@article {1449, title = {Assessment of Cytotoxicity of Smokeless Tobacco (Shammah) In Hepg2 and WRL68 Cells Line}, journal = {Pharmacognosy Journal}, volume = {7}, year = {2015}, month = {29th Apr, 2015}, pages = {242-248}, type = {Original Article}, chapter = {242}, abstract = {

Shammah is a traditional form of chewing tobacco [Smokeless tobacco, (ST)] that is commonly used in the Middle east specially Saudi Arabia (KSA), Yemen and Sudan. The cytotoxicity of Sudanese and Yemenis ST hexane and methanol extracts was evaluated using MTT assay. Annexin-V assay has been used to detect the induction of apoptosis. Luminescence based assay also been conducted to check the level of caspases enzyme. The involvement of cell cycle check point arrest has been performed using flow cytometry analysis. The current study found that ST has the capacity to induce cell toxicity in human liver cells. The inhibitory capacity of ST in HepG2 and WRL 68 has been found to be 151 \± 2.5 and 305 \± 11.5 \μg/ml for 24 h. An early apoptosis induction in HepG2 cells was observed by annexin V assay, which clearly exhibited significantly increased early and late apoptosis phases both at 24 and 48 h. Both the caspases-8 and-9 level was found to be increased by the introduction of ST to HepG2 cells significantly (p\<0.05). Moreover the ST extract was able to arrest the cell cycle check point at G2/M phase. A significantly increasing pattern of hypodiploid phases of cells also been observed, which confirm the apoptosis induction again. Collectively, results presented in this study demonstrated that the ST, which is used as a euphoritic substance of abuse also, has significant level of toxicity in human cells. Moreover the mode of cell death was found to be though programmed cell death which is closely associated with cell cycle arrest.

Key words: Hepatotoxicity, In vitro models, Saudi Arabia, Smokeless tobacco, Substance Absue Research Centre, Shammah.

}, keywords = {Hepatotoxicity, In vitro models, Saudi Arabia, Shammah., Smokeless tobacco, Substance Absue Research Centre}, author = {Siddig Ibrahim Abdelwahab and Syam Mohan, and Manal Moahmed Elhassan Taha and Rashad Bin Mohammed Alsanosy and Hamed Karimian} } @article {1538, title = {Cytotoxicity and Oral Acute Toxicity Studies of b-mangostin Isolated from Cratoxylum arborescens}, journal = {Pharmacognosy Journal}, volume = {6}, year = {2014}, month = {18th Feb,2014}, pages = {47-56}, type = {Original Article}, abstract = {

Introduction: The objective of this study was to investigate the cytotoxicity and oral acute toxicity of \β-mangostin isolated from Cratoxylum arborescens. Material and methods: Healthy male and female ICR mice (8 weeks) were fed orally with 250 and 500mg/kg of \β-mangostin. Body weight of each animal was measured and any gross behavioral change was observed daily. Hematological and clinical biochemical parameters as well as histopathological analysis were carried out on 15th day. The level of oxidative stress was analyzed using MDA and GSH measurement.Discussion: The results showed that oral administration of the \β-mangostin had no adverse effect on the growth rate, hematological and clinical biochemical parameters. Histological studies showed that the treatments did not induce any pathological changes in the liver and kidney. The compound at both the doses did not alter the oxidative stress biomarkers. The in vitro cytotoxicity of \β Mangostin was investigated in HepG2, A549, MCF-7, MDA-MB-231 and PC3 cells. There was significant cytotoxicity in both type of breast cancer cells (MCF-7 and MDA-MB-231). In conclusion, our results show that there was no treatment-related acute toxicity in mice following 14-days oral administration of 250 and 500mg/kg of \β-mangostin. Conclusion: The results showed that the compound can be selected for detailed in vitro and in vivo breast cancer research.

Key words: Cratoxylum arborescens, β-mangostin, acute toxicity, anti-cancer.

}, keywords = {Acute toxicity, Anti-cancer, Cratoxylum arborescens, β-mangostin}, author = {Suvitha Syam, and Ahmad Bustamam, and Rasedee Abdullah, and Mohamed Aspollah Sukari, and Najihah Mohd Hashim, and Maizatulakmal Yahayu, and Pouya Hassandarvish, and Syam Mohan, and Siddig Ibrahim Abdelwahab} }