1.Experimental study on hemoregulation effects of cracetin
Journal of Practical Medicine 2005;530(11):39-42
Method of dissemination intravascular coagulation (DIC) was used on experimental rabbits by intravenous thrombin solution 15 IU. Then rabbits were divided into 3 groups: the control group (8 rabbits) received NaCI 0.9% solution 2 ml/kg W.b/24h; the study group (10 rabbits) received mixed pollution cracetin 10.5 mg/kg/24h; the compare drug group (10 rabbits) received Tanakan solution 4.8 mg/kg w.b. All 3 rabbits groups were orally received in one continuous week. On experimental model of DIC at the dose of 10.5 mg/kg W.b/24h orally within 7 days, cracetin elongated the values of the Howell time, Quick time, thrombin time, partial thrombin time. The drug cracetin increased amount of fibrinogen, restored the number of thrombosis that were consumed more in the progress of forming blood coagulation before.
Blood
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Animal Experimentation
2.Hepatoprotective effects of Protecliv in the experiments
Journal of Practical Medicine 2005;10():17-20
Protecliv is one of products of the National Project-2003 were tested before approval. This product was manufactored by The Central Pharmaceutical Company No1. The role of the Protecliv were investigated in protection against INH and RIF-induced hepatotoxicity in young rats. All drugs were administered orally in suspension form over one week. These results suggested that , INH-RIF-induced hepatotoxicity can be prevented by Protecliv at the two levels of the dose. The significant hepatoprotective dose of this compound was 250 and 500mg/kg wb/day (p<0.01) according the level of the used dose.
Protective Agents
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Liver
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Animal Experimentation
3.Study on situation and clinical characters of leukoderma during 1/2000-1/2005
Journal of Practical Medicine 2005;519(9):5-8
A prospective and cross-sectional study on 135 patients with leukoderma at the Central Military Hospital N0 108 and the Military Hospital N0 105 showed that: the disease developed at age of 10-19 (26.67%), mainly in patients under 40 year of age (82.98%), females more than males. 16.3% of patients have family history with leukoderma, mainly siblings (45.45%), parents (22.72%). Psychological trauma was observed in 18.52% of patients, 30.37 % of patient have other diseases, mainly gastro-duodenal ulcer (24.44%). The lesions developed in head, neck and face area (55.56%), four limbs (28.14%); pervasive form (60.74%), localized form (11.85%). The disease at moderate level (39.26%), serious level (31.11%); mild level (29.63%). The disease is the most common at progressive stage (75.56%), stable stage (24.44%), and period of disease less than 5 years accounted for 65.19%.
Skin Diseases
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Diagnosis
4.Anticancer effects of saponin and saponin-phospholipid complex of Panax notoginseng grown in Vietnam
Kim Dang Thu ; Thanh Nguyen Hai ; Thuy Nguyen Duong ; Duc Vu Loi ; Thi Vu Thu ; Manh Vu Hung ; Boonsiri Patcharee ; Thanh Bui Tung
Asian Pacific Journal of Tropical Biomedicine 2016;6(9):795-800
Objective: To evaluate the antitumor activity both in vitro and in vivo of saponin–phospholipid complex of Panax notoginseng. Methods: The in vitro cytotoxic effect of saponins extract and saponin–phospholipid complex against human lung cancer NCI-H460 and breast cancer cell lines BT474 was examined using MTS assay. For in vivo evaluation of antitumor potential, saponin and saponin–phospholipid complex were administered orally in rats induced mammary carcinogenesis by 7,12-dimethylbenz(a)anthracene, for 30 days. Results: Our data showed that saponin–phospholipid complex had stronger anticancer effect compared to saponin extract. The IC50 values of saponin–phospholipid complex and saponin extract for NCI-H460 cell lines were 28.47μg/mL and 47.97μg/mL, respectively and these values for BT474 cells were 53.18μg/mL and 86.24μg/mL, respectively. In vivo experiments, administration of saponin, saponin–phospholipid complex and paclitaxel (positive control) effectively suppressed 7,12-dimethylbenz(a) anthracene-induced breast cancer evidenced by a decrease in tumor volume, the reduction of lipid peroxidation level and increase in the body weight, and elevated the enzymatic antioxidant activities of su-peroxide dismutase, catalase, glutathione peroxidase in rat breast tissue. Conclusions: Our study suggests that saponin extract from Panax notoginseng and saponin–phospholipid complex have potential to prevent cancer, especially breast cancer.
5.Identification of Soluble Epoxide Hydrolase Inhibitors from the Seeds of Passiflora edulis Cultivated in Vietnam
To Dao CUONG ; Hoang THI NGOC ANH ; Tran Thu HUONG ; Pham Ngoc KHANH ; Vu Thi HA ; Tran Manh HUNG ; Young Ho KIM ; Nguyen Manh CUONG
Natural Product Sciences 2019;25(4):348-353
Soluble epoxide hydrolases (sEH) are enzymes present in all living organisms, metabolize epoxy fatty acids to 1,2-diols. sEH in the metabolism of polyunsaturated fatty acids plays a key role in inflammation. In addition, the endogenous lipid mediators in cardiovascular disease are also broken down to diols by the action of sEH that enhanced cardiovascular protection. In this study, sEH inhibitory guided fractionation led to the isolation of five phenolic compounds trans-resveratrol (1), trans-piceatannol (2), sulfuretin (3), (+)-balanophonin (4), and cassigarol E (5) from the ethanol extract of the seeds of Passiflora edulis Sims cultivated in Vietnam. The chemical structures of isolated compounds were determined by the interpretation of NMR spectral data, mass spectra, and comparison with data from the literature. The soluble epoxide hydrolase (sEH) inhibitory activity of isolated compounds was evaluated. Among them, trans-piceatannol (2) showed the most potent inhibitory activity on sEH with an IC₅₀ value of 3.4 µM. This study marks the first time that sulfuretin (3) was isolated from Passiflora edulis as well as (+)-balanophonin (4), and cassigarol E (5) were isolated from Passiflora genus.
Cardiovascular Diseases
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Epoxide Hydrolases
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Ethanol
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Fatty Acids
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Fatty Acids, Unsaturated
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Inflammation
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Metabolism
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Passiflora
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Passifloraceae
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Phenol
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Vietnam
6.Identification of Phenolic Compounds from Vietnamese Artichoke (Cynara scolymus L.) Leaf and Their Antioxidant Activities
Anh Nguyet Thi NGUYEN ; Thanh Tuyen Thi VU ; Hong Tuoi Thi DO ; Thien Hai NGUYEN ; Huan Van LE ; Hong Khuyen Thi PHAM ; Phu Chi Hieu TRUONG ; Dong Phuong PHAM ; Manh Hung TRAN
Natural Product Sciences 2024;30(1):39-51
Artichoke (Cynara scolymus L.) is a perennial plant belonging to the Asteraceae family originating from the Mediterranean region. In Vietnam, there are some varieties of artichoke which are extensively cultivated and propagated in highland areas, however, there have been limited detailed scientific publications on the chemical composition and biological activity of artichoke grown in Vietnam. Therefore, this study provides a detailed description of the extraction, isolation, and structural determination of 20 natural secondary metabolites present in harvested artichoke. The antioxidant activity of the extract and the 9 isolated compounds are tested in 1,1-diphenyl-2-picrylhydrazyl radical scavenging and ex vivo malondialdehyde model. Among the selected compounds, 1-caffeoylquinic acid, 3-caffeoylquinic acid, chlorogenic acid, 4-caffeoylquinic acid, cynarin, 1,5-dicaffeoylquinic acid, 4,5-di-caffeoylquinic acid, cynaroside, and scolymoside exhibited strong radical scavenging activity with IC50 values ranging from 5.7 to 61.6 µM. In the malondialdehyde assay, 1,3-dicaffeoylquinic acid (or cynarin) showed the strongest activity with an IC50 value of 24.7 µM, followed by 1,5-di-caffeoylquinic acid (66.8 µM), and 4,5-di-caffeoylquinic acid (127.3 µM). This outcome contributes to establishing a database on the phytochemical and antioxidant activity of the Vietnamese artichoke.
7. Anticancer effects of saponin and saponin–phospholipid complex of Panax notoginseng grown in Vietnam
Thu DANG KIM ; Tung BUI THANH ; Hai NGUYEN THANH ; Duong NGUYEN THUY ; Loi VU DUC ; Thu VU THI ; Thu VU THI ; Hung VU MANH ; Patcharee BOONSIRI
Asian Pacific Journal of Tropical Biomedicine 2016;6(9):795-800
Objective To evaluate the antitumor activity both in vitro and in vivo of saponin–phospholipid complex of Panax notoginseng. Methods The in vitro cytotoxic effect of saponins extract and saponin–phospholipid complex against human lung cancer NCI-H460 and breast cancer cell lines BT474 was examined using MTS assay. For in vivo evaluation of antitumor potential, saponin and saponin–phospholipid complex were administered orally in rats induced mammary carcinogenesis by 7,12-dimethylbenz(a)anthracene, for 30 days. Results Our data showed that saponin–phospholipid complex had stronger anticancer effect compared to saponin extract. The IC50 values of saponin–phospholipid complex and saponin extract for NCI-H460 cell lines were 28.47 μg/mL and 47.97 μg/mL, respectively and these values for BT474 cells were 53.18 μg/mL and 86.24 μg/mL, respectively. In vivo experiments, administration of saponin, saponin–phospholipid complex and paclitaxel (positive control) effectively suppressed 7,12-dimethylbenz(a) anthracene-induced breast cancer evidenced by a decrease in tumor volume, the reduction of lipid peroxidation level and increase in the body weight, and elevated the enzymatic antioxidant activities of superoxide dismutase, catalase, glutathione peroxidase in rat breast tissue. Conclusions Our study suggests that saponin extract from Panax notoginseng and saponin–phospholipid complex have potential to prevent cancer, especially breast cancer.