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Corrigendum
Corrigendum to “Evaluation of Potency on Diphtheria and Tetanus Toxoid for Adult Vaccines by In Vivo Toxin Neutralization Assay Using National Reference Standards”[Osong Public Health Res Perspect 2018;9(5):278–82]
Chan Woong Choi, Jae Hoon Moon, Jae Ok Kim, Si Hyung Yoo, Hyeon Guk Kim, Jung-Hwan Kim, Tae Jun Park, Sung Soon Kim
Osong Public Health Res Perspect. 2018;9(6):363-363.   Published online December 31, 2018
DOI: https://doi.org/10.24171/j.phrp.2018.9.6.12
  • 12,023 View
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Brief Report
Evaluation of Potency on Diphtheria and Tetanus Toxoid for Adult Vaccines by In Vivo Toxin Neutralization Assay Using National Reference Standards
Chan Woong Choi, Jae Hoon Moon, Jae Ok Kim, Si Hyung Yoo, Hyeon Guk Kim, Jung-Hwan Kim, Tae Jun Park, Sung Soon Kim
Osong Public Health Res Perspect. 2018;9(5):278-282.   Published online October 31, 2018
DOI: https://doi.org/10.24171/j.phrp.2018.9.5.10
  • 5,646 View
  • 61 Download
  • 2 Crossref
AbstractAbstract PDF
Objectives

Vaccinations against diphtheria and tetanus are essential in providing immunity against these bacterial infections. The potency of diphtheria and tetanus toxoid vaccines can be measured using the in vivo toxin neutralization assay. The limit of potency of this assay was determined only for children. Therefore, we assessed the potency of adult vaccines using this assay to identify the feasibility of limit for adult vaccines.

Methods

Fifteen lots of tetanus-reduced diphtheria and tetanus-diphtheria-acellular pertussis vaccines were used. In vivo toxin neutralization and lethal challenge assays were conducted on each vaccine to calculate the potencies of the toxoids. National reference standards for toxins and antitoxins were used for in vivo toxin neutralization assay.

Results

All 15 lots satisfied the limits of potency for lethal challenge assay. The potency of diphtheria and tetanus toxoids exceeded 1 and 8 units/mL, respectively, for in vivo toxin neutralization assay.

Conclusion

Although additional studies are required for new assays and limits, the current level of potency for adult vaccines as determined by in vivo toxin neutralization assay, was demonstrated in this study. Such efforts to improve assays are expected to promote the development of diphtheria and tetanus vaccines for adults and to contribute to vaccine self-sufficiency.

Citations

Citations to this article as recorded by  
  • Discovery and development of COVID‐19 vaccine from laboratory to clinic
    Venkatesan Saravanan, Bharath Kumar Chagaleti, Pavithra Lakshmi Narayanan, Vijay Babu Anandan, Haritha Manoharan, G.V. Anjana, Ramalingam Peraman, S. Karthik Raja Namasivayam, M. Kavisri, Jesu Arockiaraj, Kathiravan Muthu Kumaradoss, Meivelu Moovendhan
    Chemical Biology & Drug Design.2024;[Epub]     CrossRef
  • Establishment of the 2nd National Reference Standard for Diphtheria toxin in Korea
    So Young Kim, Jinwoong Lee, Sol Jeon, Su Jung An, In yeong Hwang, Jae Hoon Moon, Jong Kwan Park, Taeseung Yang, Jaewoon Son, Daegeun Kim, Jeongwon Jang, Seulgi Park, Eun Ah Choi, Jin Kyu Kim, Jin Tae Hong, Jong Won Kim
    Journal of Bacteriology and Virology.2021; 51(4): 1.     CrossRef
Original Articles
Modification of AxSYM Human Immunodeficiency Virus Assay to Identify Recent Human Immunodeficiency Virus Infections in Korean Human Immunodeficiency Virus-Positive Individuals
Jin-Sook Wang, Mee-Kyung Kee, Byeong-Sun Choi, Sung Soon Kim
Osong Public Health Res Perspect. 2015;6(3):184-191.   Published online June 30, 2015
DOI: https://doi.org/10.1016/j.phrp.2015.06.002
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  • 1 Crossref
AbstractAbstract PDF
Objectives
To estimate human immunodeficiency virus (HIV) incidence using HIV avidity assays in Korea, we established a serological testing method to differentiate recent HIV infections from long-standing ones.
Methods
We adopted two incidence assays, the BED HIV-1 incidence test (Calypte Biomedical) and an HIV avidity assay (using Abbott AxSYM HIV Antigen/Antibody Combo), and performed them on Korean HIV samples obtained from 81 HIV seroconverters (n = 193), 135 HIV-positive samples, and three HIV commercial incidence panels (PRB965, PRB933, and PRB601 from SeaCare). To determine the most optimal concentration of the chaotropic agent (Guanidine) and the cutoff value for the avidity assay, we evaluated the sensitivity and specificity of the assay at different concentration levels.
Results
We determined that the concentration of Guanidine to be used in the avidity assay was 1.5M. The cutoff value of the avidity index (AI) was 0.8, and the sensitivity and specificity were 90.2% and 83.8%, respectively, under this condition. The gray zone for the avidity assay was 0.75–0.85 AI. The mean of coefficient of variation was low, at 5.43%.
Conclusion
An optimized avidity assay for the diagnosis of recent HIV infections using Korean samples was established. This assay will be applied to investigate the level of recent infection and will provide basic data to the HIV prevention policy in Korea.

Citations

Citations to this article as recorded by  
  • Characteristics of recent HIV infection among individuals newly diagnosed as HIV-positive in South Korea (2008–2015)
    Myeongsu Yoo, Jin-Sook Wang, Su-Jin Park, Jeong-ok Cha, Yoonhee Jung, Yoon-Seok Chung, Myung Guk Han, Byeong-Sun Choi, Sung-Soon Kim, Mee-Kyung Kee
    Scientific Reports.2022;[Epub]     CrossRef
The Recency Period for Estimation of Human Immunodeficiency Virus Incidence by the AxSYM Avidity Assay and BED-Capture Enzyme Immunoassay in the Republic of Korea
Hye-Kyung Yu, Tae-Young Heo, Na-Young Kim, Jin-Sook Wang, Jae-Kyeong Lee, Sung Soon Kim, Mee-Kyung Kee
Osong Public Health Res Perspect. 2014;5(4):187-192.   Published online August 31, 2014
DOI: https://doi.org/10.1016/j.phrp.2014.06.002
  • 3,182 View
  • 23 Download
  • 1 Crossref
AbstractAbstract PDF
Objectives
Measurement of the incidence of the human immunodeficiency virus (HIV) is very important for epidemiological studies. Here, we determined the recency period with the AxSYM avidity assay and the BED-capture enzyme immunoassay (BED-CEIA) in Korean seroconverters.
Methods
Two hundred longitudinal specimens from 81 seroconverters with incident HIV infections that had been collected at the Korea National Institute of Health were subjected to the AxSYM avidity assay (cutoff = 0.8) and BED-CEIA (cutoff = 0.8). The statistical method used to estimate the recency period in recent HIV infections was nonparametric survival analyses. Sensitivity and specificity were calculated for 10-day increments from 120 days to 230 days to determine the recency period.
Results
The mean recency period of the avidity assay and BED-CEIA using a survival method was 158 days [95% confidence interval (CI), 135–181 days] and 189 days (95% CI, 170–208 days), respectively. Based on the use of sensitivity and specificity, the mean recency period for the avidity assay and BED-CEIA was 150 days and 200 days, respectively.
Conclusion
We determined the recency period to estimate HIV incidence in Korea. These data showed that the nonparametric survival analysis often led to shorter recency periods than analysis of sensitivity and specificity as a new method. These findings suggest that more data from seroconverters and other methodologies are needed to determine the recency period for estimating HIV incidence.

Citations

Citations to this article as recorded by  
  • Western Blot-Based Logistic Regression Model for the Identification of Recent HIV-1 Infection: A Promising HIV-1 Surveillance Approach for Resource-Limited Regions
    Jiegang Huang, Minlian Wang, Chunyuan Huang, Bingyu Liang, Junjun Jiang, Chuanyi Ning, Ning Zang, Hui Chen, Jie Liu, Rongfeng Chen, Yanyan Liao, Li Ye, Hao Liang
    BioMed Research International.2018; 2018: 1.     CrossRef
Forecasting the Number of Human Immunodeficiency Virus Infections in the Korean Population Using the Autoregressive Integrated Moving Average Model
Hye-Kyung Yu, Na-Young Kim, Sung Soon Kim, Chaeshin Chu, Mee-Kyung Kee
Osong Public Health Res Perspect. 2013;4(6):358-362.   Published online December 31, 2013
DOI: https://doi.org/10.1016/j.phrp.2013.10.009
  • 3,224 View
  • 20 Download
  • 24 Crossref
AbstractAbstract PDF
Objectives
From the introduction of HIV into the Republic of Korea in 1985 through 2012, 9,410 HIV-infected Koreans have been identified. Since 2000, there has been a sharp increase in newly diagnosed HIV-infected Koreans. It is necessary to estimate the changes in HIV infection to plan budgets and to modify HIV/AIDS prevention policy. We constructed autoregressive integrated moving average (ARIMA) models to forecast the number of HIV infections from 2013 to 2017.
Methods
HIV infection data from 1985 to 2012 were used to fit ARIMA models. Akaike Information Criterion and Schwartz Bayesian Criterion statistics were used to evaluate the constructed models. Estimation was via the maximum likelihood method. To assess the validity of the proposed models, the mean absolute percentage error (MAPE) between the number of observed and fitted HIV infections from 1985 to 2012 was calculated. Finally, the fitted ARIMA models were used to forecast the number of HIV infections from 2013 to 2017.
Results
The fitted number of HIV infections was calculated by optimum ARIMA (2,2,1) model from 1985–2012. The fitted number was similar to the observed number of HIV infections, with a MAPE of 13.7%. The forecasted number of new HIV infections in 2013 was 962 (95% confidence interval (CI): 889–1,036) and in 2017 was 1,111 (95% CI: 805–1,418). The forecasted cumulative number of HIV infections in 2013 was 10,372 (95% CI: 10,308–10,437) and in 2017 was14,724 (95% CI: 13,893–15,555) by ARIMA (1,2,3).
Conclusion
Based on the forecast of the number of newly diagnosed HIV infections and the current cumulative number of HIV infections, the cumulative number of HIV-infected Koreans in 2017 would reach about 15,000.

Citations

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  • Intelligent Health Care and Diseases Management System: Multi-Day-Ahead Predictions of COVID-19
    Ahed Abugabah, Farah Shahid
    Mathematics.2023; 11(4): 1051.     CrossRef
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    Kamilla Mussina, Shirali Kadyrov, Ardak Kashkynbayev, Sauran Yerdessov, Gulnur Zhakhina, Yesbolat Sakko, Amin Zollanvari, Abduzhappar Gaipov
    HIV/AIDS - Research and Palliative Care.2023; Volume 15: 387.     CrossRef
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    Siti Wardah, Nunung Nurhasanah, Wiwik Sudarwati
    Jurnal Sistem dan Manajemen Industri.2023; 7(2): 127.     CrossRef
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    Maria Dyah Kurniasari, Andrian Dolfriandra Huruta, Hsiu Ting Tsai, Cheng-Wen Lee
    Social Work in Public Health.2021; 36(1): 12.     CrossRef
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    Dhally M. Menda, Mukumbuta Nawa, Rosemary K. Zimba, Catherine M. Mulikita, Jim Mwandia, Henry Mwaba, Karen Sichinga, Hamidreza Karimi-Sari
    Advances in Public Health.2021; 2021: 1.     CrossRef
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    Shock and Vibration.2021;[Epub]     CrossRef
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    Zeming Li, Yanning Li
    BMC Medical Informatics and Decision Making.2020;[Epub]     CrossRef
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    Branislav Vuksanovic, Davoud Rahimi Ardali
    International Journal of Computer and Electrical E.2019; 11(1): 1.     CrossRef
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    Algorithms.2019; 12(11): 235.     CrossRef
  • APLIKASI METODE DOUBLE EXPONENTIAL SMOOTHING HOLT DAN ARIMA UNTUK MERAMALKAN VOLUNTARY COUNSELING AND TESTING (VCT) ODHA DI PROVINSI JAWA TIMUR
    Suci Retno Ningtiyas
    The Indonesian Journal of Public Health.2019; 13(2): 158.     CrossRef
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    Qiu Ying Wang, Kaiyue Liu, Zhiguo Sun, Minghui Zhang
    Optik.2018; 172: 494.     CrossRef
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    Luca Basile, Manuel Oviedo de la Fuente, Nuria Torner, Ana Martínez, Mireia Jané, Jeffrey Shaman
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    Japanese Journal of Infectious Diseases.2016; 69(4): 279.     CrossRef
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    Mohamed A Daw
    World Journal of Virology.2016; 5(1): 14.     CrossRef
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    Shengnan Wang, Max Petzold, Junshan Cao, Yue Zhang, Weibing Wang
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  • Changing Patterns of HIV Epidemic in 30 Years in East Asia
    S. Pilar Suguimoto, Teeranee Techasrivichien, Patou Masika Musumari, Christina El-saaidi, Bhekumusa Wellington Lukhele, Masako Ono-Kihara, Masahiro Kihara
    Current HIV/AIDS Reports.2014; 11(2): 134.     CrossRef
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    Hae-Wol Cho, Chaeshin Chu
    Osong Public Health and Research Perspectives.2013; 4(6): 291.     CrossRef
Articles
Epidemiological and Immunological Characteristics at the Time of HIV Diagnosis for HIV/AIDS Cohort Registrants Representative of HIV-Infected Populations in Korea
Jin-Hee Lee, Seung Hyun Kim, Jin-Sook Wang, Kyoung Mi Sung, Sung Soon Kim, Mee-Kyung Kee
Osong Public Health Res Perspect. 2012;3(2):100-106.   Published online June 30, 2012
DOI: https://doi.org/10.1016/j.phrp.2012.04.002
  • 3,237 View
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  • 2 Crossref
AbstractAbstract PDF
Objectives
The Korea HIV/AIDS cohort was constructed with 18 hospitals that care for HIV-infected individuals in 2006. We compared the epidemiological and immunological characteristics of the cohort registrants with those of the HIVinfected population at the time of HIV diagnosis.
Methods
This study was conducted on 5717 people living with HIV/AIDS from 1985 to 2009, of which 789 individuals registered with the Korea HIV/AIDS cohort study. Individuals who had data from initial CD4+ T-cell counts measured within 6 months following HIV diagnosis were selected as study participants to predict the status of disease progression at the time of HIV diagnosis. A total of 2886 patients (50%) were selected from people living with HIV/AIDS, of whom 424 individuals (54%) were cohort registrants. The χ2 test and Wilcoxon rank sum test were used for analysis.
Results
The distributions of age, marital status, diagnosed regions, reason for HIV testing, and screening site were similar between the HIV-infected population and the cohort registrants. In 1985–2004, the male ratio for the cohort registrants (94.3%) was significantly higher than that measured for the HIV-infected population (89.5%) (p = 0.0339). With regard to transmission route, homosexual contact of cohort registrants (46.6%) was higher than that of the HIV-infected population (40.1%) (p = 0.022) in 2005–2009. No statistical difference in CD4+ T-cell counts at the time of HIV diagnosis was found between the HIVinfected population and cohort registrants (p = 0.2195).
Conclusion
The Korea HIV/AIDS cohort registrants represent the HIV-infected population, and the data collected from this cohort could be used as a foundation for national statistics.

Citations

Citations to this article as recorded by  
  • Changing Patterns of HIV Epidemic in 30 Years in East Asia
    S. Pilar Suguimoto, Teeranee Techasrivichien, Patou Masika Musumari, Christina El-saaidi, Bhekumusa Wellington Lukhele, Masako Ono-Kihara, Masahiro Kihara
    Current HIV/AIDS Reports.2014; 11(2): 134.     CrossRef
  • Can Stigma Still Distort the Spectrum of a Disease?
    Hae-Wol Cho, Chaeshin Chu
    Osong Public Health and Research Perspectives.2012; 3(2): 65.     CrossRef
Neutralizing Antibody Responses and Evolution of the Viral Envelope in the Course of HIV-1 Korean Clade B Infection
Bo Gyeong Shin, Mi-Ran Yun, Sung Soon Kim, Gab Jung Kim
Osong Public Health Res Perspect. 2011;2(3):151-157.   Published online December 31, 2011
DOI: https://doi.org/10.1016/j.phrp.2011.11.038
  • 3,269 View
  • 22 Download
  • 1 Crossref
AbstractAbstract PDF
Objectives
HIV is able to continuously adapt to and evade the evolving neutralizing antibody responses of the host. We investigated the ability of HIV variants to evade neutralizing antibodies in order to understand the distinct characteristics of HIV-1 Korean clade B.
Methods
Three drug-naive subjects were enrolled in this study who were infected with HIV-1 Korean clade B. Neutralizations were performed using autologous plasma and pseudovirion-based assays in order to analyze and compare changes in the env gene.
Results
In the early phase of infection, neutralizing activities against autologous virus variants gradually increased, which was followed by a decline in the humoral immune response against the subsequent viral escape variants. The amino acids lengths and number of potential N-linked glycosylation sites (PNGS) in HIV-1 env gene was positively correlated with neutralized antibody responses during the early stages of infection.
Conclusion
This study suggests that change within the env domains over the course of infection influences reactivities to neutralized antibodies and may also have an impact on host immune responses. This is the first longitudinal study of HIV-1 humoral immunity that took place over the entire course of HIV-1 Korean clade B infection.

Citations

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  • Blockage of CD59 Function Restores Activities of Neutralizing and Nonneutralizing Antibodies in Triggering Antibody-Dependent Complement-Mediated Lysis of HIV-1 Virions and Provirus-Activated Latently Infected Cells
    Kai Yang, Jie Lan, Nicole Shepherd, Ningjie Hu, Yanyan Xing, Daniel Byrd, Tohti Amet, Corlin Jewell, Samir Gupta, Carole Kounga, Jimin Gao, Qigui Yu, G. Silvestri
    Journal of Virology.2015; 89(18): 9393.     CrossRef
Original Articles
Estimation of HIV Seroprevalence in Colorectal Hospitals by Questionnaire Survey in Korea, 2002–2007
Mee-Kyung Kee, Do Yeon Hwang, Jong Kyun Lee, Seung Hyun Kim, Chaeshin Chu, Jin-Hee Lee, Sung Soon Kim
Osong Public Health Res Perspect. 2011;2(2):104-108.   Published online June 30, 2011
DOI: https://doi.org/10.1016/j.phrp.2011.08.002
  • 3,733 View
  • 19 Download
  • 4 Crossref
AbstractAbstract PDF
Objectives
The incidence of anal disease is higher among persons with human immunodeficiency virus (HIV) infection than among the general population. We surveyed the status of seroprevalence in colorectal hospitals in Korea.
Methods
The survey was conducted in colorectal hospitals in Korea from November to December 2008. The questionnaire was comprised of six topics about the status of HIV testing in colorectal hospitals. We gathered the data by website (http://hivqa.nih.go.kr/risk) or fax.
Results
Among 774 colorectal hospitals contacted, 109 (14%) hospitals participated in the survey. Among these, 48 hospitals (44%) performed HIV tests in their own hospitals and 11 (23%) took HIV testing by rapid method. The main reason for recommending an HIV test was surgical operation (54%) followed by endoscope (11%) and health checkup (9%). The annual number of HIV tests increased from 58,647 (at 21 hospitals) in 2002 to 246,709 (at 58 hospitals) in 2007. HIV seroprevalence was >3.0 per 10,000 individuals during 2002–2005, decreased to 2.2 per 10,000 individuals in 2006 and rose to 2.8 per 10,000 individuals in 2007.
Conclusions
HIV seroprevalence of colorectal hospitals was more than twice that of general hospitals in Korea. HIV surveillance systems based on colorectal hospitals for HIV/AIDS transmission prevention by early HIV diagnosis are needed.

Citations

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  • Discrimination and Stigma
    Hae-Wol Cho, Chaeshin Chu
    Osong Public Health and Research Perspectives.2015; 6(3): 141.     CrossRef
  • Hospital-based HIV/HSV-2 seroprevalence among male patients with anal disease in Korea: cross sectional study
    Jin-Sook Wang, Do Yeon Hwang, Hye-Kyung Yu, Sung Soon Kim, Jong Kyun Lee, Mee-Kyung Kee
    BMC Infectious Diseases.2014;[Epub]     CrossRef
  • Years of Epidemics (2009–2011): Pandemic Influenza and Foot-and-Mouth Disease Epidemic in Korea
    Hae-Wol Cho, Chaeshin Chu
    Osong Public Health and Research Perspectives.2013; 4(3): 125.     CrossRef
  • What is Next for HIV/AIDS in Korea?
    Hae-Wol Cho, Chaeshin Chu
    Osong Public Health and Research Perspectives.2013; 4(6): 291.     CrossRef
Ingenol Protects Human T Cells From HIV-1 Infection
Kee-Jong Hong, Hak Sung Lee, Yeong-shik Kim, Sung Soon Kim
Osong Public Health Res Perspect. 2011;2(2):109-114.   Published online June 30, 2011
DOI: https://doi.org/10.1016/j.phrp.2011.07.001
  • 3,380 View
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AbstractAbstract PDF
Objectives
Many natural compounds have been investigated as drug candidates to prevent human immunodeficiency virus (HIV) with low cytotoxicity. We tested whether ingenol from Euphorbia ingens exerts anti-HIV effects in human T cell lines.
Methods
and Results Ingenol effectively maintained high cell viability (CD50, >1 mM) in H9 and MT4 T cells. The efficacy of ingenol to inhibit HIV-1 infection was dose dependent. ED50 for 100 and 200 TCID50 of HIV-1 was 5.06 and 16.87 μM, respectively. Gag p24 antigen production in ingenol-treated MT4 cells was reduced by 24.5% on day 6 post-infection. While p24 antigen was reduced in ingenol-treated cells, levels of cytokines such as TNF-α and IL-6 and chemokines such as RANTES and MCP-1 were increased. dUTP level related to late apoptotic events was increased on day 2 post-infection of HIV by ingenol treatment, whereas expression of annexin V was unchanged. Reduced levels of iNOS and ZAP-70 after HIV infection were recovered by ingenol treatment.
Conclusion
Ingenol helps T cells to survive longer against viremia after HIV-1 infection, without exerting cytotoxic effects. Ingenol can be considered a safe and efficacious candidate for immune-boosting therapy for AIDS patients.

Citations

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    Viviane A. O Silva, Marcela N. Rosa, Olga Martinho, Amilcar Tanuri, João Paulo Lima, Luiz F. Pianowski, Rui M. Reis
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    Jin-Gyo Oh, Young-Won Chin, Sung-Jo Kim, Jong Min Choi, Sang Kyum Kim, Hee Eun Kang, Tae-Hwe Heo
    Molecular Pharmacology.2015; 88(2): 392.     CrossRef
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    Louis-Félix Nothias-Scaglia, Vincent Dumontet, Johan Neyts, Fanny Roussi, Jean Costa, Pieter Leyssen, Marc Litaudon, Julien Paolini
    Fitoterapia.2015; 105: 202.     CrossRef
  • Reactivation of latent HIV-1 by new semi-synthetic ingenol esters
    Diego Pandeló José, Koen Bartholomeeusen, Rodrigo Delvecchio da Cunha, Celina Monteiro Abreu, Jan Glinski, Thais Barbizan Ferreira da Costa, Ana Flávia Mello Bacchi Rabay, Luiz Francisco Pianowski Filho, Lech W. Dudycz, Udaykumar Ranga, Boris Matija Peter
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  • Dual Role of Novel Ingenol Derivatives from Euphorbia tirucalli in HIV Replication: Inhibition of De Novo Infection and Activation of Viral LTR
    Celina M. Abreu, Sarah L. Price, Erin N. Shirk, Rodrigo D. Cunha, Luiz F. Pianowski, Janice E. Clements, Amilcar Tanuri, Lucio Gama, Cheryl A. Stoddart
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Infectivity of Homologous Recombinant HIV-1 Pseudo-virus with Reverse Transcriptase Inhibitor-related Mutations from Highly Active Antiretroviral Therapy Experienced Patients
Oh-Kyung Kwon, Ju-yeon Choi, Eun-Jin Kim, Sung Soon Kim
Osong Public Health Res Perspect. 2011;2(1):23-28.   Published online June 30, 2011
DOI: https://doi.org/10.1016/j.phrp.2011.04.006
  • 3,230 View
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AbstractAbstract PDF
Objectives
In this study, the viral fitness of pseudo-viruses with a drug-resistant site in the reverse transcriptase (RT) region of the genome was investigated. The pseudo-viruses were derived from highly active antiretroviral therapy (HAART)-experienced HIV/AIDS patients.
Methods
HIV-1 RNA was extracted from the plasma of HAART-experienced (KRB9149, KRB7021, KRC1097) and HAART-naïve (KRC5180, KRC5123) HIV-1 patients. The RT gene from the extracted viral RNA was amplified and the polymerase chain reaction product was cloned from the pHXB2Δ2-261 RT vector. C8166 and TZM-bl cell lines were used as the HIV-1 replication capacity measurement system. To quantify the infectivity of homologous recombinant HIV-1, the infectivity derived from each pseudo-virus was compared with the infectivity of the reference strain HXB2.
Results
Patient-derived HIV-1 was cotransfected into C8166 cells and the expression level of the p24 antigen was measured. The expression was high in the HIV-1 isolates from patients KRC5180 and KRB9149 and low in patients KRB7021, KRC5123, and KRC1097, when compared with the reference strain. The infectivity of the pseudo-virus measured in TZM-bl cells decreased in the order, reference strain HXB2 > KRC5180 > KRC5123 > KRB9149 > KRB7021 > KRC1097.
Conclusion
In this study, HIV-1 infectivity of the drug-resistant strain isolated from HAART-experienced patients with HIV/AIDS was found to be lower than the infectivity of the reference strain HXB2. This study provides useful data for the phenotypic susceptibility assay in HAART-experienced patients infected with HIV-1.

Citations

Citations to this article as recorded by  
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PHRP : Osong Public Health and Research Perspectives
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