1.Up-regulate Heparansulfate Interacting Protein (HIP) transcript in breast cancer tissues
Minh Thi Tuyen Dang ; Khanh Van Tran ; Ha Thi Nguyen ; Van Thanh Ta
Journal of Medical Research 2008;0(1):8-15
Background: Heparansulfate Interacting Protein (HIP) is a protein that belongs to a novel class of heparin and heparansulfate binding protein. It plays an important role in extracellular matrix structure and function, cell-cell and cell-extracellular matrix adhesion, growth and differentiation. HIP was shown to be expressed in normal epithelia and epithelial cell lines at both mRNA and protein levels. Especially, HIP was found to be up-regulated in some cancer cell lines and related to different status and metastasis.\r\n', u'Objectives: To determinate HIP transcript level of mRNA in breast cancer tissues in comparison with normal tissues; to compare HIP transcript level at different cancer stages and cancer cell types. \r\n', u'Subjects and method: Total RNA was isolated from 62 tissue samples (47 breast cancer and 15 normal tissues); cDNA synthesis by reverse transcript \u2013polymerase chain reaction (RT \u2013 PCR); determination of HIP transcript using semi-quantitative RT \u2013 PCR. \r\n', u'Results: HIP transcript was particularly up \u2013 regulated in breast cancer tissues compared to normal tissues, especially this up-regulated in cancer tissues at different stages of development and cancer cell types. \r\n', u'Conclusion: These results show that the HIP transcript level was different between breast cancer and normal tissues and its expression was related to different status and metastasis in human cancer cell lines. HIP may be used as a prognostic marker for breast cancer.\r\n', u'
Heparansulfate Interacting Protein (HIP)
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breast cancer
2.Cloning of the gene encoding human recombinant blood \u2013 coagulation factor WIII
Thuy Thu Nguyen ; Khanh Van Tran ; Khoa Dang Pham ; Van Thanh Ta
Journal of Medical Research 2008;58(5):7-12
Background: Hemophilia A is a genetic bleeding disorder that results from a deficiency in factor VIII. The prevalence of Hemophilia in Vietnam is rather high (2/34830 people) and Vietnam has high usage demand for factor VIII in the treatment and prevention of the disease. Therefore, it is necessary to study and produce recombinant blood \u2013 coagulation factor WIII. Objective: To clone successfully A1A2 and A3C2 gen fragment encoding factor VIII. Subject and Method: Amplify A1A2 and A3C2 gene fragments by PCR from human cDNA. PCR products were ligated into cloning vector pQE \u2013 30UA. Recombinant plasmids were transformed into E.coli DH5 alpha host strain. Inserted A1A2 and A3C2 gene fragments were checked by PCR and restriction enzymes. Result: Successfully amplifying functional gene fragments encoding factor VIII using specific primers. Conclusion: Obtaining pQE \u2013 30UA vector carrying A1A2 and A3C2 fragments encoding factor VIII. This is the premise result for the next studies on synthesis of recombinant factor WIII and application of genetic therapy.
Hemophilia
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Blood \u2013 coagulation factor VIII
3.Epidermal growth factor receptor (EGFR) transcript level in breast cancer tissues
Minh Thi Tuyet Dang ; Khanh Van Tran ; Chinh Thi Tran ; Van Thanh Ta
Journal of Medical Research 2008;59(6):29-34
Background: Epidermal Growth Factor Receptor (EGFR) is a transmembrane cell-surface glycoprotein with intrinsic tyrosine kinase activity. EGFR has been shown to stimulate cell proliferation and to enhance the migration and invasiveness of breast cancer. EGFR is expressed in epidermal cell lines and have been implicated in the pathogenesis of many different types of cancer. Objective: To evaluate the level of EGFR transcript in breast cancer and normal tissues; comparison the EGFR transcript level at different development stages and cancer cell types. Subject and methods: Total RNA from 62 tissue samples including 47 breast cancer and 15 normal tissues were extracted; cDNA synthesis by reverse transcript polymerase chain reaction, EGFR transcript level were determined using semi-quantitative RT-PCR. Result and conclusions: EGFR transcript level was highly expressed in breast cancer tissues compared to the normal tissues. Especially, its expression was related to the different status and cancer cell types of breast cancer. There was a difference of EGFR transcript level between histological pathology\u2019s forms of breast cancer in the same stage.
breast cancer
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Epidermal growth factor receptor
4.Management of Antibiotic-Resistant Helicobacter pylori Infection: Perspectives from Vietnam
Vu VAN KHIEN ; Duong Minh THANG ; Tran Manh HAI ; Nguyen Quang DUAT ; Pham Hong KHANH ; Dang Thuy HA ; Tran Thanh BINH ; Ho Dang Quy DUNG ; Tran Thi Huyen TRANG ; Yoshio YAMAOKA
Gut and Liver 2019;13(5):483-497
Antibiotic resistance is the most important factor leading to the failure of eradication regimens. This review focuses on the prevalence of Helicobacter pylori primary and secondary resistance to clarithromycin, metronidazole, amoxicillin, levofloxacin, tetracycline, and multidrug in Vietnam. We searched the PubMed, EMBASE, Vietnamese National Knowledge Infrastructure, and Vietnamese Biomedical databases from January 2000 to December 2016. The search terms included the following: H. pylori infection, antibiotic (including clarithromycin, metronidazole, amoxicillin, levofloxacin, tetracycline, and multidrug) resistance in Vietnam. The data were summarized in an extraction table and analyzed manually. Finally, Excel 2007 software was used to create charts. Ten studies (three studies in English and seven in Vietnamese) were included in this review. A total of 308, 412, 523, 408, 399, and 268 H. pylori strains were included in this review to evaluate the prevalence of H. pylori primary resistance to amoxicillin, clarithromycin, metronidazole, levofloxacin, tetracycline, and multidrug resistance, respectively. Overall, the primary resistance rates of amoxicillin, clarithromycin, metronidazole, levofloxacin, tetracycline, and multidrug resistance were 15.0%, 34.1%, 69.4%, 27.9%, 17.9% and 48.8%, respectively. Secondary resistance rates of amoxicillin, clarithromycin, metronidazole, levofloxacin, tetracycline, and multidrug resistance were 9.5%, 74.9%, 61.5%, 45.7%, 23.5% and 62.3%, respectively. In Vietnam, primary and secondary resistance to H. pylori is increasing over time and affects the effectiveness of H. pylori eradication.
Amoxicillin
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Asian Continental Ancestry Group
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Bismuth
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Clarithromycin
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Drug Resistance, Microbial
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Drug Resistance, Multiple
;
Helicobacter pylori
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Helicobacter
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Humans
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Levofloxacin
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Metronidazole
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Prevalence
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Tetracycline
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Vietnam
5.Study on prognostic index for survival m-LCPI in patients with primary non-small cell lung cancer
Thi Mai Thanh HOANG ; Xuan Thuy Anh HA ; Van Khanh DANG ; Minh Tri PHAN ; Thi Xinh Tuoi TRAN ; Ngoc Quynh Huong LE ; Thi Huong Mo NGUYEN ; Nguyen Ha Trang TRAN
Hue Journal of Medicine and Pharmacy 2023;13(7):133-139
Background: Lung cancer is a common cancer with a high mortality rate. The identification of prognostic factors in lung cancer patients in Vietnam is still limited and inconsistent in clinical practice. Objectives: To describe the clinical, paraclinical characteristics and m-LCPI index in patients with primary non-small cell lung cancer and evaluate the factors affecting overall survival in patients with primary non-small cell lung cancer. Methods: Prospective study of 210 cases of non-small cell lung cancer diagnosed with primary non-small cell lung cancer at the Oncology Department of Hue University of Medicine and Pharmacy Hospital and Hue Central Hospital from February 2020 to February 2023. Results: The majority of hospitalizations were at late stages, from stage IIIA (89%), group 3 and 4 in m-LCPI grading scale constituted the majority (80%). Average overall survival at 3 years was 20.0 ± 14 months, and gradually decreased to 54.8%, 40%, and 38.6% after 1 year, 2 years and 3 years, respectively. Regression analysis of COX model between m-LCPI and OS showed statistical significance with m-LCPI 4 (HR = 3.9, 95%CI = 1.57 - 9.69, p = 0.003), while m-LCPI 3 (HR = 2.44, 95% CI 0.97 - 6.13), p = 0.058) had a weak correlation. Conclusion: Our study shows that 38.6% of patients were still alive after 3 years of diagnosis. m-LCPI index is a good predictor of the patients’ overall survival.
6.Update on antibiotic resistance of common pathogenical bacteria isolated in Hue University of Medicine and Pharmacy Hospital
Dinh Binh TRAN ; Viet Quynh Tram NGO ; Thi Bao Chi LE ; Thi Chau Anh NGUYEN ; Hoang Bach NGUYEN ; Van Bao Thang PHAN ; Thi Khanh Linh NGUYEN ; Nu Xuan Thanh LE ; Thi Dang Khoa NGUYEN ; Thi Tuyen NGUYEN ; Thi Thuy UNG ; Thi Hai DINH ; Thi Ngoc Mai DUONG ; Minh Ngoc HOANG ; Viet Tu NGUYEN ; Le Bich Ngoc HOANG ; Tuan Khoi TRAN ; Doan Hieu TRAN ; Thi Tuyet Ngoc TRAN ; Van An LE
Hue Journal of Medicine and Pharmacy 2023;13(7):66-74
Backgroud: The aim of this study is to update on antibiotic resistance of common pathogenical bacteria isolated in Hue University of Medicine and Pharmacy Hospital (Hue UMP Hospital). Methodology: Use of the agar disk diffusion method to test the susceptibility to antimicrobial agents of 3709 bacterial strains from infected patients hospitalized in Hue UMP Hospital in 2020 - 2022. Results: Among 3709 strains of pathogenical bacteria isolated, S.aureus was found with the rate of 29.9%, followed by E. coli (24.5%), Pseudomonas aeruginasa (17.8%), Enterococcus spp. (11.8%), Klebsiella spp (9.7%) and Acinetobacter spp (4.1%). The proportion of bacterial isolates has changed, but Staphylococcus aureus is still highest rate. S.aureus is resistant to many antibiotics, but MRSA strains have decreased significantly, from 73.3% in 2020 to 62.5% in 2022. Pseudomonas aeruginosa was resistant to some of the group A recommended antibiotics such as ceftazidime, piperacillin-tazobactam with the rate of 56.6% and 48.7%. The percentage of E. coli with ESBL strains (+) was at 28.2% - 30.3%. Enterococus spp strains are still sensitive to vancomycin (83.1% - 91.9%). The rate of Klebsiella ESBL (+) is only 6.9% to 8.2%. The strains of Acinetobacter spp were highly resistant to Piperacillin (100%) and Ceftriaxone (96.5%) but they are still sensitive to imipenems 70 - 71%, highly sensitive to Doxycillin (95.2%) and Cefotaxime (88.4%). Conclusion: Many bacterial strains are resistant to many commonly antibiotics. Providing timely, regular, and effective management of antibiotic resistance patterns for common pathogenic bacteria in hospitals, will help reduce the risk of bacterial resistance.
7.Prevalence and risk factors for human papillomavirus infection among female sex workers in Hanoi and Ho Chi Minh City, Viet Nam: a cross-sectional study
Quang Duy Pham ; Kiesha Prem ; Tuan Anh Le ; Nguyen Van Trang ; Mark Jit ; Tuan Anh Nguyen ; Van Cao ; Tam-Duong Le-Ha ; Mai Thi Ngoc Chu ; Ly Thi Khanh Le ; Zheng Quan Toh ; Marc Brisson ; Suzanne Garland ; Gerald Murray ; Kathryn Bright ; Duc Anh Dang ; Hau Phuc Trana ; Edward Kim Mulholland
Western Pacific Surveillance and Response 2022;13(4):1-11
Objective:
Female sex workers (FSWs) are at high risk of human papillomavirus (HPV) infections and cervical cancer due to their high number of sexual partners. The objectives of this study were to determine the prevalence of HPV and identify risk factors for high-risk HPV infection among FSWs in Hanoi and Ho Chi Minh City (HCMC), Viet Nam.
Methods:
A cross-sectional study was conducted in Hanoi and HCMC between December 2017 and May 2018. We surveyed and screened 699 FSWs aged ≥18 years for HPV infection and abnormal cytology. A multivariable modified Cox regression model was used to determine risk factors for high-risk HPV infection.
Results
The overall prevalence of any HPV, high-risk HPV and HPV-16/18 infection in the 699 FSWs was 26.3%, 17.6% and 4.0%, respectively, and were similar in both cities. Multiple infections were identified in 127 participants (69.0%).HPV-52 was the most prevalent (7%), followed by HPV-58 (6%). Abnormal cytology was detected in 91 participants (13.0%). FSWs who are divorced (adjusted prevalence ratio [aPR]: 1.96, 95% confidence interval [CI]: 1.01–3.81), widowed (aPR: 3.26, 95% CI: 1.49–7.12) or living alone (aPR: 1.85, 95% CI: 1.01–3.39) were associated with a higher prevalence of high-risk HPV infection.