1.Isolation and structure determination of calophylloid obtained from seed of (Calophyllum inophyllum L.) grown in Vietnam
Pharmaceutical Journal 1999;282(10):16-18
Calophylloid, a coumarine - has been extracted from Calophyllum inophyllum L. of various countries in 1951. Here we report the isolation procedures of this substance from Calophyllum inophyllum L. collected in southern Vietnam and their structural elucidation were established using m.p., aD, IR, UV, EI-MS, 13C-NMR, 1H-HMR.
Seeds
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Plants, Medicinal
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Plants, Medicinal
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Medicine, Traditional
2.Inactivated pep27 mutant as an effective mucosal vaccine against a secondary lethal pneumococcal challenge in mice.
Sang Yoon CHOI ; Thao Dang Hien TRAN ; David E BRILES ; Dong Kwon RHEE
Clinical and Experimental Vaccine Research 2013;2(1):58-65
PURPOSE: A pep27 mutant may be able to elicit mucosal immunity against pneumococcal diseases, and could be employed as an inexpensive attenuated vaccine. However, this particular mutant contains an erythromycin-resistance marker. The purpose of the current study is to develop a markerless pep27 mutant and assess whether this inactivated mutant is able to induce mucosal immunity. MATERIALS AND METHODS: Mice were vaccinated intranasally with the inactivated markerless pep27 mutant every 2 weeks for a total of three times, after which time serum samples were analyzed for antibody titers. The mice were then challenged with a lethal D39 strain and their survival time was measured. The cross-reactivity of the antisera against pep27 was also compared to other mutant serotypes. RESULTS: Intranasal immunization of mice with the inactivated markerless pep27 mutant provides effective protection and rapidly cleared bacterial colonization in vivo. Moreover, antisera raised against the pep27 mutant may cross-react with several other serotype strains. CONCLUSION: Intranasal immunization with the inactivated pep27 mutant may be able to provide mucosal immunity, and could represent an efficient mucosal vaccine.
Animals
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Colon
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Immune Sera
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Immunity, Mucosal
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Immunization
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Mice
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Sprains and Strains
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Streptococcus pneumoniae
3.Associations of physical activity at work and household income with obesity: a cross-sectional study among rural adults in Korea
Su Yeon KYE ; Heeyoun CHO ; Tran Thi Phuong THAO ; Jin-Kyoung OH ; Min Kyung LIM
Epidemiology and Health 2021;43(1):e2021003-
OBJECTIVES:
This study was performed to identify the effect of physical activity at work on obesity and to analyze the contribution of socioeconomic factors and health behaviors to this association, which has been relatively little studied.
METHODS:
From the Korean National Cancer Center Community Cohort, a total of 5,587 adults (2,125 men; 3,462 women) aged more than 30 years living in rural areas were enrolled. Information on socio-demographic factors, health behaviors, and body mass index was gathered using face-to-face interviews and measurements of height and weight.
RESULTS:
Inverse associations were identified between vigorous-intensity physical activity at work and obesity in both men and women, while no association was found between vigorous-intensity physical activity during leisure time and obesity. High household income was independently associated with a lower risk of obesity among those who had low levels of vigorous-intensity physical activity at work. Vigorous physical activity at work showed an inverse association with obesity in rural areas where heavy manual labor is common.
CONCLUSIONS
Our findings indicate the necessity to account for various types of physical activity to improve the assessment and prevention of obesity.
4.Associations of physical activity at work and household income with obesity: a cross-sectional study among rural adults in Korea
Su Yeon KYE ; Heeyoun CHO ; Tran Thi Phuong THAO ; Jin-Kyoung OH ; Min Kyung LIM
Epidemiology and Health 2021;43(1):e2021003-
OBJECTIVES:
This study was performed to identify the effect of physical activity at work on obesity and to analyze the contribution of socioeconomic factors and health behaviors to this association, which has been relatively little studied.
METHODS:
From the Korean National Cancer Center Community Cohort, a total of 5,587 adults (2,125 men; 3,462 women) aged more than 30 years living in rural areas were enrolled. Information on socio-demographic factors, health behaviors, and body mass index was gathered using face-to-face interviews and measurements of height and weight.
RESULTS:
Inverse associations were identified between vigorous-intensity physical activity at work and obesity in both men and women, while no association was found between vigorous-intensity physical activity during leisure time and obesity. High household income was independently associated with a lower risk of obesity among those who had low levels of vigorous-intensity physical activity at work. Vigorous physical activity at work showed an inverse association with obesity in rural areas where heavy manual labor is common.
CONCLUSIONS
Our findings indicate the necessity to account for various types of physical activity to improve the assessment and prevention of obesity.
5.Improvements of facial profile and smile aesthetic using temporary anchorage devices and botulinum toxin: a case report
Hoang VIET ; Dang Thi Nhu THAO ; Nguyen Khanh MY ; Tran Hong PHUOC ; Hoang Minh TUYEN
Archives of Craniofacial Surgery 2024;25(5):240-246
The severe gummy smile and a skeletal class II profile pose challenges in treatment. This case report outlines an effective alternative for addressing these problems in a patient with skeletal class II division 2, class II molar relationship, retroclination of upper incisors, and lip protrusion. Treatment objectives included normalizing the overjet and overbite, improving the gummy smile, and establishing a satisfactory occlusion. A three-dimensional simulation was performed to consult with the patient, assess possible results, and predict treatment biomechanics. The treatment involved the use of two zygomatic and one inter-radicular temporary anchorage devices, along with botulinum toxin. After the 2-year follow-up, a satisfactory dental occlusion, aesthetic improvement, and adequate function were achieved. This approach offers a viable alternative to orthognathic surgery for adults with skeletal class II malocclusion and a severe gummy smile due to hypermobile lip.
6.Improvements of facial profile and smile aesthetic using temporary anchorage devices and botulinum toxin: a case report
Hoang VIET ; Dang Thi Nhu THAO ; Nguyen Khanh MY ; Tran Hong PHUOC ; Hoang Minh TUYEN
Archives of Craniofacial Surgery 2024;25(5):240-246
The severe gummy smile and a skeletal class II profile pose challenges in treatment. This case report outlines an effective alternative for addressing these problems in a patient with skeletal class II division 2, class II molar relationship, retroclination of upper incisors, and lip protrusion. Treatment objectives included normalizing the overjet and overbite, improving the gummy smile, and establishing a satisfactory occlusion. A three-dimensional simulation was performed to consult with the patient, assess possible results, and predict treatment biomechanics. The treatment involved the use of two zygomatic and one inter-radicular temporary anchorage devices, along with botulinum toxin. After the 2-year follow-up, a satisfactory dental occlusion, aesthetic improvement, and adequate function were achieved. This approach offers a viable alternative to orthognathic surgery for adults with skeletal class II malocclusion and a severe gummy smile due to hypermobile lip.
7.Improvements of facial profile and smile aesthetic using temporary anchorage devices and botulinum toxin: a case report
Hoang VIET ; Dang Thi Nhu THAO ; Nguyen Khanh MY ; Tran Hong PHUOC ; Hoang Minh TUYEN
Archives of Craniofacial Surgery 2024;25(5):240-246
The severe gummy smile and a skeletal class II profile pose challenges in treatment. This case report outlines an effective alternative for addressing these problems in a patient with skeletal class II division 2, class II molar relationship, retroclination of upper incisors, and lip protrusion. Treatment objectives included normalizing the overjet and overbite, improving the gummy smile, and establishing a satisfactory occlusion. A three-dimensional simulation was performed to consult with the patient, assess possible results, and predict treatment biomechanics. The treatment involved the use of two zygomatic and one inter-radicular temporary anchorage devices, along with botulinum toxin. After the 2-year follow-up, a satisfactory dental occlusion, aesthetic improvement, and adequate function were achieved. This approach offers a viable alternative to orthognathic surgery for adults with skeletal class II malocclusion and a severe gummy smile due to hypermobile lip.
8.Improvements of facial profile and smile aesthetic using temporary anchorage devices and botulinum toxin: a case report
Hoang VIET ; Dang Thi Nhu THAO ; Nguyen Khanh MY ; Tran Hong PHUOC ; Hoang Minh TUYEN
Archives of Craniofacial Surgery 2024;25(5):240-246
The severe gummy smile and a skeletal class II profile pose challenges in treatment. This case report outlines an effective alternative for addressing these problems in a patient with skeletal class II division 2, class II molar relationship, retroclination of upper incisors, and lip protrusion. Treatment objectives included normalizing the overjet and overbite, improving the gummy smile, and establishing a satisfactory occlusion. A three-dimensional simulation was performed to consult with the patient, assess possible results, and predict treatment biomechanics. The treatment involved the use of two zygomatic and one inter-radicular temporary anchorage devices, along with botulinum toxin. After the 2-year follow-up, a satisfactory dental occlusion, aesthetic improvement, and adequate function were achieved. This approach offers a viable alternative to orthognathic surgery for adults with skeletal class II malocclusion and a severe gummy smile due to hypermobile lip.
9.Epidemiology of ROTA virus diarrhea in Ho Chi Minh city from 12/2006-11/2007
Hien Dang Nguyen ; Huong Thu Ngo ; Luan Thi Le ; Man Van Nguyen ; Dung Trung Le ; Ha Thi Ngan Dang ; Huong Thi Mai Nguyen ; Hanh Bich Tran ; Tu Van Phan ; Thao Thi Thanh Nguyen ; Phuc Le Hoang
Journal of Preventive Medicine 2008;97(5):46-51
Background: Acute gastroenterophathy usually caused by the Rota virus for children under 5 years old. Objectives: To present various types of data on epidemiology of ROTA virus diarrhea in Ho Chi Minh city from 12/2006-11/2007. Material and method: The data were collected from 500 stool specimens of diarrhea diagnosed chilren hosptalised at Thuy Dien Pediatric hospital 1, Ho Chi Minh city from December/2006 to November /2007. Results:There were 322 rotavirus-positive specimens, representing 64.4%. The proportions of monthly distribution of cases with diarrhea due to rotavirus were 90.1%, 54.39%, 85.37%, 74.51%, 72.92%, 41.67%, 26.67%, 58.33%, 79.31%, 52.63%, 69.05% and 57.78%, respectively. The numbers of rotavirus-positive cases in male and female were 216 (65.26%) and 106 (62.72%), respectively. The proportions of Rota virus positive children compared to total number of diarrheal cases with age 0-3, 3-6, 6-12, 12-24, 24-36 and over 36 months were 2.80%, 7.76%, 40.06%, 40.68%, 5.28% and 3.42%, respectively.\r\n', u'The results of typing identification indicated that the phenotypes of 98 among 100 specimens were identified (98%) in which there were sixty-one specimens of G1P8 (61%), one specimen of G2P8 (1%), fourteen specimens of G3P8 (14%), four of specimens of G4P8 (4%), eighteen specimens of GmixedP8 (18%). There were only two specimens of GnontypeableP8 (2%). Conclusion: Further studies should be carried out to clear this issue.\r\n', u'
Rotavirus
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gel type.
10.Biological Activity of Chemical Constituents Isolated from Strain Chlamydomonas sp. KSF108 (Chlamydomonadaceae)
Huynh Nguyen Khanh TRAN ; Ui Joung YOUN ; Minji KIM ; Thao Quyen CAO ; Jeong Ah KIM ; Mi Hee WOO ; Sanghee KIM ; Byung Sun MIN
Natural Product Sciences 2020;26(1):59-63
This study focused on investigation of the immunosuppressive inhibitory effect through determination of IL-2 production of nine compounds (1 − 9) isolated from Chlamydomonas sp. KSF108. Among them, compounds 1, 5, and 6 displayed moderately inhibitory effects on IL-2 production at a concentration of 100 μM. In addition, the related ones including cytotoxic, anti-inflammatory, and anti-oxidant activities were also elucidated. 6 further displayed cytotoxic activity against the MCF-7 cell line, with an IC50 value of 17.2 μM and 4, 6 − 7, and 9 possessed significant DPPH radical scavenging activity, with IC50 values ranging from 3.1 to 4.4 μM. To the best of our knowledge, this is the first report on the bioactivity of isolated chemical constituents from the genus Chlamydomonas. Compounds 1 and 5 investigated for the first time in the activity of immunosuppressivity and 6 may come to serve as the most important marker in broad-spectrum activities of the secondary metabolites identified from C. sp. KSF108.