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  1. Article ; Online: SARS-CoV-2 in saliva, viremia and seroprevalence for COVID-19 surveillance at a single hematopoietic stem cell transplantation center: a prospective cohort study.

    Mobile, Rafael Zancan / Warnawin, Stephanie von Stein Cubas / Kojo, Teresinha Keiko / Rodrigues, Jéssica Alline Pereira / Cavilha, Adriana Mendes de Quadros / Zerbinati, Rodrigo Melim / Adamoski, Douglas / Oliveira, Jaqueline Carvalho de / Conzentino, Marcelo Santos / Huergo, Luciano Fernandes / Gradia, Daniela Fiori / Braz-Silva, Paulo Henrique / Schussel, Juliana Lucena

    Revista do Instituto de Medicina Tropical de Sao Paulo

    2022  Volume 64, Page(s) e39

    Abstract: This prospective cohort study aims to analyze the surveillance of COVID-19 at a single hematopoietic stem cell transplantation (HSCT) center in Brazil, in 29 patients undergoing allogeneic HSCT and 57 healthcare workers (nurses and dentists), through ... ...

    Abstract This prospective cohort study aims to analyze the surveillance of COVID-19 at a single hematopoietic stem cell transplantation (HSCT) center in Brazil, in 29 patients undergoing allogeneic HSCT and 57 healthcare workers (nurses and dentists), through viral shedding of SARS-CoV-2 in saliva and plasma and seroprevalence of anti-SARS-CoV-2 IgG. In addition, we report two cases with prolonged persistent detection of SARS-CoV-2 without seroconversion. The sample collection was performed seven times for patients and five times for healthcare workers. Only two patients tested positive for SARS-CoV-2 in their saliva and plasma samples (6.9%) without seroconversion. All healthcare workers were asymptomatic and none tested positive. Two patients (6.9%) and four nurses (8%) had positive serology. No dentists had positive viral detection or positive serology. Our results reflect a low prevalence of positive RT-PCR and seroprevalence of SARS-CoV-2 in patients and healthcare workers at a single HSCT center. Results have also corroborated how the rigorous protocols adopted in transplant centers were even more strengthened in this pandemic scenario.
    MeSH term(s) Antibodies, Viral ; COVID-19/diagnosis ; COVID-19/epidemiology ; Health Personnel ; Hematopoietic Stem Cell Transplantation ; Humans ; Prospective Studies ; SARS-CoV-2 ; Saliva ; Seroepidemiologic Studies ; Viremia
    Chemical Substances Antibodies, Viral
    Language English
    Publishing date 2022-06-06
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 128928-7
    ISSN 1678-9946 ; 0036-4665
    ISSN (online) 1678-9946
    ISSN 0036-4665
    DOI 10.1590/S1678-9946202264039
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Association between SNP rs527616 in lncRNA AQP4-AS1 and susceptibility to breast cancer in a southern Brazilian population.

    Marchi, Rafael D / Mathias, Carolina / Reiter, Gabriel A K / Lima, Rubens Silveira de / Kuroda, Flávia / Urban, Cícero de Andrade / Souza, Ricardo L R de / Gradia, Daniela F / Ribeiro, Enilze M S F / Cavalli, Iglenir J / Oliveira, Jaqueline Carvalho de

    Genetics and molecular biology

    2021  Volume 44, Issue 1, Page(s) e20200216

    Abstract: Breast cancer (BC) is the leading cause of death by this disease in women worldwide. Among the factors involved in tumorigenesis, long non-coding RNAs (lncRNAs) and their differential expression have been associated. Differences in gene expression may be ...

    Abstract Breast cancer (BC) is the leading cause of death by this disease in women worldwide. Among the factors involved in tumorigenesis, long non-coding RNAs (lncRNAs) and their differential expression have been associated. Differences in gene expression may be triggered by variations in DNA sequence, including single nucleotide polymorphisms (SNPs). In the present study, we analyzed the rs527616 (C>G), located in the lncRNA AQP4-AS1, using PCR-SSP in 306 BC patients and 312 controls, from a Brazilian population. In the BC group, the frequency found for CG heterozygotes was above the expected and the overdominant model is the best one to explain our results (OR: 1.70, IC 95%: 1.23-2.34, P<0.001). Furthermore, the SNP were associated with age at BC diagnosis and the risk genotype more frequent in the older age group. According to TCGA data, AQP4-AS1 is down-regulated in BC tissue, and the overexpression is associated with better prognoses, including Luminal A, HER2-, stage 1 of disease and smaller tumor. In conclusion, the CG genotype is associated with increased susceptibility in the southern Brazilian population. This SNP is mapped in the lncRNA AQP4-AS1, showing differential expression in BC samples. Based on these results, we emphasize the potential of the role of AQP4-AS1 in cancer.
    Language English
    Publishing date 2021-03-12
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 1445712-x
    ISSN 1678-4685 ; 1415-4757
    ISSN (online) 1678-4685
    ISSN 1415-4757
    DOI 10.1590/1678-4685-GMB-2020-0216
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: So alike yet so different. Differential expression of the long non-coding RNAs NORAD and HCG11 in breast cancer subtypes.

    Mathias, Carolina / Pedroso, Gabrielle Araújo / Pabst, Fernanda Rezende / Lima, Rubens Silveira de / Kuroda, Flavia / Cavalli, Iglenir João / Oliveira, Jaqueline Carvalho de / Ribeiro, Enilze Maria de Souza Fonseca / Gradia, Daniela Fiori

    Genetics and molecular biology

    2021  Volume 44, Issue 1, Page(s) e20200153

    Abstract: Breast cancer (BC) is a heterogeneous disease, and it is the leading cause of death among women. NORAD and HCG11 are highly similar lncRNAs that present binding sites for PUMILIO proteins. PUMILIO acts on hundreds of mRNA targets, contributing to the ... ...

    Abstract Breast cancer (BC) is a heterogeneous disease, and it is the leading cause of death among women. NORAD and HCG11 are highly similar lncRNAs that present binding sites for PUMILIO proteins. PUMILIO acts on hundreds of mRNA targets, contributing to the modulation of gene expression. We analyzed the expression levels of NORAD and HCG11 in the BC subtypes luminal A (LA) and basal-like (BL), and the regulatory networks associated with these lncRNAs. In the analysis of TCGA cohort (n=329) and Brazilian BC samples (n=44), NORAD was up-regulated in LA while HCG11 was up-regulated in BL subtype. An increased expression of NORAD is associated with reduced disease-free survival in basal-like patients (p = 0.002), which suggests that its prognostic value could be different in specific subtypes. The biological pathways observed for the HCG11 network are linked to the epithelial-to-mesenchymal transition; while NORAD associated pathways appear to be related to luminal epithelial cell transformation. NORAD and HCG11 regulons respectively present 36% and 21.5% of PUMILIO targets, which suggests that these lncRNAs act as a decoy for PUMILIO. These lncRNAs seem to work as players in the differentiation process that drives breast cells to acquire distinct phenotypes related to a specific BC subtype.
    Language English
    Publishing date 2021-03-19
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 1445712-x
    ISSN 1678-4685 ; 1415-4757
    ISSN (online) 1678-4685
    ISSN 1415-4757
    DOI 10.1590/1678-4685-GMB-2020-0153
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Large-scale screening of asymptomatic for SARS-CoV-2 variants of concern and rapid P.1 takeover, Curitiba, Brazil

    Adamoski, Douglas / Oliveira, Jaqueline Carvalho de / Bonatto, Ana Claudia / Wassem, Roseli / Nogueira, Meri Bordignon / Raboni, Sonia Mara / Trindade, Edvaldo da Silva / Souza, Emanuel Maltempi de / SCB-UFPR COVID-19 team / Gradia, Daniela Fiori

    medRxiv

    Abstract: To provide a safer environment for individuals working on-site at the Federal University of Parana, Curitiba, Brazil, we performed a large-scale mass testing SARS-CoV-2 program coupled with variant genotyping using two PCR-based approaches. We observed a ...

    Abstract To provide a safer environment for individuals working on-site at the Federal University of Parana, Curitiba, Brazil, we performed a large-scale mass testing SARS-CoV-2 program coupled with variant genotyping using two PCR-based approaches. We observed a fast dominance of the Gamma variant, displacing other variants in less than three months.
    Keywords covid19
    Language English
    Publishing date 2021-06-21
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2021.06.18.21258649
    Database COVID19

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  5. Article ; Online: Severe acute respiratory syndrome coronavirus 2 infection among healthcare workers in a tertiary public hospital in Curitiba, Brazil.

    Spalanzani, Regiane Nogueira / Genelhoud, Gustavo / Raboni, Sonia Mara / Almeida, Sergio Monteiro de / Pereira, Luciane Aparecida / Rotta, Indianara / Cavalli, Barbara Maria / Moreira, Francielli Brusco / Dino, Carolina Lumi Tanaka / Takahashi, Gislene Reche de Almeida / Cognialli, Regielly Caroline Raimundo / Spiri, Beatriz Sanada / Bochnia-Bueno, Lucas / Oliveira, Jaqueline Carvalho de / Adamoski, Douglas / Gradia, Daniela Fiori / Bonatto, Ana Cláudia / Wassem, Roseli / Alves, Juliana Mazini /
    Padilha, Raquel da Silva / Brasil, Vitor Jorge Woytuski / Almeida, Bernardo Montesanti Machado de / Nogueira, Meri Bordignon

    Revista da Sociedade Brasileira de Medicina Tropical

    2022  Volume 55, Page(s) e0265

    Abstract: Background: We aimed to describe the clinical characteristics of coronavirus disease 2019 (COVID-19) among healthcare workers (HCWs) in Curitiba, Brazil.: Methods: Upper respiratory samples from 1077 HCWs were tested for severe acute respiratory ... ...

    Abstract Background: We aimed to describe the clinical characteristics of coronavirus disease 2019 (COVID-19) among healthcare workers (HCWs) in Curitiba, Brazil.
    Methods: Upper respiratory samples from 1077 HCWs were tested for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) using reverse transcription polymerase chain reaction from June 16, 2020 to December 9, 2020.
    Results: Overall, 32.7% of HCWs were infected. The positivity rates in symptomatic and asymptomatic HCWs were 39.2% and 15.9%, respectively. Hospital departments categorized as high-risk for exposure had the highest number of infected HCWs.
    Conclusions: Early diagnosis and isolation of infected HCWs remain key in controlling SARS-CoV-2 transmission because HCWs in close contact with COVID-19 patients are more likely to be infected than those who are not.
    MeSH term(s) Brazil/epidemiology ; COVID-19 ; Health Personnel ; Hospitals, Public ; Humans ; SARS-CoV-2
    Language English
    Publishing date 2022-02-25
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 1038126-0
    ISSN 1678-9849 ; 0037-8682
    ISSN (online) 1678-9849
    ISSN 0037-8682
    DOI 10.1590/0037-8682-0265-2021
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Alkaloids derived from flowers of Senna spectabilis, (-)-cassine and (-)-spectaline, have antiproliferative activity on HepG2 cells for inducing cell cycle arrest in G1/S transition through ERK inactivation and downregulation of cyclin D1 expression.

    Pereira, Rodrigo Machado / Ferreira-Silva, Guilherme Álvaro / Pivatto, Marcos / Santos, Luciana de Ávila / Bolzani, Vanderlan da Silva / Chagas de Paula, Daniela Aparecida / Oliveira, Jaqueline Carvalho de / Viegas Júnior, Cláudio / Ionta, Marisa

    Toxicology in vitro : an international journal published in association with BIBRA

    2016  Volume 31, Page(s) 86–92

    Abstract: Cancer is one of the most critical problems of public health in the world and one of the main challenges for medicine in this century. Unfortunately, most patients are diagnosed at advanced stage, when the treatment options are palliative. Consequently, ... ...

    Abstract Cancer is one of the most critical problems of public health in the world and one of the main challenges for medicine in this century. Unfortunately, most patients are diagnosed at advanced stage, when the treatment options are palliative. Consequently, the search for novel therapeutic options is imperative. In the context, the plants represent an important source for discovering of novel compounds with pharmacological potential including antineoplastic agents. Herein, we aimed to investigate in vitro antiproliferative and cytotoxic potentials of an alkaloid mixture derived from Senna spectabilis, (−)-cassine (1) and (−)-spectaline (2). These alkaloids reduced cell viability in a concentration-dependent manner of six tumor cell lines. From initial screening, HepG2 cells were selected for further investigations. We show that alkaloids 1/2 have an important antiproliferative activity on HepG2 cells due to their ability in inducing cell cycle arrest in G1/S transition. This effect was associated to ERK inactivation and down-regulation of cyclin D1 expression. In addition, we evidenced a disruption of the microfilaments and microtubules in a consequence of the treatment. Taken together, the data showed by the first time that alkaloids 1/2 strongly inhibit cell proliferation of hepatocellular carcinoma cells. Therefore, they represent promise antitumor compounds against liver cancer and should be considered for further anticancer in vivo studies.
    MeSH term(s) Antineoplastic Agents/pharmacology ; Cell Cycle Checkpoints/drug effects ; Cell Line, Tumor ; Cell Proliferation/drug effects ; Cell Survival/drug effects ; Cyclin D1/metabolism ; Down-Regulation ; Extracellular Signal-Regulated MAP Kinases/antagonists & inhibitors ; Extracellular Signal-Regulated MAP Kinases/metabolism ; Flowers ; Humans ; Ketones/pharmacology ; Piperidines/pharmacology ; Senna Plant
    Chemical Substances Antineoplastic Agents ; Ketones ; Piperidines ; spectaline ; Cyclin D1 (136601-57-5) ; cassine (5227-24-7) ; Extracellular Signal-Regulated MAP Kinases (EC 2.7.11.24)
    Language English
    Publishing date 2016-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 639064-x
    ISSN 1879-3177 ; 0887-2333
    ISSN (online) 1879-3177
    ISSN 0887-2333
    DOI 10.1016/j.tiv.2015.11.018
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Anticancer activity of 7-epiclusianone, a benzophenone from Garcinia brasiliensis, in glioblastoma

    Sales, Leilane / Pezuk, Julia Alejandra / Borges, Kleiton Silva / Brassesco, María Sol / Scrideli, Carlos Alberto / Tone, Luiz Gonzaga / Santos, Marcelo Henrique dos / Ionta, Marisa / Oliveira, Jaqueline Carvalho de

    BMC Complement Altern Med. 2015 Dec., v. 15, no. 1 p.393-393

    2015  

    Abstract: BACKGROUND: Glioblastoma is the most common tumor of the central nervous system and one of the hardest tumors to treat. Consequently, the search for novel therapeutic options is imperative. 7-epiclusianone, a tetraprenylated benzophenone isolated from ... ...

    Abstract BACKGROUND: Glioblastoma is the most common tumor of the central nervous system and one of the hardest tumors to treat. Consequently, the search for novel therapeutic options is imperative. 7-epiclusianone, a tetraprenylated benzophenone isolated from the epicarp of the native plant Garcinia brasiliensis, exhibits a range of biological activities but its prospect anticancer activity is underexplored. Thus, the aim of the present study was to evaluate the influence of 7-epiclusianone on proliferation, clonogenic capacity, cell cycle progression and induction of apoptosis in two glioblastoma cell lines (U251MG and U138MG). METHODS: Cell viability was measured by the MTS assay; for the clonogenic assay, colonies were stained with Giemsa and counted by direct visual inspection; For cell cycle analysis, cells were stained with propidium iodide and analyzed by cytometry; Cyclin A expression was determined by immunoblotting; Apoptotic cell death was determined by annexin V fluorescein isothiocyanate labeling and Caspase-3 activity in living cells. RESULTS: Viability of both cell lines was drastically inhibited; moreover, the colony formation capacity was significantly reduced, demonstrating long-term effects even after removal of the drug. 7-epiclusianone treatment at low concentrations also altered cell cycle progression, decreased the S and G2/M populations and at higher concentrations increased the number of cells at sub-G1, in concordance with the increase of apoptotic cells. CONCLUSION: The present study demonstrates for the first time the anticancer potential of 7-epiclusianone against glioblastoma cells, thus meriting its further investigation as a potential therapeutic agent.
    Keywords Garcinia brasiliensis ; antineoplastic activity ; apoptosis ; benzophenones ; caspase-3 ; cell cycle ; cell viability ; central nervous system ; complement ; cyclins ; drugs ; exocarp ; fluorescein ; glioblastoma ; immunoblotting ; indigenous species ; isothiocyanates ; propidium ; therapeutics
    Language English
    Dates of publication 2015-12
    Size p. 393.
    Publishing place BioMed Central
    Document type Article ; Online
    ZDB-ID 2050429-9
    ISSN 1472-6882
    ISSN 1472-6882
    DOI 10.1186/s12906-015-0911-1
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: COVID-19: The question of genetic diversity and therapeutic intervention approaches.

    Figueiredo, David Livingstone Alves / Ximenez, João Paulo Bianchi / Seiva, Fábio Rodrigues Ferreira / Panis, Carolina / Bezerra, Rafael Dos Santos / Ferrasa, Adriano / Cecchini, Alessandra Lourenço / Medeiros, Alexandra Ivo de / Almeida, Ana Marisa Fusco / Ramão, Anelisa / Boldt, Angelica Beate Winter / Moya, Carla Fredrichsen / Chin, Chung Man / Paula, Daniel de / Rech, Daniel / Gradia, Daniela Fiori / Malheiros, Danielle / Venturini, Danielle / Tavares, Eliandro Reis /
    Carraro, Emerson / Ribeiro, Enilze Maria de Souza Fonseca / Pereira, Evani Marques / Tuon, Felipe Francisco / Follador, Franciele Aní Caovilla / Fernandes, Glaura Scantamburlo Alves / Volpato, Hélito / Cólus, Ilce Mara de Syllos / Oliveira, Jaqueline Carvalho de / Rodrigues, Jean Henrique da Silva / Santos, Jean Leandro Dos / Visentainer, Jeane Eliete Laguila / Brandi, Juliana Cristina / Serpeloni, Juliana Mara / Bonini, Juliana Sartori / Oliveira, Karen Brajão de / Fiorentin, Karine / Lucio, Léia Carolina / Faccin-Galhardi, Ligia Carla / Ferreto, Lirane Elize Defante / Lioni, Lucy Megumi Yamauchi / Consolaro, Marcia Edilaine Lopes / Vicari, Marcelo Ricardo / Arbex, Marcos Abdo / Pileggi, Marcos / Watanabe, Maria Angelica Ehara / Costa, Maria Antônia Ramos / Giannini, Maria José S Mendes / Amarante, Marla Karine / Khalil, Najeh Maissar / Lima Neto, Quirino Alves de / Herai, Roberto H / Guembarovski, Roberta Losi / Shinsato, Rogério N / Mainardes, Rubiana Mara / Giuliatti, Silvana / Yamada-Ogatta, Sueli Fumie / Gerber, Viviane Knuppel de Quadros / Pavanelli, Wander Rogério / Silva, Weber Claudio da / Petzl-Erler, Maria Luiza / Valente, Valeria / Soares, Christiane Pienna / Cavalli, Luciane Regina / Silva, Wilson Araujo

    Genetics and molecular biology

    2022  Volume 44, Issue 1 Suppl 1, Page(s) e20200452

    Abstract: Coronavirus disease 2019 (COVID-19), caused by the Severe Acute Respiratory Syndrome Coronavirus type 2 (SARS-CoV-2), is the largest pandemic in modern history with very high infection rates and considerable mortality. The disease, which emerged in China' ...

    Abstract Coronavirus disease 2019 (COVID-19), caused by the Severe Acute Respiratory Syndrome Coronavirus type 2 (SARS-CoV-2), is the largest pandemic in modern history with very high infection rates and considerable mortality. The disease, which emerged in China's Wuhan province, had its first reported case on December 29, 2019, and spread rapidly worldwide. On March 11, 2020, the World Health Organization (WHO) declared the COVID-19 outbreak a pandemic and global health emergency. Since the outbreak, efforts to develop COVID-19 vaccines, engineer new drugs, and evaluate existing ones for drug repurposing have been intensively undertaken to find ways to control this pandemic. COVID-19 therapeutic strategies aim to impair molecular pathways involved in the virus entrance and replication or interfere in the patients' overreaction and immunopathology. Moreover, nanotechnology could be an approach to boost the activity of new drugs. Several COVID-19 vaccine candidates have received emergency-use or full authorization in one or more countries, and others are being developed and tested. This review assesses the different strategies currently proposed to control COVID-19 and the issues or limitations imposed on some approaches by the human and viral genetic variability.
    Language English
    Publishing date 2022-04-08
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 1445712-x
    ISSN 1678-4685 ; 1415-4757
    ISSN (online) 1678-4685
    ISSN 1415-4757
    DOI 10.1590/1678-4685-GMB-2020-0452
    Database MEDical Literature Analysis and Retrieval System OnLINE

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