scholarly journals Investigation of Anticancer Agents from the Bark of Gyrinops Versteegii (Gilg.) Domke from Lombok Island

2020 ◽  
Vol 36 (6) ◽  
pp. 1037-1042
Author(s):  
SURYA HADI ◽  
DIAN LESTARI ◽  
NI KOMANG TRI DHARMAYANI ◽  
BAIQ DESY RATNASARI ◽  
M ITO ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Anticancer Agents ◽  
Brine Shrimp ◽  
Research Collaboration ◽  
Methanol Extract ◽  
Phytochemical Study ◽  
Vacuum Liquid Chromatography ◽  
The University ◽  
Great Potency ◽  
Lombok Island

This study is part of a research collaboration between Kyoto University and The University of Mataram, aiming to identify and to utilize the agarwood plants, i.e., Gyrinops versteegii from Indonesia. The study, specifically, aims to discover anticancer agents from the bark of G. versteegii from Lombok Island of Indonesia. There were three provenances of G. versteegii observed, namely Soyun, Pantai, and Buaya. Based on the Brine Shrimp Lethality Test (BSLT), G. versteegii Buaya showed the highest cytotoxicity with LC50 45,94 µg/ml. Meanwhile, G. versteegii Soyun and Pantai have LC50 75.86 µg/mL and 56.36 µg/mL respectively. A phytochemical study showed that the methanol extract of G. versteegii Buaya containing compounds from the group of alkaloid, flavonoid, steroid, triterpenoid, and saponin. The methanol extracts fractionated using Vacuum Liquid Chromatography into 10 fractions (F1-F10) and then retested BSLT. Among the fractions, F2 showed the best potency as an anticancer with LC50 64,12 µg/mL. Based on the GC-MS analysis, the cytotoxicity from both methanol extract and F2 is predicted to be influenced by the same compounds, namely, 1,4-Benzenediol,2-methyl, Pyridoxylamine, 2,3-Dimethylhydroquionone, Tetramethyl-p-benzoquinone, and Benzofuran. Overall, the bark of G. versteegii from Lombok Island has great potency as an anticancer.

scholarly journals 6. Cytotoxic Potential of n-Hexane Extract of Calotropis gigantea L. Leaves

2016 ◽  
Vol 1 (1) ◽  
pp. 45-49 ◽  
Author(s):  
Kartini Hasballah ◽  
Murniana Murniana ◽  
Al Azhar ◽  
Nurul Rahmi
Keyword(s):  
Liquid Chromatography ◽  
Crude Extract ◽  
Brine Shrimp ◽  
Hexane Extract ◽  
Phytochemical Screening ◽  
Cytotoxic Potential ◽  
Calotropis Gigantea ◽  
Brine Shrimp Lethality ◽  
Vacuum Liquid Chromatography

The present study was done to determine the cytotoxic potential of n-hexane extract of Calotropis gigantea L. leaves and its fractions. Here, dried leaves of C. gigantea L. were macerated using n-hexane to obtain crude extract of 21.16 g (1.03%). The components of n-hexane extract of C. gigantea L. leaves were separated with vacuum-liquid chromatography resulted 4 fractions which are A (0.5 g), B (0.9g), C (5.29 g), and D (6.25 g). Phytochemical screening indicated that the extract contained various secondary metabolic compounds such as steroids, terpenoids, saponins, flavonoids, coumarins, and phenolics. Cytotoxic potenital of the crude extract of C. gigantea L. and its fractions was examined using brine shrimp lethality test (BSLT). The LC50 values of C. gigantea’s n-hexane extract and its fractions that determined by Finney method were 272.27 (n-hexane extract), 31.62 (fraction A), 43.65 (fraction B), 33.89 (fraction C) and 20.98 (fraction D) ?g/mL, respectively. The most active was D fraction contained terpenoids, flavonoids, and phenolics which were assumed contribute to its cytotoxic potential. These results suggested that n-fraction of C. gigantea might possess antitumor or pesticidal activities..

scholarly journals Dicaffeoylquinic Acids from the Aerial Parts of Artemisia ciniformis Krasch. & Popov ex Poljakov

2019 ◽  
Vol 25 (2) ◽  
pp. 171-175
Author(s):  
Sajjad Nasseri ◽  
Seyed Ahmad Emami ◽  
Mahdi Mojarrab
Keyword(s):  
Liquid Chromatography ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Preparative Hplc ◽  
Two Dimensional ◽  
Phytochemical Study ◽  
Aerial Parts ◽  
Dicaffeoylquinic Acid ◽  
Vacuum Liquid Chromatography ◽  
Hydroethanolic Extract

Background: Artemisia ciniformis (A. ciniformis) belongs to the genus Artemisia and grows at northeast of Iran. The current phytochemical study was carried out on the most potent extract in cell-free antioxidant assays. Methods: Hydroethanolic extract of the aerial parts was fractionated using vacuum-liquid chromatography (VLC). The selected fraction from the previous cell-free antioxidant study was purified by semi-preparative HPLC. The structures of isolated compounds were identified using one- and two-dimensional NMR and ESIMS techniques. Results: Three identified compounds in this study were the known isomers of dicaffeoylquinic acid (DCQ), including 3,5- DCQ (isochlorogenic acid A), 3,4-DCQ (isochlorogenic acid B) and 4,5-DCQ (isochlorogenic acid C). Conclusion: The outstanding free radical scavenging potential in the hydroethanolic extract of A. ciniformis might be partly related to the presence of isochlorogenic acid derivatives.

scholarly journals AKTIVITAS ANTIBAKTERI FRAKSI SAPONIN DARI KULIT BATANG TUMBUHAN KASTURI (Mangifera casturi)

BIOSCIENTIAE ◽  
2018 ◽  
Vol 7 (2) ◽  
Author(s):  
K. Rosyidah ◽  
S. A. Nurmuhaimina ◽  
N. Komari ◽  
M. D. Astuti
Keyword(s):  
Antibacterial Activity ◽  
Liquid Chromatography ◽  
Silica Gel ◽  
Methanol Extract ◽  
Stem Bark ◽  
E Coli ◽  
Vacuum Liquid Chromatography

This research to study antibacterial activity (E.coli and S.aureus) of saponin fractions from stem bark of Mangifera casturi. Powdered of stem bark of M.casturi (512,67 g) were extracted with methanol. Methanol extract (32.57 g) was partitionated with n-hexane to give saponin extract. Saponin extract (5.98 g) was partitionated by Vacuum Liquid Chromatography (VLC) over silica gel to give 39 fractions were grouped into four major fractions A-D by combining fractions with similar TLC profile. Every fractions studied antibacterial activity with E. coli and S. Aureus with difusi methode. Fraction A most active then other fraction with inhibition diameter 10.3 ± 0.5 mm (E.coli) and 10.8 ± 0.3 mm (S.aureus).

scholarly journals Antisnake venom activity and isolation of quercetin from the leaf of Neocarya macrophylla (Sabine) Prance ex F. White (Malpighiales: Chrysobalanaceae)

2019 ◽  
Vol 6 (13) ◽  
pp. 381-389 ◽  
Author(s):  
A. J. Yusuf ◽  
M. I. Abdullahi ◽  
A. M. Musa ◽  
A. K. Haruna ◽  
V. Mzozoyana ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Methanol Extract ◽  
Soluble Fraction ◽  
Gel Filtration ◽  
Scientific Basis ◽  
Traditional Treatment ◽  
Snake Envenomation ◽  
Nmr Data ◽  
Pla2 Enzyme ◽  
Vacuum Liquid Chromatography

Snake envenomation is a major cause of death and disability in many developing countries. Neocarya macrophylla (Sabine) Prance ex F. White (Malpighiales: Chrysobalanaceae) have been reportedly used in traditional medicine to treat snake envenomation. Bioassay-guided isolation of antivenom principles was carried out on the leaf of N. macrophylla against Naja nigricollis venom. The methanol extract of N. macrophylla leaf and its ethylacetate and n-butanol fraction significantly (P < 0.05) protected mice against venom-induced lethality with 100% survival rate and there was remarkable inhibition of the poisonous effects of PLA2 enzyme by the extracts and the fractions. Encouraged by this result, the ethylacetate soluble fraction was subjected to purification using vacuum liquid chromatography and gel filtration which led to the isolation of quercetin as the bioactive principle. The identity of the compound was determined on the basis of chemical tests, and by comparison of its 1H-NMR data with literature, this is the first report of isolation of this compound from the leaf of the plant. However, the results of the study suggests that the leaf of N. macrophylla possess significant antisnake venom activity which provide the scientific basis for its use in traditional treatment of snakebites.

scholarly journals ISOLASI DAN UJI SITOTOKSIK SENYAWA LIMONEN DARI KULIT BATANG KASTURI (Mangifera casturi)

BIOSCIENTIAE ◽  
2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Kholifatu Rosyidah
Keyword(s):  
Gas Chromatography ◽  
Liquid Chromatography ◽  
Cancer Cell ◽  
Mass Spectroscopy ◽  
Brine Shrimp ◽  
Methylene Chloride ◽  
Cell Leukemia ◽  
Pure Compounds ◽  
Vacuum Liquid Chromatography ◽  
Gas Chromatography Mass Spectroscopy

The air-stem barks of M.casturi were extracted with Methylene Chloride (MTC). The MTC extract’s had treatment with Brine Shrimp Lethality Test (BSLT) than analyzed with probit and resulted LC50= 47,31 ppm. MTC extract’s was fractionated by Vacuum Liquid Chromatography and recrystalization obtained pure compounds. The compounds was analyzed with GC-MS (Gas chromatography-Mass Spectroscopy) and cytotoxic test with cancer cell Leukemia P388. This compound is limonene and have IC50=70 ppm.

Anticancer Properties of Asian Water Monitor Lizard (Varanus salvator), Python (Malayopython reticulatus) and Tortoise (Cuora kamaroma amboinensis)

2020 ◽  
Vol 20 (13) ◽  
pp. 1558-1570
Author(s):  
Shareni Jeyamogan ◽  
Naveed A. Khan ◽  
Kuppusamy Sagathevan ◽  
Ruqaiyyah Siddiqui
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Amino Acid ◽  
Anticancer Agents ◽  
Liquid Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry ◽  
Adenocarcinoma Cells ◽  
Monitor Lizard ◽  
Varanus Salvator ◽  
Asian Water

Background: Cancer contributes to significant morbidity and mortality despite advances in treatment and supportive care. There is a need for the identification of effective anticancer agents. Reptiles such as tortoise, python, and water monitor lizards are exposed to heavy metals, tolerate high levels of radiation, feed on rotten/germ-infested feed, thrive in unsanitary habitat and yet have prolonged lifespans. Such species are rarely reported to develop cancer, suggesting the presence of anticancer molecules/mechanisms. Methods: Here, we tested effects from sera of Asian water monitor lizard (Varanus salvator), python (Malayopython reticulatus) and tortoise (Cuora kamaroma amboinensis) against cancer cells. Sera were collected and cytotoxicity assays were performed using prostate cancer cells (PC3), Henrietta Lacks cervical adenocarcinoma cells (HeLa) and human breast adenocarcinoma cells (MCF7), as well as human keratinized skin cells (Hacat), by measuring lactate dehydrogenase release as an indicator for cell death. Growth inhibition assays were performed to determine the effects on cancer cell proliferation. Liquid chromatography mass spectrometry was performed for molecular identification. Results: The findings revealed that reptilian sera, but not bovine serum, abolished viability of Hela, PC3 and MCF7 cells. Samples were subjected to liquid chromatography mass spectrometry, which detected 57 molecules from V. salvator, 81 molecules from Malayopython reticulatus and 33 molecules from C. kamaroma amboinensis and putatively identified 9 molecules from V. salvator, 20 molecules from Malayopython reticulatus and 9 molecules from C. kamaroma amboinensis when matched against METLIN database. Based on peptide amino acid composition, binary profile, dipeptide composition and pseudo-amino acid composition, 123 potential Anticancer Peptides (ACPs) were identified from 883 peptides from V. salvator, 306 potential ACPs from 1074 peptides from Malayopython reticulatus and 235 potential ACPs from 885 peptides from C. kamaroma amboinensis. Conclusion: To our knowledge, for the first time, we reported comprehensive analyses of selected reptiles’ sera using liquid chromatography mass spectrometry, leading to the identification of potentially novel anticancer agents. We hope that the discovery of molecules from these animals will pave the way for the rational development of new anticancer agents.

scholarly journals Predicting Pharmacokinetic Properties of Potential Anticancer Agents via Their Chromatographic Behavior on Different Reversed Phase Materials

2021 ◽  
Vol 22 (8) ◽  
pp. 4257
Author(s):  
Małgorzata Janicka ◽  
Anna Mycka ◽  
Małgorzata Sztanke ◽  
Krzysztof Sztanke
Keyword(s):  
Liquid Chromatography ◽  
Anticancer Agents ◽  
Skin Permeation ◽  
Reversed Phase ◽  
Chromatographic Behavior ◽  
Chromatographic Retention ◽  
Quantitative Structure ◽  
Animal Testing ◽  
Structure Activity ◽  
Pharmacokinetic Properties

The Quantitative Structure-Activity Relationship (QSAR) methodology was used to predict biological properties, i.e., the blood–brain distribution (log BB), fraction unbounded in the brain (fu,brain), water-skin permeation (log Kp), binding to human plasma proteins (log Ka,HSA), and intestinal permeability (Caco-2), for three classes of fused azaisocytosine-containing congeners that were considered and tested as promising drug candidates. The compounds were characterized by lipophilic, structural, and electronic descriptors, i.e., chromatographic retention, topological polar surface area, polarizability, and molecular weight. Different reversed-phase liquid chromatography techniques were used to determine the chromatographic lipophilicity of the compounds that were tested, i.e., micellar liquid chromatography (MLC) with the ODS-2 column and polyoxyethylene lauryl ether (Brij 35) as the effluent component, an immobilized artificial membrane (IAM) chromatography with phosphatidylcholine column (IAM.PC.DD2) and chromatography with end-capped octadecylsilyl (ODS) column using aqueous solutions of acetonitrile as the mobile phases. Using multiple linear regression, we derived the statistically significant quantitative structure-activity relationships. All these QSAR equations were validated and were found to be very good. The investigations highlight the significance and possibilities of liquid chromatographic techniques with three different reversed-phase materials and QSARs methods in predicting the pharmacokinetic properties of our important organic compounds and reducing unethical animal testing.

scholarly journals Enhancing Postgraduate Learning and Teaching: Postgraduate Summer School in Dairy Science

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Pietro Celi ◽  
Gianfranco Gabai ◽  
Massimo Morgante ◽  
Luigi Gallo
Keyword(s):  
Summer School ◽  
Research Collaboration ◽  
Learning Experience ◽  
Scientific Investigation ◽  
Core Component ◽  
Learning And Teaching ◽  
Transferable Skills ◽  
The Core ◽  
Dairy Science ◽  
The University

Dairy science is a multidisciplinary area of scientific investigation and Ph.D. students aiming to do research in the field of animal and/or veterinary sciences must be aware of this. Ph.D. students often have vast spectra of research interests, and it is quite challenging to satisfy the expectation of all of them. The aim of this study was to establish an international Ph.D. training program based on research collaboration between the University of Sydney and the University of Padova. The core component of this program was a two-week Postgraduate Summer School in Dairy Science, which was held at the University of Padova, for Ph.D. students of both universities. Therefore, we designed a program that encompassed seminars, workshops, laboratory practical sessions, and farm visits. Participants were surveyed using a written questionnaire. Overall, participants have uniformly praised the Summer School calling it a rewarding and valuable learning experience. The Ph.D. Summer School in Dairy Science provided its participants a positive learning experience, provided them the opportunity to establish an international network, and facilitated the development of transferable skills.

Isolation of the antidiarrhoeal tiliroside and its derivative from Waltheria indica leaf extract

2021 ◽  
Vol 25 (1) ◽  
pp. 86-92
Author(s):  
B.A. Ayinde ◽  
J.O. Owolabi ◽  
I.S. Uti ◽  
P.C. Ogbeta ◽  
M.I. Choudhary
Keyword(s):  
Silica Gel ◽  
Column Chromatography ◽  
Methanol Extract ◽  
Preparative Thin Layer Chromatography ◽  
Inhibitory Effects ◽  
Aqueous Fraction ◽  
Vacuum Liquid Chromatography ◽  
Ileum Contraction ◽  
Layer Chromatography ◽  
Dose Dependent

The antidiarrhoeal effect of Waltheria indica methanol extract and fractions have been reported earlier but, the present work examined the intestinal relaxant effects of two flavonoid-phenyl propanoids isolated from the methanol extract. The active aqueous fraction was subjected to vacuum liquid chromatography using dichloromethane with increasing concentration of ethyl acetate, and that of methanol and water successively. The ten (10) fractions obtained were combined to give seven (7). The fraction 2 (C, D) was subjected to preparative thin layer chromatography on silica gel GF254 (10-40μm) using CHCl3-CH3OH (8:2) to obtain compound coded F2. Fraction 4 (F) was subjected to column chromatography using silica gel (60-120μm mesh) and eluted with  dichloromethane with increasing concentrations of methanol. Fractions 9-28 were combined and subjected to column  chromatography using chloroform with increasing concentration of methanol. The fractions 1-16 of these were purified on Sephadex LH-20 to obtain compound BAA. The identities of the two compounds were established using spectroscopic methods. The  antidiarrheal effect of compound F2 was evaluated on mice using charcoal transit (100,200, 400mg/kg), castor oil (40, 60 mg/kg)  while the two compounds were examined for their inhibitory effects on Ach-induced ileum contraction. The effects of the  compounds were compared with loperamide (3mg/kg) and atropine (80μg). Compounds F2 and BAA were identified as tiliroside and 3’’’, 5’’’-dimethoxy tiliroside respectively. Tiliroside inhibited the charcoal transition in the animals in a dose dependent pattern with 400mg/ mL eliciting 63.41% inhibition compared to 59.23% produced by loperamide. The compound also elicited significantly (P<0.05) prolonged onset of stooling and reduced the number and weight of stools produced lower than the control. The two  compounds drastically inhibited the Ach-induced contractions of the ileum. The compound, tiliroside at 10mg, completely abolished  the contraction by Ach unlike 3’’’, 5’’’-dimethoxy tiliroside which reduced the contraction to 1.92% at 20mg. The identified compounds seem to be responsible for the ethnomedicinal use of the plant in treating diarrhea.

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