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Viscum Album Modulates Apoptotic Related Genes in Melanoma Tumor of Mice

American Journal of Molecular Biology 2014年第2期4卷 49-58页

作者： anamaria da silva facina Gil facina Ismael dale Cotrim Guerreiro da silva Giovana Aparecida Goncalves Fernando Augusto de Almeida silvana Aparecida Alves Correa de Noronha Samuel Marcos Ribeiro de Noronha Mary Uchiyama Nakamura Departament of Dermatology Federal University of Sao PauloSao PauloBrazil Department of Gynecology Federal University of Sao PauloSao PauloBrazil Department of Surgery Federal University of Sao PauloSao PauloBrazil Departament of Obstetrics Federal University of Sao PauloSao PauloBrazil

Cancer is a major public health problem throughout the world. It is estimated that one third of the American population will develop the disease at some time during their lifetimes. Among these, melanoma will account for 7% of the cases. In Brazil, in 2012, it is estimated that over six thousand new melanoma cases occurred. During recent years, the incidence of melanoma has increased, mainly due to a more constant exposure of the skin to sunlight. In this work, our aim is to assess the expression of apoptotis-related genes melanoma tumors in mice treated with Viscum album (VA). This will allow us to better understand the molecular mechanisms underlying tumor cell death activation caused by this compound. Our results clearly demonstrate upregulation of pro apoptotic genes (Trp53bp2, Nol3, Fadd, Tnfsf10, Traf1, Traf2, Cflar, Card10, Nod1, Casp 2, Casp7, Xiap, dad1, and Dffb). Further bioinformatics-based tool analysis allowed us to assess which specific cell death-related intracellular pathways were activated by VA treatment. Two major effects of VA in melanoma cells could be observed: generation of an immunomudulatory Th-1 like action, recruiting several interleukines, and cell death activation through Caspase7, associated uspstream with Card10 and downstream with CAD. In summary, VA modulates apoptosis related genes in cancer melanoma cells. Although a deeper study should be conducted, VA seems to interfere with important signaling pathways within melanoma cells that control the cellular mechanisms of apoptosis activation. Therapeutic approaches using VA as an antineoplastic and adjuvant medication compounding should be considered.

关键词： Viscum Album Melanoma Apoptosis Pathways PCR Array Immunohistochemistry

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Sleep disturbances as an adverse effect of propranolol use in children with infantile hemangioma

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World Journal of Pediatrics 2020年第5期16卷 537-538页

作者： Ellen M.S.Xerfan Monica L.Andersen anamaria S.facina Sergio Tufik Jane Tomimori Programa de Pós-Gradua(c)(a)o em Medicina Translacional Universidade Federal de S(a)o Paulo(UNIFESP)S(a)o PauloBrazil Departamento de Dermatologia Universidade Federal de S(a)o Paulo(UNIFESP)S(a)o PauloBrazil Departamento de Psicobiologia Universidade Federal de S(a)o Paulo(UNIFESP)S(a)o PauloBrazil

Infantile hemangiomas(IHs)are the most prevalent benign vascular tumor in children,with an estimated rate of 5-10%.Most IHs resolve spontaneously after the proliferation stage,but about 12-24%develop with sequelae and complications which require pharmacological interventions[1].The beta blocker propranolol is considered as the first-line treatment for complicated cases of IHs[2].

关键词： propranolol children effect

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Plasma Levels of Angiotensin-Converting Enzymes 1 and 2 and <i>AGTR</i>2 (T1247G and A5235G) Gene Polymorphisms Are Associated to Breast Cancer Progression

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Journal of Cancer Therapy 2013年第9期4卷 1403-1410页

作者： Maria Del Carmen Garcia Molina Wolgien Ismael dale Cotrim Guerreiro da silva Afonso Celso Pinto Nazário Clovis Riyuchi Nakaie silvana Aparecida Alves Corrêa de Noronha Samuel Marcos Ribeiro de Noronha Gil facina Biophisics Department Escola Paulista de Medicina da Universidade Federal de Sao Paulo (EPM-UNIFESP) Sao Paulo Brazil Gynecology Department Escola Paulista de Medicina/Universidade Federal de Sao Paulo (EPM-UNIFESP) Sao Paulo Brazil Surgery Department Escola Paulista de Medicina/Universidade Federal de Sao Paulo (EPM-UNIFESP) Sao Paulo Brazil

Background: Breast cancer is the most common type of cancer among women. Diagnosed and treated timely, patients may have good prognostics. In Brazil, in 2012, the estimate of new cases was 52,680 and the number of registered deaths in 2012 was 12,852. The Renin-Angiotensin System (RAS) is known for its role in arterial hypertension and in other cardiovascular diseases. Angiotensin-Converting Enzyme 2 (ACE2) is the key to Ang-(1-7) formation, and counterbalances the ACE1/AngII/AGTR1 axis actions. RAS components have complex interactions with different tissues and their actions are not restricted to the cardiovascular system. Recently, the RAS has been associated with different types of cancers and in particular with gynecological cancers. Objectives: Our aim is to investigate possible associations between allelic distribution of two genetic polymorphisms in the AGTR2 receptor with ACEs 1 and 2 plasma levels among women with breast cancer. Patients and Methods: Patients with breast cancer were genotyped for two polymorphisms of the AGTR2 (T1247G and A5235G). Genotyping assays (TaqMan) were performed with genomic DNA extracted from blood cells. ACEs plasma level measurements were conducted in women from the breast-cancer group (N = 53). ACEs were measured in the plasma of these patients using ELISA kits. Results: SNPs genotype distribution is correlated with ACEs plasma levels. ACEs plasma levels are also correlated with clinical variables and ACE2 high levels are associated with better prognostics. Conclusions: Changes in circulating levels of ECA1/AngII ECA2/ Ang-(1-7) determine the magnitude of the inflammatory response that an individual can trigger and the variation in ACE 1 and 2 plasma level measurements in the blood of breast cancer patients suggests an association with the process of mammary carcinogenesis. Thus, the RAS may be associated with the process of mammary carcinogenesis by both genotypic variations of RAS components and by circulating levels of ACEs

关键词： Angiotensin-Converting Enzyme 1 Angiotensin-Converting Enzyme 2 Angiotensin II Type 2 Receptor Breast Neoplasm ACEs Plasma Level Genetic Polymorphisms

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Synthesis, Characterization, and Study of PLGA Copolymer <i>in Vitro</i>Degradation

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Journal of Biomaterials and Nanobiotechnology 2015年第1期6卷 8-19页

作者： anamaria Teodora Coêlho Rios silva Barbara Camilla Oliveira Cardoso Maria Elisa Scarpelli Ribeiro e silva Roberto Fernando Souza Freitas Ricardo Geraldo Sousa Polymer Science and Technology Laboratory Chemical Engineering Department School of Engineering Federal University of Minas Gerais Belo Horizonte Brazil

The poly(lactic-co-glycolic acid), known as PLGA, is one of the main bioreabsorbable polymers used in the field of medicine today. This copolymer is widely applied in sutures, devices geared toward the controlled release of medication, and the guided regeneration of bone tissue as it presents a short degradation time. This work aimed to synthesize the 82/18 PLGA (expressed by the mass ratio of D,L-lactide and glycolide, respectively), to characterize and study the in Vitro degradation in the form of rods in phosphate buffer solution (PBS). The copolymer was synthesized by opening the cyclic dimer rings of the monomers D,L-lactide and glycolide, in the presence of the tin octanoate initiator and of the lauryl alcohol co-initiator. The characterization of the copolymer and the follow-up of its in vitro degradation were studied using: Differential Scanning Calorimetry (DSC), Thermogravimetry (TG), Infrared Molecular Absorption Spectroscopy with Fourier Transform (FTIR), Rheometry, and Scanning Electron Microscopy (SEM). Through these characterization techniques, it was possible to obtain the glass transition temperature, thermal stability, chemical composition, morphology, and molar mass of both the synthesized and the degraded copolymer. The molar mass of the synthesized copolymer was, approximately, 106 g·mol-1. The degradation rate of PLGA significantly increased from the 19th to the 28th day in PBS. After 28 days in PBS, the glass transition temperature and the molar mass reduced from 45°C to 17°C and from 1.5 × 106 g·mol-1?to 7.5 × 104?g·mol-1, respectively. The pH of the medium has a significant influence on the copolymer degradation profile. When it diminishes, it accelerates the degradation process, resulting in smaller PLGA polymer chains. This pH dependent degradation can be useful for drug release systems.

关键词： Synthesis Characterization In Vitro Degradation PLGA

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Angiotensin-(1-7)and Human Chorionic Gonadotropin(hCG)Modulate the Nuclear Transcription Factors or Nuclear Receptors Genes in the Tumorigenic Undifferentiated Breast Cancer Cell Line SKBR3

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Journal of Cancer Therapy 2013年第7期4卷 70-74页

作者： Isidoro Binda Neto Samuel Marcos Ribeiro de Noronha silvana Aparecida Alves Correa de Noronha Maria Del Carmen Garcia Molina Wolgien Alexandre Jesus Barros Clovis Ryiuchi Nakaie Suma Imura Shimuta Gil facina Ismael dale Cotrim Guerreiro da silva Laboratorio de Ginecologia Molecular Universidade Federal de Sao PauloSao PauloBrazil Universidade Federal do Estado do Rio de Janeiro Rio de JaneiroBrazil Laboratorio de Cirurgia Translacional Departamento de CirurgiaUNIFESP/EPMSao PauloBrazil Departamento de Biofísica Universidade Federal de Sao PauloSao PauloBrazil

Breast cancer is the most common cancer among women. Angiotensin-(1 - 7) [Ang-(1 - 7)] has been correlated with cancer antiproliferative and apoptotic effects, similar properties of the human Chorionic Gonadotrofin (hCG). The aims of this work are to evaluate the role of Ang-(1 - 7) and of hCG in modulating the expression of Nuclear Receptors and Coregulators related genes in the tumorigenic breast cell line SK-BR3. Three experimental groups were created: control, hCG and hCG + Ang-(1 - 7). Cells were treated for 11 days and then had their RNA extracted. Samples were loaded into PCR Array plates containing 84 genes relate to Nuclear Receptors and Coregulators pathways. Gene expression data were used to construct canonical pathways (MetacoreTM). hCG and hCG + Ang-(1 - 7) treatments markedly modulate the expression of Nuclear Receptors and Coregulators related genes. hCG differentially expressed 17% of the genes, being 29% upregulated and 71% downregulated. Meanwhile, hCG + Ang-(1 - 7) changed the expression of 30% of the genes on the plate, among these genes 56% were upregulated and 44% downregulated. Among these differentially expressed genes, we highlight Esr1, Nr2f2, and Nr2f1, Esr1, Hdac5, and Nr4A1 (>4 fold). Finally MetaCore analysis based on Gene Ontology (GO) generated six networks for hCG and ten networks for the combined treatment. All generated networks are related to regulation of apoptosis or to Programmed Cell Death processes. In summary, our results herein demonstrate that the modulation of sexual hormones and of other nuclear factor genes expression might underlie the tumorigenic protection effect and the induction of cell differentiation caused by the hormones hCG and Ang-(1 - 7), especially in Cancer Stem Cells.

关键词： Breast Stem Cancer Cells SK-BR3 hCG Angiotensin-(1-7)

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Rheological and Morphological Properties of Composites Based on Polylactide and Talc

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材料科学与工程（中英文B版） 2013年第11期3卷 695-699页

作者： Talita F. Cipriano Ana Lucia Nazareth da silva Antonio Henrique Monteiro da Fonseca Thome da silva anamaria Furtado de Sousa Gustavo Monteiro da silva Christine Rabello do Nascimento Instituto de Macromol~culas Professora Eloisa Mano (IMA/UFRJ) Rio de Janeiro 21945-970 Brasil Departamento Agricola e Meio Ambiente (UFF) Niteroi 24210-240 Brasil Instituto de Quimica (IQ/UERJ) 20550-013 Brasil Programa de Engenharia Metalurgica (PEMM/COPPE/UFRJ) Rio de Janeiro 21941-908 Brasil

Polylactide (PLA) is an emerging material mainly because it can be synthesized from renewable resources and is thus environmentally and ecologically safe. In this study, composites of PLA and talc were prepared by melt-blending technique, using a twin screw extruder. The influence of talc content on the rheological properties of pure PLA and its composites were evaluated. Dynamic rheological tests show that the incorporation of talc particles into PLA decreased system viscosity due to the filler"s lubricant effect. However, as talc content increased, system"s viscosity tended also to increase and materials with higher elastic behavior were produced, further with a higher plastic behavior in relation to pure PLA. This behavior can be observed by SEM micrographs.

关键词：复合材料流变性能聚乳酸滑石形态特性扫描电子显微镜双螺杆挤出机粘度降低

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