1.Study on the anatomical and morphological features of Acanthopanax gracilistylus W.W. Smith and A.trifoliatus (L.) Merr. collected in Sa Pa district, Lao Cai province and Pho Bang district, Ha Giang province
Journal of Medicinal Materials - Hanoi 2005;10(4):103-108
Study on the anatomical and morphological features of Acanthopanax gracilistylus W.W. Smith and A.trifoliatus (L.) Merr. collected in Sa Pa district, Lao Cai province and Pho Bang district, Ha Giang province. Results: scientific name of 2 collected samples had been identified as Acanthopanax gracilistylus W.W. Smith and Acanthopanax trifoliatus var. setosus Li. The anatomical features of these 2 species were detailed described. The morphological features of leaf, stem and root of A.trifoliatus (L.) Merr. collected in Sa Pa and Pho Bang was detailed described firstly. The morphological characteristics of 2 species were similar
Acanthopanax
;
Anatomy
;
Plants, medicinal
2.Estimating the effectiveness of nimodipin in treatment of children with intracranial hemorrhage
Huong Thi Thanh Nguyen ; Ung Thi Ninh ; Thong Minh Pham ; Huyen Thi Thanh Ho
Journal of Medical Research 2007;55(6):58-64
Background:Cerebral vasospasm is a proved reaction and nimodipin revolutionised the treatment of subarrachnoid hemorrhage in adult. However, the effectiveness of Nimodipin in cerebral vasospasm remained controversial in intracranial hemorrhage (lCH) in children. Objectives:This study aims to estimate the effectiveness of nimodipin in treatment of children with intracranial hemorrhage.Subjects and method:A descriptive, prospective study was conducted on all children patients diagnosed intracranial hemorrhage and treated at Neurology department of National Hospital for Pediatric, Vietnam from 2004 to June 2007. They applied the Transcranial Doppler sonography (TCD) in diagnosis of vasospasm in intracranial hemorrhage in children and follow-up the evolution after treatment with nimodipin. Results:The results showed that cerebral vasospasm with hight resistance index (RI) on TCD (RI = 0.78 \xb1 0.08) and cerebral ischemie with low systolic velocity (Vs = 68 \xb1 12.2 crn/s) and hight pulsality index (PI = 1.4 \xb1 0.13) were observed in 100% of cases after 3 days with ICH. Nimodipine improved clinical status (71.2%) and CT scan (52%), also RI, PI, Vs returned to normal when used nimodipin within 7 days of ICH. Conclusion: The treatment method for intracranial hemorrhage with nimodipin supplement had proved to have initial effecacy in comparison with traditional method.
Intracranial Hemorrhages/ therapy
;
Nimodipine/ therapeutic use
;
Infant
3.NO Production Inhibition of Lignans from Vietnamese Schisandra sphenanthera Rehd. et Wils. Fruits
Hong Khuyen THI PHAM ; Phu Chi Hieu TRUONG ; Khanh Huyen THI PHAM ; Dao Cuong TO ; Manh Hung TRAN ; Tu Nguyen THI THANH
Natural Product Sciences 2023;29(4):312-322
In the present study, bioactivity-guided extraction and isolation of the n-hexane fraction of the fruits of Vietnamese Schisandra sphenanthera led to the isolation of five dibenzocyclooctadiene lignans as gomisin N (1), schisandrin C (2), gomisin H (3), gomisin D (4), and gomisin C (5). All the isolates were tested for their inhibition of NO production in LPS-induced RAW 264.7 cells. Among them, compounds 4 and 5 showed weak inhibition of NO production with IC 50 values of 25.0 ± 1.6 and 24.8 ± 2.0 µM, respectively. Compound 1 exhibited NO production inhibition with an IC 50 value of 15.8 ± 2.1 µM, meanwhile, schisandrin C (2) showed the most potent inhibition with an IC 50 value of 8.5 ± 0.5 µM. In addition, compound 2 had a concentrationdependent inhibitory effect on the protein expression of the inflammatory enzymes iNOS and COX-2. Their physicochemical properties and ADMET data were predicted by in silico, indicating favorable drug-like properties as well as low acute oral toxicity. The results suggest that the fruit of S. sphenanthera and its phytochemical constituents might be used as anti-inflammatory agents.
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
;
Asian Continental Ancestry Group
;
Bismuth
;
Clarithromycin
;
Drug Resistance, Microbial
;
Drug Resistance, Multiple
;
Helicobacter pylori
;
Helicobacter
;
Humans
;
Levofloxacin
;
Metronidazole
;
Prevalence
;
Tetracycline
;
Vietnam
5.Comparing multiplex and multiplex real-time polymerase chain reaction with traditional blood culture in bacterial detection among patients with septicemia
Loan Thi Nguyen ; Linh Trong Nguyen ; Trang Thu Nguyen ; Hien Minh Nguyen ; Thuy Thi Pham ; Huyen Thi La
Malaysian Journal of Microbiology 2022;18(3):242-250
Aims:
This study was aimed to test the specificity of primers and probes with target genes by using multiplex PCR and multiplex real-time PCR methods. These methods were compared with traditional blood culture methods in detecting five bacteria causing sepsis, including Acinetorbacter baumannii, Klebsiella pneumoniae, Pseudomonas aeruginosa, Escherichia coli and Staphylococcus aureus.
Methodology and results:
A total of 587 blood samples from patients diagnosed with sepsis and septic shock were collected at Thanh Nhan Hospital, Hanoi, Vietnam. Each sample was divided into three parts for bacterial culture, multiplex PCR and multiplex real-time PCR to detect the similarity of the two PCR methods with the bacterial culture method. Conditions in multiplex PCR and multiplex real-time PCR were optimized to ensure the successful amplification of target genes. Results showed that the primers and probes were tested completely specific to the target genes and using multiplex PCR and multiplex real-time PCR techniques could detect five pathogens causing sepsis, including A. baumannii, K. pneumoniae, P. aeruginosa, E. coli and S. aureus.
Conclusion, significance and impact of study
Both multiplex PCR and multiplex real-time PCR methods have high similarities with the culture method, showing potential in the application of bacteria detection in sepsis.
Multiplex Polymerase Chain Reaction
;
Sepsis--microbiology