDS Reference Laboratory, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Elia R, Chen HC, Di Taranto G, Ciudad P, Lo Torto F, Nacchiero E, Giudice G, Maruccia M. GASTROEPIPLOIC VASCULARIZED LYMPH NODE TRANSFER FOR EXTREMITIES’ LYMPHEDEMA: IS TWO BETTER THAN ONE? A RETROSPECTIVE CASE-CONTROL STUDY. J Plast Reconstr Aesthet Surg 2022; 75:3129-3137. [DOI: 10.1016/j.bjps.2022.04.105] [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] [Received: 04/24/2020] [Revised: 02/27/2022] [Accepted: 04/12/2022] [Indexed: 10/18/2022]
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Li DF, Chen HC, Jin XM, Dai J, Zeng ZJ, Yang M, Sun PY, Dong LJ, Han Y, Ma YL, Chen M, Song ZZ. [HCV and Treponema pallidum infection status in HIV/AIDS cases in Yunnan province, January-June, 2020]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1983-1988. [PMID: 34818844 DOI: 10.3760/cma.j.cn112338-20210517-00406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the infection status of HCV and Treponema pallidum (TP) in HIV/AIDS cases in Yunnan province,and identify the risk factors. Methods: Between January 1 and June 30 in 2020,a cross-sectional survey was conducted in Yunnan. Two enzyme-linked immunosorbent assay (ELISA) kits were used to detect anti-HCV, the positive results of both two kits indicated HCV infection. ELISA and syphilis toluidine red untreated serum test were applied to identify TP infection. Both Excel 2016 and SPSS 22.0 software were used for statistical analysis, and logistic regression model was conducted to identify the relevant factors of HCV and TP infection. Results: A total of 5 922 HIV/AIDS cases were included in this study, the infection rates of HCV and TP were 6.5% (383/5 922) and 5.8% (344/5 922) respectively. The co-infection rate of HCV and TP was 0.4% (22/5 922). The risk for HCV infection in HIV/AIDS cases was higher in younger age groups compared with age group ≥50 years (15-19:aOR=3.53;20-29:aOR=3.02;30-39:aOR=2.91;40-49:aOR=3.61), in males than in females (aOR=2.31), in the married and unmarried than in the divorced or widowed (married:aOR=1.61;unmarried:aOR=1.63), in other ethnic groups than in Han ethnic group (aOR=1.70), in people with lower education level than in people with education level of college and above (primary school degree and below:aOR=4.69;middle school:aOR=3.96), in people living in the central and western Yunnan than in people living in eastern Yunnan (central Yunnan:aOR=2.46; western Yunnan:aOR=7.08), in injection drug users than in MSM (aOR=131.08). The risk of TP infection in HIV/AIDS cases was higher in people with education level of college and primary school than in middle school degree (primary school and below:aOR=1.73;college and above:aOR=1.77), in people with other occupations than in farmers (aOR=1.39), in people living in eastern Yunnan than in people living in western Yunnan (aOR=1.75); in MSM than in people with heterosex (aOR=9.75). Conclusions: A certain proportion of HIV/AIDS cases reported between January and June in 2020 in Yunnan were co-infected with HCV and TP, many factors were associated with the co-infection. It is suggested to strengthen HCV and TP tests in HIV/AIDS cases and conduct active treatment of the co-infection.
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Affiliation(s)
- D F Li
- School of Public Health, Kunming Medical University, Kunming 650500, China
| | - H C Chen
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - X M Jin
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - J Dai
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Z J Zeng
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - M Yang
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - P Y Sun
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - L J Dong
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Y Han
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Y L Ma
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - M Chen
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Z Z Song
- Institute for AIDS/STD Prevention and Control, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
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Zhao M, Tyson C, Chen HC, Paudel S, Gitaitis R, Kvitko B, Dutta B. Pseudomonas alliivorans sp. nov., a plant-pathogenic bacterium isolated from onion foliage in Georgia, USA. Syst Appl Microbiol 2021; 45:126278. [PMID: 34800898 DOI: 10.1016/j.syapm.2021.126278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 10/19/2021] [Accepted: 10/22/2021] [Indexed: 10/20/2022]
Abstract
This study provides a taxonomic characterization of three bacterial strains isolated from onion seedlings in Georgia USA. Yellow-colored colonies were isolated, and a diffusible fluorescent pigment was visible under ultraviolet light on King's medium B. Preliminary analysis of the basic phenotype tests and 16S rRNA gene sequence analysis indicated the onion strains were closely related to Pseudomonas viridiflava with the highest similarity to P. viridiflava DSM 6694T (99.6%). The phylogenomic analyses based on whole genome sequences showed that the onion strains formed a separate monophyletic clade from other species with P. viridiflava as the closest neighbor. When the onion strains and the P. viridiflava type strain were compared, the average nucleotide identity values was 91.6%. Additionally, the digital DNA-DNA hybridization values of the onion strains were 45.8% or less when compared to the type strains of their close relatives, including P. viridiflava. In addition, biochemical, physiological features, and cellular fatty acid compositions were determined for a polyphasic taxonomic analysis. The results supported that the three onion strains represented a novel Pseudomonas species. We propose a new species as Pseudomonas alliivorans sp. nov., with 20GA0068T (=LMG 32210T = CFBP 8885T) as the type strain. The DNA G + C content of the strain 20GA0068T is 59.1 mol%.
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Affiliation(s)
- Mei Zhao
- Department of Plant Pathology, University of Georgia, Tifton, GA 31793, USA
| | - Chris Tyson
- Vidalia Onion and Vegetable Research Center, University of Georgia, Lyons, GA 30436, USA
| | - Hsiao-Chun Chen
- Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA
| | - Sujan Paudel
- Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA
| | - Ron Gitaitis
- Department of Plant Pathology, University of Georgia, Tifton, GA 31793, USA
| | - Brian Kvitko
- Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA
| | - Bhabesh Dutta
- Department of Plant Pathology, University of Georgia, Tifton, GA 31793, USA.
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Zhao M, Koirala S, Chen HC, Gitaitis R, Kvitko B, Dutta B. Pseudomonas capsici sp. nov., a plant-pathogenic bacterium isolated from pepper leaf in Georgia, USA. Int J Syst Evol Microbiol 2021; 71. [PMID: 34424837 PMCID: PMC8513616 DOI: 10.1099/ijsem.0.004971] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three phytopathogenic bacterial strains (Pc19-1T, Pc19-2 and Pc19-3) were isolated from seedlings displaying water-soaked, dark brown-to-black, necrotic lesions on pepper (Capsicum annuum) leaves in Georgia, USA. Upon isolation on King’s medium B, light cream-coloured colonies were observed and a diffusible fluorescent pigment was visible under ultraviolet light. Analysis of their 16S rRNA gene sequences showed that they belonged to the genus Pseudomonas, with the highest similarity to Pseudomonas cichorii ATCC 10857T (99.7 %). The fatty acid analysis revealed that the majority of the fatty acids were summed feature 3 (C16 : 1 ω7c/C16 : 1 ω6c), C16 : 0 and summed feature 8 (C18 : 1 ω7c/C18 : 1 ω6c). Phylogenomic analyses based on whole genome sequences demonstrated that the pepper strains belonged to the Pseudomonas syringae complex with P. cichorii as their closest neighbour, and formed a separate monophyletic clade from other species. Between the pepper strains and P. cichorii, the average nucleotide identity values were 91.3 %. Furthermore, the digital DNA–DNA hybridization values of the pepper strains when compared to their closest relatives, including P. cichorii, were 45.2 % or less. In addition, biochemical and physiological features were examined in this study and the results indicate that the pepper strains represent a novel Pseudomonas species. Therefore, we propose a new species Pseudomonas capsici sp. nov., with Pc19-1T (=CFBP 8884T=LMG 32209T) as the type strain. The DNA G+C content of the strain Pc19-1T is 58.4 mol%.
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Affiliation(s)
- Mei Zhao
- Department of Plant Pathology, University of Georgia, Tifton GA 31793, USA
| | - Santosh Koirala
- Department of Plant Pathology, University of Georgia, Tifton GA 31793, USA
| | - Hsiao-Chun Chen
- Department of Plant Pathology, University of Georgia, Athens GA 30602, USA
| | - Ronald Gitaitis
- Department of Plant Pathology, University of Georgia, Tifton GA 31793, USA
| | - Brian Kvitko
- Department of Plant Pathology, University of Georgia, Athens GA 30602, USA
| | - Bhabesh Dutta
- Department of Plant Pathology, University of Georgia, Tifton GA 31793, USA
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de Sire A, Losco L, Cigna E, Lippi L, Gimigliano F, Gennari A, Cisari C, Chen HC, Fusco N, Invernizzi M. Three-dimensional laser scanning as a reliable and reproducible diagnostic tool in breast cancer related lymphedema rehabilitation: a proof-of-principle study. Eur Rev Med Pharmacol Sci 2021; 24:4476-4485. [PMID: 32373985 DOI: 10.26355/eurrev_202004_21030] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE In this study, we aimed to assess the reproducibility and reliability of a three-dimensional laser scanner (3DLS) in measuring the upper limb volume of BRCL women undergoing a 2-week complete decongestive therapy (CDT). PATIENTS AND METHODS 3DLS and CM were used to measure the upper limb volume in a cohort of BCRL women before (T0) and after (T1) a 2-week CDT. We evaluated: a) correlation between 3DLS and CM at both time points; b) level of agreement and the consistency of the different measurements at both time points; c) correlation between the inter-rater operator analysis in terms of total limb volume differences before and after rehabilitative treatment of both circumferential method and laser scanning 3D in breast cancer related lymphedema patients. RESULTS Taken together, 43 BCRL women (age 51.1 ± 5.4 years) were included. Both 3DLS and CM showed a significant inter and intra-operator correlation in the arm volume measurement at both time-points (T0: r2=0.99, p<0.0001; T1: r2=0.99, p<0.0001). 3DLS showed a strong correlation with CM (r2=0.99, p<0.0001) in terms of volume measurement and provided greater intra-operator correlation (r2=0.92 vs. 0.62) in detecting volume variations after the treatment (T1-T0). CONCLUSIONS 3DLS confirmed to be highly sensitive, cheap and easy-to-use in the evaluation of the upper limb volume in BCRL women before and after a rehabilitative treatment. These findings suggest that augmented reality technologies might be very useful in oncological rehabilitation.
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Affiliation(s)
- A de Sire
- Department of Health Sciences, Physical and Rehabilitative Medicine, University of Eastern Piedmont, "A. Avogadro", Novara, Italy.
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Chen HC, Peng SJ, Gao HM, Su WT, Mei Y, Yi GL. [Determination of n-butyl alcohol in urine by headspace solid-phase microextraction coupled with gas chromatography]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 38:932-935. [PMID: 33406560 DOI: 10.3760/cma.j.cn121094-20200102-00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish a headspace solid phase microextraction-gas chromatography method for determination of n-Butyl alcohol in urine. Methods: In October 2019, the n-butyl alcohol in urine was extracted with a polydimethylsiloxane/divinylbenzene (PDMS/DVB) solid-phase microextraction head. The conditions of salt amount, extraction temperature, extraction time and desorption time were optimized. The separation was performed on HP-5 (30 m×0.32 mm×0.25 μm) capillary column and detected with flame ionization detector. The quantification was based on the external standard curve. Results: The linear relationship of n-butyl alcohol in urine was good in the range of 0.04-3.00 mg/L, the correlation coefficient was 0.999, the detection limit of the method was 0.04 mg/L, the recovery was 77.4%-102.8%, the intra-run precision was 3.67%-8.11%, and the inter-assay precision was 4.94%-6.90%. Conclusion: The method has simple operation, high concentration efficiency and high sensitivity, and it is suitable for the determination of n-butyl alcohol in urine of occupational exposure to n-butyl alcohol.
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Affiliation(s)
- H C Chen
- Key Laboratory of Occupational Hazards Identification and Control in Hubei Province, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - S J Peng
- Key Laboratory of Occupational Hazards Identification and Control in Hubei Province, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - H M Gao
- Key Laboratory of Occupational Hazards Identification and Control in Hubei Province, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - W T Su
- Key Laboratory of Occupational Hazards Identification and Control in Hubei Province, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Y Mei
- Key Laboratory of Occupational Hazards Identification and Control in Hubei Province, School of Public Health, Wuhan University of Science and Technology, Wuhan 430065, China
| | - G L Yi
- Wuhan Prevention and Treatment Center for Occupational Disease, Wuhan 430015, China
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12
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Chen HC, Chang S, Hsiung MC, Kwang WK, Tsao TP, Yang YN. Timely diagnosis of primary pericardial mesothelioma. Echocardiography 2020; 37:1877-1879. [PMID: 33047830 DOI: 10.1111/echo.14888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 08/20/2020] [Accepted: 09/22/2020] [Indexed: 11/29/2022] Open
Affiliation(s)
| | - Shihi Chang
- Plastic surgery hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | | | | | - Tien-Ping Tsao
- Heart center, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Yung-Nien Yang
- Heart center, Cheng Hsin General Hospital, Taipei, Taiwan
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Dai J, Sun PY, Chen HC, Dong LJ, Jin XM, Li YF, Wang J, Yang CJ, Yang M, Zeng ZJ, Ma YL, Chen M. [Characteristics of HIV-1 genotype and drug resistance among men who have sex with men in Kunming, 2018]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1335-1340. [PMID: 32867446 DOI: 10.3760/cma.j.cn112338-20191107-00792] [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 understand the characteristics of HIV-1 genotypes and drug resistance among men who have sex with men in Kunming in 2018. Methods: A total of 193 plasma samples were collected from the newly reported HIV-1 infected MSM in Kunming from January to December 2018. Viral RNA was extracted, and the gag, pol, env gene segments were amplified by nested PCR. HIV-1 genotypes and drug resistance were also analyzed. Subsequently, the evolutionary characteristics of CRF55_01B and CRF68_01B among MSM in Kunming were analyzed by Bayesian Markov Chain Monte Carlo method. Results: Multiple HIV-1 genotypes were identified among these 193 samples, including CRF07_BC (39.4%, 76/193), CRF01_AE (34.2%, 66/193), unique recombinant forms (URFs) (20.2%, 39/193), CRF08_BC (3.1%, 6/193), CRF55_01B (1.6%, 3/193), subtype B (1.0%, 2/193) and CRF68_01B (0.5%, 1/193). Results from the Bayesian evolutionary analysis showed that CRF55_01B started to spread locally after being imported from other provinces, while CRF68_01B was likely to have been brought in from the eastern provinces of China. Prevalence of HIV-1 drug resistant strains was 2.6%(5/190) before antiviral treatment, with mutation rates resistant to non-nucleoside reverse transcriptase inhibitors being the highest (2.1%, 4/190) among MSM in Kunming, 2018. Conclusion: The diversity of HIV-1 was increasing among MSM in Kunming. Although the resistance rate on pretreatment drug was relatively low, the emergence of multiple resistant strains to first-line antiviral drugs posed a challenge to antiretroviral therapy, in Kunming.
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Affiliation(s)
- J Dai
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - P Y Sun
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - H C Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - L J Dong
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - X M Jin
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Y F Li
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - J Wang
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - C J Yang
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - M Yang
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Z J Zeng
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - Y L Ma
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
| | - M Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming 650022, China
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Li SY, Dai J, Sun PY, Li YF, Dong LJ, Chen HC, Jin XM, Yang M, Ma YL, Chen M. [Analysis on characteristics of HIV-1 molecular networks in men who have sex with men in Kunming, 2016-2018]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1121-1125. [PMID: 32741182 DOI: 10.3760/cma.j.cn112338-20190916-00676] [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 analyze the characteristics of HIV-1 molecular network in men who have sex with men (MSM) from 2016 to 2018 in Kunming, Yunnan province, explore the risk factors associated with HIV-1 transmission network and provide evidence for the effective implementation of intervention. Methods: A total of 540 samples of newly reported HIV-1 positive MSM were consecutively collected in Kunming from 2016 to 2018, the pol gene fragments were amplified by nested polymerase chain reaction (PCR). HIV-1 molecular networks were constructed according to the bootstrap value of the maximum likelihood evolutionary tree over 95% and the genetic distance less than 3%. The factors associated with the subjects entering network and network growth were further analyzed. Results: Among 459 successfully sequenced samples, seven genotypes were found, in which CRF07_BC (49.2%, 226/459) and CRF01_AE (40.3%, 185/459 ) were predominant. Other genotypes included URFs (4.8%, 22/459), CRF08_BC (3.1%, 14/459), CRF55_01B (1.7%, 8/459), B (0.7%, 3/459) and CRF68_01B (0.2%, 1/459). A total of 163 sequences entered the network, with an entry rate of 35.5%(163/459), forming 56 clusters with the number of individuals in the cluster was between 2 and 13. The analysis of the factors associated with entering network showed that the MSM who married and had multiple homosexual partners were more likely to be found in HIV-1 molecular networks. Multivariate logistic regression analysis showed that the number of sexual partners was the factor for the growth of HIV-1 molecular network. According to the criteria for the emergence of three or more newly reported cases in every year, six transmission clusters were judged as active transmission clusters, in which MSM who were not Kunming natives, had sexually transmitted diseases (STD), were divorced and students were the key targets of intervention. Conclusions: HIV-1 genotypes in MSM in Kunming were becoming complex, the risk factors associated with transmission networks in MSM in Kunming included being married and having multiple partners, the intervention targets in active transmission clusters included MSM who were not Kunming natives, had STD, were divorced and students. This study provided the basis for applying HIV-1 molecular networks to real-time intervention in this population.
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Affiliation(s)
- S Y Li
- School of Public Health, Kunming Medical University, Kunming 650500, China
| | - J Dai
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
| | - P Y Sun
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
| | - Y F Li
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
| | - L J Dong
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
| | - H C Chen
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
| | - X M Jin
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
| | - M Yang
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
| | - Y L Ma
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
| | - M Chen
- Institute for AIDS/STDs Prevention and Control, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022,China
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Liakos D, Sofianos C, Dower DRW, Ciudad P, Chen HC. The deltopectoral flap in the management of tracheostomal stenosis post laryngectomy and radiotherapy. S AFR J SURG 2020; 58:43. [PMID: 32243115] [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: 06/11/2023]
Abstract
BACKGROUND Tracheostomal stenosis is a distressing complication with a high incidence rate post laryngectomy. We aimed to assess the deltopectoral flap (DPF) for tracheostomal stenosis correction in irradiated patients. METHODS Six patients with tracheostomal stenosis, 3 of whom developed restenosis after prior use of local flaps, were managed using a DPF to reconstruct the defect following a vertical incision release of the stenotic band down to the inferior tracheal cartilaginous ring. Healing absence of restenosis, alleviation of the symptoms of difficulty in breathing and clearance of secretions were considered a successful composite endpoint. RESULTS Over a median follow-up period of 11 months all patients maintained patency, and symptoms of difficulty in breathing and clearing of secretions were alleviated. CONCLUSION The deltopectoral flap is a rapid, reliable flap for the management of tracheostomal stenosis in irradiated patients. It brings well-vascularised tissue into the site of reconstruction and, in the short term, stomal patency and symptom relief were achieved.
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Affiliation(s)
- D Liakos
- Department of Reconstructive Microsurgery, China Medical University Hospital, Taiwan and Department of Plastic and Reconstructive Surgery, University of the Witwatersrand, South Africa
| | - C Sofianos
- Department of Plastic and Reconstructive Surgery, University of the Witwatersrand, South Africa
| | - D R W Dower
- Department of Reconstructive Microsurgery, China Medical University Hospital, Taiwan
| | - P Ciudad
- Department of Reconstructive Microsurgery, China Medical University Hospital, Taiwan
| | - H C Chen
- Department of Reconstructive Microsurgery, China Medical University Hospital, Taiwan and International Medical Service Center, China Medical University Hospital, Taiwan
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Liakos D, Sorianos C, Dower DRW, Ciudad P, Chen HC. The deltopectoral flap in the management of tracheostomal stenosis post laryngectomy and radiotherapy. S AFR J SURG 2020. [DOI: 10.17159/2078-5151/2020/v58n1a2877] [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: 11/05/2022]
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Bolletta A, Di Taranto G, Chen SH, Elia R, Amorosi V, Chan JCY, Chen HC. Surgical treatment of Milroy disease. J Surg Oncol 2019; 121:175-181. [DOI: 10.1002/jso.25583] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 05/21/2019] [Accepted: 05/21/2019] [Indexed: 12/21/2022]
Affiliation(s)
- A Bolletta
- Department of Plastic SurgeryChina Medical University Hospital Taichung Taiwan
- Department of Medical, Surgical, and Experimental SciencesPlastic Surgery Unit, University of SassariSassari Italy
| | - G Di Taranto
- Department of Plastic SurgeryChina Medical University Hospital Taichung Taiwan
- Department of Plastic and Reconstructive SurgerySapienza University of Rome, Umberto I University HospitalRome Italy
| | - SH Chen
- Department of Plastic SurgeryChang Gung Memorial HospitalTaipei Taiwan
| | - R Elia
- Department of Plastic SurgeryChina Medical University Hospital Taichung Taiwan
- Division of Plastic and Reconstructive Surgery, Department of Emergency and Organ TransplantationUniversity of BariBari Italy
| | - V Amorosi
- Department of Plastic SurgeryChina Medical University Hospital Taichung Taiwan
- Plastic Surgery Unit, Sant'Andrea Hospital, School of Medicine and PsychologySapienza University of RomeRome Italy
| | - J CY Chan
- Department of Plastic SurgeryChina Medical University Hospital Taichung Taiwan
| | - HC Chen
- Department of Plastic SurgeryChina Medical University Hospital Taichung Taiwan
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Niu S, Wang CX, Jia FJ, Jahejo AR, Li X, Ning GB, Zhang D, Ma HL, Hao WF, Gao WW, Zhao YJ, Gao SM, Li JH, Li GL, Yan F, Gao RK, Huo NR, Tian WX, Chen HC. The expression of prostaglandins-related genes in erythrocytes of broiler chicken responds to thiram-induced tibial dyschondroplasia and recombinant glutathione-S-transferase A3 protein. Res Vet Sci 2019; 124:112-117. [PMID: 30878632 DOI: 10.1016/j.rvsc.2019.03.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 02/26/2019] [Accepted: 03/07/2019] [Indexed: 02/06/2023]
Abstract
Tibial dyschondroplasia (TD) is a type of bone deformity found in fast-growing chickens, which induce inflammatory responses. Prostaglandins (PGs) implicate in bone formation and bone resorption, associated with inflammation in an autocrine/paracrine manner. This study used qRT-PCR and immunohistochemistry analysis to identify the expression patterns of PG-related genes in the erythrocytes of broiler chickens and explore the effects of thiram-induced TD and the recombinant glutathione-S-transferase A3 (rGSTA3) protein on the expression of PG-related genes: GSTA3, cyclooxygenase 2 (COX-2), prostaglandin D2 synthase (PTGDS), prostaglandin E synthase (PTGES), prostaglandin E2 receptor (PTGER) 3, PTGER4 and prostaglandin reductase 1 (PTGR1). Interestingly, the results showed that these seven PG-related genes expression was identified in the erythrocytes of broiler chicken, and thiram-induced TD suppressed the expression of these PG-related genes in the initial stage of TD and promoted their expression in TD recovery. These findings demonstrated that the immunoregulatory function of erythrocytes can be inhibited in the early stage of TD and promoted in the recovery stage by modulating the expression of PG-related genes. Further, the rGSTA3 protein can modulate the expression of PG-related genes in erythrocytes and participate in the recovery of TD.
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Affiliation(s)
- S Niu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - C X Wang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - F J Jia
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - A R Jahejo
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - X Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - G B Ning
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - D Zhang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - H L Ma
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - W F Hao
- Taiyuan Center for Disease Control and Prevention, Taiyuan 030024, China
| | - W W Gao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - Y J Zhao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - S M Gao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - J H Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - G L Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - F Yan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - R K Gao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - N R Huo
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - W X Tian
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China.
| | - H C Chen
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China; State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China.
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Chen M, Wang JB, Xing H, Ma YL, Yang J, Chen HC, Yao ST, Luo HB, Duan X, Wang YK, Duan S, Jia MH. [HIV-1 drug resistance transmission threshold survey in Dehong prefecture of Yunnan province, 2015]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 38:959-962. [PMID: 28738474 DOI: 10.3760/cma.j.issn.0254-6450.2017.07.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the HIV-1 drug resistance transmission level in HIV infected persons receiving no antiviral therapy in Dehong prefecture of Yunnan province in 2015. Methods: A total of 72 plasma samples were collected from recently reported HIV-infected persons aged 16-25 years in Dehong from January to July 2015 for drug resistance gene detection. Results: Forty eight samples were successfully sequenced and analyzed. Among them, 31.2% (15/48) were from Chinese, and 68.8% (33/48) were from Burmese. Based on pol sequences, HIV genotypes included URF (52.08%, 25/48), CRF01_AE (16.67%, 8/48), RF07_BC (10.42%, 5/48), subtype B (6.25%, 3/48), subtype C (6.25%, 3/48), CRF57_BC (6.25%, 3/48) and CRF08_BC (2.08%, 1/48). One drug resistant mutation site to non-nucleoside analog reverse transcriptase inhibitor (NNRTI) and two drug resistant mutation site to nucleoside analog reverse transcriptase inhibitor (NRTI) were detected in four sequences. Based on the statistical method of HIV drug resistance threshold survey, the prevalence of HIV-1 drug resistant strain was 5%-15%. Conclusions: The proportion of Burmese among newly reported HIV-infected individuals aged 16-25 years in Dehong in 2015 was higher. HIV-1 genetic diversity was found in Dehong. The prevalence of HIV-1 drug resistant strain had reached a moderate level in Dehong.
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Affiliation(s)
- M Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J B Wang
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - H Xing
- Division of Research on Virology and Immunology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Ma
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J Yang
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - H C Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - S T Yao
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - H B Luo
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - X Duan
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y K Wang
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - S Duan
- Department of AIDS/STDs Control and Prevention, Dehong Prefecture Center for Disease Control and Prevention, Mangshi 678400, China
| | - M H Jia
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
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Maruccia M, Elia R, Ciudad P, Nacchiero E, Nicoli F, Vestita M, Chen HC, Giudice G. Postmastectomy upper limb lymphedema: Combined vascularized lymph node transfer and scar release with fat graft expedites surgical and patients' related outcomes. A retrospective comparative study. J Plast Reconstr Aesthet Surg 2019; 72:892-901. [PMID: 30819649 DOI: 10.1016/j.bjps.2019.01.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [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: 05/22/2018] [Revised: 12/15/2018] [Accepted: 01/18/2019] [Indexed: 01/17/2023]
Abstract
INTRODUCTION Lymphedema resulting from breast cancer treatment is a chronic condition that can significantly compromise quality of life. Several works have documented the efficacy of vascularized lymph node flap transfer (VLNT) for the treatment of advanced-stage lymphedema. Given that the axillary scar may contribute to the patient's existing lymphedema, the authors assumed that combining VLNT and scar release with fat graft could be an effective strategy of treatment. The purpose of this study is to compare the efficacy in the reduction of limb circumference and health-related quality of life between a combined strategy, namely, VLN transfer (VLNT) and axillary scar release with fat grafting, and only VLNT for patients affected by postmastectomy upper limb lymphedema. The idea. MATERIALS AND METHODS All patients with stage II and III breast cancer-related lymphedema operated between January 2012 and January 2016 were retrospectively identified, and only those treated by combined VLNT and scar release (Group A) or only VLNT (Group B) were included. The outcomes were assessed clinically by limb circumference measurement and radiologically by lymphoscintigraphy. Lymphedema-related quality of life was evaluated preoperatively and at 1 year follow-up through the LYMQOL questionnaire. RESULTS Thirty-nine patients met inclusion criteria (Group A = 18; Group B = 21). Mean follow-up was 29 months for Group A and 32 months for Group B. Flap survival rate was 100%, with no donor site morbidity in all patients. A statistically significant difference between the circumference reduction rates (RR) at above elbow level was observed at 3 and 6 months of follow-up comparing the two groups (p<0.00001), with higher values in Group A than in Group B. No significant difference was detected comparing RR values at above and below elbow at 12 and 24 months postoperatively. LYMQOL metrics showed significantly better scores (p<0.0001) in all domains at all follow-up appointments in Group A. CONCLUSIONS Patients with postmastectomy upper limb lymphedema can benefit from combined lymph node transfer and axillary scar release with fat graft, as this approach seems to fasten the onset of improvement and to have a positive impact on patients' quality of life.
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Affiliation(s)
- M Maruccia
- Division of Plastic and Reconstructive Surgery, Department of Emergency and Organ Transplantation, University of Bari, 11, Piazza Giulio Cesare, Bari 70124, Italy
| | - R Elia
- Division of Plastic and Reconstructive Surgery, Department of Emergency and Organ Transplantation, University of Bari, 11, Piazza Giulio Cesare, Bari 70124, Italy.
| | - P Ciudad
- Department of Plastic and Reconstructive Surgery, China Medical University Hospital, Taichung, Taiwan
| | - E Nacchiero
- Division of Plastic and Reconstructive Surgery, Department of Emergency and Organ Transplantation, University of Bari, 11, Piazza Giulio Cesare, Bari 70124, Italy
| | - F Nicoli
- Department of Plastic and Reconstructive Surgery, University of Rome ``Tor Vergata'', Rome, Italy
| | - M Vestita
- Division of Plastic and Reconstructive Surgery, Department of Emergency and Organ Transplantation, University of Bari, 11, Piazza Giulio Cesare, Bari 70124, Italy
| | - H C Chen
- Department of Plastic and Reconstructive Surgery, China Medical University Hospital, Taichung, Taiwan
| | - G Giudice
- Division of Plastic and Reconstructive Surgery, Department of Emergency and Organ Transplantation, University of Bari, 11, Piazza Giulio Cesare, Bari 70124, Italy
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Chuang S, Chang KS, Woods DD, Chen HC, Reynolds ME, Chien DK. Beyond surge: Coping with mass burn casualty in the closest hospital to the Formosa Fun Coast Dust Explosion. Burns 2018; 45:964-973. [PMID: 30598266 DOI: 10.1016/j.burns.2018.12.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 08/11/2018] [Revised: 12/03/2018] [Accepted: 12/10/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE To provide an insight into the challenges faced by the closest hospital to the Formosa Fun Coast Dust Explosion (FFCDE) disaster scene, and to examine how the hospital staff adapted to cope with the mass burn casualty (MBC) in their overcrowded emergency department (ED) after the disaster. MATERIAL AND METHODS The critical incident technique was used for the investigation. Data was gathered through in-depth individual interviews with 15 key participants in this event. The interview data was combined with the medical records of the FFCDE patients and admission logs to build a detailed timeline of ED workload. Process tracing analysis was used to evaluate how the ED and other units adapted to deal with actual and potential bottlenecks created by the patient surge. RESULTS Fifty-eight burn patients were treated and registered in approximately six hours while the ED managed 43 non-FFCDE patients. Forty-four patients with average total body surface area burn 51.3% were admitted. Twenty burn patients were intubated. The overwhelming demand created shortages primarily of clinicians, ED space, stretchers, ICU beds, and critical medical materials for burn care. Adaptive activities for the initial resuscitation are identified and synthesized into three typical adaptation patterns. These adaptations were never previously adopted in ED normal practices for daily surge nor in periodical exercises. The analysis revealed adaptation stemmed from the dynamic re-planning and coordination across roles and units and the anticipation of bottlenecks ahead. CONCLUSION In the hospital closest to the FFCDE disaster scene, it caused an overwhelming demand in an already crowded, beyond-nominal-capacity ED. This study describes how the hospital mobilized and reconfigured response capacity to cope with overload, uncertainty, and time pressure. These findings support improving disaster planning and preparedness for all healthcare entities through organizational support for adaptation and routine practice coping with unexpected scenarios.
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Affiliation(s)
- Sheuwen Chuang
- Graduate Institute of Data Science, Taipei Medical University, Taipei, Taiwan; Health Policy and Care Research Center, Taipei Medical University, Taipei, Taiwan
| | - Kuo-Song Chang
- Department of Emergency Medicine, MacKay Memorial Hospital, Taipei, Taiwan
| | - David D Woods
- Department of Integrated Systems Engineering, The Ohio State University, OH, USA
| | - Hsiao-Chun Chen
- Health Policy and Care Research Center, Taipei Medical University, Taipei, Taiwan
| | - Morgan E Reynolds
- Department of Integrated Systems Engineering, The Ohio State University, OH, USA
| | - Ding-Kuo Chien
- Department of Emergency Medicine, MacKay Memorial Hospital, Taipei, Taiwan; School of Medicine, Mackay Medical College, Taipei, Taiwan.
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22
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Di Taranto G, Elia R, Amorosi V, Alamouti R, Sitpahul N, Chan JCY, Liao LY, Ribuffo D, Chen HC. The difference in the caliber of efferent lymphatic vessels among various lymph node flaps. J Surg Oncol 2018; 118:1212-1213. [PMID: 30332501 DOI: 10.1002/jso.25257] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 08/06/2018] [Indexed: 01/04/2023]
Affiliation(s)
- G Di Taranto
- Department of Plastic Surgery; China Medical University Hospital; Taichung Taiwan
- Department of Plastic and Reconstructive Surgery; Sapienza University of Rome, Umberto I University Hospital; Rome Italy
| | - R Elia
- Department of Plastic Surgery; China Medical University Hospital; Taichung Taiwan
- Division of Plastic and Reconstructive Surgery, Department of Emergency and Organ Transplantation; University of Bari; Bari
| | - V Amorosi
- Department of Plastic Surgery; China Medical University Hospital; Taichung Taiwan
- Plastic Surgery Unit, Sant’Andrea Hospital, School of Medicine and Psychology, “Sapienza” Rome; Rome Italy
| | - R Alamouti
- Department of Plastic Surgery; China Medical University Hospital; Taichung Taiwan
- Department of Plastic and Reconstructive Surgery; The Royal London Hospital, Barts health NHS Trust; London UK
| | - N Sitpahul
- Department of Plastic Surgery; China Medical University Hospital; Taichung Taiwan
- Faculty of Medicine Ramathibodi Hospital, Department of Plastic and Maxillofacial Surgery, Mahidol University; Bangkok Thailand
| | - JCY Chan
- Department of Plastic Surgery; China Medical University Hospital; Taichung Taiwan
| | - LY Liao
- Department of Plastic Surgery; China Medical University Hospital; Taichung Taiwan
| | - D Ribuffo
- Department of Plastic and Reconstructive Surgery; Sapienza University of Rome, Umberto I University Hospital; Rome Italy
| | - HC Chen
- Department of Plastic Surgery; China Medical University Hospital; Taichung Taiwan
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23
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Lu J, Li J, Han QY, Lu XX, Hu Y, Chen HC, Hu J. [Analysis of the characteristics of lymphocyte subsets in peripheral blood among coal worker's pneumoconiosis patients]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 36:353-356. [PMID: 29996380 DOI: 10.3760/cma.j.issn.1001-9391.2018.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To preliminary analysis of the characteristics of lymphocyte subsets in peripheral blood among 135 cases of coal worker's pneumoconiosis patients in Huainan mining area. Methods: The peripheral bloods of 135 cases of coal worker's pneumoconiosis patients and 112 cases of health examiners were collected. Flow cytometry was used to detect peripheral blood lymphocytes, T cell subsets and CD4(+)CD25(+) regulatory T cells. Results: Compared with the control group, CD64 index of granulocytes and lymphocytes was slightly higher. The total T cells (CD3(+)) increased in peripheral blood, CD4(+) expression was reduced and CD8(+) expression was increased in infection group, CD4(+)/CD8(+) ratio was inverted, the differences between the infection group and the control group were statistically significant (P<0.05) . There were significantly fewer NK (nature killer) and B cells, significantly more double negative T cells (DNT, CD3(+)CD4(-)CD8(-)) than the control group (P<0.05) . There was no statistically significant difference of CD4(+)CD25(+)CD127(+low)、CD4(+)CD25(+)CD127(+hi) and the ration of Treg/CD4(+)CD25(+)CD127(+hi) protein expression in peripheral blood in two groups (P>0.05) . Conclusion: The analysis of peripheral blood lymphocyte and subgroup is an ideal index to monitor the immune status of coal worker's pneumoconiosis patients. It has theoretical significance for studying the immune mechanism of pneumoconiosis and guiding clinical treatment.
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Affiliation(s)
- J Lu
- Department of Medical laboratory, Medical College, Anhui University of Science and Technology, Huainan 232001, China
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Chen HC, Chen MY, Hsieh CL, Wu SY, Hsu HC, Lin YW. TRPV1 is a Responding Channel for Acupuncture Manipulation in Mice Peripheral and Central Nerve System. Cell Physiol Biochem 2018; 49:1813-1824. [PMID: 30231245 DOI: 10.1159/000493627] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 09/11/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND/AIMS Acupuncture involves inserting a fine needle into a specific point, often called an acupoint, thereby initiating a therapeutic effect accompanied by phenomena such as soreness, heaviness, fullness, and numbness. Acupoints are characterized as points located in deep tissues with abundant sensory nerve terminals, which suggests that there is a strong relationship between acupoints and peripheral sensory afferents. In this study, we determined whether manual acupuncture (MA) or different frequencies of electroacupuncture (EA) share similar mechanisms for activating excitatory neurotransmission. METHODS We performed MA or EA at acupoint ST36 and we also used western blot and immunostaining techniques to determine neural changes at the peripheral dorsal root ganglion (DRG), spinal cord (SC), and somatosensory cortex (SSC) levels. RESULTS Our results show that either MA or EA at the ST36 acupoint significantly increased components of the TRPV1-related signaling pathway, such as pPKA, pPI3K, pPKC-pERK, and pAKT (but not pp38 or pJNK) at the peripheral DRG and central SC-SSC levels. Furthermore, excitatory phosphorylated N-methyl-D-aspartate receptor (pNMDA) and pCaMKIIα (but not pNR2B, pCaMKIIδ, or pCaMKIIγ) also increased. These molecules could not increase in the DRG and SC-SSC of TRPV1-/-mice. CONCLUSION Our data demonstrates that both MA and EA can activate excitatory signals in either peripheral or central levels. We also define that TRPV1 is crucial for an acupuncture effect and then initiate excitatory pNR1-pCaMKII pathway, at peripheral DRG and central SC-SSC level. We suggest that the TRPV1 signaling pathway is highly correlated to Acupuncture effect that implies the real clinical significance.
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Affiliation(s)
- Hsiao-Chun Chen
- College of Chinese Medicine, Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
| | - Ming-Yen Chen
- College of Chinese Medicine, Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
| | - Ching-Liang Hsieh
- College of Chinese Medicine, Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan.,College of Chinese Medicine, Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan.,China Medical University Hospital, Department of Chinese Medicine, Taichung, Taiwan
| | - Shu-Yih Wu
- Department of Rehabilitation Medicine, Mackay Memorial Hospital, Taipei, Taiwan
| | - Hsin-Cheng Hsu
- College of Chinese Medicine, School of Post-Baccalaureate Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Yi-Wen Lin
- College of Chinese Medicine, Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan.,Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
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Dhasmana D, Herbert L, Patel V, Chen HC, Jones M, Kohner EM. The Effect of Acute Ethanol Consumption on the Human Retinal Circulation: A Study in Diabetic and Non-Diabetic Subjects. Eur J Ophthalmol 2018; 4:144-50. [PMID: 7819729 DOI: 10.1177/112067219400400303] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The effects of acute ethanol consumption on retinal haemodynamics and retinal vascular autoregulation to oxygen in the human retinal circulation were studied in 10 diabetic (mean age +/- SD: 38.2 +/- 11.1) and 16 non-diabetic (mean age +/- SD: 32.4 +/- 8.8) subjects. Subjects drank 0.5 g of ethanol, as vodka, per kg of body weight, diluted in sugar-free orange juice. Retinal blood flow was determined using laser Doppler velocimetry and computerised image analysis. The effect of ethanol on oxygen reactivity, as a measure of autoregulation, was also determined after 60% oxygen inhalation. All subjects demonstrated a significant fall in mean arterial blood pressure (control group 3.3%, p = 0.04, diabetic subjects 5.7%, p = 0.05), after ethanol intake. Ethanol caused no significant change in retinal blood flow. Oxygen reactivity was found to be 38.3% (22.4-47.7, median and interquartile range) in the non-diabetic subjects at baseline, and 30.7% (10.8-42.1) after ethanol ingestion. In diabetic subjects, the oxygen reactivity was 33.2% (19.8-46.8) at baseline and 24.5% (21.1-32.1) after ethanol. In this study ethanol did not significantly affect retinal blood flow or impair autoregulation. These results suggest that the retinal circulation may be able to autoregulate despite the presence of ethanol, in contrast to other vascular beds where ethanol changes flow.
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Affiliation(s)
- D Dhasmana
- Diabetic Retinopathy Unit, Royal Postgraduate Medical School, Hammersmith Hospital London, U.K
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Ude CC, Shamsul BS, Ng MH, Chen HC, Ohnmar H, Amaramalar SN, Rizal AR, Johan A, Norhamdan MY, Azizi M, Aminuddin BS, Ruszymah BHI. Long-term evaluation of osteoarthritis sheep knee, treated with TGF-β3 and BMP-6 induced multipotent stem cells. Exp Gerontol 2018; 104:43-51. [PMID: 29421350 DOI: 10.1016/j.exger.2018.01.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 12/15/2016] [Revised: 12/09/2017] [Accepted: 01/16/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND Hyaline articular cartilage, which protects the bones of diarthrodial joints from forces associated with load bearing, frictions, and impacts has very limited capacities for self-repair. Over the years, the trend of treatments has shifted to regenerations and researchers have been on the quest for a lasting regeneration. We evaluated the treatment of osteoarthritis by chondrogenically induced ADSCs and BMSCs for a long time functional recovery. METHODS Osteoarthritis was induced at the right knee of sheep by complete resection of ACL and medial meniscus. Stem cells from sheep were induced to chondrogenic lineage. Test sheep received 5 mls single doses of 2 × 107 autologous PKH26-labelled ADSCs or BMSCs, while controls received basal medium. Functional recovery of the knees was evaluated via electromyography. RESULTS Induced ADSCs had 625, 255, 393, 908, 409, 157 and 1062 folds increases of collagen I, collagen II, aggrecan, SOX9, cartilage oligomeric protein, chondroadherin and fibromodullin compare to uninduced cells, while BMSCs had 702, 657, 321, 276, 337, 233 and 1163 respectively; p = .001. Immunocytochemistry was positive for these chondrogenic markers. 12 months post-treatment, controls scored 4 in most regions using ICRS, while the treated had 8; P = .001. Regenerated cartilages were positive to PKH26 and demonstrated the presence of condensing cartilages on haematoxylin and eosin; and Safranin O. OA degenerations caused significant amplitude shift from right to left hind limb. After treatments, controls persisted with significant decreases; while treated samples regained balance. CONCLUSIONS Both ADSCs and BMSCs had increased chondrogenic gene expressions using TGF-β3 and BMP-6. The treated knees had improved cartilage scores; PKH26 can provide elongated tracking, while EMG results revealed improved joint recoveries. These could be suitable therapies for osteoarthritis.
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Affiliation(s)
- C C Ude
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia; Bioartificial Organ and Regenerative Medicine Unit, National Defence University of Malaysia, Sungai Besi Camp 57000, K.L, Malaysia
| | - B S Shamsul
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia
| | - M H Ng
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia
| | - H C Chen
- Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 Serdang, Malaysia.
| | - Htwe Ohnmar
- Rehab Unit, Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia
| | - S N Amaramalar
- Rehab Unit, Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia
| | - A R Rizal
- Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia.
| | - A Johan
- Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia
| | - M Y Norhamdan
- Department of Orthopedic & Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia
| | - M Azizi
- Bioartificial Organ and Regenerative Medicine Unit, National Defence University of Malaysia, Sungai Besi Camp 57000, K.L, Malaysia
| | - B S Aminuddin
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia; ENT Consultant Clinic, Ampang Putri Specialist Hospital, 68000 Ampang, Malaysia
| | - B H I Ruszymah
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras 56000, K.L, Malaysia; Department of Physiology, Medical Faculty, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif Bandar Tun Razak Muda Abdul Aziz, Campus, 56000 K.L, Malaysia..
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27
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Chen HC, Hung YM, Hsieh FC, Lin SL. A Case of Neurologically Intact Survival after Compression-Only Cardiopulmonary Resuscitation by Two Bystanders. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791602300606] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Conventional cardiopulmonary resuscitation (CPR) requires chest compression and mouth-to-mouth breathing. We report a 55-year-old man in cardiac arrest who received immediate chest compression but without assisted ventilation by two bystanders for 28 minutes until the arrival of the emergency medical team. His consciousness recovered completely on the third hospital day. According to the literature review, “28 minutes” may possibly be the longest period of time of compression-only CPR in out-of-hospital cardiac arrest patients with neurologically intact survival. Thus, this case supports the present CPR guideline that recommends effective chest compression without assisted ventilation by laypersons for patients in cardiac arrest.
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Affiliation(s)
- HC Chen
- Kaohsiung Municipal Min-Sheng Hospital, Department of Internal Medicine, Kaohsiung City, Taiwan
| | - YM Hung
- Kaohsiung Veterans General Hospital, Department of Emergency Medicine, Kaohsiung City, Taiwan
- National Yang-Ming University, Institute of Public Health, School of Medicine, Taipei, Taiwan
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Lo Torto F, Kaciulyte J, Ciudad P, Agko M, Manrique OJ, Ribuffo D, Chen HC. Re: Impact of the method and success of pharyngeal reconstruction on the outcome of treating laryngeal and hypopharyngeal cancers with pharyngolaryngectomy: A national analysis. J Plast Reconstr Aesthet Surg 2017; 70:e23-e24. [PMID: 28807590 DOI: 10.1016/j.bjps.2017.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 07/24/2017] [Indexed: 11/18/2022]
Affiliation(s)
- F Lo Torto
- Sapienza University of Rome, Policlinico Umberto I, Department of Surgery "P. Valdoni", Unit of Plastic and Reconstructive Surgery, Rome, Italy
| | - J Kaciulyte
- Sapienza University of Rome, Policlinico Umberto I, Department of Surgery "P. Valdoni", Unit of Plastic and Reconstructive Surgery, Rome, Italy.
| | - P Ciudad
- Department of Plastic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - M Agko
- Department of Plastic Surgery, China Medical University Hospital, Taichung, Taiwan
| | - O J Manrique
- Division of Plastic and Reconstructive Surgery, Mayo Clinic, Rochester, MN, USA
| | - D Ribuffo
- Sapienza University of Rome, Policlinico Umberto I, Department of Surgery "P. Valdoni", Unit of Plastic and Reconstructive Surgery, Rome, Italy
| | - H C Chen
- Department of Plastic Surgery, China Medical University Hospital, Taichung, Taiwan
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Abstract
UNLABELLED The use of local anaesthesia and adrenaline for hand surgery is gaining popularity; however, where vascularity is impaired, wide-awake surgery is considered a contraindication. We present our case series of five digital devascularizations and eight amputations that underwent surgery using the 'wide-awake' anaesthetic technique. A temporary digital tourniquet (< 20 min) was used in three cases to identify structures quickly. The anastomoses were performed under local anaesthesia without a tourniquet. All cases had successful re-establishment of blood flow with good perfusion to the digital tips; no cases were re-explored because of vascular crisis. Four cases had minor superficial soft tissue necrosis that healed secondarily. We conclude that digital revascularization and replantation can be performed under local anaesthesia with use of adrenaline and without detriment to the traumatized digit provided careful patient selection and adequate operator experience are available. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Jkf Wong
- 1 Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College and Chang Gung University, Taipei, Taiwan.,2 Blond McIndoe Laboratories, Institute of Inflammation and Repair, University of Manchester, Manchester, UK
| | - C H Lin
- 1 Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College and Chang Gung University, Taipei, Taiwan
| | - N J Chang
- 1 Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College and Chang Gung University, Taipei, Taiwan
| | - H C Chen
- 1 Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College and Chang Gung University, Taipei, Taiwan
| | - Y T Lin
- 1 Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College and Chang Gung University, Taipei, Taiwan
| | - C C Hsu
- 1 Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung Medical College and Chang Gung University, Taipei, Taiwan
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Ude CC, Chen HC, Norhamdan MY, Azizi BM, Aminuddin BS, Ruszymah BHI. The evaluation of cartilage differentiations using transforming growth factor beta3 alone and with combination of bone morphogenetic protein-6 on adult stem cells. Cell Tissue Bank 2017; 18:355-367. [PMID: 28667462 DOI: 10.1007/s10561-017-9638-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 06/27/2017] [Indexed: 01/08/2023]
Abstract
In our quest to standardize our formula for a clinical trial, transforming growth factor-beta3 (TGF-β3) alone and in combination with bone morphogenetic protein-6 (BMP-6) were evaluated for their effectiveness in cartilage differentiation. Bone Marrow Stem Cells (BMSCs) and Adipose Derived Stem Cells (ADSCs) were induced to chondrogenic lineage using two different media. Native chondrocytes served as positive control. ADSCs and BMSCs proved multipotency by tri-lineage differentiations. ADSC has significantly higher growth kinetics compare to Chondrocyte only p ≤ 0.05. Using TGF-β3 alone, BMSC revealed higher expressions for hyaline cartilage genes compare to ADSCs. Chondrocyte has significantly higher early chondrogenic markers expression to ADSCs and BMSCs, while BMSCs was only higher to ADSC at chondroadherin, p ≤ 0.0001. On mature chondrogenic markers, chondrocytes were significantly higher to ADSCs and BMSCs for aggrecan, collagen IX, sry (sex determining region y)-box9, collagen II and fibromodullin; and only to ADSC for collagen XI. BMSC was higher to ADSC for aggrecan and collagen IX, p ≤ 0.0001. The combination of TGF-β3 + BMP-6 revealed increased gene expressions on both BMSCs and ADSCs for early and mature chondrogenic markers, but no significance difference. For dedifferentiation markers, ADSC was significantly higher to chondrocyte for collagen I. Glycosaminoglycan evaluations with both formulas revealed that chondrocytes were significantly higher to ADSCs and BMSCs, but none was significant to each other, p ≤ 0.0001. Combination of 10 ng TGF-β3 with 10 ng of BMP-6 enhanced chondrogenic potentials of BMSCs and ADSCs compare to TGF-β3 alone. This could be the ideal cocktail for either cell's chondrogenic induction.
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Affiliation(s)
- C C Ude
- Bioartificial Organ and Regenerative Medicine Unit, National Defence University of Malaysia, Sungai Besi, Camp, 57000, Kuala Lumpur, Malaysia
| | - H C Chen
- Department of Clinical Veterinary, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Malaysia
| | - M Y Norhamdan
- Department of Orthopedic and Traumatology, Universiti Kebangsaan Malaysia Medical Center, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000, Kuala Lumpur, Malaysia
| | - B M Azizi
- Bioartificial Organ and Regenerative Medicine Unit, National Defence University of Malaysia, Sungai Besi, Camp, 57000, Kuala Lumpur, Malaysia
| | - B S Aminuddin
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000, Kuala Lumpur, Malaysia.,ENT Consultant Clinic, Ampang Putri Specialist Hospital, 68000, Ampang, Malaysia
| | - B H I Ruszymah
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000, Kuala Lumpur, Malaysia. .,Department of Physiology, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, 56000, Kuala Lumpur, Malaysia.
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Montalban-Bravo G, Huang X, Naqvi K, Jabbour E, Borthakur G, DiNardo CD, Pemmaraju N, Cortes J, Verstovsek S, Kadia T, Daver N, Wierda W, Alvarado Y, Konopleva M, Ravandi F, Estrov Z, Jain N, Alfonso A, Brandt M, Sneed T, Chen HC, Yang H, Bueso-Ramos C, Pierce S, Estey E, Bohannan Z, Kantarjian HM, Garcia-Manero G. Erratum: A clinical trial for patients with acute myeloid leukemia or myelodysplastic syndromes not eligible for standard clinical trials. Leukemia 2017; 31:1659. [DOI: 10.1038/leu.2017.85] [Citation(s) in RCA: 6] [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: 11/09/2022]
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Cheng B, Chen HC, Chou IW, Tang TWH, Hsieh PCH. Harnessing the early post-injury inflammatory responses for cardiac regeneration. J Biomed Sci 2017; 24:7. [PMID: 28086885 PMCID: PMC5237143 DOI: 10.1186/s12929-017-0315-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 01/04/2017] [Indexed: 12/13/2022] Open
Abstract
Cardiac inflammation is considered by many as the main driving force in prolonging the pathological condition in the heart after myocardial infarction. Immediately after cardiac ischemic injury, neutrophils are the first innate immune cells recruited to the ischemic myocardium within the first 24 h. Once they have infiltrated the injured myocardium, neutrophils would then secret proteases that promote cardiac remodeling and chemokines that enhance the recruitment of monocytes from the spleen, in which the recruitment peaks at 72 h after myocardial infarction. Monocytes would transdifferentiate into macrophages after transmigrating into the infarct area. Both neutrophils and monocytes-derived macrophages are known to release proteases and cytokines that are detrimental to the surviving cardiomyocytes. Paradoxically, these inflammatory cells also play critical roles in repairing the injured myocardium. Depletion of either neutrophils or monocytes do not improve overall cardiac function after myocardial infarction. Instead, the left ventricular function is further impaired and cardiac fibrosis persists. Moreover, the inflammatory microenvironment created by the infiltrated neutrophils and monocytes-derived macrophages is essential for the recruitment of cardiac progenitor cells. Recent studies also suggest that treatment with anti-inflammatory drugs may cause cardiac dysfunction after injury. Indeed, clinical studies have shown that traditional ant-inflammatory strategies are ineffective to improve cardiac function after infarction. Thus, the focus should be on how to harness these inflammatory events to either improve the efficacy of the delivered drugs or to favor the recruitment of cardiac progenitor cells.
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Affiliation(s)
- Bill Cheng
- Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Sec. 2, Nankang District, Taipei, 115, Taiwan
| | - H C Chen
- Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Sec. 2, Nankang District, Taipei, 115, Taiwan
| | - I W Chou
- Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Sec. 2, Nankang District, Taipei, 115, Taiwan.,Graduate Institute of Life Sciences, National Defence Medical Center, Taipei, 114, Taiwan
| | - Tony W H Tang
- Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Sec. 2, Nankang District, Taipei, 115, Taiwan.,Program in Molecular Medicine, National Yang Ming University, Taipei, 112, Taiwan
| | - Patrick C H Hsieh
- Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Sec. 2, Nankang District, Taipei, 115, Taiwan. .,Graduate Institute of Life Sciences, National Defence Medical Center, Taipei, 114, Taiwan. .,Program in Molecular Medicine, National Yang Ming University, Taipei, 112, Taiwan. .,Graduate Institute of Medical Genomics and Proteomics, and Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, 100, Taiwan. .,Department of Surgery, National Taiwan University Hospital, Taipei, 100, Taiwan.
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Wei CL, Cheng JL, Khan MA, Yang LQ, Imani S, Chen HC, Fu JJ. An improved DNA marker technique for genetic characterization using RAMP-PCR with high-GC primers. Genet Mol Res 2016; 15:gmr8721. [PMID: 27706740 DOI: 10.4238/gmr.15038721] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Random amplified polymorphic DNA (RAPD) is a widely used molecular marker technique. As traditional RAPD has poor reproducibility and productivity, we previously developed an improved RAPD method (termed RAMP-PCR), which increased the reproducibility, number of bands, and efficiency of studies on polymorphism. To further develop the efficiency of this method, we used high-GC content primers for improved RAMP-PCR with DNA samples from Lonicera japonica. Comparison of amplification profiles obtained by standard RAPD primers with those obtained by regular PCR and RAMP-PCR, and high-GC primers with regular PCR and RAMP-PCR showed that the average number of bands and polymorphisms per primer gradually and significantly increased (from 6.4 to 15.0 and from 4.6 to 10.2, respectively). Cluster dendrograms showed similar results, indicating that this new method is consistent and reproducible. A total of 22 samples from different species, including plants, animals, and humans, were used for RAMP-PCR with high-GC primers. Multiple bands were successfully amplified from all samples, demonstrating that this method is a reliable technique with consistent results and may be of general interest in studies on different genera and species. We developed highly effective DNA markers, which can provide a more effective and potentially valuable approach than traditional RAPD for the genetic identification of various organisms, particularly of medicinal plants.
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Affiliation(s)
- C L Wei
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China.,The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - J L Cheng
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - M A Khan
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - L Q Yang
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - S Imani
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - H C Chen
- Department of Biochemistry, School of Life Sciences & the State Key Laboratory of Medical Genetics, Central South University, Changsha City, Hunan Province, China
| | - J J Fu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China .,The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China .,Judicial Authentication Center, Southwest Medical University, Luzhou City, Sichuan Province, China
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Abstract
Purpose: Meniscal tears associated with displaced fragments are clinically significant. We propose the "disproportional posterior horn sign" as a supportive criterion to identify a posterocentrally displaced meniscal fragment on MR imaging studies. If the meniscal posterior horn in the central portion appears larger than that in the peripheral section, it is considered positive for "disproportional posterior horn sign". Material and Methods: MR images obtained in 42 patients with 43 lesions, confirmed to have displaced meniscal tears, were included in this study. The MR images were retrospectively evaluated for the presence of the "disproportional posterior horn sign", as well as the other known signs. Results: The "disproportional posterior horn sign" was seen in 9 (20.9%) of 43 lesions, including 1 lateral discoid meniscal tear, 5 lateral meniscal tears and 3 medial meniscal tears. Five of them also had other signs of a displaced meniscal fragment. However, the remaining 4 cases only exhibited the "disproportional posterior horn sign". For the other MR signs, the "absent bow tie sign" was detected in 40 (93%) of 43 lesions, the "flipped meniscus sign" in 27 (62.8%) of 43 lesions, the "double posterior cruciate ligament sign" in 17 (39.5%) of 43 lesions and the "notch fragment sign" in 22 (51.2%) of 43 lesions. Conclusion: The "disproportional posterior horn sign" is helpful in demonstrating a posterocentrally displaced meniscal fragment, especially when other characteristic signs are unremarkable or absent.
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Affiliation(s)
- H C Chen
- Department of Radiology, China Medical College Hospital, Taichung, P.R. China
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Cheng JL, Yin ZC, Mei ZQ, Wei CL, Chen HC, Wu XS, Fu JJ. Development and significance of SCAR marker QG12-5 for Canarium album (Lour.) Raeusch by molecular cloning from improved RAPD amplification. Genet Mol Res 2016; 15:gmr8347. [PMID: 27706623 DOI: 10.4238/gmr.15038347] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Sequence-characterized amplified region (SCAR) is a valuable molecular marker for the genetic identification of any species. This marker is mainly derived from molecular cloning of random amplified polymorphic DNA (RAPD). We have previously reported the use of an improved RAPD technique for the genetic characterization of different samples of Canarium album (Lour.) Raeusch (C. album). In this study, DNA fragments were amplified using improved RAPD amplified from different samples of C. album. The amplified DNA fragment was excised, purified from an agarose gel and cloned into a pGM-T vector; subsequently, a positive clone, called QG12-5 was identified by PCR amplification and enzymatic digestion and sequenced by Sanger di-deoxy sequencing method. This clone was revealed consisting of 510 nucleotides of C. album. The SCAR marker QG12-5 was developed using specifically designed PCR primers and optimized PCR conditions. This SCAR marker expressed seven continuous "TATG" [(TATG)n] tandem repeats, which was found to characterize C. album. Subsequently, this novel SCAR marker was deposited in GenBank with accession No. KT359568. Therefore, we successfully developed a C. album-specific SCAR marker for the identification and authentication of different C. album species in this study.
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Affiliation(s)
- J L Cheng
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Z C Yin
- Key Laboratory of Genetics and Birth Health of Hunan Province, Family Planning Institute of Hunan Province, Changsha, Hunan, China.,Key Lab of MOE for Development Biology and Protein Chemistry, Center for Heart Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Z Q Mei
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - C L Wei
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - H C Chen
- Department of Biochemistry, School of Life Sciences & the State Key Laboratory of Medical Genetics, Central South University, Changsha, Hunan, China
| | - X S Wu
- Key Lab of MOE for Development Biology and Protein Chemistry, Center for Heart Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - J J Fu
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.,Judicial Authentication Center, Southwest Medical University, Luzhou, Sichuan, China
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Chen M, Wang JB, Xing H, Ma YL, Yang J, Chen HC, Yao ST, Luo HB, Duan X, Wang YK, Duan S, Jia MH. [Study on the threshold of HIV-1 drug resistance in Dehong prefecture of Yunnan province in 2014]. Zhonghua Liu Xing Bing Xue Za Zhi 2016; 37:206-9. [PMID: 26917516 DOI: 10.3760/cma.j.issn.0254-6450.2016.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To study the HIV-1 genotypes and transmitted drug resistance (TDR) in Dehong prefecture of Yunnan province in 2014. METHODS A total of 70 plasma samples of recently reported HIV-infected individuals between 16 and 25 years old were collected in Dehong prefecture from January to August 2014. Among them, 58 samples which met the criterion of HIV drug resistance threshold survey (HIVDR-TS) were subjected to genetic drug resistance detection. RESULTS 50 plasma samples were successfully sequenced and analyzed. Among them, 34.0% were Chinese and 66.0% were Burmese. Based on pol sequences, all the identified HIV genotypes would include CRF01_AE (28.0%), subtype C(20.0%), URF(20.0% ), CRF62_BC(10.0% ), CRF08_BC(8.0% ), CRF07_BC (4.0%), CRF64_BC(4.0%), subtype B(4.0%) and CRF55_01B(2.0%). One drug, which resistant mutation to proteinase inhibitors had been detected in one sequence. Based on the statistical method of HIVDR-TS, the prevalence of transmitted HIV-1 drug resistance was adjusted as <5%. CONCLUSION The proportion of Burmese was relatively higher among those newly reported HIV-infected individuals aged 16 to 25 in Dehong. We noticed that the novel circulating recombinant forms began to function. However, the level of transmission through HIV-1 drug resistant strains still kept low in Dehong.
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Affiliation(s)
- M Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J B Wang
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - H Xing
- Division of Research on Virology and Immunology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y L Ma
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - J Yang
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - H C Chen
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - S T Yao
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - H B Luo
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
| | - X Duan
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - Y K Wang
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - S Duan
- Department of AIDS/ STDs Control and Prevention, Dehong Center for Disease Control and Prevention, Mangshi 678400, China
| | - M H Jia
- Institute for AIDS/STDs Control and Prevention, Yunnan Provincial Center for Disease Control and Prevention, Kunming 650022, China
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Chen YN, Phuong VN, Chen HC, Chou CH, Cheng HC, Wu CH. Detection of the Severe Acute Respiratory Syndrome-Related Coronavirus and Alphacoronavirus in the Bat Population of Taiwan. Zoonoses Public Health 2016; 63:608-615. [PMID: 27178103 PMCID: PMC7165716 DOI: 10.1111/zph.12271] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Indexed: 01/11/2023]
Abstract
Bats have been demonstrated to be natural reservoirs of severe acute respiratory syndrome coronavirus (SARS CoV) and Middle East respiratory syndrome (MERS) CoV. Faecal samples from 248 individuals of 20 bat species were tested for partial RNA‐dependent RNA polymerase gene of CoV and 57 faecal samples from eight bat species were tested positive. The highest detection rate of 44% for Scotophilus kuhlii, followed by 30% for Rhinolophus monoceros. Significantly higher detection rates of coronaviral RNA were found in female bats and Scotophilus kuhlii roosting in palm trees. Phylogenetic analysis classified the positive samples into SARS‐related (SARSr) CoV, Scotophilus bat CoV 512 close to those from China and Philippines, and Miniopterus bat CoV 1A‐related lineages. Coronaviral RNA was also detected in bat guano from Scotophilus kuhlii and Myotis formosus flavus on the ground and had potential risk for human exposure. Diverse bat CoV with zoonotic potential could be introduced by migratory bats and maintained in the endemic bat population in Taiwan.
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Affiliation(s)
- Y-N Chen
- Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan, Taiwan
| | - V N Phuong
- Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan, Taiwan
| | - H C Chen
- Institute of Ecology and Evolutionary Biology, National Taiwan University, Taipei, Taiwan
| | - C-H Chou
- Endemic Species Research Institute, Council of Agriculture, Nantou, Taiwan
| | - H-C Cheng
- Endemic Species Research Institute, Council of Agriculture, Nantou, Taiwan
| | - C-H Wu
- Department of Applied Mathematics, Chung Yuan Christian University, Taoyuan, Taiwan
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Yang XL, Liu YJ, Hu LQ, Guo LW, Liu GP, Wu B, Chen HC. Protective efficacy of a genetic subunit bacterin against edema disease of swine in mice. Genet Mol Res 2015; 14:18026-33. [PMID: 26782450 DOI: 10.4238/2015.december.22.29] [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: 11/03/2022]
Abstract
The exotoxin SLT-IIeB from the Escherichia coli Ee strain was expressed in E. coli, and the recombinant protein was purified, mixed with the Ee strain, then emulsified with oil-emulsion adjuvants to obtain a mixed subunit bacterin. Groups of Kunming mice were immunized at weeks 0 and 2, and challenged intraperitoneally with the Ee strain at week 4. Antibodies were detected by ELISA and an agglutination test. After the second immunization, the antibody level increased and the rate of immune protection against the Ee strain was 70 and 91.7% in the subunit bacterin and bacterin groups, respectively. Therefore, the mixed subunit bacterin provided good protection against the homologous Ee strain, which provides a basis for further research, into high-efficacy vaccines against porcine edema disease.
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Affiliation(s)
- X L Yang
- College of Animal Science, Yangtze University, JingZhou, HuBei, China.,Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Y J Liu
- Center for Animal Disease Control and Prevention of China, Beijing, China
| | - L Q Hu
- College of Animal Science, Yangtze University, JingZhou, HuBei, China.,Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - L W Guo
- College of Animal Science, Yangtze University, JingZhou, HuBei, China.,Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - G P Liu
- College of Animal Science, Yangtze University, JingZhou, HuBei, China.,Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China.,State Key Laboratory of Microbiology, Huazhong Agricultural University, WuHan, HuBei, China
| | - B Wu
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China.,State Key Laboratory of Microbiology, Huazhong Agricultural University, WuHan, HuBei, China
| | - H C Chen
- Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China.,State Key Laboratory of Microbiology, Huazhong Agricultural University, WuHan, HuBei, China
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Yang WC, Zhu L, Qiu YM, Zhou BX, Cheng JL, Wei CL, Chen HC, Li LY, Fu XD, Fu JJ. Isolation and analysis of cell-free fetal DNA from maternal peripheral blood in Chinese women. Genet Mol Res 2015; 14:18078-89. [PMID: 26782455 DOI: 10.4238/2015.december.22.34] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Non-invasive prenatal diagnosis is used to detect the genetic material of the fetus by isolating the cell-free fetal DNA (cffDNA) from maternal peripheral blood. In order to establish an isolation method for cffDNA from maternal peripheral blood in Chinese women, the cffDNA was acquired with a two-step centrifugation using a QlAamp DNA Blood mini kit. The SRY gene of plasma DNA was amplified by polymerase chain reaction (PCR). Real-time quantitative PCR was used to measure the concentration of cffDNA in maternal peripheral blood in different pregnant women. The results of the SRY gene amplification of plasma DNA from pregnant women was the same as that of the amniocyte DNA. The average concentration of cffDNA in maternal peripheral blood of pregnant women in different gestational stages was 0.98 ng/mL (0.26-1.49 ng/mL), 1.43 ng/mL (0.46- 2.34 ng/mL), and 1.95 ng/mL (0.65-6.81 ng/mL) from early, middle, and late gestational stages, respectively. The mean of cffDNA from total DNA in plasma in different stages of gestation was 22.28% (9.86-27.81%). The lowest concentration of DNA amplified by nested-PCR in our research was 10-4-10-3 ng/μL. The isolation method for cffDNA from maternal peripheral blood was successfully established and further research into its applications will be conducted.
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Affiliation(s)
- W C Yang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - L Zhu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - Y M Qiu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,Maternal and Child Health Care Hospital of Zigong, Zigong, Sichuan Province, China
| | - B X Zhou
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - J L Cheng
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - C L Wei
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China
| | - H C Chen
- Department of Biochemistry, School of Life Sciences & the State Key Laboratory of Medical Genetics, Central South University, Changsha, Hunan Province, China
| | - L Y Li
- Institute of Reproduction and Stem Cell Engineering, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China
| | - X D Fu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Sichuan Medical University, Luzhou, Sichuan Province, China
| | - J J Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China.,Department of Obstetrics and Gynecology, First Affiliated Hospital of Sichuan Medical University, Luzhou, Sichuan Province, China
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Shamsul BS, Tan KK, Chen HC, Aminuddin BS, Ruszymah BHI. Posterolateral spinal fusion with ostegenesis induced BMSC seeded TCP/HA in a sheep model. Tissue Cell 2014; 46:152-8. [PMID: 24630213 DOI: 10.1016/j.tice.2014.02.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 02/06/2014] [Accepted: 02/06/2014] [Indexed: 11/26/2022]
Abstract
Autogenous bone graft is the gold standard for fusion procedure. However, pain at donor site and inconsistent outcome have left a surgeon to venture into some other technique for spinal fusion. The objective of this study was to determine whether osteogenesis induced bone marrow stem cells with the combination of ceramics granules (HA or TCP/HA), and fibrin could serve as an alternative to generate spinal fusion. The sheep's bone marrow mesenchymal stem cells (BMSCs) were aspirated form iliac crest and cultured for several passages until confluence. BMSCs were trypsinized and seeded on hydroxyapatite scaffold (HA) and tricalcium phosphate/hydroxyapatite (TCP/HA) for further osteogenic differentiation in the osteogenic medium one week before implantation. Six adult sheep underwent three-level, bilateral, posterolateral intertransverse process fusions at L1-L6. Three fusion sites in each animal were assigned to three treatments: (a) HA constructs group/L1-L2, (b) TCP/HA constructs group/L2-L3, and (c) autogenous bone graft group/L5-L6. The spinal fusion segments were evaluated using radiography, manual palpation, histological analysis and scanning electron microscopy (SEM) 12 weeks post implantation. The TCP/HA constructs achieved superior lumbar intertransverse fusion compared to HA construct but autogenous bone graft still produced the best fusion among all.
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Affiliation(s)
- B S Shamsul
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Malaysia
| | - K K Tan
- Orthopedic and Spinal Surgery Consultant Clinic, Johor Specialist Hospital, Malaysia
| | - H C Chen
- Faculty of Veterinary Medicine, Universiti Putra Malaysia, Malaysia
| | - B S Aminuddin
- Ear, Nose & Throat Consultant Clinic, Ampang Puteri Specialist Hospital, Malaysia; Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Malaysia
| | - B H I Ruszymah
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, Malaysia; Department of Physiology, Medical Faculty Universiti Kebangsaan Malaysia, Malaysia.
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Abstract
BACKGROUND Returning to work has been recognized as an indicator of functional recovery. Few studies have aimed to explore whether one's type of work changes after transplantation. PURPOSE This study aims to describe the change in types of work in liver transplant patients. METHODS A retrospective and descriptive study was conducted at a medical center in northern Taiwan. The data were collected by a self-report questionnaire between July and September 2010. Descriptive statistics an correlational analysis were used to analyze the data. RESULTS A convenience sample of 111 adult liver transplant patients was included in this study. Of the sample, 20 patients remained unemployed, 44 had a change in status by becoming unemployed (n=42) or employed (n=2), and 47 patients remained employed after transplantation. At the time of data collection, 49 (44.1%) liver transplant patients were gainfully employed, a rate that was lower than that of the pretransplantation stage (n=89, 80.2%). The number of workers engaged in manual labor decreased from 40 to 18 between pre- and posttransplantation. Of the 47 still-employed patients, 6 (12.8%) changed their occupation after transplantation. CONCLUSION The rate of gainful employment after liver transplantation was low, and those patients who had done manual labor pretransplantation were no longer able to do this type of work and were unemployed. The still-employed patients who worked in management or were professionals did not change their type of work after transplantation; however, service and labor workers did change their type of work.
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Affiliation(s)
- L-C Weng
- School of Nursing, Chang Gung University, and Liver Research Center, Department of General Surgery, Chang Gung Medical Foundation-Chang Gung Memorial Hospital, Taoyuan, Taiwan
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Cigna E, Minni A, Barbaro M, Attanasio G, Sorvillo V, Malzone G, Chen HC, Ribuffo D. An experience on primary thinning and secondary debulking of anterolateral thigh flap in head and neck reconstruction. Eur Rev Med Pharmacol Sci 2012; 16:1095-1101. [PMID: 22913160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVES The antero-lateral thigh flap (ALTF) has become one of the workhorses of reconstructive procedures of the head and neck. The cosmetic result of this flap is uncertain during the main reconstructive procedure, so free flap contouring in head and neck reconstruction following cancer ablation is usually performed at the end of therapy. To obtain an adequate symmetry of the flap a safe thinning during the primary inset or a secondary defatting may be performed. PATIENTS AND METHODS The study includes 45 patients underwent reconstruction with ALTF for head and neck tumors. Patients were divided into two groups: Group 1 (20 patients underwent a primary thinning of the flap), Group 2 (25 patient underwent a secondary debulking of the flap). Patients were evaluated in terms of total number of cosmetic reconstruction procedures performed, hospital stay and aesthetic satisfaction. RESULTS Epidemiological analysis showed an average age of 51 years old in patients. Patients were affected by squamous cell carcinoma in 33 cases. Within Group 1, 14 patients underwent surgery only once, 5 underwent surgery twice and one patient three times. In group 2, 8 patients underwent surgery once, 10 patients twice, 3 patients three times and 4 patients four times. Considering total of hospital stay, the average length of stay was 18.83 days in the group of patients subjected to primary debulking, versus 23.67 days in the group subjected to secondary defatting. CONCLUSIONS The ALT flap is a safe and reliable free flap for head and neck reconstructive surgery. As showed in the study and in previous reports, the thinning of the flap is a safe procedure, without increasing the flap complications and allowing an immediate symmetry of the recipient site contour. Furthermore, ALTF thinning reduces major defatting revisions requiring general anesthesia and the total number of secondary procedures.
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Affiliation(s)
- E Cigna
- Units of Plastic Surgery and ENT, Sapienza University of Rome, Policlinico Umberto I Hospital, Italy.
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Lin SE, Chen HC, Zhao J, Li S, He S, Weng XC. Left-lateralized N170 response to unpronounceable pseudo but not false Chinese characters-the key role of orthography. Neuroscience 2011; 190:200-6. [PMID: 21704128 DOI: 10.1016/j.neuroscience.2011.05.071] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 05/22/2011] [Accepted: 05/27/2011] [Indexed: 11/26/2022]
Abstract
A negative event-related potential (ERP) component, known as N170, can be readily recorded over the posterior left brain region when skilled readers are presented with visual words. This left-lateralized word-related N170 has been attributed either to linguistic processes, particularly phonological processing, or to the role of orthographic regularity, emphasizing a perceptual origin. This debate, however, is difficult to resolve in the context of alphabetic scripts because of the tight relations between orthography and phonology. In contrast, Chinese characters have arbitrary mappings between orthographic and sound forms, making it possible to tease apart these two properties of visual words. We therefore addressed this issue by examining ERP responses to Chinese characters and three types of structurally matched but unpronounceable stimuli: pseudo-characters, false-characters, and stroke combinations. A content-irrelevant color matching task was adopted to minimize potentially different top-down modulations across stimulus types. Results show that, relative to false-characters and stroke combinations, real- and pseudo-characters evoked greater N170 in the left posterior brain region. Critically, despite being unpronounceable, pseudo-characters produced the same amplitude and left-lateralized N170, just as real-characters. These results provide strong evidence that orthography rather than phonology serves as the main driver for the enhanced and left-lateralized N170 to visual words.
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Affiliation(s)
- S E Lin
- Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
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Chen HC, Chen CK, Yang TH, Kuo LC, Jou IM, Su FC, Sun YN. Model-based segmentation of flexor tendons from magnetic resonance images of finger joints. Annu Int Conf IEEE Eng Med Biol Soc 2011; 2011:8009-8012. [PMID: 22256199 DOI: 10.1109/iembs.2011.6091975] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Trigger finger is a common hand disease, causing swelling, painful popping and clicking in moving the affected finger joint. To better evaluate patients with trigger finger, segmentation of flexor tendons from magnetic resonance (MR) images of finger joints, which can offer detailed structural information of tendons to clinicians, is essential. This paper presents a novel model-based method with three stages for automatically segmenting the flexor tendons. In the first stage, a set of tendon contour models (TCMs) is initialized from the most proximal cross-sectional image via two-step ellipse estimation. Each of the TCMs is then propagated to its distally adjacent image by affine registration. The propagation is sequentially performed along the proximal-distal direction until the most distal image is reached, as the second stage of segmentation. The TCMs on each cross-sectional image are refined in the last stage with the snake deformation. MR volumes of three subjects were used to validate the segmentation accuracy. Compared with the manual results, our method showed good accuracy with small average margins of errors (within 0.5 mm) and large overlapping ratio (dice similarity coefficient above 0.8). Overall, the proposed method has great potential for morphological change assessment of flexor tendons and pulley-tendon system modeling for image guided surgery.
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Affiliation(s)
- H C Chen
- Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan, ROC
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Aklilu E, Zunita Z, Hassan L, Chen HC. Phenotypic and genotypic characterization of methicillin-resistant Staphylococcus aureus (MRSA) isolated from dogs and cats at University Veterinary Hospital, Universiti Putra Malaysia. Trop Biomed 2010; 27:483-492. [PMID: 21399590] [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: 05/30/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is known to cause nosocomial infections and is now becoming an emerging problem in veterinary medicine. The objective of the study was to determine the presence of MRSA in 100 cats and dogs sampled between November 2007 and April 2008 at the University Veterinary Hospital, Universiti Putra Malaysia. MRSA was detected in 8% of pets sampled. Ten percent (5/50) and 6% (3/50) of the isolates were from dogs and cats, respectively. All MRSA isolates possessed the mecA gene and were found to be resistant to at least three antimicrobials with a minimum of Oxacillin MIC of 8 μg/mL. One isolate (CT04) had an extremely high MIC of >256 μg/mL. The MLST type ST59 found in this study have been reported earlier from Singapore and other countries as a strain from animal and community-associated MRSA respectively. Pulsed-field gel electrophoresis revealed five pulsotypes. Two isolates from cats (CT27 and CT33) and three isolates from dogs (DG16, DG20, and DG49) were respectively assigned to pulsotypes B and D. The study suggests that cats and dogs in Malaysia are potential reservoirs for MRSA.
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Affiliation(s)
- E Aklilu
- Faculty of Veterinary Medicine Universiti Putra Malaysia, 43400 UPM Serdang, Malaysia
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Ding YG, Fang H, Lao LM, Jiang XJ, Chen HC. Genetic diagnosis of Hailey-Hailey disease in two Chinese families: novel mutations in the ATP2C1 gene. Clin Exp Dermatol 2010; 34:e968-71. [PMID: 20055875 DOI: 10.1111/j.1365-2230.2009.03715.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hailey-Hailey disease (HHD; OMIM 169600), is an autosomal dominantly inherited disorder characterized by suprabasal cell separation of the epidermis. Mutations in ATP2C1, which encodes the human secretory pathway Ca(2+)/ Mn(2) +/- ATPase protein 1 (hSPCA1), have been identified as the pathogenic gene of HHD without evidence of genetic heterogeneity. In this study, the ATP2C1 gene was screened in two typical Chinese pedigrees with HHD, and two specific novel mutations of the ATP2CL gene were identified. Family 1 had a 16-base deletion mutation c.1068-1083del16 and family 2 had a substitution mutation c.1982T>G (p.Met661Arg). DNA sequencing of the three descendants of the probands revealed that they all had the normal genotype, indicating that there had been no transmission of the mutation.
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Affiliation(s)
- Y G Ding
- Department of Dermatology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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Mohd Heikal MY, Aminuddin BS, Jeevanan J, Chen HC, Sharifah SH, Ruszymah BHI. Autologous implantation of bilayered tissue-engineered respiratory epithelium for tracheal mucosal regenesis in a sheep model. Cells Tissues Organs 2010; 192:292-302. [PMID: 20616535 DOI: 10.1159/000318675] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2010] [Indexed: 11/19/2022] Open
Abstract
The objective of this study was to regenerate the tracheal epithelium using autologous nasal respiratory epithelial cells in a sheep model. Respiratory epithelium and fibroblast cells were harvested from nasal turbinates and cultured for 1 week. After confluence, respiratory epithelium and fibroblast cells were suspended in autologous fibrin polymerized separately to form a tissue-engineered respiratory epithelial construct (TEREC). A 3 × 2 cm² tracheal mucosal defect was created, and implanted with TEREC and titanium mesh as a temporary scaffold. The control groups were divided into 2 groups: polymerized autologous fibrin devoid of cells (group 1), and no construct implanted (group 2). All sheep were euthanized at 4 weeks of implantation. Gross observation of the trachea showed minimal luminal stenosis formation in the experimental group compared to the control groups. Macroscopic evaluation revealed significant mucosal fibrosis in control group 1 (71.8%) as compared to the experimental group (7%). Hematoxylin and eosin staining revealed the presence of minimal overgrowth of fibrous connective tissue covered by respiratory epithelium. A positive red fluorescence staining of PKH26 on engineered tissue 4 weeks after implantation confirmed the presence of cultured nasal respiratory epithelial cells intercalated with native tracheal epithelial cells. Scanning electron microscopy showed the presence of short microvilli representing immature cilia on the surface of the epithelium. Our study showed that TEREC was a good replacement for a tracheal mucosal defect and was able to promote natural regenesis of the tracheal epithelium with minimal fibrosis. This study highlighted a new technique in the treatment of tracheal stenosis.
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Affiliation(s)
- M Y Mohd Heikal
- Department of Physiology, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
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Chen HC, Wu CH, Lin CJ, Liu YH, Sun YN. Automated segmentation for patella from lateral knee X-ray images. Annu Int Conf IEEE Eng Med Biol Soc 2010; 2009:3553-6. [PMID: 19963588 DOI: 10.1109/iembs.2009.5332588] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
X-ray image segmentation is an important issue in medical image analysis. Due to inconsistent X-ray absorption, the intensities are usually unevenly distributed and noisy in the processed organ, thus the object segmentation becomes difficult. In this paper we propose a new segmentation method for patella from the lateral knee X-ray images based on the active shape model (ASM). At first, a patella shape model is constructed by principal component analysis (PCA) of corresponding landmarks obtained from a set of training shape. As the knee X-ray image usually contains many anatomical structures, we design a strategy based on edge tracing to place the initial shape model as close to the patella boundary as possible. Then, the shape model is deformed and fitted to the patella boundary by using a dual-optimization approach that includes a genetic algorithm (GA) to get the global geometric transform and ASM to deform the shape model iteratively. Consequently, the proposed method can cope with different knee X-ray images and can segment the patella in an automatic procedure. In the experiment, 20 images were tested and promising results are obtained by the proposed method. This method is found useful for the clinical evaluation and biomechanical study of knee.
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Affiliation(s)
- H C Chen
- Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C
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Fan JY, Chen LS, Lai JC, Chen MK, Chen HC. A pre-paid newborn hearing screening programme: a community-based study. B-ENT 2010; 6:265-269. [PMID: 21302689] [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: 05/30/2023] Open
Abstract
OBJECTIVES To help obstetric hospitals and clinics to implement newborn hearing screening and to test the feasibility of a pre-paid model for screening. PATIENTS AND METHODS From July 2005 to August 2008, we organised a coordinated newborn hearing screening team with portable automated auditory brainstem response (AABR) to provide in-patient screening after delivery and out-patient re-screening at one month of age in birthing facilities throughout Changhua County, Taiwan. This was a community-based study organised by otolaryngologists at a tertiary referral centre. RESULTS Ten medical facilities participated in our screening programme. 7,139 out of 12,901 neonates delivered in these facilities during the period were screened for hearing loss. 105 (1.47%) babies who did not pass the in-patient screening were re-screened at one month old. Forty (0.56%) babies referred from the re-screening were sent for diagnostic work-up and six of them failed to show up. The overall follow-up rate was 94.3% (99/105). Eleven babies with bilateral hearing loss and eight babies with unilateral hearing loss were diagnosed. The incidence of bilateral hearing loss in our programme was 1.5/1000. The screening rate descended from medical centre to clinic (p < 0.0001). There was no significant difference between the referral rates for different levels of birthing facilities (p = 0.5611). CONCLUSIONS Our study demonstrates that a pre-paid model using AABR is feasible at all three levels of medical facilities. Pre-paid community-based screening might be an option for developing countries in the implementation of universal newborn hearing screening.
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Affiliation(s)
- J Y Fan
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua, Taiwan
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Wang SY, Chen HC, Liu JR, Lin YC, Chen MJ. Identification of yeasts and evaluation of their distribution in Taiwanese Kefir and Viili starters. J Dairy Sci 2009; 91:3798-805. [PMID: 18832201 DOI: 10.3168/jds.2007-0468] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The objective of the present study was to investigate yeast communities in kefir grains and viili starters in Taiwan through conventional microbiological cultivation and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). The DNA sequencing was used as a validity technique to ensure that all isolates within each group belonged to just one species, and to confirm the identified results of PCR-DGGE. Results indicated that a combination of conventional microbiological cultivation with PCR-DGGE and sequencing could successfully identify 4 yeast species from both types of cultures in Taiwan. Kluyveromyces marxianus, Saccharomyces turicensis, and Pichia fermentans were found in Taiwanese kefir grains with a distribution of 76, 22, and 2%, respectively, whereas Klu. marxianus, Saccharomyces unisporus and P. fermentans were identified in viili starters corresponding to 58, 11, and 31% of the total cell counts, respectively. Furthermore, the culture-independent method was applied to identify the yeast species using DGGE. Only 2 yeast species, Klu. marxianus and S. turicensis, were found in kefir grains and 2, Klu. marxianus and P. fermentans, in viili starters. These results suggest that in samples containing multiple species, PCR-DGGE may fail to detect some species. Sequences of yeast isolates reported in this study have been deposited in the GenBank database under accession nos. DQ139802, AF398485, DQ377652, and AY007920.
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Affiliation(s)
- S Y Wang
- Experimental Farm, National Taiwan University, Taipei, Taiwan, Republic of China
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