Anti-hepatitis C Virus Effect of Citrus Unshiu Peel and Its Active Ingredient Nobiletin

2005 ◽  
Vol 33 (01) ◽  
pp. 87-94 ◽  
Author(s):  
Megumi Suzuki ◽  
Kenroh Sasaki ◽  
Fumihiko Yoshizaki ◽  
Min Fujisawa ◽  
Katsuji Oguchi ◽  
...  
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Ethyl Acetate ◽  
Active Ingredient ◽  
Leukemia Cell ◽  
Leukemia Cell Line ◽  
Citrus Unshiu ◽  
Citrus Unshiu Peel ◽  
Polymerase Chain ◽  
Peel Extract

We investigated the effects of water and ethyl acetate extracts of Citrus unshiu peel (Aurantii Nobilis pericarpium) on hepatitis C virus (HCV) absorption in MOLT-4 cells (a human lymphoblastoid leukemia cell line). By reverse transcription polymerase chain reaction (RT-PCR), we showed that both the ethyl acetate layer of Citrus unshiu peel extract and fraction 7 decreased HCV absorption in MOLT-4 cells. Furthermore, we demonstrated that 3′,4′,5,6,7,8-hexamethoxyflavone (nobiletin) is the active ingredient that markedly inhibited HCV infection in MOLT-4 cells.

Detection of hepatitis “C” virus in formalin-fixed liver tissue by nested polymerase chain reaction

1992 ◽  
Vol 37 (4) ◽  
pp. 310-314 ◽  
Author(s):  
Richard Sallie ◽  
Anne Rayner ◽  
Bernard Portmann ◽  
A. L. W. F. Eddleston ◽  
Roger Williams
Keyword(s):  
Polymerase Chain Reaction ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Liver Tissue ◽  
Chain Reaction ◽  
Nested Polymerase Chain Reaction ◽  
Polymerase Chain ◽  
Formalin Fixed

scholarly journals CYTOTOXIC BIOACTIVE COMPOUNDS FROM CALOTROPIS GIGANTEA STEM BARK

2016 ◽  
Vol 8 (9) ◽  
pp. 111
Author(s):  
Kartini Hasballah ◽  
Murniana . ◽  
Erya . ◽  
Ardian .
Keyword(s):  
Ethyl Acetate ◽  
Cytotoxic Activity ◽  
Ethyl Acetate Extract ◽  
Leukemia Cell ◽  
Stem Bark ◽  
Hexane Extract ◽  
Leukemia Cell Line ◽  
Calotropis Gigantea ◽  
Murine Leukemia Cell ◽  
Main Components

<p><strong>Objective: </strong>The present study deals with the cytotoxic activity of n-hexane and ethyl acetate extracts of <em>Calotropis gigantea</em> L. stem bark and its fractions such as A, B, C, D and E fractions on murine leukemia cell line P388.</p><p><strong>Methods: </strong>The crude extracts of <em>C. gigantea</em> stem bark were prepared using n-hexane and ethyl acetate solvents. The plant extracts were subjected to vacuum liquid chromatography followed by TLC. According to the similarity of stain patterns, the fractions were combined. The extracts and its combined fractions were then subjected for the phytochemical test. Cytotoxic activity of those extracts and its combined fractions were tested using MTT assay. Fraction D was subjected to gravity column chromatography followed by TLC. Then, fractions A, B, and D2 were crystallized and subjected to GC-MS.</p><p><strong>Results: </strong>The qualitative screening of n-hexane extract of <em>Calotropis gigantea</em> L. stem bark for secondary metabolites showed the presence of terpenoid, flavonoids, phenolics and coumarins. While the ethyl acetate extract contained phenolics, steroids, flavonoids, saponins and coumarins compounds. IC<sub>50 </sub>values for n-hexane extract and E fraction are 76.29 µg/ml and 18.48 µg/ml, respectively. In the ethyl acetate extract and C fraction obtained IC<sub>50</sub> values 57.05 µg/ml and 52.58 µg/ml.</p><p><strong>Conclusion: </strong>Cytotoxic activity from E fraction of n-hexane extract of <em>C. gigantea</em> stem bark is the most potent and containing flavonoids, phenolics and coumarins. The main components from several compounds of n-hexane extract of <em>C. gigantea</em> are germacrane-A, (-)-globulol, urs-12-ene and veridiflorol. </p>

Confirmation of Hepatitis C Virus Positive Seras by Polymerase Chain Reaction

1994 ◽  
pp. 123-126
Author(s):  
G. Lucotte ◽  
C. Mura ◽  
A. Aouizenate ◽  
T. Champenois ◽  
J. Marchand
Keyword(s):  
Polymerase Chain Reaction ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Chain Reaction ◽  
Polymerase Chain

scholarly journals Introduction of NAT-testing for infections for screening blood donors in Republic of Kazakhstan

2015 ◽  
Vol 96 (3) ◽  
pp. 414-417
Author(s):  
T N Savchuk ◽  
Z K Burkitbaev ◽  
S A Abdrakhmanova ◽  
S V Skorikova ◽  
N S Kuz’min
Keyword(s):  
Human Immunodeficiency Virus ◽  
Polymerase Chain Reaction ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Hepatitis B Virus ◽  
Blood Donors ◽  
Chain Reaction ◽  
B Virus ◽  
Immunodeficiency Virus ◽  
Polymerase Chain

Aim. To evaluate the effectiveness of NAT-screening (nucleic acid amplification technologies) for infections in blood donors in Kazakhstan. Methods. Statistical data of blood donors screening examinations in the Republic of Kazakhstan in 2012-2014 were evaluated. Results. In 2014, the number of examined donors increased by 3.4% compared with 2012. The number of deferrals due to positive screening results for serological markers decreased by 10.9%, while the share of such donors decreased by 13.8% [p <0.01; odds ratio (OR) - 0.86, 95% confidence interval (CI 95%) - 0.83-0.88); χ2=136.76]. In 2014, 100% of donations were screened using NAT-testing (312,510 donors). Most of the NAT-screening in Kazakhstan is performed using closed automated systems. In 2012, 1 Blood Center conducted a polymerase chain reaction screening by open circuit polymerase chain reaction systems, in 5 blood centers polymerase chain reaction was performed with manual sample preparation. In 2014, the number of deferrals due to positive NAT-testing results has increased by 44.3%, the share of such donors - by 38.7% (p <0.01; OR=1.39, 95% CI=1.15-1.67); χ2=11.82). Seronegative NAT-positive samples were discovered according to the results of discriminant test, including human immunodeficiency virus - 2 (0.8%) samples, hepatitis B virus -182 (73.4%), hepatitis C virus - 60 (24.2%), negative result - 4 (1.6%). Conclusion. The introduction of screening NAT-testing of donated blood prevented transfusion of blood infected with: human immunodeficiency virus - 1 in 150,000 donations, hepatitis B virus - 1 in 1.650 donations, hepatitis C virus - 1 in 5,000 donations.

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