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Jafari N, Bahreini N, Dehghani A, Lak Y, Mirmohammadali SN, Samavat S, Shami A, Karimizand M, Goudarzi MA, Asbaghi O. The effects of purslane consumption on lipid profile and C-reactive protein: A systematic review and dose-response meta-analysis. Food Sci Nutr 2023; 11:6728-6748. [PMID: 37970383 PMCID: PMC10630813 DOI: 10.1002/fsn3.3555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 06/21/2023] [Accepted: 06/24/2023] [Indexed: 11/17/2023] Open
Abstract
Earlier investigations into the impact of purslane, Portulaca oleracea, on lipid profile and C-reactive protein (CRP) produced contradictory findings. The effect of purslane consumption on lipid profiles and CRP was assessed in this comprehensive review and meta-analysis. We conducted a thorough literature search in online databases, including PubMed, Scopus, the Cochrane library, and ISI Web of Science to find relevant randomized controlled trials up to June 2023. By incorporating 14 effect sizes from 13 RCTs, we were able to show that purslane consumption significantly decreases serum triglyceride (TG) (WMD: -16.72, 95% CI: -22.49, -10.96 mg/dL, p < .001), total cholesterol (TC) (WMD: -9.97, 95% CI: -19.86, -0.07 mg/dL, p = .048), and CRP (WMD: -1.22, 95% CI: -1.63, -0.80 mg/L, p < .001) levels in patients compared to the control group. In addition, purslane consumption significantly increases high-density lipoprotein (HDL-C) (WMD: 4.09, 95% CI: 1.77, 6.41 mg/dL, p = .001) levels. However, purslane consumption did not affect low-density lipoprotein (LDL-C) levels. According to a suggested optimal dosage, purslane consumption is considered to be safe up to 30 g/day. Purslane consumption can significantly improve cardiovascular health by improving lipid profile and inflammation status.
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Affiliation(s)
- Naser Jafari
- University of Applied Science and Technology – Allameh Tabarsi CenterTehranIran
| | - Nazgol Bahreini
- Student Research CommitteeTabriz University of Medical SciencesTabrizIran
- Nutrition Research Center, School of Nutrition and Food SciencesTabriz University of Medical SciencesTabrizIran
| | - Azadeh Dehghani
- Nutrition Research Center, Department of Community Nutrition, Faculty of Nutrition and Food ScienceTabriz University of Medical SciencesTabrizIran
| | | | | | - Simin Samavat
- Department of Cellular and Molecular Nutrition, School of Nutrition Sciences and DieteticsTehran University of Medical SciencesTehranIran
| | - Amirhossein Shami
- Student of Cellular Molecular Biology, Faculty of ScienceArdabil Branch, Islamic Azad UniversityArdabilIran
| | | | | | - Omid Asbaghi
- Cancer Research CenterShahid Beheshti University of Medical sciencesTehranIran
- Student Research CommitteeShahid Beheshti University of Medical SciencesTehranIran
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Jafari N, Shoaibinobarian N, Dehghani A, Rad A, Mirmohammadali SN, Alaeian MJ, Hamedi Y, Zamani M, Goudarzi MA, Asbaghi O. The effects of purslane consumption on glycemic control and oxidative stress: A systematic review and dose–response meta‐analysis. Food Sci Nutr 2023. [DOI: 10.1002/fsn3.3311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
Affiliation(s)
- Naser Jafari
- University of Applied Science and Technology ‐ Allameh Tabarsi Center Tehran Iran
| | - Nargeskhatoon Shoaibinobarian
- Department of Nutrition, School of Medical Sciences and Technologies Islamic Azad University, Science and Research Branch Tehran Iran
| | - Azadeh Dehghani
- Nutrition Research Center, Department of Community Nutrition, Faculty of Nutrition and Food Science Tabriz University of Medical Sciences Tabriz Iran
| | - Amirhosein Rad
- Nutrition Department, Faculty of Health and Nutrition Lorestan University of Medical Sciences Khoramabad Iran
| | | | | | - Yasaman Hamedi
- Department of Physical Education Central Tehran Branch, Islamic Azad University Tehran Iran
| | - Mohamad Zamani
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics Tehran University of Medical Sciences Tehran Iran
| | | | - Omid Asbaghi
- Cancer Research Center Shahid Beheshti University of Medical sciences Tehran Iran
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Abstract
Exosomes include plasma-transported vesicles that are secreted by human tissues and reflect metabolic status. The profile of exosomes (particularly microRNA content) is altered in metabolic disease. In type 2 diabetes mellitus, exosomes circulating in plasma induce transcriptional changes related to tumour progression and pro-metastatic phenotypes in target cancer cells, potentially linking obesity to cancer progression and metastasis.
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Affiliation(s)
- Naser Jafari
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA, USA
| | - Pablo Llevenes
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA, USA
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA
| | - Gerald V Denis
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA, USA.
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA.
- Section of Hematology and Medical Oncology, Department of Medicine, Boston University Medical Center, Boston, MA, USA.
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Ennis CS, LLevenes P, Kolla M, Jafari N, Belkina AC, Denis GV. Abstract P1-04-12: Pathway analysis of immune checkpoint gene regulation as altered in Type 2 diabetes: Implications for breast cancer patients treated with checkpoint inhibitors. Cancer Res 2022. [DOI: 10.1158/1538-7445.sabcs21-p1-04-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Mediators of immune exhaustion are an active area of breast cancer research. Type II diabetes mellitus (T2D), the most common metabolic disorder, both increases breast cancer incidence and decreases survival. Despite this clear link, impacts of the T2D immune phenotype on cancer remain poorly understood. We have previously demonstrated that the chronic inflammatory state of T2D leads to immune exhaustion, but how the T2D breast microenvironment interacts with T cells is unclear. Exosomes are crucial components of intercellular communication and are associated with increased breast cancer aggressiveness. Given this function, we hypothesized that T2D adipocyte-derived exosomes drive T cell exhaustion. Here, we characterize expression patterns and regulatory networks driving T2D immune phenotypes. Methods: Exosomes were first isolated from culture media of mature human primary breast adipocytes from, either insulin-sensitive (IS), or rendered insulin-resistant (IR) by ex vivo TNFα-treatment. Human primary peripheral blood mononuclear cells (PBMCs) from nondiabetic (ND) and T2D donors were stimulated ex vivo with plate bound anti-CD3 (5 ug/ml) and soluble CD28 (2 ug/ml) for 48 hours and treated with exosomes. Different small molecule inhibitors of the bromo and extraterminal (BET) protein family, including the pan-BET inhibitor JQ1 and the BRD4-selective PROTAC degrader MZ-1, were used to identify BET protein-regulated targets. We also used the AMP-activating protein kinase (AMPK) inhibitor Compound-C to identify the role of this pathway in activating this major epigenetic player. Multicolor flow cytometry was subsequently performed with an LSRII cytometer to assess expression of inhibitory receptors PD-1, CTLA-4, TIM-3 and TIGIT on immune subsets. Events for live cells were analyzed in FlowJo. Cytokines were collected from conditioned media and analyzed via Th17 cytokine staining panel. Results: We observed that exosomes derived from IR breast adipocytes increase expression of immune exhaustion markers in CD4+ and CD8+ T cells, compared to IS or ND matched controls. Additionally, we define signal transduction among BET proteins, AMPK signaling, and immune checkpoint expression. Lastly, we identify changes in cytokine profile between IS and IR treated groups. Taken together, our findings suggest a network of immune regulation imparted by exosomes. Impacts: Metabolic health does not inform the current standard of care in breast medical oncology, which contributes to a large, underserved population in which treatment plans are not well established or optimized for their comorbidities. Our findings offer a deeper understanding of immune checkpoint regulation in T2D and suggest new insights into treatment of diabetic breast cancer patients.
Citation Format: Christina S. Ennis, Pablo LLevenes, Manohar Kolla, Naser Jafari, Anna C Belkina, Gerald V. Denis. Pathway analysis of immune checkpoint gene regulation as altered in Type 2 diabetes: Implications for breast cancer patients treated with checkpoint inhibitors [abstract]. In: Proceedings of the 2021 San Antonio Breast Cancer Symposium; 2021 Dec 7-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2022;82(4 Suppl):Abstract nr P1-04-12.
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Qiu Y, Ross C, Jafari N, Kolla M, Llevenes P, Ennis C, Mazzeo CS, Mahdaviani K, Ko NY, Denis GV. Abstract P3-06-02: Exosomes produced by adipocytes induce EMT, immune exhaustion and tumor metastasis, in both in vivo and in vitro models of TNBC. Cancer Res 2022. [DOI: 10.1158/1538-7445.sabcs21-p3-06-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Type 2 Diabetes (T2D) is a chronic inflammatory disease characterized by inflamed adipose tissue. Patients with triple negative breast cancer (TNBC) and comorbid T2D have higher risk of metastasis and shorter survival. However, mechanisms that couple T2D to TNBC outcomes are unknown. Here we hypothesize that exosomes, small vesicles secreted by tumor microenvironment breast adipocytes, drive epithelial-to-mesenchymal transition (EMT) in TNBC, immune exhaustion and metastasis via Ampk-Akt signaling.Methods: Exosomes were purified from conditioned media of 3T3-L1 mature adipocytes that were insulin-sensitive (IS) or insulin-resistant (IR), then characterized and quantified by NanoSight and surface markers, CD63. Murine 4T1 cells, a TNBC model, were treated with exosomes in vitro (3 days). To establish 3D organoids, 4T1 spheroids were treated with exosomes and embedded in Matrigel. For in vivo models, mammary fat pads of BALB/c mice were injected with 4T1 cells treated with IS vs IR exosomes. 4T1 tumors were harvested and mRNA extracted for qPCR, RNAseq, and Ingenuity Pathway Analysis. Metastatic sites in lung and liver were visualized by H&E staining and clonogenic assay. Immune exhaustion markers of tumor infiltrated lymphocytes (TILs) were measured by flow cytometry. Results: In 4T1 cells treated with IR exosomes, EMT was upregulated and PD-L1 expression increased. Tumor-bearing mice exhibited metastasis in exosome-treated groups, visualized by microscopy and clonogenic assay. Immune exhaustion markers showed modified expression in TILs from exosome-treated groups. RNA-seq analysis revealed differences among exosome-treated groups that suggest dysregulated Ampk-Akt pathways.Conclusion: Exosomes from IR adipocytes modify the tumor microenvironment, increase EMT and immune exhaustion markers on tumor cells and TILs, and promote metastasis to distant organs through Ampk-Akt. Metabolic diseases such as T2D reshape the TNBC tumor microenvironment, promoting metastasis and decreasing survival. Clearly, TNBC patients with T2D should be more closely monitored for metastasis than metabolically normal patients, with metabolic medications considered.
Citation Format: Yuhan Qiu, Conor Ross, Naser Jafari, Manohar Kolla, Pablo Llevenes, Christina Ennis, Carla S Mazzeo, Kiana Mahdaviani, Naomi Y Ko, Gerald V Denis. Exosomes produced by adipocytes induce EMT, immune exhaustion and tumor metastasis, in both in vivo and in vitro models of TNBC [abstract]. In: Proceedings of the 2021 San Antonio Breast Cancer Symposium; 2021 Dec 7-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2022;82(4 Suppl):Abstract nr P3-06-02.
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Jafari N, Kolla M, Meshulam T, Shafran JS, Qiu Y, Casey AN, Pompa IR, Ennis CS, Mazzeo CS, Rabhi N, Farmer SR, Denis GV. Adipocyte-derived exosomes may promote breast cancer progression in type 2 diabetes. Sci Signal 2021; 14:eabj2807. [PMID: 34813359 PMCID: PMC8765301 DOI: 10.1126/scisignal.abj2807] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Obesity and metabolic diseases, such as insulin resistance and type 2 diabetes (T2D), are associated with metastatic breast cancer in postmenopausal women. Here, we investigated the critical cellular and molecular factors behind this link. We found that primary human adipocytes shed extracellular vesicles, specifically exosomes, that induced the expression of genes associated with epithelial-to-mesenchymal transition (EMT) and cancer stem–like cell (CSC) traits in cocultured breast cancer cell lines. Transcription of these genes was further increased in cells exposed to exosomes shed from T2D patient–derived adipocytes or insulin-resistant adipocytes and required the epigenetic reader proteins BRD2 and BRD4 in recipient cells. The thrombospondin family protein TSP5, which is associated with cancer, was more abundant in exosomes from T2D or insulin-resistant adipocytes and partially contributed to EMT in recipient cells. Bioinformatic analysis of breast cancer patient tissue showed that greater coexpression of COMP (which encodes TSP5) and BRD2 or BRD3 correlated with poorer prognosis, specifically decreased distant metastasis–free survival. Our findings reveal a mechanism of exosome-mediated cross-talk between metabolically abnormal adipocytes and breast cancer cells that may promote tumor aggressiveness in patients with T2D.
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Affiliation(s)
- Naser Jafari
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA 02118, USA
| | - Manohar Kolla
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA 02118, USA
| | - Tova Meshulam
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
| | - Jordan S. Shafran
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA 02118, USA
- Current affiliation: Abbott Laboratories, Abbott Park, IL 60064, USA
| | - Yuhan Qiu
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA 02118, USA
| | - Allison N. Casey
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA 02118, USA
- Current affiliation: University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Isabella R. Pompa
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA 02118, USA
| | - Christina S. Ennis
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA 02118, USA
| | - Carla S. Mazzeo
- Section of Gastroenterology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Nabil Rabhi
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
| | - Stephen R. Farmer
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
| | - Gerald V. Denis
- Boston University-Boston Medical Center Cancer Center, Boston University School of Medicine, Boston, MA 02118, USA
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA
- Shipley Prostate Cancer Research Professor, Boston University School of Medicine, Boston, MA 02118, USA
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Alcusky M, Thomas RB, Jafari N, Keith SW, Kee A, Del Canale S, Lombardi M, Maio V. Reduction in unplanned hospitalizations associated with a physician focused intervention to reduce potentially inappropriate medication use among older adults: a population-based cohort study. BMC Geriatr 2021; 21:218. [PMID: 33789589 PMCID: PMC8011227 DOI: 10.1186/s12877-021-02172-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/17/2021] [Indexed: 11/24/2022] Open
Abstract
Background A multimodal general practitioner-focused intervention in the Local Health Authority (LHA) of Parma, Italy, substantially reduced the prevalence of potentially inappropriate medication (PIM) use among older adults. Our objective was to estimate changes in hospitalization rates associated with the Parma LHA quality improvement initiative that reduced PIM use. Methods This population-based longitudinal cohort study was conducted among older residents (> 65 years) using the Parma LHA administrative healthcare database. Crude and adjusted unplanned hospitalization rates were estimated in 3 periods (pre-intervention: 2005–2008, intervention: 2009–2010, post-intervention: 2011–2014). Multivariable negative binomial models estimated trends in quarterly hospitalization rates among individuals at risk during each period using a piecewise linear spline for time, adjusted for time-dependent and time-fixed covariates. Results The pre-intervention, intervention, and post-intervention periods included 117,061, 107,347, and 121,871 older adults and had crude hospitalization rates of 146.2 (95% CI: 142.2–150.3), 146.8 (95% CI: 143.6–150.0), and 140.8 (95% CI: 136.9–144.7) per 1000 persons per year, respectively. The adjusted pre-intervention hospitalization rate was declining by 0.7% per quarter (IRR = 0.993; 95% CI: 0.991–0.995). The hospitalization rate declined more than twice as fast during the intervention period (1.8% per quarter, IRR = 0.982; 95% CI: 0.979–0.985) and was nearly constant post-intervention (IRR: 0.999; 95% CI: 0.997–1.001). Contrasting model predictions for the intervention period (Q1 2009 to Q4 2010), the intervention was associated with 1481 avoided hospitalizations. Conclusion In a large population of older adults, a multimodal general practitioner-focused intervention to decrease PIM use was associated with a decline in the unplanned hospitalization rate. Such interventions to reduce high risk medication use among older adults warrant consideration by health systems seeking to improve health outcomes and reduce high-cost acute care utilization. Supplementary Information The online version contains supplementary material available at 10.1186/s12877-021-02172-3.
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Affiliation(s)
- M Alcusky
- Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Albert Sherman Building, 6th Floor, 368 Plantation Street, Worcester, MA, USA.
| | - R B Thomas
- Jefferson College of Population Health, Thomas Jefferson University, 901 Walnut St., 10th Floor, Philadelphia, PA, 19107, USA
| | - N Jafari
- Center for Research in Medical Education and Health Care, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - S W Keith
- Division of Biostatistics, Department of Pharmacology and Experimental Therapeutics, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - A Kee
- Jefferson College of Population Health, Thomas Jefferson University, 901 Walnut St., 10th Floor, Philadelphia, PA, 19107, USA
| | - S Del Canale
- Azienda Unità Sanitaria Locale di Parma (Local Health Authority of Parma), Parma, Italy
| | - M Lombardi
- Azienda Unità Sanitaria Locale di Parma (Local Health Authority of Parma), Parma, Italy
| | - V Maio
- Jefferson College of Population Health, Thomas Jefferson University, 901 Walnut St., 10th Floor, Philadelphia, PA, 19107, USA.
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Shafran JS, Jafari N, Casey AN, Győrffy B, Denis GV. BRD4 regulates key transcription factors that drive epithelial-mesenchymal transition in castration-resistant prostate cancer. Prostate Cancer Prostatic Dis 2021; 24:268-277. [PMID: 32690869 PMCID: PMC7855805 DOI: 10.1038/s41391-020-0246-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/04/2020] [Accepted: 06/30/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Androgen deprivation therapies for the hormone-dependent stages of prostate cancer have become so effective that new forms of chemoresistant tumors are emerging in clinical practice, and require new targeted therapies in the metastatic setting. Yet there are important gaps in our understanding of the relevant transcriptional networks driving this process. Progression from localized to metastatic castration resistant prostate cancer (mCRPC) occurs as a result of accumulated resistance mechanisms that develop upon sustained androgen receptor (AR) suppression. Critical to this progression is the plastic nature by which prostate tumor cells transition from epithelial to mesenchymal states (EMT). METHODS Here, using prostate cancer cell lines with different AR composition, we systematically manipulated somatic proteins of the Bromodomain and ExtraTerminal (BET) family (BRD2, BRD3, and BRD4) to determine which BET proteins influence EMT. We used the TCGA repository to correlate the expression of individual BET genes with key EMT genes and determined biochemical recurrence in 414 patients and progression free survival in 488 patients. RESULTS We found that only BRD4-and not BRD2 or BRD3-regulates the expression of SNAI1 and SNAI2, and that the downregulation of these EMT transcription factors significantly increases E-cadherin expression. Furthermore, of the BET genes, only BRD4 correlates with survival outcomes in prostate cancer patients. Moreover, selective degradation of BRD4 protein with MZ1 ablates EMT (transcriptionally and morphologically) induced by TGFß signaling. CONCLUSIONS Many relapsed/refractory tumors share a neuroendocrine transcriptional signature that had been relatively rare until highly successful antiandrogen drugs like abiraterone and enzalutamide came into widespread use. New therapeutic targets must therefore be developed. Our results identify key EMT genes regulated by BRD4, and offers a novel druggable target to treat mCRPC. BRD4-selective protein degraders offer a promising next generation approach to treat the emerging forms of chemoresistance in advanced prostate cancer.
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Affiliation(s)
- Jordan S Shafran
- Boston University-Boston Medical Center Cancer Center, Boston, MA, 02118, USA
- Department of Molecular and Translational Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Naser Jafari
- Boston University-Boston Medical Center Cancer Center, Boston, MA, 02118, USA
| | - Allison N Casey
- Boston University-Boston Medical Center Cancer Center, Boston, MA, 02118, USA
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Balázs Győrffy
- Department of Bioinformatics and 2nd Department of Pediatrics, Semmelweis University, Budapest, 1094, Hungary
- TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology, Budapest, 1117, Hungary
| | - Gerald V Denis
- Boston University-Boston Medical Center Cancer Center, Boston, MA, 02118, USA.
- Department of Molecular and Translational Medicine, Boston University School of Medicine, Boston, MA, 02118, USA.
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, 02118, USA.
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Lombardi FL, Jafari N, Bertrand KA, Oshry LJ, Cassidy MR, Ko NY, Denis GV. Novel semi-automated algorithm for high-throughput quantification of adipocyte size in breast adipose tissue, with applications for breast cancer microenvironment. Adipocyte 2020; 9:313-325. [PMID: 32633194 PMCID: PMC7469507 DOI: 10.1080/21623945.2020.1787582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 06/09/2020] [Accepted: 06/16/2020] [Indexed: 12/02/2022] Open
Abstract
The size distribution of adipocytes in fat tissue provides important information about metabolic status and overall health of patients. Histological measurements of biopsied adipose tissue can reveal cardiovascular and/or cancer risks, to complement typical prognosis parameters such as body mass index, hypertension or diabetes. Yet, current methods for adipocyte quantification are problematic and insufficient. Methods such as hand-tracing are tedious and time-consuming, ellipse approximation lacks precision, and fully automated methods have not proven reliable. A semi-automated method fills the gap in goal-directed computational algorithms, specifically for high-throughput adipocyte quantification. Here, we design and develop a tool, AdipoCyze, which incorporates a novel semi-automated tracing algorithm, along with benchmark methods, and use breast histological images from the Komen for the Cure Foundation to assess utility. Speed and precision of the new approach are superior to conventional methods and accuracy is comparable, suggesting a viable option to quantify adipocytes, while increasing user flexibility. This platform is the first to provide multiple methods of quantification in a single tool. Widespread laboratory and clinical use of this program may enhance productivity and performance, and yield insight into patient metabolism, which may help evaluate risks for breast cancer progression in patients with comorbidities of obesity. ABBREVIATIONS BMI: body mass index.
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Affiliation(s)
- Frank L. Lombardi
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Naser Jafari
- BU-BMC Cancer Center, Boston University School of Medicine, Boston, MA, USA
| | - Kimberly A. Bertrand
- Slone Epidemiology Center, Boston University School of Medicine, Boston, MA, USA
| | - Lauren J. Oshry
- Section of Hematology-Oncology, Boston Medical Center, Boston, MA, USA
| | | | - Naomi Y. Ko
- Section of Hematology-Oncology, Boston Medical Center, Boston, MA, USA
| | - Gerald V. Denis
- BU-BMC Cancer Center, Boston University School of Medicine, Boston, MA, USA
- Section of Hematology-Oncology, Boston Medical Center, Boston, MA, USA
- Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA
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Drury J, Rychahou PG, He D, Jafari N, Wang C, Lee EY, Weiss HL, Evers BM, Zaytseva YY. Inhibition of Fatty Acid Synthase Upregulates Expression of CD36 to Sustain Proliferation of Colorectal Cancer Cells. Front Oncol 2020; 10:1185. [PMID: 32850342 PMCID: PMC7411002 DOI: 10.3389/fonc.2020.01185] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/11/2020] [Indexed: 01/28/2023] Open
Abstract
Fatty acid synthase, a key enzyme of de novo lipogenesis, is an attractive therapeutic target in cancer. The novel fatty acid synthase inhibitor, TVB-3664, shows anti-cancer activity in multiple cancers including colorectal cancer; however, it is unclear whether uptake of exogeneous fatty acids can compensate for the effect of fatty acid synthase inhibition. This study demonstrates that inhibition of fatty acid synthase selectively upregulates fatty acid translocase (CD36), a fatty acid transporter, in multiple colorectal cancer models including colorectal cancer cells with shRNA mediated knockdown of fatty acid synthase and genetically modified mouse tissues with heterozygous and homozygous deletion of fatty acid synthase. Furthermore, human colorectal cancer tissues treated with TVB-3664 show a significant and selective upregulation of CD36 mRNA. shRNA-mediated knockdown of CD36 and inhibition of CD36 via sulfosuccinimidyl oleate, a chemical inhibitor of CD36, decreased cell proliferation in vitro and reduced tumor growth in subcutaneous xenograft models. Isogenic cell populations established from patient derived xenografts and expressing high levels of CD36 show a significantly increased ability to grow tumors in vivo. The tumor-promoting effect of CD36 is associated with an increase in the levels of pAkt and survivin. Importantly, combinatorial treatment of primary and established colorectal cancer cells with TVB-3664 and sulfosuccinimidyl oleate shows a synergistic effect on cell proliferation. In summary, our study demonstrates that upregulation of CD36 expression is a potential compensatory mechanism for fatty acid synthase inhibition and that inhibition of CD36 can improve the efficacy of fatty acid synthase-targeted therapy.
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Affiliation(s)
- James Drury
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, United States
| | - Piotr G. Rychahou
- Markey Cancer Center, University of Kentucky, Lexington, KY, United States,Department of Surgery, University of Kentucky, Lexington, KY, United States
| | - Daheng He
- Markey Cancer Center, University of Kentucky, Lexington, KY, United States
| | - Naser Jafari
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, United States
| | - Chi Wang
- Markey Cancer Center, University of Kentucky, Lexington, KY, United States
| | - Eun Y. Lee
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, KY, United States
| | - Heidi L. Weiss
- Markey Cancer Center, University of Kentucky, Lexington, KY, United States
| | - Bernard Mark Evers
- Markey Cancer Center, University of Kentucky, Lexington, KY, United States,Department of Surgery, University of Kentucky, Lexington, KY, United States
| | - Yekaterina Y. Zaytseva
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, United States,Markey Cancer Center, University of Kentucky, Lexington, KY, United States,*Correspondence: Yekaterina Y. Zaytseva
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Abdolahnejad A, Gheisari L, Karimi M, Norastehfar N, Ebrahimpour K, Mohammadi A, Ghanbari R, Ebrahimi A, Jafari N. Monitoring and health risk assessment of phthalate esters in household’s drinking water of Isfahan, Iran. Int J Environ Sci Technol 2019; 16:7409-7416. [DOI: 10.1007/s13762-018-2143-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 11/25/2018] [Accepted: 11/26/2018] [Indexed: 06/15/2023]
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Jafari N, Zargar SJ, Delnavazi MR, Yassa N. Cell Cycle Arrest and Apoptosis Induction of Phloroacetophenone Glycosides and Caffeoylquinic Acid Derivatives in Gastric Adenocarcinoma (AGS) Cells. Anticancer Agents Med Chem 2019; 18:610-616. [PMID: 29256356 DOI: 10.2174/1871520618666171219121449] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/23/2017] [Accepted: 12/06/2017] [Indexed: 11/22/2022]
Abstract
INTRODUCTION In the present study, we analyzed anti-proliferative and apoptosis induction activity of five phenolic compounds: echisoside, pleoside, chlorogenic acid, 4,5-Di-O-caffeoylquinic acid, and cynarin on AGS (adenocarcinoma gastric) cell line. METHOD These phenolic compounds were isolated from methanol extract of Dorema glabrum root. An MTT assay was conducted to evaluate the inhibitory effect on cancer cells. EB/AO staining was done to assess the mode of cell death and morphological changes of the cells' nuclei. Cell cycle distribution of the cells was analyzed by flow cytometry, and for further confirmation of the pathway, mRNA levels of apoptosis cascade players were quantified by qRT-PCR. RESULT We found that echisoside, pleoside, chlorogenic acid, 4,5-Di-O-caffeoylquinic acid, and cynarin inhibited the proliferation of AGS cancer cells in vitro. Our data revealed that these compounds triggered morphological changes characteristic of apoptotic cell death. These compounds up-regulated bax and caspase3 expression and down-regulated cyclin D1, bcl2, VEGFA, c-myc and survivin. Moreover, cell population increased at the G1 phase, and a number of cells at the G2/M phase of the cell cycle decreased after treatment. CONCLUSION All these data suggest that phenolic compounds have a cytotoxic effect on gastric cancer cells and could trigger apoptosis. Besides cytotoxic activity, they could potentially arrest the cell cycle at the G1 phase.
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Affiliation(s)
- Naser Jafari
- Department of Cell & Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Seyed Jalal Zargar
- Department of Cell & Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Mohammad-Reza Delnavazi
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Narguess Yassa
- Department of Pharmacognosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Jafari N, Drury J, Morris AJ, Onono FO, Stevens PD, Gao T, Liu J, Wang C, Lee EY, Weiss HL, Evers BM, Zaytseva YY. De Novo Fatty Acid Synthesis-Driven Sphingolipid Metabolism Promotes Metastatic Potential of Colorectal Cancer. Mol Cancer Res 2019; 17:140-152. [PMID: 30154249 PMCID: PMC6318071 DOI: 10.1158/1541-7786.mcr-18-0199] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 06/01/2018] [Accepted: 08/17/2018] [Indexed: 01/28/2023]
Abstract
Metastasis is the most common cause of death in colorectal cancer patients. Fatty acid synthase (FASN) and sphingosine kinase-1 and -2 (SPHK1 and 2) are overexpressed in many cancers, including colorectal cancer. However, the contribution of FASN-mediated upregulation of sphingolipid metabolism to colorectal cancer metastasis and the potential of these pathways as targets for therapeutic intervention remain unknown. This study determined that sphingosine kinases (SPHK) are overexpressed in colorectal cancer as compared with normal mucosa. FASN expression significantly correlated with SPHK2 expression in data sets from The Cancer Genome Atlas (TCGA) and a colorectal cancer tumor microarray. FASN, SPHK1, and SPHK2 colocalized within invadopodia of primary colorectal cancer cells. Moreover, FASN inhibition decreased SPHK2 expression and the levels of dihydrosphingosine 1-phosphate (DH-S1P) and sphingosine 1-phosphate (S1P) in colorectal cancer cells and tumor tissues. Inhibition of FASN using TVB-3664 and sphingolipid metabolism using FTY-720 significantly inhibited the ability of primary colorectal cancer cells to proliferate, migrate, form focal adhesions, and degrade gelatin. Inhibition of the FASN/SPHK/S1P axis was accompanied by decreased activation of p-MET, p-FAK, and p-PAX. S1P treatment rescued FASN-mediated inhibition of these proteins, suggesting that FASN promotes metastatic properties of colorectal cancer cells, in part, through an increased sphingolipid metabolism. These data demonstrate that upregulation of the FASN/SPHK/S1P axis promotes colorectal cancer progression by enhancing proliferation, adhesion, and migration. IMPLICATIONS: This study provides a strong rationale for further investigation of the interconnection of de novo lipogenesis and sphingolipid metabolism that could potentially lead to the identification of new therapeutic targets and strategies for colorectal cancer.
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Affiliation(s)
- Naser Jafari
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky, USA,Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - James Drury
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky, USA
| | - Andrew J. Morris
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA,Division of Cardiovascular Medicine and The Gill Heart and Vascular Institute, University of Kentucky, Lexington, Kentucky, USA
| | - Fredrick O. Onono
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA,Division of Cardiovascular Medicine and The Gill Heart and Vascular Institute, University of Kentucky, Lexington, Kentucky, USA
| | - Payton D. Stevens
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, USA
| | - Tianyan Gao
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA,Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, USA
| | - Jinpeng Liu
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Chi Wang
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Eun Y. Lee
- Department of Pathology and Laboratory Medicine, University of Kentucky, Lexington, Kentucky, USA
| | - Heidi L. Weiss
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - B. Mark Evers
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Yekaterina Y. Zaytseva
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky, USA,Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
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14
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Li L, Kołodziej T, Jafari N, Chen J, Zhu H, Rajfur Z, Huang C. Cdk5-mediated phosphorylation regulates phosphatidylinositol 4-phosphate 5-kinase type I γ 90 activity and cell invasion. FASEB J 2018; 33:631-642. [PMID: 30040488 DOI: 10.1096/fj.201800296r] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Phosphatidylinositol 4-phosphate 5-kinase type I γ (PIPKIγ90) regulates cell migration, invasion, and metastasis. However, it is unknown how cellular signals regulate those processes. Here, we show that cyclin-dependent kinase 5 (Cdk5), a protein kinase that regulates cell migration and invasion, phosphorylates PIPKIγ90 at S453, and that Cdk5-mediated PIPKIγ90 phosphorylation is essential for cell invasion. Moreover, Cdk5-mediated phosphorylation down-regulates the activity of PIPKIγ90 and the secretion of fibronectin, an extracellular matrix protein that regulates cell migration and invasion. Furthermore, inhibition of PIPKIγ activity with the chemical inhibitor UNC3230 suppresses fibronectin secretion in a dose-dependent manner, whereas depletion of Cdk5 enhances fibronectin secretion. With total internal reflection fluorescence microscopy, we found that secreted fibronectin appears as round dots, which colocalize with Tks5 and CD9 but not with Zyxin. These data suggest that Cdk5-mediated PIPKIγ90 phosphorylation regulates cell invasion by controlling PIPKIγ90 activity and fibronectin secretion.-Li, L., Kołodziej, T., Jafari, N., Chen, J., Zhu, H., Rajfur, Z., Huang, C. Cdk5-mediated phosphorylation regulates phosphatidylinositol 4-phosphate 5-kinase type I γ 90 activity and cell invasion.
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Affiliation(s)
- Liqing Li
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Tomasz Kołodziej
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA.,Faculty of Physics, Astronomy, and Applied Computer Science, Institute of Physics, Jagiellonian University, Krakow, Poland
| | - Naser Jafari
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Jing Chen
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, USA; and
| | - Haining Zhu
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, USA; and
| | - Zenon Rajfur
- Faculty of Physics, Astronomy, and Applied Computer Science, Institute of Physics, Jagiellonian University, Krakow, Poland
| | - Cai Huang
- Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA.,Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, Kentucky, USA
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15
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Jafari N, Drury J, Morris AJ, Onono FO, Stevens PD, Gao T, Lee EY, Weiss HL, Evers BM, Zaytseva Y. Abstract 1437: De novo fatty acid synthesis-driven sphingolipid metabolism promotes metastatic potential of colorectal cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-1437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Colorectal cancer (CRC) is the second leading cause of cancer-related deaths in the USA. Development of metastasis is the most common cause of death in these patients. Fatty acid synthase (FASN) and Sphingosine Kinases 1 and 2 (SPHK1 and 2) are overexpressed in many cancers, including CRC. However, the contribution of FASN-mediated upregulation of sphingolipid metabolism to CRC metastasis and potential of these pathways as targets for therapeutic intervention remains unknown. The purpose of this study was to determine (i) expression of FASN, SPHK1 and SPHK2 in human CRC tissues, (ii) the effect of upregulation of FASN on sphingolipid metabolism and (iii) functional significance of the FASN/SPHK axis in advanced CRC.
Methods: Expression of FASN, SPHK1 and SPHK2 was assessed in a CRC tumor microarray (matched normal colon and tumor; 56 cases) by immunohistochemistry. Sphingolipids were measured by mass spectrometry. Primary CRC cells were established from CRC patient-derived xenograft (PDX) tumors and treated with TVB-3664, a novel FASN inhibitor, or FTY-720, an S1P mimetic that inhibits SPHKs and S1P receptors. Cellular proliferation was measured using a cell counter. Migration capabilities of cells were assessed by live cell imaging using Nikon BioStation. Invadopodia and focal adhesions were assessed by total internal reflection fluorescence microscopy. Tumor tissues were implanted into 6 to 8-week-old NOD scid gamma mice to establish PDX models. Expression of proteins involved in adhesion, migration and invasion were assessed by western blot.
Results: SPHK1 and SPHK2 were overexpressed in CRC as compared to normal mucosa and expression of FASN correlates with expression of SPHK2 (Spearman's r=0.27894, p=0.0374). Furthermore, FASN and SPHKs co-localized within invadopodia of primary CRC cells. Moreover, FASN inhibition decreased expression of SPHK2 and the level of Sphingosine-1-phosphate (S1P) in primary and established CRC cells. Inhibition of de novo lipogenesis using TVB-3664 or FTY-720 significantly inhibited proliferation, migration, focal adhesion formation and gelatin degradation ability of primary CRC cells. Inhibition of the FASN/SPHK/S1P axis was accompanied by a decrease in activation of p-MET, p-FAK, and p-Paxilin in vitro and in vivo. S1P treatment rescued FASN-mediated inhibition of these proteins suggesting that FASN promotes metastatic properties of CRC cells, in part, through an increase in sphingolipid metabolism.
Conclusion: Upregulation of the FASN/SPHK/S1P axis promotes CRC progression by enhancing cellular proliferation, adhesion and migration. Therefore, this study provides a strong rationale for further investigation of the interconnection of de novo lipogenesis and sphingolipid metabolism that would potentially lead to identification of new therapeutic targets and strategies for CRC.
Citation Format: Naser Jafari, James Drury, Andrew J. Morris, Fredrick O. Onono, Payton D. Stevens, Tianyan Gao, Eun Y. Lee, Heidi L. Weiss, B Mark Evers, Yekaterina Zaytseva. De novo fatty acid synthesis-driven sphingolipid metabolism promotes metastatic potential of colorectal cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 1437.
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Drury JM, Jafari N, Evers BM, Zaytseva YY. Abstract 1443: Overexpression of CD36 promotes tumorigenesis in colorectal cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-1443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Fatty acid translocase (CD36), a multifunctional glycoprotein, has an important role in fatty acid metabolism as a fatty acid receptor and transporter. The presence of CD36 positive metastasis-initiating cells correlates with a poorer prognosis in glioblastoma and oral carcinoma. Fatty acid synthase (FASN), a critical enzyme involved in de novo lipogenesis, is upregulated and associated with poorer prognosis in many cancers including colorectal cancer (CRC). The role of CD36 in primary and metastatic CRC as well as its relation to de novo fatty acid synthesis is not understood. The purpose of our study was: (i) to determine the role of CD36 in primary and metastatic CRC, and (ii) to delineate the association of CD36 expression with FASN as a possible mechanism of resistance to FASN inhibition.
METHODS. Expression of CD36 and FASN was assessed in a CRC tumor microarray (matched normal colon and primary tumor; 56 cases) as well as matched normal colon, primary and metastatic tumors (liver [n=12] and lung metastasis [n=5]) by immunohistochemistry. CD36 expression was analyzed in control and FASN shRNA knockout CRC cells and tissues from APC/FASN/CRE mouse models by western blot. Cell proliferation was assessed in primary CRC cells established from patient derived xenografts (PDX) treated in combination with Sulfo-N-succinimidyl oleate (SSO), an irreversible inhibitor of CD36, and FASN inhibitor TVB-3664. CD36 expression levels in primary and metastatic PDX derived CRC cells were analyzed via western blot and immunofluorescence imaging.
RESULTS. CD36 is overexpressed in primary tumors as compared to normal colon mucosa and its expression positively correlates with expression of FASN. Cell proliferation was significantly reduced when CD36 was inhibited by SSO and a further reduction in cell proliferation was observed when SSO treatment was combined with TVB-3664. Treatment with SSO induced apoptotic markers such as cleaved capspase-3 and decreased survivin. Western blot analysis of primary and metastatic CRC cells showed an upregulation of CD36 expression in the metastatic CRC cells. Additionally, FASN shRNA knockdown of FASN in CRC cells and Cre recombinase-mediated intestinal deletion of FASN in an APC/FASN/CRE mouse model led to an induction of CD36 expression. Immunofluorescence imaging of primary CRC treated with TVB-3664 showed an upregulation of membrane bound CD36.
CONCLUSION. CD36 upregulation is associated with CRC progression and inhibition of CD36 decreases proliferation and survival of primary CRC cells. Correlation between expression of CD36 and FASN suggests an interconnection between CD36 and de novo lipid synthesis. Furthermore, a decrease in FASN expression is associated with an induction of CD36, suggesting a possible mechanism of resistance to FASN inhibition. Better understanding the role of CD36 may provide new therapeutic approaches for treatment of CRC patients.
Citation Format: James M. Drury, Naser Jafari, B Mark Evers, Yekaterina Y. Zaytseva. Overexpression of CD36 promotes tumorigenesis in colorectal cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 1443.
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17
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Li L, Li X, Qi L, Rychahou P, Jafari N, Huang C. The role of talin2 in breast cancer tumorigenesis and metastasis. Oncotarget 2017; 8:106876-106887. [PMID: 29290996 PMCID: PMC5739781 DOI: 10.18632/oncotarget.22449] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 10/25/2017] [Indexed: 12/19/2022] Open
Abstract
Recent studies show that talin2 has a higher affinity to β-integrin tails and is indispensable for traction force generation and cell invasion. However, its roles in cell migration, cancer cell metastasis and tumorigenesis remain to be determined. Here, we used MDA-MB-231 human breast cancer cells as a model to define the roles of talin2 in cell migration, invasion, metastasis and tumorigenesis. We show here that talin2 knockdown (KD) inhibited cell migration and focal adhesion dynamics, a key step in cell migration, and that talin2 knockout (KO) inhibited cell invasion and traction force generation, the latter is crucial for cell invasion. Re-expression of talin2WT in talin2-KO cells restored traction force generation and cell invasion, but that of talin2S339C, a β-integrin-binding deficient mutant, did not. Moreover, talin2 KO (or KD) suppressed tumorigenesis and metastasis in mouse xenograft models. However, surprisingly, re-expression of talin2WT in talin2-KO cells did not rescue tumorigenesis. Thus, talin2 is required for breast cancer cell migration, invasion, metastasis and tumorigenesis, although exogenous expression of high levels of talin2 could inhibit tumorigenesis.
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Affiliation(s)
- Liqing Li
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
| | - Xiang Li
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
| | - Lei Qi
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
| | - Piotr Rychahou
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
| | - Naser Jafari
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
| | - Cai Huang
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA.,Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40506, USA
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18
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Qi L, Jafari N, Li X, Chen Z, Li L, Hytönen VP, Goult BT, Zhan CG, Huang C. Talin2-mediated traction force drives matrix degradation and cell invasion. J Cell Sci 2017; 129:3661-3674. [PMID: 27694340 DOI: 10.1242/jcs.185959] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 08/18/2016] [Indexed: 12/19/2022] Open
Abstract
Talin binds to β-integrin tails to activate integrins, regulating cell migration, invasion and metastasis. There are two talin genes, TLN1 and TLN2, encoding talin1 and talin2, respectively. Talin1 regulates focal adhesion dynamics, cell migration and invasion, whereas the biological function of talin2 is not clear and, indeed, talin2 has been presumed to function redundantly with talin1. Here, we show that talin2 has a much stronger binding to β-integrin tails than talin1. Replacement of talin2 Ser339 with Cys significantly decreased its binding to β1-integrin tails to a level comparable to that of talin1. Talin2 localizes at invadopodia and is indispensable for the generation of traction force and invadopodium-mediated matrix degradation. Ablation of talin2 suppressed traction force generation and invadopodia formation, which were restored by re-expressing talin2 but not talin1. Furthermore, re-expression of wild-type talin2 (but not talin2S339C) in talin2-depleted cells rescued development of traction force and invadopodia. These results suggest that a strong interaction of talin2 with integrins is required to generate traction, which in turn drives invadopodium-mediated matrix degradation, which is key to cancer cell invasion.
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Affiliation(s)
- Lei Qi
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA Veterans Affairs Medical Center, Lexington, KY 40502, USA
| | - Naser Jafari
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA Veterans Affairs Medical Center, Lexington, KY 40502, USA
| | - Xiang Li
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
| | - Zaozao Chen
- Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Liqing Li
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA
| | - Vesa P Hytönen
- BioMediTech, University of Tampere, 33520 Tampere, Finland and Fimlab Laboratories, Tampere 33520, Finland
| | - Benjamin T Goult
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK
| | - Chang-Guo Zhan
- Molecular Modeling and Biopharmaceutical Center, College of Pharmacy, University of Kentucky, Lexington, KY 40506, USA
| | - Cai Huang
- Markey Cancer Center, University of Kentucky, Lexington, KY 40506, USA Veterans Affairs Medical Center, Lexington, KY 40502, USA Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40506, USA
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Abstract
AbstractIn this paper, the effect of boron dilution transient, as a consequence of the malfunction of the boron control system, was investigated in a VVER-1000 reactor, and then an appropriate setpoint was determined for the actuation of the emergency protection system to the reactor shutdown. In order to simulate the boron dilution, first, the whole reactor core was simulated by MCNPX code to compute the radial and axial power distribution. Then, the COBRA-EN code was employed using calculated power distribution for analyzing the thermal-hydraulic of hot fuel assembly and for extracting the safety parameters. For the safe operation of the reactor, certain parameters must be in defined specified ranges. Comparison between our results and FSARs data shows that the present modeling provides a good prediction of boron dilution transient with the maximum relative difference about 4%.
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Affiliation(s)
- N. Jafari
- 1Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran Polytechnic, 424 Hafez Avenue, P.O. Box 15875–4413 Tehran, Iran
| | - S. Talebi
- 2PhD student at AmirKabir University, Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran Polytechnic, 424 Hafez Avenue, Tehran, Iran, E-mail:
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20
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Alibeiki F, Jafari N, Karimi M, Peeri Dogaheh H. Potent anti-cancer effects of less polar Curcumin analogues on gastric adenocarcinoma and esophageal squamous cell carcinoma cells. Sci Rep 2017; 7:2559. [PMID: 28566729 PMCID: PMC5451386 DOI: 10.1038/s41598-017-02666-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 04/11/2017] [Indexed: 12/05/2022] Open
Abstract
Curcumin and its chalcone derivatives inhibit the growth of human cancer cells. It is reported that replacement of two OH groups in curcumin with less polar groups like methoxy increases its anti-proliferative activity. In this study, we explored benzylidine cyclohexanone derivatives with non-polar groups, to see if they possess increased anti-cancer activity. Novel 2,6-bis benzylidine cyclohexanone analogues of curcumin were synthesized, and their inhibitory effects on gastric adenocarcinoma (AGS) and esophageal squamous cell carcinoma (KYSE30) cancer cells were studied using an MTT assay. Cell apoptosis was detected by EB/AO staining, and cell cycle was analyzed by flow cytometry. Real-time PCR was performed for gene expression analysis. All synthesized analogues were cytotoxic toward gastric and esophageal cancer cells and showed lower IC50 values than curcumin. Treatment with 2,6-Bis-(3-methoxy-4-propoxy-benzylidene)-cyclohexanone (BM2) was 17 times more toxic than curcumin after 48 h incubation. All novel compounds were more effective than curcumin in apoptosis induction and cell cycle arrest at G1 phase. These results suggest that less polar analogues of curcumin have potent cytotoxicity in vitro. However, they need to be investigated further, especially with animal tumor models, to confirm their chemotherapeutic activity in vivo.
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Affiliation(s)
- Fatemeh Alibeiki
- School of Medicine, Ardabil University of Medical Science, Ardabil, 56197, Iran
| | - Naser Jafari
- School of Medicine, Ardabil University of Medical Science, Ardabil, 56197, Iran. .,Markey Cancer Center, University of Kentucky, Lexington, KY, USA.
| | - Maryam Karimi
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Science, Tehran, 14176, Iran
| | - Hadi Peeri Dogaheh
- School of Medicine, Ardabil University of Medical Science, Ardabil, 56197, Iran
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21
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Jeddian A, Lindenmeyer A, Marshall T, Howard A, Sayadi L, Rashidian A, Jafari N. Implementation of a critical care outreach service: a qualitative study. Int Nurs Rev 2017; 64:353-362. [DOI: 10.1111/inr.12377] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- A. Jeddian
- Digestive Disease Research Institute; Tehran University of Medical Sciences; Tehran Iran
| | - A. Lindenmeyer
- Qualitative Methods; Institute of Applied Health Research; University of Birmingham; Birmingham UK
| | - T. Marshall
- Public Health & Primary Care; Institute of Applied Health Research; University of Birmingham; Birmingham UK
| | - A.F. Howard
- School of Nursing; The University of British Columbia; Vancouver BC Canada
| | - L. Sayadi
- School of Nursing and Midwifery; Nursing & Midwifery Care Research Center Tehran University of Medical Sciences; Tehran Iran
| | - A. Rashidian
- School of Public Health; Tehran University of Medical Sciences; Tehran Iran
| | - N. Jafari
- Digestive Disease Research Institute; Tehran University of Medical Sciences; Tehran Iran
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22
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Mohammadzadeh A, Towfighi F, Jafari N. Effect of magnesium on arrhythmia incidence in patients undergoing coronary artery bypass grafting. ANZ J Surg 2017; 88:612-615. [PMID: 28544600 DOI: 10.1111/ans.14056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 02/13/2017] [Accepted: 04/05/2017] [Indexed: 01/27/2023]
Abstract
BACKGROUND Cardiac arrhythmia after coronary artery bypass grafting (CABG) surgery is a common complication of cardiac surgery. The effect of serum magnesium, hypomagnesaemia treatment and prophylactic administration of magnesium in the development and prevention of arrhythmias is controversial and there are many different ideas. This study evaluates the therapeutic effects of magnesium in cardiac arrhythmia after CABG surgery. METHODS The clinical trial enrolled 250 patients who underwent CABG. Based on the initial serum levels of magnesium, patients were divided into two groups: hypomagnesium and normomagnesium. Based on bioethics committee requirements, patients in the hypo-magnesium group received magnesium treatments until they attained normal magnesium blood levels. Both groups underwent CABG with normal blood levels of magnesium. After surgery, each group was randomly divided into two subgroups: one subgroup received a bolus dose of magnesium sulphate (30 mg/kg in 5 min) and the other subgroup received a placebo. Subgroups were under observation in the intensive care unit for 3 days and arrhythmias were recorded. Data from all four subgroups were analysed statistically and interpreted. RESULTS The results of this study showed that the occurrence of arrhythmia was not significantly different among subgroups (P > 0.05). There was no significant relationship between blood levels of magnesium and arrhythmia during the 3 days post-surgery (P > 0.05). CONCLUSION The results of this study showed that magnesium sulphate administration did not significantly improve the incidence of arrhythmias in hypo- and normo-magnesium patients after CABG. There was no significant correlation between post-operative serum levels of magnesium and arrhythmia during 3 days.
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Affiliation(s)
- Alireza Mohammadzadeh
- Department of Cardiothoracic, Imam Khomeini Hospital, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Farshad Towfighi
- Department of Cardiothoracic, Imam Khomeini Hospital, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Naser Jafari
- Department of Cardiothoracic, Imam Khomeini Hospital, Ardabil University of Medical Sciences, Ardabil, Iran
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23
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Rostami Mogaddam M, Safavi Ardabili N, Shafaeei Y, Maleki N, Jafari N, Jafari A. Overexpression of Drosha, DiGeorge syndrome critical region gene 8 (DGCR8), and Dicer mRNAs in the pathogenesis of psoriasis. J Cosmet Dermatol 2017; 16:e48-e53. [DOI: 10.1111/jocd.12336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2017] [Indexed: 01/05/2023]
Affiliation(s)
- Majid Rostami Mogaddam
- Department of Dermatology; Imam Khomeini Hospital; Ardebil University of Medical Sciences; Ardabil Iran
| | | | - Yousef Shafaeei
- Department of Surgery; Imam Khomeini Hospital; Ardebil University of Medical Sciences; Ardebil Iran
| | - Nasrollah Maleki
- Department of Endocrine and Metabolic Diseases; The Persian Gulf Tropical Medicine Research Center; Bushehr University of Medical Sciences; Bushehr Iran
| | - Naser Jafari
- Markey Cancer Center; University of Kentucky; Lexington USA
| | - Alireza Jafari
- Department of Dermatology; Imam Khomeini Hospital; Ardebil University of Medical Sciences; Ardabil Iran
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Jafari N, Zargar SJ, Yassa N, Delnavazi MR. Induction of Apoptosis and Cell Cycle Arrest by Dorema Glabrum Root Extracts in a Gastric Adenocarcinoma (AGS) Cell Line. Asian Pac J Cancer Prev 2016; 17:5189-5193. [PMID: 28124886 PMCID: PMC5454657 DOI: 10.22034/apjcp.2016.17.12.5189] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Objective: Dorema glabrum Fisch. & C.A. Mey is a perennial plant that has several curative properties. Anti-proliferative activity of seeds of this plant has been demonstrated in a mouse fibrosarcoma cell line. The aim of the present study was to evaluate cytotoxicity of D. glabrum root extracts in a human gastric adenocarcinoma (AGS) cell line and explore mechanisms of apoptosis induction, cell cycle arrest and altered gene expression in cancer cells. Materials and Methods: The MTT assay was used to evaluate IC50 values, EB/AO staining to analyze the mode of cell death, and flow cytometry to assess the cell cycle. Quantitative real-time polymerase chain reaction (qRT-PCR) amplification was performed with apoptosis and cell cycle-related gene primers, for cyclin D1, c-myc, survivin, VEGF, Bcl-2, Bax, and caspase-3 to determine alteration of gene expression. Results: Our results showed that n-hexane and chloroform extracts had greatest toxic effects on gastric cancer cells with IC50 values of 6.4 µg/ml and 4.6 µg/ml, respectively, after 72 h. Cell cycle analysis revealed that the population of treated cells in the G1 phase was increased in comparison to controls. Cellular morphological changes indicated induction of apoptosis. In addition, mRNA expression levels of Bax and caspase-3 were increased, and of bcl-2 survivin, VEGF, c-myc and cyclin D1 were decreased. Conclusion: Our study results suggest that D. glabrum has cytotoxic effects on AGS cells, characterized by enhanced apoptosis, reduced cell viability and arrest of cell cycling.
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Jafari N, Zheng Q, Li L, Li W, Qi L, Xiao J, Gao T, Huang C. p70S6K1 (S6K1)-mediated Phosphorylation Regulates Phosphatidylinositol 4-Phosphate 5-Kinase Type I γ Degradation and Cell Invasion. J Biol Chem 2016; 291:25729-25741. [PMID: 27780861 DOI: 10.1074/jbc.m116.742742] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 10/22/2016] [Indexed: 11/06/2022] Open
Abstract
Phosphatidylinositol 4-phosphate 5-kinase type I γ (PIPKIγ90) ubiquitination and subsequent degradation regulate focal adhesion assembly, cell migration, and invasion. However, it is unknown how upstream signals control PIPKIγ90 ubiquitination or degradation. Here we show that p70S6K1 (S6K1), a downstream target of mechanistic target of rapamycin (mTOR), phosphorylates PIPKIγ90 at Thr-553 and Ser-555 and that S6K1-mediated PIPKIγ90 phosphorylation is essential for cell migration and invasion. Moreover, PIPKIγ90 phosphorylation is required for the development of focal adhesions and invadopodia, key machineries for cell migration and invasion. Surprisingly, substitution of Thr-553 and Ser-555 with Ala promoted PIPKIγ90 ubiquitination but enhanced the stability of PIPKIγ90, and depletion of S6K1 also enhanced the stability of PIPKIγ90, indicating that PIPKIγ90 ubiquitination alone is insufficient for its degradation. These data suggest that S6K1-mediated PIPKIγ90 phosphorylation regulates cell migration and invasion by controlling PIPKIγ90 degradation.
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Affiliation(s)
- Naser Jafari
- From the Markey Cancer Center and.,the Veterans Affairs Medical Center, Lexington, Kentucky 40502
| | | | | | - Wei Li
- From the Markey Cancer Center and
| | - Lei Qi
- From the Markey Cancer Center and
| | | | | | - Cai Huang
- From the Markey Cancer Center and .,the Veterans Affairs Medical Center, Lexington, Kentucky 40502.,the Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, Kentucky 40506 and
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Aslani S, Jafari N, Javan MR, Karami J, Ahmadi M, Jafarnejad M. Epigenetic Modifications and Therapy in Multiple Sclerosis. Neuromolecular Med 2016; 19:11-23. [PMID: 27382982 DOI: 10.1007/s12017-016-8422-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 06/30/2016] [Indexed: 01/03/2023]
Abstract
Breakthroughs in genetic studies, like whole human genome sequencing and genome-wide association studies (GWAS), have richened our knowledge of etiopathology of autoimmune diseases (AID) through discovery of genetic patterns. Nonetheless, the precise etiology of autoimmune diseases remains largely unknown. The lack of complete concordance of autoimmune disease in identical twins suggests that non-genetic factors also play a major role in determining disease susceptibility. Although there is no certain definition, epigenetics has been known as heritable alterations in gene function without changes in the nucleotide sequence. DNA methylation, histone modifications, and microRNA-associated gene expression suppression are the central mechanisms for epigenetic regulations. Multiple sclerosis (MS) is a disorder of the central nervous system (CNS), characterized by both inflammatory and neurodegenerative features. Although studies on epigenetic alterations in MS only began in the past decade, a mounting number of surveys suggest that epigenetic changes may be involved in the initiation and development of MS, probably through bridging the effects of environmental risk factors to genetics. Arming with clear understanding of epigenetic dysregulations underpins development of epigenetic therapies. Identifying agents inhibiting the enzymes controlling epigenetic modifications, particularly DNA methyltransferases and histone deacetylases, will be promising therapeutic tool toward MS. In the article underway, it is aimed to go through the recent progresses, attempting to disclose how epigenetics associates with the pathogenesis of MS and how can be used as therapeutic approach.
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Affiliation(s)
- Saeed Aslani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Naser Jafari
- Markey Cancer Center, University of Kentucky, 741 South Limestone St. Biomedical Biological Research Building (BBSRB), 378D, Lexington, KY, 40506, USA.
| | - Mohammad Reza Javan
- Department of Immunology, Faculty of Medicine, Zabol University of Medical Sciences, Zabol, Iran
| | - Jafar Karami
- Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Ahmadi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahmoud Jafarnejad
- Department of Pharmacology, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
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Abstract
MicroRNAs (miRNAs) have been shown to play important roles in diverse cellular processes and linked to variety of disorders. Dicer and Drosha are two major enzymes in the miRNA biogenesis process. DGCR8 is the assistant of Drosha in the microprocessor complex. In this study, we evaluated the mRNA expression profiles of major miRNA processing machinery Drosha, Dicer, and DGCR8 in gestational diabetes mellitus (GDM), pregnant and healthy women. Our findings indicate that the expression levels of Drosha, Dicer and DGCR8 were upregulated in both pregnant and GDM patients compared to the control group. However, Drosha and Dicer were upregulated more than pregnant group. In conclusion, we detected dysregulation of Drosha, Dicer and DGCR8 expression in pregnant and GDM patients when compared to healthy control participants. Therefore, we favor the hypothesis that miRNAs are involved in the development of GDM.
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Jafari N, Shaghaghi H, Mahmoodi D, Shirzad Z, Alibeiki F, Bohlooli S, Dogaheh HP. Overexpression of microRNA biogenesis machinery: Drosha, DGCR8 and Dicer in multiple sclerosis patients. J Clin Neurosci 2014; 22:200-3. [PMID: 25439752 DOI: 10.1016/j.jocn.2014.06.106] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 06/08/2014] [Accepted: 06/15/2014] [Indexed: 01/15/2023]
Abstract
We aimed to evaluate the expression of the major components of microRNA biogenesis machinery including Drosha, Dicer and DiGeorge syndrome critical region gene 8 (DGCR8) in multiple sclerosis (MS) patients. The expression levels of these components in relapsing remitting multiple sclerosis (RRMS) patients were significantly up-regulated in comparison to healthy controls. DGCR8 was up-regulated 4.9 times in RRMS patients versus healthy controls, and Drosha was up-regulated 3.58 times. Additionally, the expression level of Dicer was 2.11 times higher in RRMS patients than the healthy controls. In conclusion, our results suggest that overexpression of Drosha, Dicer and DGCR8 may contribute to the pathogenesis of MS. Further investigation may introduce microRNA biogenesis machinery as MS markers and therapeutic targets.
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Affiliation(s)
- Naser Jafari
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran; Department of Cell & Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Hassan Shaghaghi
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - Davood Mahmoodi
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - Zohreh Shirzad
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - Fatemeh Alibeiki
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - Shahab Bohlooli
- Department of Pharmacology, School of Pharmacy, Ardabil University of Medical Science, Ardabil, Iran
| | - Hadi Peeri Dogaheh
- Department of Microbiology, School of Medicine, Ardabil University of Medical Science, Daneshgah Street, Ardabil 55136, Iran.
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Zendehdel M, Mobinikhaledi A, Alikhani H, Jafari N. Preparation of Heteropoly Acid/Porous Hybrid Materials and Investigation of their Catalytic Behavior in the Synthesis of Perimidine. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201000095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Mohammadzadeh A, Jafari N, Hasanpour M, Sahandifar S, Ghafari M, Alaei V. Effects of pulsatile perfusion during cardiopulmonary bypass on biochemical markers and kidney function in patients undergoing cardiac surgeries. Am J Cardiovasc Dis 2013; 3:158-162. [PMID: 23991350 PMCID: PMC3751681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 08/02/2013] [Indexed: 06/02/2023]
Abstract
For several years there is no conclusive guideline on the effectiveness of pulsatile or non-pulsatile perfusion during cardiopulmonary bypass (CPB) in patients undergoing cardiac surgeries. In this study, we evaluated the effect of pulsatile versus continuous perfusion on the myocardial release of the cardiac biochemical markers including, creatine phosphokinase (CPK), cardiac creatine kinase (CK-MB), and lactate dehydrogenase (LDH), and also kidney function tests including: blood urea nitrogen test (BUN) and creatinine test (Cr) in patients that underwent both pulsatile and non-pulsatile methods before and after heart surgeries. A total of 80 patients were enrolled in this study, 40 patients in each pulsatile and non-pulsatile group. Venous blood samples were drown from each patient in two groups before operation and after operation at, 24, 48, and 72 h and analyzed separately for CPK, its cardiac isoenzyme (CK-MB), LDH, BUN and Cr. There were no significant differences between the two groups with regard to preoperative parameters such as sex, age, and body surface area. Our study shows that the effect of pulsatile perfusion on cardiac and kidney function is better than the non-pulsatile method.
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Affiliation(s)
- Alireza Mohammadzadeh
- Department of Cardiothoracic, Imam Khomeini Hospital, Ardabil University of Medical Sciences Ardabil 56197, Iran
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Runia TF, Jafari N, Hintzen RQ. Application of the 2010 revised criteria for the diagnosis of multiple sclerosis to patients with clinically isolated syndromes. Eur J Neurol 2013; 20:1510-6. [DOI: 10.1111/ene.12243] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 07/01/2013] [Indexed: 11/26/2022]
Affiliation(s)
- T. F. Runia
- Department of Neurology; Erasmus MC University Hospital Rotterdam; Rotterdam The Netherlands
| | - N. Jafari
- Department of Neurology; Erasmus MC University Hospital Rotterdam; Rotterdam The Netherlands
| | - R. Q. Hintzen
- Department of Neurology; Erasmus MC University Hospital Rotterdam; Rotterdam The Netherlands
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Zheng X, Naiditch J, Czurylo M, Jie C, Lautz T, Clark S, Jafari N, Qiu Y, Chu F, Madonna MB. Differential effect of long-term drug selection with doxorubicin and vorinostat on neuroblastoma cells with cancer stem cell characteristics. Cell Death Dis 2013; 4:e740. [PMID: 23887631 PMCID: PMC3730434 DOI: 10.1038/cddis.2013.264] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/08/2013] [Accepted: 06/11/2013] [Indexed: 12/11/2022]
Abstract
Numerous studies have confirmed that cancer stem cells (CSCs) are more resistant to chemotherapy; however, there is a paucity of data exploring the effect of long-term drug treatment on the CSC sub-population. The purpose of this study was to investigate whether long-term doxorubicin treatment could expand the neuroblastoma cells with CSC characteristics and histone acetylation could affect stemness gene expression during the development of drug resistance. Using n-myc amplified SK-N-Be(2)C and non-n-myc amplified SK-N-SH human neuroblastoma cells, our laboratory generated doxorubicin-resistant cell lines in parallel over 1 year; one cell line intermittently treated with the histone deacetylase inhibitor (HDACi) vorinostat and the other without exposure to HDACi. Cells' sensitivity to chemotherapeutic drugs, the ability to form tumorspheres, and capacity for in vitro invasion were examined. Cell-surface markers and side populations (SPs) were analyzed using flow cytometry. Differentially expressed stemness genes were identified through whole genome analysis and confirmed with real-time PCR. Our results indicated that vorinostat increased the sensitivity of only SK-N-Be(2)C-resistant cells to chemotherapy, made cells lose the ability to form tumorspheres, and reduced in vitro invasion and the SP percentage. CD133 was not enriched in doxorubicin-resistant or vorinostat-treated doxorubicin-resistant cells. Nine stemness-linked genes (ABCB1, ABCC4, LMO2, SOX2, ERCC5, S100A10, IGFBP3, TCF3, and VIM) were downregulated in vorinostat-treated doxorubicin-resistant SK-N-Be(2)C cells relative to doxorubicin-resistant cells. A sub-population of cells with CSC characteristics is enriched during prolonged drug selection of n-myc amplified SK-N-Be(2)C neuroblastoma cells. Vorinostat treatment affects the reversal of drug resistance in SK-N-Be(2)C cells and may be associated with downregulation of stemness gene expression. This work may be valuable for clinicians to design treatment protocols specific for different neuroblastoma patients.
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Affiliation(s)
- X Zheng
- Cancer Biology, Children's Hospital of Chicago Research Center, Ann & Robert H Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA.
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Parada M, Jafari N, Pfaus J. Sexual experience blocks the ability of clitoral stimulation to induce a conditioned place preference in the rat. Physiol Behav 2013; 119:97-102. [DOI: 10.1016/j.physbeh.2013.06.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 04/18/2013] [Accepted: 06/05/2013] [Indexed: 11/16/2022]
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Ahmady-Asbchin S, Tabaraki R, Jafari N, Allahverdi A, Azhdehakoshpour A. Study of nickel and copper biosorption on brown algae Sargassum angustifolium: application of response surface methodology (RSM). Environ Technol 2013; 34:2423-31. [PMID: 24350499 DOI: 10.1080/09593330.2013.772643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study has been focused on the batch culture removal of Cu2+ and Ni2+ ions from the aqueous solution using marine brown algae Sargassum angustifolium. Influences of parameters like pH, initial metal ions concentration and biosorbent dosage on nickel and copper adsorption were also examined using the Box-Behnken design matrix. For biosorption of Cu2+ the optimum pH value was determined as 5.0, optimum biosorbent concentration to 1.0 g/L and optimum initial concentration 0.15 mmol/L. For the biosorption of Ni2+, the optimal condition was the same but the optimum pH value was determined as 6.0. Desorption experiments indicated that CH3COOH and EDTA were efficient desorbents for recovery from Cu2+ and Ni2+. The Langmuir isotherm model was applied to describe the biosorption of the Cu2+ and Ni2+ into S. angustifolium. The maximum uptake of Cu2+ and Ni2+ ions by the S. angustifolium biomass under the optimal conditions was approximately 0.94 and 0.78 mmol/g dry alga, respectively. Response surface models showed that the data were adequately fitted to a second-order polynomial model. Analysis of variance showed a high coefficient of determination value (R2 = 0.993 for Cu2+ and 0.991 for Ni2+) and a satisfactory second-order regression model was derived. In addition, results reported in this research demonstrated the feasibility of employing S. angustifolium as biosorbent for Ni2+ and Cu2+ removal.
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Affiliation(s)
| | - Reza Tabaraki
- Department of Chemistry, Ilam University, Ilam, Iran
| | - Naser Jafari
- Department of Biology, Mazandaran University, Babolsar, Iran
| | - Abdollah Allahverdi
- Division of Structural Biology and Biochemistry, School of Biological Sciences, Nanyang Technological University, Singapore
| | - Ashkan Azhdehakoshpour
- Offshore Fisheries Research Centre of Chabahar, Sub centre of Iranian Fisheries Research Organization (IFRO), Chabahar, Iran
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Jafari N, Dogaheh HP, Bohlooli S, Oyong GG, Shirzad Z, Alibeiki F, Asl SH, Zargar SJ. Expression levels of microRNA machinery components Drosha, Dicer and DGCR8 in human (AGS, HepG2, and KEYSE-30) cancer cell lines. Int J Clin Exp Med 2013; 6:269-274. [PMID: 23641303 PMCID: PMC3631551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 03/30/2013] [Indexed: 06/02/2023]
Abstract
UNLABELLED MicroRNAs (miRNAs) have recently been shown to play fundamental roles in diverse cellular processes and linked to variety of cancers. Dicer and Drosha are two major enzymes in the miRNA maturation process. DGCR8 is the assistant of Drosha in the microprocessor complex. In this study, we evaluated the mRNA expression profiles of major miRNA processing machinery Drosha, Dicer, and DGCR8 in human gastrointestinal (AGS, KYSE30 and HepG2) cancer cell lines. MATERIALS AND METHODS The cells were cultured and harvested, and total cellular RNA was isolated from cells. Then, first-strand cDNA was synthesized from the RNA of cells. Afterward, Quantitative analysis was performed by real-time RT-PCR using the PowerSYBR Green PCR Master Mix. RESULTS Expression levels of Drosha in AGS and HepG2 cells were higher than the controls, whereas, Drosha's expression level in KYSE-30 cell line was lower. The Dicer expression levels in AGS and HepG2 cells were higher, while, its expression level in KYSE-30 cell was lower. The DGCR8 expression levels in all three cell lines were significantly higher than the control samples. CONCLUSION Expression levels of the two most important enzymes of the miRNA machinery, Drosha and Dicer, and microprocessor complex component, DGCR8 were noticeably dysregulated when compared to healthy controls.
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Affiliation(s)
- Naser Jafari
- Department of Biochemistry, School of Medicine, Ardabil University of Medical ScienceArdabil 56197, Iran
- Department of Cell & Molecular Biology, School of Biology, College of Science, University of TehranTehran, Iran
| | - Hadi Peeri Dogaheh
- Department of Microbiology, School of Medicine, Ardabil University of Medical ScienceArdabil 56197, Iran
| | - Shahab Bohlooli
- Department of Pharmacology, School of Medicine, Ardabil University of Medical ScienceArdabil 56197, Iran
| | - Glenn G Oyong
- Molecular Science Unit, Center for Natural Science and Ecological Research, and Biology Department, De La Salle UniversityManila, Philippines
| | - Zohreh Shirzad
- Department of Biochemistry, School of Medicine, Ardabil University of Medical ScienceArdabil 56197, Iran
| | - Fatemeh Alibeiki
- Department of Biochemistry, School of Medicine, Ardabil University of Medical ScienceArdabil 56197, Iran
| | - Saeid Hosseini Asl
- Department of Biochemistry, School of Medicine, Ardabil University of Medical ScienceArdabil 56197, Iran
| | - Seyed Jalal Zargar
- Department of Cell & Molecular Biology, School of Biology, College of Science, University of TehranTehran, Iran
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Nabavi SF, Nabavi SM, Ebrahimzadeh MA, Eslami B, Jafari N. In Vitro Antioxidant and Antihemolytic Activities of Hydroalcoholic Extracts of Allium scabriscapum Boiss. & Ky. Aerial Parts and Bulbs. International Journal of Food Properties 2013. [DOI: 10.1080/10942912.2011.565902] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Seyed Fazel Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
- National Elites Foundation of Iran, Tehran, Iran
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
- National Elites Foundation of Iran, Tehran, Iran
| | - Mohamamd Ali Ebrahimzadeh
- Department of Medicinal Chemistry, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Bahman Eslami
- Department of Biology, University of Mazandaran, Babolsar, Iran
| | - Naser Jafari
- Department of Biology, Islamic Azad University, Ghaemshahr, Iran
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Ahmady-Asbchin S, Jafari N. Removal of nickel and zinc from single and binary metal solutions by Sargassum angustifolium. Water Sci Technol 2013; 68:1384-90. [PMID: 24056438 DOI: 10.2166/wst.2013.375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The capability of Sargassum angustifolium in removing nickel (Ni) (II) and zinc (Zn) (II) from single and binary metal solution was determined. In binary solution the presence of the secondary metal inhibited the sorption of the primary metal by S. angustifolium but the inhibitory effect of Ni during sorption of Zn is stronger than the inhibitory effect of Zn in absorption of Ni. The total metal (Ni + Zn) sorbed from the binary metal solution by S. angustifolium cells always remained lower than the total sorption of individual metals from their respective single metal solutions, thereby suggesting competition between Ni(II) and Zn(II) for the common binding sites on S. angustifolium. The maximum uptake capacities of the S. angustifolium, which was collected near Bushehr, Persian Gulf, Iran in the natural form, at the optimal conditions for Ni(II) and Zn(II) ions in single metal solutions were approximately 0.71 and 0.93 mmol/g dry S. angustifolium, respectively. Under the binary system Ni(II) and Zn(II) uptake capacities were 0.41 mmol Ni/g and 0.36 mmol Zn/g, respectively. Better fitness of equilibrium metal sorption data to the Langmuir than the Freundlich model suggests multilayer adsorption of test metals onto the cell surface.
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Affiliation(s)
- Salman Ahmady-Asbchin
- Department of Basic Science, Faculty of Science, University of Ilam, Ilam, P.O. Box 69315-516, Iran E-mail:
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Nabavi SF, Nabavi SM, Ebrahimzadeh MA, Jafari N, Yazdanpanah S. Biological Activities of Freshwater Algae,Spirogyra singularisNordstedt. Journal of Aquatic Food Product Technology 2013. [DOI: 10.1080/10498850.2011.624292] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Loghmani A, Jafari N, Zamani A, Farajzadegan Z, Bahrami F, Emami H. Abstract P2-12-10: Psycho-spiritual therapy for improving the quality of life and spiritual well-being of women with breast cancer. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p2-12-10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Objective: Psychological distress and morbidity are common consequences of diagnosis and treatment of breast cancer and associated with poor quality of life (QOL). Among several approaches, spirituality has been shown to be significantly associated with improving the quality of life of these patients. The aim of this study was to assess the role of psycho-spiritual therapy intervention in improving the quality of life and spiritual well-being of patients with breast cancer.
Methods: This was a randomized controlled trial study which was conducted in the Breast Cancer Research Center, St. S. Al-Shohada hospital, Isfahan, Iran. Sixty-eight patients with breast cancer were randomized to either psycho-spiritual therapy intervention group or control group who received routine management and educational programs. Before and after 6 weeks of psycho-spiritual therapy sessions, the quality of life was evaluated using Cancer quality-of-life questionnaire (QLQ-C30) and its supplementary breast cancer questionnaire (QLQ-BR23) and Spiritual well-being was measured using the Functional Assessment of Chronic Illness Therapy Spiritual Well-being scale (FACIT-Sp12). Multivariate, repeated-measures ANOVA, T-test and Paired T-test were used for analysis using Predictive Analytic Soft Ware (PASW, version 18) for windows.
Results: In all sixty five patients actually completed the six-week intervention and were evaluated for the outcomes. The mean Global health status score/QOL reached from 44.37 (SD: 13.03) to 68.63 (SD: 10.86), (p < 0.001), (Cohen's d effect size: 2.16, 95% CI: 1.56–2.78). There was a statistically significant difference in all functional scales of QLQ-C30 (p < 0.05) as well as spiritual well-being after intervention. (p = 0.02)
Conclusions: The results of this trial showed that the psycho-spiritual therapy program can improve the spiritual well-being and QOL of women with breast cancer. This program, with its ease of implementation and home practice, could be adopted in comprehensive care programs for women with breast cancer.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P2-12-10.
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Affiliation(s)
- A Loghmani
- Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran; University of Isfahan, Islamic Republic of Iran
| | - N Jafari
- Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran; University of Isfahan, Islamic Republic of Iran
| | - A Zamani
- Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran; University of Isfahan, Islamic Republic of Iran
| | - Z Farajzadegan
- Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran; University of Isfahan, Islamic Republic of Iran
| | - F Bahrami
- Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran; University of Isfahan, Islamic Republic of Iran
| | - H Emami
- Isfahan University of Medical Sciences, Isfahan, Islamic Republic of Iran; University of Isfahan, Islamic Republic of Iran
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Mohammadzadeh A, Jafari N, Babapoursaatlou B, Doustkami H, Hosseinian A, Hasanpour M. Effect of staged preconditioning on biochemical markers in the patients undergoing coronary artery bypass grafting. ISRN Cardiol 2012; 2012:204624. [PMID: 23050163 PMCID: PMC3417168 DOI: 10.5402/2012/204624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 07/02/2012] [Indexed: 11/23/2022]
Abstract
The present study has investigated the effectiveness of staged-preconditioning, in both remote and target organs. After IP the myocardial release of the biochemical markers including, creatine phosphokinase (CPK), cardiac creatine kinase (CK-MB), cardiac troponin T (cTnT) and lactate dehydrogenase (LDH) were evaluated in patients who underwent CABG, with and without staged-preconditioning. Sixty-one patients entered the study; there were 32 patients in the staged-preconditioning group and 29 patients in the control group. All patients underwent on-pump CABG using cardiopulmonary bypass (CPB) techniques. In the staged-preconditioning group, patients underwent two stages of IP on remote (upper limb) and target organs. Each stage of preconditioning was carried out by 3 cycles of ischemia and then reperfusion. Serum levels of biochemical markers were immediately measured postoperatively at 24, 48 and 72 h. Serum CK-MB, CPK and LDH levels were significantly lower in the staged-preconditioning group than in the control group. The CK-MB release in the staged-preconditioning patients reduced by 51% in comparison with controls over 72 h after CABG. These results suggest that myocardial injury was attenuated by the effect of three rounds of both remote and target organ IP.
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Jafari N, Hadavi E. GROWTH AND ESSENTIAL OIL YIELD OF DILL (ANETHUM GRAVEOLENS) AS AFFECTED BY FOLIAR SPRAYS OF CITRIC ACID AND MALIC ACID. ACTA ACUST UNITED AC 2012. [DOI: 10.17660/actahortic.2012.955.42] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Jafari N, Senobari Z. Removal of Pb (II) ions from aqueous solutions by Cladophora rivularis (Linnaeus) Hoek. ScientificWorldJournal 2012; 2012:793606. [PMID: 22629198 PMCID: PMC3354693 DOI: 10.1100/2012/793606] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2011] [Accepted: 12/20/2011] [Indexed: 11/17/2022] Open
Abstract
Biosorption of Pb(II) using Cladophora rivularis was examined as a function of initial pH heavy metal concentration and temperature. The optimum pH value for the biosorption of lead was 4.0. The adsorption equilibriums were well described by Langmuir and Freundlich isotherm models and it was implied by the results that the C. rivularis biomass is suitable for the development of efficient biosorbent in order to remove Pb(II) from wastewater and to recover it. The high values of correlation coefficient (R(2) = 0.984) demonstrate equilibrium data concerning algal biomass, which is well fitted in Freundlich isotherms model equations. The dimensionless parameter R(L) is found in the range of 0.0639 to 0.1925 (0 < R(L) < 1), which confirms the favorable biosorption process. Fourier transform infra-red (FTIR) spectroscopy of C. rivularis was used to reveal the main function groups of biosorption, which were hydroxyl, amine groups, C-H stretching vibrations of -CH3 and -CH2, and complexation with functional groups. All these results suggest that C. rivularis can be used effectively for removal of Pb(II).
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Affiliation(s)
- Naser Jafari
- Department of Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar 11252, Iran.
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Ghoreishi SM, Behpour M, Jafari N, Golestaneh M. Electrochemical Determination of Tyrosine in the Presence of Dopamine and Uric Acid at the Surface of Gold Nanoparticles Modified Carbon Paste Electrode. J CHIN CHEM SOC-TAIP 2012. [DOI: 10.1002/jccs.201100654] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ahmady-Asbchin S, Jafari N. Physicochemical Studies of Copper (II) Biosorption from Wastewater by Marine Brown Algae Sargassum angustifolium C. Agardh (Fucales, Phaeophyceae). ACTA ACUST UNITED AC 2012. [DOI: 10.1615/interjalgae.v14.i4.70] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Jafari N, Farajzadegan Z, Zamani A, Bahrami F, Emami H, Loghmani A. P-1149 - The effect of psycho-spiritual therapy for improving the quality of life of women with breast cancer: a randomized controlled trial. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)75316-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Eslami S, Hajizadeh Moghaddam A, Jafari N, Nabavi SF, Nabavi SM, Ebrahimzadeh MA. Trace element level in different tissues of Rutilus frisii kutum collected from Tajan River, Iran. Biol Trace Elem Res 2011; 143:965-73. [PMID: 20978865 DOI: 10.1007/s12011-010-8885-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Accepted: 10/14/2010] [Indexed: 10/18/2022]
Abstract
Tajan River is among the most significant rivers of the Caspian Sea water basin. In this study, the concentration of Cr, Cu, Fe, Mn, Ni, Pb, Cd, and Zn were determined in brain, heart, liver, gill, bile, and muscle of Rutilus frisii kutum which has great economic value in the Mazandaran state. Trace element levels in fish samples were analyzed by means of atomic absorption spectrometry. Nearly all non-essential metals levels (Ni, Pb, Cd) detected in tissues were higher than limits for fish proposed by FAO/WHO, EU, and TFC. Generally, non-essential metals (Ni, Pb) were so much higher in muscle than the essential metals (Cu, Zn, and Mn) except Fe, which was higher than other metals in nearly all parts, except in gills. Fe distribution pattern in tissues was in order of heart>brain>liver>muscle>bile>gill. Distribution patterns of metal concentrations in the muscle of fish as a main edible part followed the sequence: Fe>Pb>Ni>Cu>Mn>Zn>Cd.
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Affiliation(s)
- Shahram Eslami
- Pharmaceutical Sciences Research Center and Traditional and Complementary Medicine Research Center, School of Pharmacy, Mazandaran University of Medical Sciences, 48189, Sari, Iran
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Khayyati F, Motlagh ME, Kabir MJ, Kazemeini H, gharibi F, Jafari N. The role of family physician in case finding, referral, and insurance coverage in the rural areas. Iran J Public Health 2011; 40:136-9. [PMID: 23113096 PMCID: PMC3481641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Accepted: 08/16/2011] [Indexed: 10/26/2022]
Abstract
BACKGROUND WHO suggest that family physician is the core in the world efforts for quality improvement, cost effectiveness, and equity in the health care systems. This study evaluates the impact of the program on accessibility of the services, case finding, patient referral, feedback process and insurance coverage in the rural health units. METHODS This study was quasi experimental. It compared the function of four health centers and eight health houses in the last three months of year 2004 with 2008. Data extracted from the available documents in the health units. Descriptive and analytical analysis was performed by using SPSS software. RESULTS The presence of physicians in health centers were 75 and 100 percent for 2004 and 2008 respectively, this rate for midwives were 50 and 100 percent for the same years respectively. The total referral cases to the hospitals were 2676, the feedback rate was recorded in 36% of the cases. In this case the follow up rate by physicians was 0% in 2004 and 3.17% in 2008. Insurance coverage rate was 27% and 97% for 2004 and 2008 respectively within a meaningful P value range at 95% CI. CONCLUSION The findings of this study show that the family physician program has the positive impact on function of health units in terms of availability of physicians and midwives and also insurance coverage at health centers in rural area, No impact on patient follow up and case referral rate was detected.
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Affiliation(s)
- F Khayyati
- Dept. of Public Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - M Esmaeil Motlagh
- Population and Family Health Office, Deputy for Health, Ministry of Health and Medical Education, Tehran, Iran
| | - MJ Kabir
- Social Medicine Group, Faculty of Medicine, Gurgan University of Medical Sciences, Gorgan, Iran
| | - H Kazemeini
- PHC Center, Deputy for Health, Ministry of Health and Medical Education, Tehran, Iran,Corresponding author: E-mail:
| | - F gharibi
- Research Management Unit, Deputy for Education and Research, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - N Jafari
- PHC Center, Deputy for Health, Ministry of Health and Medical Education, Tehran, Iran
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Jafari N, Bohlooli S. Cytotoxicity of methylsulfonylmethane (MSM) on esophageal cancer cell line (KYSE30). Clin Biochem 2011. [DOI: 10.1016/j.clinbiochem.2011.08.1117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Soori H, Akbarpour S, Jafari N, Khosravi A, Ainy E. P1-339 Pattern of drowning and its burden in North Coast of Iran. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976f.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Zendehdel K, Marzban M, Nahvijou A, Jafari N. P2-342 Geographical pattern and epidemiology of stomach cancer mortality in Iran. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976k.74] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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