181 results on '"Nguyen, Thi Ngoc Lan"'
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2. Agrobacterium tumefaciens–mediated genetic transformation and overexpression of the flavonoid 3′5′-hydroxylase gene increases the flavonoid content of the transgenic Aconitum carmichaelii Debx. plant
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Nguyen, Thi Ngoc Lan, Hoang, Thi Thu Hoan, Nguyen, Huu Quan, Tu, Quang Tan, Tran, Thi Hong, Lo, Thi Mai Thu, Vu, Thi Thu Thuy, and Chu, Hoang Mau
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- 2022
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3. Overexpressing GmCHI1A increases the isoflavone content of transgenic soybean (Glycine max (L.) Merr.) seeds
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Nguyen, Huu Quan, Le, Thi Hong Trang, Nguyen, Thi Ngoc Lan, Nguyen, Thu Giang, Sy, Danh Thuong, Tu, Quang Tan, Vu, Thi Thu Thuy, Le, Van Son, Chu, Hoang Mau, and Vu, Thi Kim Lien
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- 2020
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4. Overexpression of the 'GmDREB2' gene increases proline accumulation and tolerance to drought stress in soybean plants
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Pham, Thi Thanh Nhan, Nguyen, Huu Quan, Nguyen, Thi Ngoc Lan, Dao, Xuan Tan, Sy, Danh Thuong, Van Son, Le, and Hoang Mau, Chu
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- 2020
5. Complete chloroplast genome of novel Adinandra megaphylla Hu species: molecular structure, comparative and phylogenetic analysis
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Nguyen, Huu Quan, Nguyen, Thi Ngoc Lan, Doan, Thi Nhung, Nguyen, Thi Thu Nga, Phạm, Mai Huong, Le, Tung Lam, Sy, Danh Thuong, Chu, Hoang Ha, and Chu, Hoang Mau
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- 2021
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6. Anti-RBD antibody quantitation after vaccination against Covid-19 among the elderly in 2021-2022
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Pham Quang, Loc, primary, Pham Thi Thanh, Hang, additional, Nguyen Thi Huong, Giang, additional, Bui Hong, Ngoc, additional, Nguyen Thi Ngoc, Lan, additional, and Lê Minh, Giang, additional
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- 2023
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7. Impact of Leadership Behavior on Entrepreneurship in State-Owned Enterprises: Evidence from Civil Servant Management Aimed at Improving Accountability
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Dao T. T. Thuy, Truong Quoc Viet, Vu Van Phuc, Thi-Hong-Diep Pham, Nguyen Thi Ngoc Lan, and Huong Ho
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leadership behavior ,entrepreneurship ,Vietnamese state-owned enterprises ,civil servants ,accountability ,Economics as a science ,HB71-74 - Abstract
This paper systematizes the theoretical foundation and empirical evidence of the impact of leadership behavior on entrepreneurship in state-owned enterprises, and the difference between state-owned enterprises that applied management based on the accountability of leaders, and those that did not. The paper uses the OLS regression model to identify the impact of leadership behavior on the entrepreneurship of state-owned enterprises by using data from a survey of 259 civil servants in Vietnamese state-owned enterprises. In our sample, 109 respondents belonged to the category of state-owned enterprises that did not apply management based on accountability, and 140 were state-owned enterprises that applied management based on accountability. The findings show that leadership behavior has a positive impact on the entrepreneurship of state-owned enterprises that do and do not apply management based on accountability, with results of 0.305 and 0.022, respectively. Moreover, the regression model is used to identify the factors that influence leadership behavior, including vision and wage policy having a statistical significance and positive impact on the leadership behaviors in all the state-owned enterprises. Additionally, some factors, including policy building, hi-tech usage, culture, teamwork, and training policy have positive impacts on leadership behavior in Model 1, and encouragement, monitoring, responsibility, and recruitment policy had positive impacts in Model 2 among the state enterprises. Additionally, this paper recommends some policies to promote leadership behavior in state enterprises in Vietnam.
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- 2022
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8. Mortality and its determinants in antiretroviral treatment-naive HIV-infected children with suspected tuberculosis: an observational cohort study
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Ay, Sao Sarady, Borand, Laurence, Chan, Malen, Chea, Phalla, Dim, Bunnet, Goyet, Sophie, Marcy, Olivier, Men, Nimul Roat, Pheng, Phearavin, Ramsay, Susan, Suom, Sophea, Tarantola, Arnaud, Te, Naisim, Than, Sreymom, Ung, Sovannary, Chhuk, Chorn, Huot, Chantheany, Kath, Sang Han, Khin, Sokoeun, Kim, Peou, Lim, Kim Eng, Lim, Phary, Lim, Vannareth, Nav, Yany, Pich, Boren, Tuy, Sotharin, Ung, Vibol, Chea, Phal, Chhraing, Sengtray, Chuop, Bophal, Hem, Ramy, Heng, Phanoeurn, Huon, Seng Hap, Khum, Sokhorn, Liv, Thear, Ly, Vichea, Moch, Makara, Neou, Leakheana, Rey, Phanith, Sath, Vina, Sun, Nopheavann, Chat, Pheron, Srey, Viso, Chheang, Sitha, Hor, Putchhat, Oum, Manory, Keo, Monorea, Kou, Sokchea, Cheng, Sokleaph, Kerleguer, Alexandra, Gomgnimbou, Michel, Kabore, Antoinette, Millogo, Anselme, Nacro, Boubacar, Nikiema, Zakari, Ouedraogo, Abdul Salam, Saidou, Sawadogo, Nouctara, Moumini, Sangare/Ouattara, Diane Ursule, Sanogo, Bintou, Sib Sié, Edgard, Zingué, Dézémon, Abiguide, Roger Ngoya, Assene Ngo'o, Patrice, Ateba Ndongo, Francis, Balla, Suzanne, Bolyse Mbouchong, Verlaine, Ehongo Amanya, Jean Marie, Eyangoh, Sara, Kaiyven, Afi Leslie, Koki Ndombo, Paul, Kokola Bayanak, Samuel Walter, Mapah Kampaing, Marie Josée, Mangoya, Elizabeth, Mvogo, Minkala, Ndongo, Jean Pierre, Ngassam, Laurence, Nanda, Francine, Ndjantou, Sylviane, Ndongo, Jean Audrey, Njind Nkoum, Marcelle, Njom Lend, Anne Esther, Nkembe, Angeline, Oyanche, Marie Flore, Taguebue, Jean-Voisin, Tejiokem, Mathurin, Tetang-Moyo, Suzy, Zebaze, Sylvie Georgette, Nguyen, Thi Oanh, Nguyen, Thi Ngoc Lan, Quillet, Catherine, Quoc, Khanh Lê, To, My Huong, Tran, Thi Kim Phung, Do, Chau Giang, Nguyen, Duc Bang, Nguyen, Ngo Vi Vi, Nguyen, Thi Hieu, Nguyen, Thi Thanh Thanh, Tran, Ngoc Duong, Vo, Duy An, Dang, Thi Xuan Lan, Do, Thi Kim Phuong, Dang, Thi Thanh Tuyen, Nguyen, Hoang Chau, Pham, Ngoc Tuong Vy, Truong, Huu Khanh, Do, Chau Viet, Huynh, Bich Ngoc, Le, Thi Thanh Thuy, Nguyen, Thi Thu Hiep, Tran, Ngoc Luu, Vu, Thien An, Tran, Huu Loc, Nguyen, Manh Hoang, Nguyen, Ngoc Lan, Van Nguyen, Thi Cao, Pham, Thu Hang, Phan, Dinh Quyen, Vo, Thi Ha, Truong, Xuan Lien, Vu, Xuan Thinh, Blanche, Stéphane, Delacourt, Christophe, Berteloot, Laureline, Carcelain, Guislaine, Godreuil, Sylvain, Fournier-Nicolle, Isabelle, Msellati, Philippe, Truong Huu, Khanh, Do Chau, Viet, Tran Ngoc, Duong, Ateba-Ndongo, Francis, Tetang-Ndiang, Suzie, and Neou, Leakhena
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- 2018
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9. Expression analysis of the recombinant 'Catharanthus roseus' deacetylvindoline 4-O-acetyl transferase in tobacco plants
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Bui, Thi Ha, Nguyen, Thi Ngoc Lan, Nguyen, Thi Tam, Van Son, Le, and Hoang Mau, Chu
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- 2018
10. Overexpression of the ZmDEF1 gene increases the resistance to weevil larvae in transgenic maize seeds
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Vi, Thi Xuan Thuy, Nguyen, Thi Ngoc Lan, Pham, Thi Thanh Nhan, Nguyen, Huu Quan, Nguyen, Thi Hai Yen, Tu, Quang Tan, Le, Van Son, and Chu, Hoang Mau
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- 2019
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11. Performance of the TB-LAMP diagnostic assay in reference laboratories: Results from a multicentre study
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Thu Hang Pham, Jonathan Peter, Fernanda C.Q. Mello, Tommy Parraga, Nguyen Thi Ngoc Lan, Pamela Nabeta, Eloise Valli, Tatiana Caceres, Keertan Dheda, Susan E. Dorman, Doris Hillemann, Christen M. Gray, and Mark D. Perkins
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Infectious and parasitic diseases ,RC109-216 - Abstract
Objective: To evaluate the diagnostic performance of TB-LAMP, a manual molecular tuberculosis (TB) detection method, and provide comparison to the Xpert MTB/RIF assay. Methods: In a large multicentre study, two sputum samples were collected from participants with TB symptoms in reference laboratories in Peru, South Africa, Brazil, and Vietnam. Each sample was tested with TB-LAMP. The reference standard consisted of four direct smears, four cultures, and clinical and radiological findings. Individuals negative on conventional tests were followed up after 8 weeks. The Xpert MTB/RIF assay was performed on fresh or frozen samples as a molecular test comparison. Results: A total of 1036 adults with suspected TB were enrolled. Among 375 culture-confirmed TB cases with 750 sputum samples, TB-LAMP detected 75.6% (95% confidence interval (CI) 71.8–79.4%), including 97.9% (95% CI 96.4–99.4%) of smear-positive TB samples and 46.6% (95% CI 40.6–52.7%) of smear-negative TB samples. Specificity in 477 culture-negative participants not treated for TB (954 sputum samples) was 98.7% (95% CI 97.9–99.6%). TB-LAMP test results were indeterminate in 0.3% of cases. Conclusions: TB-LAMP detects nearly all smear-positive and half of smear-negative TB cases and has a high specificity when performed in reference laboratories. Performance was similar to the Xpert MTB/RIF assay. Keywords: Mycobacterium tuberculosis, Polymerase chain reaction, Clinical trials
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- 2018
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12. Bacterial risk factors for treatment failure and relapse among patients with isoniazid resistant tuberculosis
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Phan Vuong Khac Thai, Dang Thi Minh Ha, Nguyen Thi Hanh, Jeremy Day, Sarah Dunstan, Nguyen Thi Quynh Nhu, Vo Sy Kiet, Nguyen Huu Lan, Nguyen Huy Dung, Nguyen Thi Ngoc Lan, Nguyen Thuong Thuong, Nguyen Ngoc Lan, Phạm Thị Thúy Liễu, Nguyễn Thị Hồng, Đào Công Điệp, Nguyễn Thị Kim Thanh, Nguyễn Văn Hội, Nguyễn Văn Nghĩa, Trương Ngọc Đại, Hoàng Quang Minh, Nguyễn Văn Thơm, Jeremy Farrar, and Maxine Caws
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Tuberculosis ,Isoniazid ,Resistance ,Multidrug resistance ,Treatment ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Drug resistant tuberculosis (TB) is increasing in prevalence worldwide. Treatment failure and relapse is known to be high for patients with isoniazid resistant TB treated with standard first line regimens. However, risk factors for unfavourable outcomes and the optimal treatment regimen for isoniazid resistant TB are unknown. This cohort study was conducted when Vietnam used the eight month first line treatment regimen and examined risk factors for failure/relapse among patients with isoniazid resistant TB. Methods Between December 2008 and June 2011 2090 consecutive HIV-negative adults (≥18 years of age) with new smear positive pulmonary TB presenting at participating district TB units in Ho Chi Minh City were recruited. Participants with isoniazid resistant TB identified by Microscopic Observation Drug Susceptibility (MODS) had extended follow-up for 2 years with mycobacterial culture to test for relapse. MGIT drug susceptibility testing confirmed 239 participants with isoniazid resistant, rifampicin susceptible TB. Bacterial and demographic factors were analysed for association with treatment failure and relapse. Results Using only routine programmatic sputum smear microscopy for assessment, (months 2, 5 and 8) 30/239 (12.6%) had an unfavourable outcome by WHO criteria. Thirty-nine patients were additionally detected with unfavourable outcomes during 2 year follow up, giving a total of 69/239 (28.9%) of isoniazid (INH) resistant cases with unfavourable outcome by 2 years of follow-up. Beijing lineage was the only factor significantly associated with unfavourable outcome among INH-resistant TB cases during 2 years of follow-up. (adjusted OR = 3.16 [1.54–6.47], P = 0.002). Conclusion One third of isoniazid resistant TB cases suffered failure/relapse within 2 years under the old eight month regimen. Over half of these cases were not identified by standard WHO recommended treatment monitoring. Intensified research on early identification and optimal regimens for isoniazid resistant TB is needed. Infection with Beijing genotype of TB is a significant risk factor for bacterial persistence on treatment resulting in failure/relapse within 2 years. The underlying mechanism of increased tolerance for standard drug regimens in Beijing genotype strains remains unknown.
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- 2018
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13. The impact of COVID-19 and other factors on the usage status of the biologic drug therapies for rheumatoid arthritis: A study from Vietnam
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Bui, Hai-Binh, primary, Lai, Hong-Thinh, additional, Nguyen, Thanh-Lam, additional, Vu, Thuy-Duong, additional, Bui, Nhat-Le, additional, Nguyen, Van-Hung, additional, Tran, Thi-To-Chau, additional, Nguyen, Thi-Phuong-Thuy, additional, Nguyen, Thi-Ngoc-Lan, additional, Al-Tawfiq, Jaffar A., additional, and Chu, Dinh-Toi, additional
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- 2023
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14. Impact of Internal Control on the Quality of Accounting Information at Enterprises Listed on the Stock Market in Vietnam
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Nguyen, Thi Ngoc Lan, Vu, Thi Kim Anh, and Bui, Thi Ngoc
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Vietnam ,Listed Companies ,Accounting Information ,Internal Control ,Quality - Abstract
Purpose: This study is intended to show the impact of internal control on the quality of accounting information at companies listed on the stock market in Vietnam. Theoretical framework: We using the multivariate linear regression model between the five independent variables according to five components of internal control in the framework of the COSO 2013 and the dependent variable - accounting information quality according with four attributes namely: appropriateness, reliability, consistency and comparability, completeness and ease of understanding which was presented Susanto in 2016. Design/methodology/approach: Quantitative research methods are used through questionnaires sent to directors and chief accountants of enterprises. The sample size is 193 valid questionnaires for the period from 2021-2022. Statistical analysis tools, testing the reliability of the scale, exploratory factor analysis, and multiple linear regression are used to evaluate the impact of internal control on the quality of accounting information. Findings: The research results have proved that all hypotheses are accepted and internal control factors have a positive impact on the usefulness of accounting information. In which, the control environment variable has the strongest impact with the coefficient β5 = 0.276, followed by the monitoring activity variable with the coefficient β5 = 0.258. The risk assessment variable has the impact level of β2 = 0.201; the information, communication and control variables have the lowest impact with the coefficients of β4 = 0.175 and β3 = 0.141, respectively. Research, Practical & Social implications: The study has provided a basis to confirm the relationship and direction of impact of internal control on the quality of accounting information at companies listed on the stock market in Vietnam. Thereby, this research gives some recommendations for improving the internal control of enterprises in order to improve the quality of accounting information. Originality/value: The findings reveal that the quality of internal control plays an important role in increasing the quality of accounting information, ensuring the safety of enterprises' assets, reducing financial fraud, and improving risk prevention.
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- 2023
15. A case report of the first hereditary transthyretin cardiac amyloidosis diagnosed in Vietnam
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Duong Thu Anh, Nguyen Thi Ngoc Lan, and Le Manh Ha
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Amyloid cardiomyopathy is a cardiovascular disease characterized by infiltration of amyloid into the heart muscle and other organs in the body, triggering impaired function of the heart and other organs. There are three main subtypes of amyloidosis including primary or AL amyloidosis, secondary or AA amyloidosis and hereditary or familial amyloidosis. Hereditary amyloidosis is less common, caused by an autosomal-dominant mutation most frequently in the transthyretin gene and has a more favorable prognosis.1,3 In this paper, we will be looking into a rare case of hereditary transthyretin amyloid disease with a genetic mutation (mutant TransThyRetin Amyloidosis - ATTRm), the first to be reported in Vietnam. That is a 47-year-old Vietnamese man with various clinical manifestations, including gastrointestinal disturbances (diarrhea, watery stool), periorbital purpura, macroglossia, autonomic neuropathy (dizziness, orthostatic hypotension, limb numbness, faint), and cardiovascular symptoms (dyspnea, leg edema, severe heart arrhythmias). The patient has a notable family history of many members appeared to have shown signs of the same disease and passed on without a diagnosis. A multimodality team in hematology, nuclear medicine, genetics, dermatology, and cardiology was assigned to the patient. We concluded that the patient was suffering from a form of ATTRm with a different genetic mutation from the common gene mutation in the world. Our patient is currently enrolled in a research program with a pharmaceutical manufacturer providing specific treatment and free medication. He is responding well to treatment and has shown signs of improvement.
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- 2022
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16. Molecular analysis of pyrazinamide resistance in Mycobacterium tuberculosis in Vietnam highlights the high rate of pyrazinamide resistance-associated mutations in clinical isolatesPncA mutations and PZA resistance in M. tuberculosis in Vietnam
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Nguyen Quang Huy, Contamin Lucie, Tran Thi Thanh Hoa, Nguyen Van Hung, Nguyen Thi Ngoc Lan, Nguyen Thai Son, Nguyen Viet Nhung, Dang Duc Anh, Bañuls Anne-Laure, and Nguyen Thi Van Anh
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MIRU-VNTR ,multidrug resistance ,pncA mutation ,pyrazinamide resistance ,Mycobacterium tuberculosis family ,sequencing ,Infectious and parasitic diseases ,RC109-216 ,Microbiology ,QR1-502 - Abstract
Pyrazinamide (PZA) is a key antibiotic in current anti-tuberculosis regimens. Although the WHO has stressed the urgent need to obtain data on PZA resistance, in high tuberculosis burden countries, little is known about the level of PZA resistance, the genetic basis of such resistance or its link with Mycobacterium tuberculosis families. In this context, this study assessed PZA resistance through the molecular analysis of 260 Vietnamese M. tuberculosis isolates. First-line drug susceptibility testing, pncA gene sequencing, spoligotyping and mycobacterial interspersed repetitive units-variable number of tandem repeats (MIRU-VNTR) typing were performed. Overall, the pncA mutation frequency was 38.1% (99 out of 260 isolates) but was higher than 72% (89 out of 123 isolates) in multidrug and quadruple-drug resistant isolates. Many different pncA mutations (71 types) were detected, of which 55 have been previously described and 50 were linked to PZA resistance. Among the 16 novel mutations, 14 are likely to be linked to PZA resistance because of their mutation types or codon positions. Genotype analysis revealed that PZA resistance can emerge in any M. tuberculosis cluster or family, although the mutation frequency was the highest in Beijing family isolates (47.7%, 62 out of 130 isolates). These data highlight the high rate of PZA resistance-associated mutations in M. tuberculosis clinical isolates in Vietnam and bring into question the use of PZA for current and future treatment regimens of multidrug-resistant tuberculosis without PZA resistance testing.Emerging Microbes & Infections (2017) 6, e86; doi:10.1038/emi.2017.73; published online 11 October 2017
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- 2017
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17. Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆
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Nguyen Minh Nhat, Le Thanh Dat, Nguyen Bao Viet, Nguyen Thi Ngoc Lan, Pioch Daniel, and Mai Huynh Cang
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tamanu ,crude oil ,deresination ,degumming ,neutralization ,bleaching ,Oils, fats, and waxes ,TP670-699 - Abstract
Tamanu (Calophyllum inophyllum L.) oil is a non-food oil used in traditional medicine, and with potential applications in the pharmaceutical and cosmetic industry. However, this oil, obtained by pressing the nuts, is being used as crude oil, in spite of a variable but large amount of non-lipids (called resin) being entrained. Although these should not be seen as impurities owing to their known bioactivity in many fields, not only they are responsible for the poisonous nature impeding human consumption in addition to bad smell, but they contribute to the poor oil quality, especially low stability and associated short shelf life. The present study aimed at purifying a crude tamanu oil sample through a combination of simple steps: deresination with ethanol, degumming using hot water, neutralization (KOH), bleaching with activated carbon, and deodorization. Ethanol 96% was more efficient for deresinating, compared to methanol, resulting in the extraction of 44–46% w/w of resin within 10 min (temperature 40 °C; oil:ethanol 1:1.5 w/v). Oil quality was checked in the industrial crude sample and in the fully refined product. The applied process strongly improved the color from dark brown to light golden yellow, decreased the acid value (62 down to 0.11 mgKOH/g of oil), and the viscosity (181 to 130 mPa.s). The saponification value was lowered from 206 to 180 mgKOH/g oil. The peroxide value was only slightly lowered from 85 to 55 mgO2/kg oil, thus pointing out the peculiar chemical nature of tamanu oil. Improving this important quality parameter would require additional research work, together with fine-tuned optimization of experimental conditions for a panel of crude oil samples; this was out of the scope of present work. This preliminary study shows that refining steps widely applied at industrial scale could help improving the quality of tamanu oil – an underused natural feedstock – for enhanced application in health and cosmetic fields.
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- 2021
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18. Green removal of unpleasant volatiles from soapberry (Sapindus mukorossi) extracts by two-phase microbial fermentation fortified with pomelo peel waste
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Nguyen, Quoc-Duy, primary, La, Quoc-Duy, additional, Nguyen, Nhu-Ngoc, additional, and Nguyen, Thi-Ngoc-Lan, additional
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- 2023
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19. UHPLC‐Q‐TOF‐MS/MS Dereplication to Identify Chemical Constituents of Hedera helix Leaves in Vietnam
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Pham, Hong Ngoc, primary, Tran, Chieu An, additional, Trinh, Thi Diep, additional, Nguyen Thi, Ngoc Lan, additional, Tran Phan, Huynh Nhu, additional, Le, Van Nhan, additional, Le, Ngoc Hung, additional, and Phung, Van Trung, additional
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- 2022
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20. Research on microwave‐assisted extraction with blanching pretreatment effect on bioactive compounds of green tea leaves ( Camellia sinensis ) powder
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Dong Thi Anh Dao, Nguyen Thi Ngoc Lan, Ly Thi Minh Hien, and Do Viet Ha
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General Chemical Engineering ,General Chemistry ,Food Science - Published
- 2022
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21. Feasibility of the TBDx automated digital microscopy system for the diagnosis of pulmonary tuberculosis.
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Pamela Nabeta, Joshua Havumaki, Dang Thi Minh Ha, Tatiana Caceres, Pham Thu Hang, Jimena Collantes, Nguyen Thi Ngoc Lan, Eduardo Gotuzzo, and Claudia M Denkinger
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Medicine ,Science - Abstract
BACKGROUND:Improved and affordable diagnostic or triage tests are urgently needed at the microscopy centre level. Automated digital microscopy has the potential to overcome issues related to conventional microscopy, including training time requirement and inconsistencies in results interpretation. METHODS:For this blinded prospective study, sputum samples were collected from adults with presumptive pulmonary tuberculosis in Lima, Peru and Ho Chi Minh City, Vietnam. TBDx performance was evaluated as a stand-alone and as a triage test against conventional microscopy and Xpert, with culture as the reference standard. Xpert was used to confirm positive cases. FINDINGS:A total of 613 subjects were enrolled between October 2014 and March 2015, with 539 included in the final analysis. The sensitivity of TBDx was 62·2% (95% CI 56·6-67·4) and specificity was 90·7% (95% CI 85·9-94·2) compared to culture. The algorithm assessing TBDx as a triage test achieved a specificity of 100% while maintaining sensitivity. INTERPRETATION:While the diagnostic performance of TBDx did not reach the levels obtained by experienced microscopists in reference laboratories, it is conceivable that it would exceed the performance of less experienced microscopists. In the absence of highly sensitive and specific molecular tests at the microscopy centre level, TBDx in a triage-testing algorithm would optimize specificity and limit overall cost without compromising the number of patients receiving up-front drug susceptibility testing for rifampicin. However, the algorithm would miss over one third of patients compared to Xpert alone.
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- 2017
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22. QUALITY IMPROVEMENT OF HUMAN RESOURCES IN BINH PHUOC PROVINCE IN THE CONTEXT OF URBAN GOVERNMENT DEVELOPMENT
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Nguyen Thi Ngoc Lan Le
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- 2021
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23. The measurement of muccessful management via a net profit maximization model with ten factors and financial accounting disclosure policy- case of vinamilk in F&B industry in Vietnam
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Le Thi Viet Nga, Do Minh Thuy, Dinh Tran Ngoc Huy, Nguyen Thi Ngoc Lan, and Ly Lan Yen
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Inflation ,Net profit ,Leverage (finance) ,business.industry ,media_common.quotation_subject ,05 social sciences ,Risk-free interest rate ,050301 education ,Monetary economics ,Investment (macroeconomics) ,Exchange rate ,0502 economics and business ,Accounting information system ,Economics ,Financial accounting ,050207 economics ,business ,0503 education ,media_common - Abstract
When a firm has better disclosure policy of financial accounting information it will attract more investment. Many factors affecting accounting information disclosure policy include firm size, leverage, industry characteristics, investor types, etc. And good financial accounting data disclosure will help to reduce risk level of firms. At micro level, cost and net sale factors will affect net profit while at macro levels, risk free rate and exchange rate will impact. According to Nikkei Asian Review, Vinamilk (VNM) is the only brand in F&B industry and the domestic industry leader which ranked 25th among 300 listed companies in the List of ASIA300 Power Performers. It leads the organic trend in milk industry and has made very positive contributions to the overall achievements of economic and social values. Good business management requires us to consider the impacts of multi macro and micro factors on net profit, both internal and external factors, and it contributes to promoting business plan and economic policies for economic growth and stabilizing business operation. By data collection method through statistics, analysis, synthesis, comparison, quantitative analysis to generate qualitative comments and discussion; using econometric method to perform regression equation and evaluate quantitative results, the article analyzed and evaluated the impacts of ten (10) macroeconomic factors such as: stock price, VNIndex, risk free rate, lending rate, cost, sale, inflation, GPD growth, S&P500, exchange rate, etc. on net profit of a leading milk listed company, Vinamilk (VNM) in Vietnam in the 10-year period of 2010-2019, both positive and negative sides. From that regression model and analysis, it will draw leadership features, strengths of this industrial leader. The results of quantitative research, in a ten factor model, show that the decrease in GDP growth and risk free rate, inflation and increase in net sale will have a significant effect and increase VNM net profit, with the highest impact coefficient, the second is decreasing cost. This research finding and recommended policy also can be used as reference in policy for F&B system in many developing countries.
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- 2020
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24. Plans for better business performance of Sony in Japan - and suggestions for management and financial accounting transparency
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Dinh Tran Ngoc Huy, Nguyen Thi Ngoc Lan, Nguyen Duy Dat, Nguyen Tien Dung, Ly Lan Yen, and Pham Minh Dat
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Net profit ,Market interest rate ,lcsh:Personnel management. Employment management ,media_common.quotation_subject ,n1 ,GeneralLiterature_MISCELLANEOUS ,0502 economics and business ,Macro level ,Quality (business) ,Financial accounting ,lending rate ,050207 economics ,Risk management ,media_common ,Finance ,business.industry ,m21 ,05 social sciences ,lcsh:HF5549-5549.5 ,050301 education ,sony net profit ,market interest rate ,Transparency (graphic) ,stock price ,Business ,0503 education ,Reputation - Abstract
Through years Sony In Japan has shown success in bringing to the market high quality products, and via technical inventions. Today risk management is one of vital issues in Sony to maintain its reputation in global markets. The purpose of this study is to find out impacts of economic factors at macro level on net profit of a big technological giant like Sony. We found that movement of net profit in big firms such as Sony will reflect the business health of technology system and the whole economy. The results of quantitative research, in a seven factor model, show that the increase in inflation, GDP (increasing too much) and lending rate and reducing risk free rate has a significant effect on reducing Sony net profit with the highest impact coefficient, the second is decreasing the exchange rate. Last but not least, this study proposes risk management solutions and business management plans to lower business risks, cost and enhance its net profit.
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- 2020
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25. A Polymorphism in Toll-Interleukin 1 Receptor Domain Containing Adaptor Protein Is Associated with Susceptibility to Meningeal Tuberculosis
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Hawn, Thomas R., Dunstan, Sarah J., Thwaites, Guy E., Simmons, Cameron P., Nguyen Thuong, Thuong, Nguyen Thi Ngoc, Lan, Hoang Thi, Quy, Tran Thi Hong, Chau, Nguyen T., Hieu, Rodrigues, Stephanie, Janer, Marta, Zhao, Lue Ping, Tran Tinh, Hien, Farrar, Jeremy J., and Aderem, Alan
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- 2006
26. HIV and Tuberculosis in Ho Chi Minh City, Vietnam, 1997–2002
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Tran Ngoc Buu, Rein M.G.J. Houben, Hoang Thi Quy, Nguyen Thi Ngoc Lan, Martien W. Borgdorff, and Frank G.J. Cobelens
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tuberculosis ,HIV ,Vietnam ,epidemiology ,substance abuse ,injection ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
In Ho Chi Minh City, Vietnam, reporting rates for tuberculosis (TB) are rising in an emerging HIV epidemic. To describe the HIV epidemic among TB patients and quantify its impact on rates of reported TB, we performed a repeated cross-sectional survey from 1997 through 2002 in a randomly selected sample of inner city TB patients. We assessed effect by adjusting TB case reporting rates by the fraction of TB cases attributable to HIV infection. HIV prevalence in TB patients rose exponentially from 1.5% to 9.0% during the study period. Young (
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- 2007
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27. IMPACT FACTORS IN THE BUILDING OF SMART URBAN GOVERNMENT IN DONG XOAI CITY, BINH PHUOC PROVINCE, VIETNAM
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Le Nguyen, Thi Ngoc Lan, primary
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- 2022
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28. Randomised pharmacokinetic trial of rifabutin with lopinavir/ritonavir-antiretroviral therapy in patients with HIV-associated tuberculosis in Vietnam.
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Nguyen Thi Ngoc Lan, Nguyen Thi Nguyet Thu, Aurélie Barrail-Tran, Nguyen Hong Duc, Nguyen Ngoc Lan, Didier Laureillard, Truong Thi Xuan Lien, Laurence Borand, Catherine Quillet, Catherine Connolly, Dominique Lagarde, Alexander Pym, Christian Lienhardt, Nguyen Huy Dung, Anne-Marie Taburet, and Anthony D Harries
- Subjects
Medicine ,Science - Abstract
Rifampicin and protease inhibitors are difficult to use concomitantly in patients with HIV-associated tuberculosis because of drug-drug interactions. Rifabutin has been proposed as an alternative rifamycin, but there is concern that the current recommended dose is suboptimal. The principal aim of this study was to compare bioavailability of two doses of rifabutin (150 mg three times per week and 150 mg daily) in patients with HIV-associated tuberculosis who initiated lopinavir/ritonavir-based antiretroviral therapy in Vietnam. Concentrations of lopinavir/ritonavir were also measured.This was a randomized, open-label, multi-dose, two-arm, cross-over trial, conducted in Vietnamese adults with HIV-associated tuberculosis in Ho Chi Minh City (Clinical trial registry number NCT00651066). Rifabutin pharmacokinetics were evaluated before and after the introduction of lopinavir/ritonavir -based antiretroviral therapy using patient randomization lists. Serial rifabutin and 25-O-desacetyl rifabutin concentrations were measured during a dose interval after 2 weeks of rifabutin 300 mg daily, after 3 weeks of rifabutin 150 mg daily with lopinavir/ritonavir and after 3 weeks of rifabutin 150 mg three times per week with lopinavir/ritonavir.Sixteen and seventeen patients were respectively randomized to the two arms, and pharmacokinetic analysis carried out in 12 and 13 respectively. Rifabutin 150 mg daily with lopinavir/ritonavir was associated with a 32% mean increase in rifabutin average steady state concentration compared with rifabutin 300 mg alone. In contrast, the rifabutin average steady state concentration decreased by 44% when rifabutin was given at 150 mg three times per week with lopinavir/ritonavir. With both dosing regimens, 2 - 5 fold increases of the 25-O-desacetyl- rifabutin metabolite were observed when rifabutin was given with lopinavir/ritonavir compared with rifabutin alone. The different doses of rifabutin had no significant effect on lopinavir/ritonavir plasma concentrations.Based on these findings, rifabutin 150 mg daily may be preferred when co-administered with lopinavir/ritonavir in patients with HIV-associated tuberculosis.ClinicalTrials.gov NCT00651066.
- Published
- 2014
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29. Agrobacterium tumefaciens–mediated genetic transformation and overexpression of the flavonoid 3′5′-hydroxylase gene increases the flavonoid content of the transgenic Aconitum carmichaelii Debx. plant
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Nguyen, Thi Ngoc Lan, primary, Hoang, Thi Thu Hoan, additional, Nguyen, Huu Quan, additional, Tu, Quang Tan, additional, Tran, Thi Hong, additional, Lo, Thi Mai Thu, additional, Vu, Thi Thu Thuy, additional, and Chu, Hoang Mau, additional
- Published
- 2021
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30. THE IMPACT OF THE SOLVENCY TO THE FINANCIAL INDEPENDENCE LEVEL IN LISTED COMPANIES: EVIDENCE FROM VIETNAM
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Nguyen Thi Ngoc Lan and Nguyen Van Cong
- Subjects
Solvency ,Financial independence ,Financial system ,Business - Abstract
The research focuses on the relationship between solvency and financial independence level of 3261 listed companies in Vietnam. To prove and analyse the influence among 5 independent variables that measure the solvency level, both EVIEW 10.0 and SPSS version 22.0.0.0 were used. The 5 independent variables mentioned above are the general payment ability ratio, long-term payment ability, short-term payment ability, quick ratio, and financial leverage. The two dependent variables including financial autonomy and financial security represent the financial independence level of Vietnamese listed firms. The results show that financial autonomy is influenced by 89.5% of the general payment ability ratio. While general payment ability ratio is a variable that has the greatest positive influence on financial independence, neither quick ratio nor financial leverage has any impact or if there is, very little to other remaining dependent variables. From the collected results, the listed firms need to prioritize using permanent capital to invest their long-term assets instead of using short-term debts with high interest. Doing so could result in losing financial security and put the firms at risk of bankruptcy. The conclusion is that for Vietnamese firms to want to perform effectively, financial independence must be ensured first.
- Published
- 2020
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31. SUSTAINABLE CONSUMPTION BEHAVIORS OF YOUNG PEOPLE IN THE FIELD OF FOOD AND DRINKS: A CASE STUDY
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Nguyen Thi Ngoc Lan, Dinh Tran Ngoc Huy, Bui Thi Thu Loan, Nguyen Thi Hanh, and Pham Tuan Anh
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Renewable Energy, Sustainability and the Environment ,Field (Bourdieu) ,Geography, Planning and Development ,Sustainable consumption ,Business ,Safety Research ,Agricultural economics - Published
- 2020
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32. Mycobacterium tuberculosis Beijing Genotype and Risk for Treatment Failure and Relapse, Vietnam
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Nguyen Thi Ngoc Lan, Hoang Thi Kim Lien, Le B. Tung, Martien W. Borgdorff, Kristin Kremer, and Dick van Soolingen
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Mycobacterium tuberculosis ,epidemiology ,multidrug resistance ,treatment failure ,Beijing genotype ,Vietnam ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Among 2,901 new smear-positive tuberculosis cases in Ho Chi Minh City, Vietnam, 40 cases of treatment failure and 39 relapsing cases were diagnosed. All initial and follow-up Mycobacterium tuberculosis isolates of these case-patients had (nearly) identical restriction fragment length polymorphism patterns, and the Beijing genotype was a significant risk factor for treatment failure and relapse (odds ratio 2.8, 95% confidence interval 1.5 to 5.2).
- Published
- 2003
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33. Purification trials of Tamanu (Calophyllum inophyllum L.) oil
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Nguyen, Minh Nhat, Le Thanh, Dat, Nguyen, Bao Viet, Nguyen, Thi Ngoc Lan, Pioch, Daniel, Mai, Huynh Cang, Nguyen, Minh Nhat, Le Thanh, Dat, Nguyen, Bao Viet, Nguyen, Thi Ngoc Lan, Pioch, Daniel, and Mai, Huynh Cang
- Abstract
Tamanu (Calophyllum inophyllum L.) oil is a non-food oil used in traditional medicine, and with potential applications in the pharmaceutical and cosmetic industry. However, this oil, obtained by pressing the nuts, is being used as crude oil, in spite of a variable but large amount of non-lipids (called resin) being entrained. Although these should not be seen as impurities owing to their known bioactivity in many fields, not only they are responsible for the poisonous nature impeding human consumption in addition to bad smell, but they contribute to the poor oil quality, especially low stability and associated short shelf life. The present study aimed at purifying a crude tamanu oil sample through a combination of simple steps: deresination with ethanol, degumming using hot water, neutralization (KOH), bleaching with activated carbon, and deodorization. Ethanol 96% was more efficient for deresinating, compared to methanol, resulting in the extraction of 44–46% w/w of resin within 10 min (temperature 40 °C; oil:ethanol 1:1.5 w/v). Oil quality was checked in the industrial crude sample and in the fully refined product. The applied process strongly improved the color from dark brown to light golden yellow, decreased the acid value (62 down to 0.11 mgKOH/g of oil), and the viscosity (181 to 130 mPa.s). The saponification value was lowered from 206 to 180 mgKOH/g oil. The peroxide value was only slightly lowered from 85 to 55 mgO2/kg oil, thus pointing out the peculiar chemical nature of tamanu oil. Improving this important quality parameter would require additional research work, together with fine-tuned optimization of experimental conditions for a panel of crude oil samples; this was out of the scope of present work. This preliminary study shows that refining steps widely applied at industrial scale could help improving the quality of tamanu oil – an underused natural feedstock – for enhanced application in health and cosmetic fields.
- Published
- 2021
34. Expression analysis of the recombinant Catharanthus roseus deacetylvindoline 4-O-acetyl transferase in tobacco plants
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Chu Hoang Mau, Vietnam Pharmacy, Le Van Son, Nguyen Thi Ngoc Lan, Nguyen Thi Tam, and Bui Thi Ha
- Subjects
Indole alkaloid ,biology ,Plant Science ,Catharanthus roseus ,biology.organism_classification ,law.invention ,Transformation (genetics) ,Biochemistry ,law ,Recombinant DNA ,Transferase ,Agronomy and Crop Science ,Gene ,Vindoline ,Southern blot - Abstract
'Catharanthus roseus' (L.) G. Don contains about 130 types of alkaloids, including vincristine and vinblastine, which are outstanding drugs for cancer. The 'C. roseus' deacetylvindoline-4-O-acetyl transferase (CrDAT) is a key enzyme which catalyzes the second to the final reactions in the vindoline way. The low content of indole alkaloid in 'C. roseus' plants and the high cost of indole alkaloid production have promted many research to improve indole alkaloid yield in this plant. The aim of this work was to express recombinant CrDAT in tobacco, a model plant, to create the basis for the overexpression of the gene encoding CrDAT ('GenBank' LN809930) in 'C. Roseus' plants. In this study, the 35S-DAT-cmyc structure was transferred to tobacco and the transgenic tobacco lines was generated. The T1 generation was then analyzed by Western blot method and ELISA analysis. Southern blot assays confirmed that the CrDAT gene was completely introduced into tobacco genome by Agrobacterium-mediated transformation. The recombinant CrDAT protein of 51.5 kDa in size was successfully expressed at the seven transgenic tobacco lines. The recombinant CrDAT protein content of transgenic tobacco lines were 2.75 - 5.35 (mu g. mg-1 of total protein) range and the recombinant CrDAT protein content of the T0-1 line was highest (5.35 mu g. mg-1 of total protein).
- Published
- 2018
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35. Microscopic observation drug susceptibility assay (MODS) for early diagnosis of tuberculosis in children.
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Dang Thi Minh Ha, Nguyen Thi Ngoc Lan, Marcel Wolbers, Tran Ngoc Duong, Nguyen Dang Quang, Tran Thi Van Thinh, Le Thi Hong Ngoc, Nguyen Thi Ngoc Anh, Tran Van Quyet, Nguyen Thi Bich Tuyen, Vo Thi Ha, Jeremy Day, Hoang Thi Thanh Hang, Vo Sy Kiet, Nguyen Thi Nho, Dai Viet Hoa, Nguyen Huy Dung, Nguyen Huu Lan, Jeremy Farrar, and Maxine Caws
- Subjects
Medicine ,Science - Abstract
MODS is a novel liquid culture based technique that has been shown to be effective and rapid for early diagnosis of tuberculosis (TB). We evaluated the MODS assay for diagnosis of TB in children in Viet Nam. 217 consecutive samples including sputum (n = 132), gastric fluid (n = 50), CSF (n = 32) and pleural fluid (n = 3) collected from 96 children with suspected TB, were tested by smear, MODS and MGIT. When test results were aggregated by patient, the sensitivity and specificity of smear, MGIT and MODS against "clinical diagnosis" (confirmed and probable groups) as the gold standard were 28.2% and 100%, 42.3% and 100%, 39.7% and 94.4%, respectively. The sensitivity of MGIT and MODS was not significantly different in this analysis (P = 0.5), but MGIT was more sensitive than MODS when analysed on the sample level using a marginal model (P = 0.03). The median time to detection of MODS and MGIT were 8 days and 13 days, respectively, and the time to detection was significantly shorter for MODS in samples where both tests were positive (P
- Published
- 2009
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36. Dexamethasone for the treatment of tuberculous meningitis in adolescents and adults
- Author
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Thwaites, Guy E., Do Thi Tuong Oanh, Nguyen Ngoc Hai, Ca Huu Hiep, Stepniewska, Kasia, Hoang Thi Quy, Dung, Nguyen Huy, Bang, Nguyen Duc, Nguyen Tri Thuc, Nguyen Quang Hien, Nguyen Thi Cam Thoa, Vu Ngoc Tuan, Nguyen Hong Duc, Nguyen Thi Ngoc Lan, Nguyen Thi Dung, Pham Ohuing Mai, Tran Thi Hong Chau, Farrar, Jeremy J., Hien, Trari Tinh, and White, Nicholas J.
- Subjects
Youth -- Care and treatment ,Teenagers -- Care and treatment ,Dexamethasone -- Usage ,Tuberculosis -- Care and treatment - Abstract
A trial conducted among the patients of Vietnam to determine whether adjunctive treatment with dezamerhasone reduced the risk of death or severe disability after nine months of follow is presented. It was found that adjunctive treatment with dezamerhasone improves survival in patients over 14 years of age with tuberculous meningitis.
- Published
- 2004
37. Identification of tuberculosis susceptibility genes with human macrophage gene expression profiles.
- Author
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Nguyen Thuy Thuong Thuong, Sarah J Dunstan, Tran Thi Hong Chau, Vesteinn Thorsson, Cameron P Simmons, Nguyen Than Ha Quyen, Guy E Thwaites, Nguyen Thi Ngoc Lan, Martin Hibberd, Yik Y Teo, Mark Seielstad, Alan Aderem, Jeremy J Farrar, and Thomas R Hawn
- Subjects
Immunologic diseases. Allergy ,RC581-607 ,Biology (General) ,QH301-705.5 - Abstract
Although host genetics influences susceptibility to tuberculosis (TB), few genes determining disease outcome have been identified. We hypothesized that macrophages from individuals with different clinical manifestations of Mycobacterium tuberculosis (Mtb) infection would have distinct gene expression profiles and that polymorphisms in these genes may also be associated with susceptibility to TB. We measured gene expression levels of >38,500 genes from ex vivo Mtb-stimulated macrophages in 12 subjects with 3 clinical phenotypes: latent, pulmonary, and meningeal TB (n = 4 per group). After identifying differentially expressed genes, we confirmed these results in 34 additional subjects by real-time PCR. We also used a case-control study design to examine whether polymorphisms in differentially regulated genes were associated with susceptibility to these different clinical forms of TB. We compared gene expression profiles in Mtb-stimulated and unstimulated macrophages and identified 1,608 and 199 genes that were differentially expressed by >2- and >5-fold, respectively. In an independent sample set of 34 individuals and a subset of highly regulated genes, 90% of the microarray results were confirmed by RT-PCR, including expression levels of CCL1, which distinguished the 3 clinical groups. Furthermore, 6 single nucleotide polymorphisms (SNPs) in CCL1 were found to be associated with TB in a case-control genetic association study with 273 TB cases and 188 controls. To our knowledge, this is the first identification of CCL1 as a gene involved in host susceptibility to TB and the first study to combine microarray and DNA polymorphism studies to identify genes associated with TB susceptibility. These results suggest that genome-wide studies can provide an unbiased method to identify critical macrophage response genes that are associated with different clinical outcomes and that variation in innate immune response genes regulate susceptibility to TB.
- Published
- 2008
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38. The influence of host and bacterial genotype on the development of disseminated disease with Mycobacterium tuberculosis.
- Author
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Maxine Caws, Guy Thwaites, Sarah Dunstan, Thomas R Hawn, Nguyen Thi Ngoc Lan, Nguyen Thuy Thuong Thuong, Kasia Stepniewska, Mai Nguyet Thu Huyen, Nguyen Duc Bang, Tran Huu Loc, Sebastien Gagneux, Dick van Soolingen, Kristin Kremer, Marianne van der Sande, Peter Small, Phan Thi Hoang Anh, Nguyen Tran Chinh, Hoang Thi Quy, Nguyen Thi Hong Duyen, Dau Quang Tho, Nguyen T Hieu, Estee Torok, Tran Tinh Hien, Nguyen Huy Dung, Nguyen Thi Quynh Nhu, Phan Minh Duy, Nguyen van Vinh Chau, and Jeremy Farrar
- Subjects
Immunologic diseases. Allergy ,RC581-607 ,Biology (General) ,QH301-705.5 - Abstract
The factors that govern the development of tuberculosis disease are incompletely understood. We hypothesized that some strains of Mycobacterium tuberculosis (M. tuberculosis) are more capable of causing disseminated disease than others and may be associated with polymorphisms in host genes responsible for the innate immune response to infection. We compared the host and bacterial genotype in 187 Vietnamese adults with tuberculous meningitis (TBM) and 237 Vietnamese adults with uncomplicated pulmonary tuberculosis. The host genotype of tuberculosis cases was also compared with the genotype of 392 cord blood controls from the same population. Isolates of M. tuberculosis were genotyped by large sequence polymorphisms. The hosts were defined by polymorphisms in genes encoding Toll-interleukin 1 receptor domain containing adaptor protein (TIRAP) and Toll-like receptor-2 (TLR-2). We found a significant protective association between the Euro-American lineage of M. tuberculosis and pulmonary rather than meningeal tuberculosis (Odds ratio (OR) for causing TBM 0.395, 95% confidence intervals (C.I.) 0.193-0.806, P = 0.009), suggesting these strains are less capable of extra-pulmonary dissemination than others in the study population. We also found that individuals with the C allele of TLR-2 T597C allele were more likely to have tuberculosis caused by the East-Asian/Beijing genotype (OR = 1.57 [95% C.I. 1.15-2.15]) than other individuals. The study provides evidence that M. tuberculosis genotype influences clinical disease phenotype and demonstrates, for the first time, a significant interaction between host and bacterial genotypes and the development of tuberculosis.
- Published
- 2008
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39. QUALITY IMPROVEMENT OF HUMAN RESOURCES IN BINH PHUOC PROVINCE IN THE CONTEXT OF URBAN GOVERNMENT DEVELOPMENT
- Author
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Le, Nguyen Thi Ngoc Lan, primary
- Published
- 2021
- Full Text
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40. Financial Security of Vietnamese Businesses and Its Influencing Factors
- Author
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NGUYEN, Van Cong, primary and NGUYEN, Thi Ngoc Lan, additional
- Published
- 2020
- Full Text
- View/download PDF
41. A polymorphism in toll-interleukin 1 receptor domain containing adaptor protein is associated with susceptibility to meningeal tuberculosis
- Author
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Tran Tinh Hien, Marta Janer, Nguyen Thuy Thuong Thuong, Alan Aderem, Stephanie Rodrigues, Tran Thi Hong Chau, Jeremy Farrar, Nguyen Trong Hieu, Hoang Thi Quy, Nguyen Thi Ngoc Lan, Thomas R. Hawn, Lue Ping Zhao, Sarah J. Dunstan, Cameron P. Simmons, and Guy E. Thwaites
- Subjects
TIRAP ,Male ,Candidate gene ,Tuberculosis ,Black People ,Biology ,Article ,Mycobacterium tuberculosis ,Consanguinity ,Hepatitis B, Chronic ,Abdomen ,Genetic predisposition ,medicine ,Diseases in Twins ,Immunology and Allergy ,Humans ,Genetic Predisposition to Disease ,Tuberculosis, Pulmonary ,Toll-like receptor ,Innate immune system ,Polymorphism, Genetic ,Toll-Like Receptors ,Genetic Variation ,Receptors, Interleukin-1 ,Receptors, Interleukin ,Acquired immune system ,medicine.disease ,biology.organism_classification ,Infectious Diseases ,Tuberculosis, Meningeal ,Immunology ,Mutation ,Receptors, Calcitriol ,Female ,Metabolism, Inborn Errors - Abstract
Despite the discovery of the tuberculosis bacillus >100 years ago and the availability of effective drugs for >50 years, there remain a number of formidable challenges for controlling Mycobacterium tuberculosis (Mtb) infection [1]. The development of a more-effective vaccine is a high worldwide priority and depends on a thorough understanding of the host response to infection. Furthermore, tuberculosis (TB) causes different types of human disease, including localized pulmonary disease, extrapulmonary disease—such as meningitis—and miliary or disseminated disease. It is not known at present which host genetic, environmental, and bacterial virulence factors influence the different clinical presentations of TB. Tuberculous meningitis (TBM) is an especially devastating form of TB that causes death or severe neurological defici in more than one-half of persons affected [2]. Advances in genomic technology and immunology are creating new opportunities to understand the influence of human genetic variation on the pathophysiological characteristics of TB. The molecular mechanisms that influence the development of a protective immune response to Mtb are only beginning to be elucidated. A series of studies with different methodologies over the course of the past 50 years have indicated that host genetics strongly influence susceptibility to tuberculosis [3-11]. Major susceptibility loci from whole-genome methods have not yet been conclusively identified which suggests that the genetic control of susceptibility to TB is polygenic. Candidate gene-association studies of critical host response genes have successfully identified some of the genes involved in susceptibility to TB. Using candidate gene approaches, we and others have recently discovered mutations and polymorphisms in Toll-like receptor (TLR)–pathway genes that affect host susceptibility to infection [12-15]. The discovery of TLRs precipitated a major advance in understanding the molecular mechanisms of both pathogen recognition and inflammation by the innate immune system [16-18]. Human TLRs are a family of 10 proteins that differentially recognize pathogen-associated molecular patterns (PAMPs) and initiate signaling pathways that lead to the activation of the innate immune response, cytokine production, and formation of the adaptive immune response. Mycobacteria are initially recognized by TLR1, −2, −4, and −6, which, in turn, interact with the adaptor proteins MyD88 and Toll-interleukin 1 receptor (TIR) domain containing adaptor protein (TIRAP; also known as Mal) to activate macrophages and dendritic cells [19-25]. TIRAP mediates signals from these TLRs through its TIR domain, which forms a homotypic interaction with the TIR domain of the TLR [26-29]. It is not presently known whether polymorphisms in TIRAP influence susceptibility to any infection. Because of the central role that adaptor proteins play in mediating signals from TLRs that recognize Mtb, we hypothesized that polymorphisms in TIRAP are associated with susceptibility to TB. In the present article, we report the association of a TIRAP single-nucleotide polymorphism (SNP) with susceptibility to TBM and demonstrate that this polymorphism is associated with a decreased whole-blood cytokine response. To our knowledge, this is the firs reported association of a TIRAP SNP with any infection, which suggests that variants of TIRAP influence important differences in host susceptibility to TB.
- Published
- 2019
42. Expression analysis of recombinant Vigna radiata plant defensin 1 protein in transgenic tobacco plants
- Author
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Chu Hoang Mau, Le Van Son, Ho Manh Tuong, Nguyen Vu Thanh Thanh, Hoang Thi Thao, and Nguyen Thi Ngoc Lan
- Subjects
0106 biological sciences ,0301 basic medicine ,biology ,Plant defensin ,Transgene ,Plant Science ,biology.organism_classification ,01 natural sciences ,General Biochemistry, Genetics and Molecular Biology ,Microbiology ,law.invention ,Vigna ,03 medical and health sciences ,030104 developmental biology ,law ,Botany ,Gene expression ,biology.protein ,Recombinant DNA ,Amylase ,Agronomy and Crop Science ,Defensin ,Gene ,010606 plant biology & botany ,Food Science - Abstract
Bruchid resistance is regulated by defensin gene. Vigna radiata plant defensin 1 (VrPDF1) inhibits alpha-amylase activities in insect gut; therefore, insect will die of undigestion starch. VrPDF1 content in mungbean seeds is very low. Hence an increase in content of VrPDF1 in mungbean seeds leads to enhance alpha -amylase inhibition in larvae and bruchids, which is necessary for the study to improve bruchid resistance in mungbeans. This article presents the results of VrPDF1 gene expression in T1 generation transgenic tobacco seeds. It was confirmed that VrPDF1 gene was attached to genome of tobacco plants and translated to synthesize VrPDF1. Recombinant VrPDF1 protein was successfully expressed in seeds of four transgenic tobacco lines (T1-7, T1-8, T1-10, T1-11), among which T1-10 line had the highest recombinant VrPDF1 content, reaching 8.57 g mg-1 total protein. The extract containing recombinant VrPDF1 from the transgenic tobacco lines effectively inhibited the activity of alpha-amylase from the intestine of larvae and weevils. However, the protein extract solution from T1-10 line had the strongest inhibitory effect, so the activity of alpha-amylase was only 18.89% compared to controls. The analysis results of VrPDF1 gene expression in transgenic tobacco plants are fundamental to the transfer of pPhaso-dest-VrPDF1 vector into mungbean to improve bruchid resistance of mungbean and contribute to improving mungbean preservation.
- Published
- 2017
- Full Text
- View/download PDF
43. Rifampin-Resistant Mycobacterium bovis BCG–Induced Disease in HIV-Infected Infant, Vietnam
- Author
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Duc Nguyen Hong, Mai Nguyet Thu Huyen, Nguyen Thi Ngoc Lan, Nguyen Huy Duong, Vi Vi Nguyen Ngo, Duong Tran Ngoc, Khanh Truong Huu, Tuyen Nguyen, Viet Do Chau, Oliver Marcy, Philippe Van de Perre, Anne-Laure Bañuls, and Sylvain Godreuil
- Subjects
Mycobacterium bovis Bacillus Calmette-Guérin ,rifampin resistance ,BCG disease ,HIV-infected child ,Vietnam ,tuberculosis and other mycobacteria ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Published
- 2013
- Full Text
- View/download PDF
44. The Impacts of Selling Expense Structure on Enterprise Growth in Large Enterprises: A Study from Vietnam
- Author
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Nguyen, Van Cong, primary, Nguyen, Thi Ngoc Lan, additional, Pham, Thanh Hang, additional, and Vu, Song Hoa, additional
- Published
- 2019
- Full Text
- View/download PDF
45. Agrobacterium-mediated transformation of the CrDAT gene and selection of transgenic periwinkle lines with a high vincristine accumulation
- Author
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Pham, Thi Thanh Nhan, primary, Nguyen, Thi Ngoc Lan, additional, Bui, Thi Ha, additional, Nguyen, Huu Quan, additional, Nguyen, Thi Tam, additional, Le, Van Son, additional, and Chu, Hoang Mau, additional
- Published
- 2019
- Full Text
- View/download PDF
46. Thu Thiem new urban center Master plan: urban design in the direction of adapting to the natural and cultural environment
- Author
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Pham Phu Cuong, Nguyen Nguyen Song Hoan, Phan Huu Toan, and Nguyen Thi Ngoc Lan
- Subjects
Engineering ,business.industry ,lcsh:TA1-2040 ,Cultural environment ,Urban design ,Center (algebra and category theory) ,Master plan ,business ,lcsh:Engineering (General). Civil engineering (General) ,Environmental planning ,Natural (archaeology) - Abstract
The aim of this research is to analyze the Master plan of Thu Thiem new urban center of Ho Chi Minh City, showing the advantages of the project in adaptation to the natural environment and local cultural environment: to inherit and convey the characteristics of historical urban space to the new urban center, to inherit the principle of zoning and functional integration in land use, to maintain harmonious connection with the historic urban center, to arrange a "compact" plan causing no impact to the natural environment, to preserve and embellish the water environment. This research also addresses issues that need to be further researched in the implementation of the Thu Thiem master plan, to ensure the adaptability to the natural and cultural environment of the project which will be successfully applied in practice: to consolidate the characteristics of modernity of new urban architecture, to make the central square diverse and harmonious with human scale, to organize the underground space and height in accordance with the TOD development model, to study the diversity of cultures and local communities in order to plan a unique community.
- Published
- 2018
47. Overexpression of VrPDF1 gene confers resistance to weevils in transgenic mung bean plants
- Author
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Chu Hoang Mau, Le Van Son, Nguyen Thi Ngoc Lan, and Hoang Thi Thao
- Subjects
Horticulture ,Mung bean ,Resistance (ecology) ,Transgene ,fungi ,Alpha amylase inhibitor ,food and beverages ,Biology ,Gene - Abstract
Plant defensins are known for different biological functions such as insect resistance, antibacterial, antifungal and antiviral activities. The role of plant defensins against weevils is based on inhibitor of alpha-amylase activity in weevil gut, therefore, weevils can not digest starch and then die. The low content of Vigna radiata plant defensin 1 (VrPDF1) in mung bean seeds is promted researches to increase the VrPDF1content, in which leads to enhance alpha-amylase inhibition and improve bruchid resistance in mung bean. This article presents the results of overexpression of VrPDF1 gene in transgenic mung bean plants. VrPDF1 gene was successfully transferred into DX22 mung bean cultivar and expressed in T1 generation transgenic mung bean seeds. The extract containing recombinant VrPDF1 protein inhibited alpha-amylase of weevil larvae in its larval stage. The performance of alpha-amylase inhibitor of DX1-3 and DX1-7 transgenic mung bean lines increased by 166.40% and 178.19% respectively, in comparison with non-transgenic plants. The enhancement of alpha-amylase inhibitor ability of rVrPDF1 extracted from transgenic plants is scientifically fundamental to confirm the effectiveness of the application of gene technology in enhancement the ability of mung bean weevil resistance in particular and grain crops in general revenue.
- Published
- 2017
- Full Text
- View/download PDF
48. Overexpression of VrPDF1 gene confers resistance to weevils in transgenic mung bean plant
- Author
-
Hoang Thi Thao, Nguyen Thi Ngoc Lan, Le Van Son, and Chu Hoang Mau
- Subjects
fungi ,food and beverages - Abstract
Plant defensins are known for different biological functions such as insect resistance, antibacterial, antifungal and antiviral activities. The role of plant defensins against weevils is based on inhibitor of alpha-amylase activity in weevil gut, therefore, weevils can not digest starch and then die. The low content of Vigna radiata plant defensin 1 (VrPDF1) in mung bean seeds is promted researches to increase the VrPDF1content, in which leads to enhance alpha-amylase inhibition and improve bruchid resistance in mung bean. This article presents the results of overexpression of VrPDF1 gene in transgenic mung bean plants. VrPDF1 gene was successfully transferred into DX22 mung bean cultivar and expressed in T1 generation transgenic mung bean seeds. The extract containing recombinant VrPDF1 protein inhibited alpha-amylase of weevil larvae in its larval stage. The performance of alpha-amylase inhibitor of DX1-3 and DX1-7 transgenic mung bean lines increased by 166.40% and 178.19% respectively, in comparison with non-transgenic plants. The enhancement of alpha-amylase inhibitor ability of rVrPDF1 extracted from transgenic plants is scientifically fundamental to confirm the effectiveness of the application of gene technology in enhancement the ability of mung bean weevil resistance in particular and grain crops in general revenue.
- Published
- 2017
- Full Text
- View/download PDF
49. Drug resistance and Mycobacterium tuberculosis strain diversity in TB/HIV co-infected patients in Ho Chi Minh city, Vietnam
- Author
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Ben J. Marais, Vitali Sintchenko, Do Chau Giang, Trinh Quynh Mai, Nguyen Thi Van Anh, Pham Thu Hang, Nguyen Tran Hien, Nguyen Thi Ngoc Lan, and Nguyen Huu Lan
- Subjects
0301 basic medicine ,Microbiology (medical) ,Adult ,Male ,Tuberculosis ,Adolescent ,030106 microbiology ,Immunology ,Antitubercular Agents ,HIV Infections ,Drug resistance ,Microbial Sensitivity Tests ,Biology ,Microbiology ,Mycobacterium tuberculosis ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Bacterial Proteins ,Drug Resistance, Multiple, Bacterial ,Tuberculosis, Multidrug-Resistant ,medicine ,Immunology and Allergy ,Humans ,030212 general & internal medicine ,Typing ,Pentosyltransferases ,Phylogeny ,INHA ,Coinfection ,DNA-Directed RNA Polymerases ,Middle Aged ,rpoB ,medicine.disease ,biology.organism_classification ,Catalase ,Virology ,Vietnam ,Streptomycin ,Genes, Bacterial ,Mutation ,Female ,Oxidoreductases ,Rifampicin ,medicine.drug - Abstract
Background Mycobacterium tuberculosis strain diversity and drug resistance among people living with human immunodeficiency virus (HIV) in Vietnam have not been described previously. Methods We examined M. tuberculosis isolates from TB/HIV co-infected patients in Ho Chi Minh City, Vietnam. Drug susceptibility testing (DST), spoligotyping and 24-locus Mycobacterial Interspersed Repetitive Unit (MIRU-24 typing) were performed, and the rpoB, katG, inhA and inhA promoter, rpsL, rrs and embB genes were sequenced in all drug resistant isolates identified. Results In total, 84/200 (42.0%) strains demonstrated "any drug resistance"; 17 (8.5%) were multi-drug resistant (MDR). Streptomycin resistance was present in 80 (40.0%) isolates; 95.2% (80/84) with "any drug resistance" and 100% with MDR. No rifampicin monoresistance was detected. Of the rifampicin resistant strains 16/18 (88.9%) had mutations in the 81-bp Rifampicin Resistance Defining Region (RRDR) of the rpoB gene. Isoniazid resistance was mostly associated with Ser315Thr mutations in the katG gene (15/17; 88.2%). Beijing (49.0%) and East African Indian (EAI) lineage strains (35.0%; 56/70 EAI-5) were most common. Conclusion TB/HIV co-infection in Vietnam was associated with high rates of TB drug resistance, although we were unable to differentiate new from retreatment cases.
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- 2017
50. Feasibility of the TBDx automated digital microscopy system for the diagnosis of pulmonary tuberculosis
- Author
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Pham Thu Hang, Tatiana Cáceres, Claudia M. Denkinger, Eduardo Gotuzzo, Nguyen Thi Ngoc Lan, Dang Thi Minh Ha, Joshua Havumaki, Pamela Nabeta, and Jimena Collantes
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Bacterial Diseases ,Physiology ,lcsh:Medicine ,Computer Architecture ,Automation ,0302 clinical medicine ,Fluorescence Microscopy ,Medicine and Health Sciences ,030212 general & internal medicine ,Prospective Studies ,Prospective cohort study ,lcsh:Science ,Microscopy ,Multidisciplinary ,biology ,Light Microscopy ,Body Fluids ,Actinobacteria ,Professions ,Infectious Diseases ,Vietnam ,Engineering and Technology ,Tuberculosis Diagnosis and Management ,medicine.symptom ,Anatomy ,Microscopy/methods ,medicine.drug ,Digital microscopy ,Research Article ,medicine.medical_specialty ,Computer and Information Sciences ,Tuberculosis ,030231 tropical medicine ,Tuberculosis, Pulmonary/diagnosis ,Research and Analysis Methods ,Sensitivity and Specificity ,Mycobacterium tuberculosis ,03 medical and health sciences ,Pulmonary tuberculosis ,Diagnostic Medicine ,medicine ,Humans ,Tuberculosis, Pulmonary ,Bacteria ,business.industry ,lcsh:R ,Sputum ,Organisms ,Biology and Life Sciences ,medicine.disease ,biology.organism_classification ,Tropical Diseases ,Computer Hardware ,Technicians ,Triage ,Diodes ,Mucus ,purl.org/pe-repo/ocde/ford#3.02.07 [https] ,Emergency medicine ,People and Places ,Feasibility Studies ,lcsh:Q ,Population Groupings ,Electronics ,business ,Light-Emitting Diodes ,Rifampicin ,Mycobacterium Tuberculosis - Abstract
Background Improved and affordable diagnostic or triage tests are urgently needed at the microscopy centre level. Automated digital microscopy has the potential to overcome issues related to conventional microscopy, including training time requirement and inconsistencies in results interpretation. Methods For this blinded prospective study, sputum samples were collected from adults with presumptive pulmonary tuberculosis in Lima, Peru and Ho Chi Minh City, Vietnam. TBDx performance was evaluated as a stand-alone and as a triage test against conventional microscopy and Xpert, with culture as the reference standard. Xpert was used to confirm positive cases. Findings A total of 613 subjects were enrolled between October 2014 and March 2015, with 539 included in the final analysis. The sensitivity of TBDx was 62·2% (95% CI 56·6–67·4) and specificity was 90·7% (95% CI 85·9–94·2) compared to culture. The algorithm assessing TBDx as a triage test achieved a specificity of 100% while maintaining sensitivity. Interpretation While the diagnostic performance of TBDx did not reach the levels obtained by experienced microscopists in reference laboratories, it is conceivable that it would exceed the performance of less experienced microscopists. In the absence of highly sensitive and specific molecular tests at the microscopy centre level, TBDx in a triage-testing algorithm would optimize specificity and limit overall cost without compromising the number of patients receiving up-front drug susceptibility testing for rifampicin. However, the algorithm would miss over one third of patients compared to Xpert alone.
- Published
- 2017
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