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RISS 인기검색어
- 검색키워드
- 저자 : Montazeri Leila (검색결과 3 건)
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Bcl-2 Gene Expression in Human Breast Cancers in Iran
Rostamizadeh, Leila,Fakhrjou, Ashraf,Montazeri, Vahid,Estiar, Mehrdad Asghari,Naghavi-Behzad, Mohammad,Hosseini, Somayyeh,Sakhinia, Masoud,Sakhinia, Ebrahim Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.7
Background: Breast cancer is among the five most common cancers and ranks first among cancers diagnosed in Iranian women. Screening and treatment of this disease with molecular methods, especially regarding high incidences at early age and advanced stage, is essential. Several genes with altered expression have been identified by cDNA microarray studies in breast cancer, with the Bcl-2 gene indicated as a likely candidate. In this study, we studied Bcl-2 gene expression levels in parallel tumor and non-tumor breast tissues. Materials and Methods: Forty samples including 21 tumor, 16 non tumor (marginal) and 3 benign breast tissues which were all pathologically diagnosed, were subjected to RNA extraction and polyA RT-PCR with the expression level of Bcl-2 quantified using real-time PCR. Results: There is higher expression levels of the Bcl-2 gene in tumor samples compared with marginal samples, but not attaining significance(p>0.05). Bcl-2 expression in 14 (66.7%) of the cases of tumor samples and 9 (56.3%) cases of the marginal samples were positive. Comparison of the expression of the Bcl-2 gene in histological grade showed that a high expression of Bcl-2 was associated with a high histological grade (p<0.41). Conclusions: Our data suggests that dysregulated Bcl-2 gene expression is potentially involved in the pathogenesis of breast cancer. Using gene expression analysis may significantly improve our ability for screening cancer patients and will prove a powerful tool in the diagnosis and prognostic evaluation of the disease whilst aiding the cooperative group trials in the Bcl-2 based therapy project.
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Assessing Breast Cancer Risk among Iranian Women Using the Gail Model
Khazaee-Pool, Maryam,Majlessi, Fereshteh,Nedjat, Saharnaz,Montazeri, Ali,Janani, leila,Pashaei, Tahereh Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.8
Background: Breast cancer risk assessment is a helpful method for estimating development of breast cancer at the population level. Materials and Methods: In this cross-sectional study, participants consisted of a group of 3,847 volunteers ($mean{\pm}SD$ age: $463{\pm}7.59$ years) in a convenience sample of women referred to health centers affiliated to Tehran University of Medical Sciences in Tehran, Iran. The risk of breast cancer was estimated by applying the National Cancer Institute's online version of the Gail Risk Assessment Tool. Results: Some 24.9% of women reported having one first-degree female relative with breast cancer, with 8.05% of them having two or more first-degree relatives with breast cancer. The mean five-year risk of breast cancer for all participants was $1.61{\pm}0.73%$, and 9.36% of them had a five-year risk of breast cancer >1.66%. The mean lifetime risk of breast cancer was $11.7{\pm}3.91%$. Conclusions: The Gail model is useful for assessing probability of breast cancer in Iranian women. Based on the their breast cancer risk, women may decide to accept further screening services.
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Generation of Scalable Hepatic Micro-Tissues as a Platform for Toxicological Studies
Darakhshan Sara,Bidmeshki Pour Ali,Kowsari-Esfahan Reza,Vosough Massoud,Montazeri Leila,Ghanian Mohammad Hossein,Baharvand Hossein,Piryaei Abbas 한국조직공학과 재생의학회 2020 조직공학과 재생의학 Vol.17 No.4
Background: Currently, there is an urgent need for scalable and reliable in vitro models to assess the effects of therapeutic entities on the human liver. Hepatoma cell lines, including Huh-7, show weakly resemblance to human hepatocytes, limiting their significance in toxicity studies. Co-culture of hepatic cells with non-parenchymal cells, and the presence of extracellular matrix have been shown to influence the biological behavior of hepatocytes. The aim of this study was to generate the scalable and functional hepatic micro-tissues (HMTs). Methods: The size-controllable HMTs were generated through co-culturing of Huh-7 cells by mesenchymal stem cells and human umbilical vein endothelial cells in a composite hydrogel of liver-derived extracellular matrix and alginate, using an air-driven droplet generator. Results: The generated HMTs were functional throughout a culture period of 28 days, as assessed by monitoring glycogen storage, uptake of low-density lipoprotein and indocyanine green. The HMTs also showed increased secretion levels of albumin, alpha-1-antitrypsin, and fibrinogen, and production of urea. Evaluating the expression of genes involved in hepatic-specific and drug metabolism functions indicated a significant improvement in HMTs compared to two-dimensional (2D) culture of Huh-7 cells. Moreover, in drug testing assessments, HMTs showed higher sensitivity to hepatotoxins compared to 2D cultured Huh-7 cells. Furthermore, induction and inhibition potency of cytochrome P450 enzymes confirmed that the HMTs can be used for in vitro drug screening. Conclusion: Overall, we developed a simple and scalable method for generation of liver micro-tissues, using Huh-7, with improved hepatic-specific functionality, which may represent a biologically relevant platform for drug studies.
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