LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 117

Search options

  1. Article ; Online: Strategies for evidence-based in head and neck cancer: practical examples in developing systematic review questions.

    Guerra, Eliete Neves Silva / Amorim Dos Santos, Juliana / Coletta, Ricardo D / De Luca Canto, Graziela

    Frontiers in oral health

    2024  Volume 5, Page(s) 1350535

    Abstract: A systematic review (SR) requires several steps to be conducted. A major and initial challenge is to formulate a focused research question that may have high scientific relevance to provide evidence-based results and strategies. This narrative mini- ... ...

    Abstract A systematic review (SR) requires several steps to be conducted. A major and initial challenge is to formulate a focused research question that may have high scientific relevance to provide evidence-based results and strategies. This narrative mini-review aims to present different categories of systematic reviews currently applied in Head and Neck Cancers (HNC), focusing on the strategies to provide results for evidence-based decision making. The SRs identified were of intervention, diagnostic testing, prognosis,
    Language English
    Publishing date 2024-02-02
    Publishing country Switzerland
    Document type Journal Article ; Review
    ISSN 2673-4842
    ISSN (online) 2673-4842
    DOI 10.3389/froh.2024.1350535
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Knowledge, Attitude and Practices towards the Prevention of Schistosomiasis Mansoni in an Endemic Area of Alagoas, Northeast Brazil.

    Santos, Adriano José Dos / Lima, Shirley Verônica Melo Almeida / Sousa, Alvaro Francisco Lopes de / Vasconcelos Dos Santos, Aytana / Santos, Israel Gomes de Amorim / Bezerra Santos, Márcio / Feitosa, Vera Lucia Corrêa / Santos, Allan Dantas Dos / Primão, Juliana Cristina Magnani / Andrade, Denise de / Silva, José Rodrigo Santos

    Tropical medicine and infectious disease

    2023  Volume 8, Issue 1

    Abstract: We analyzed the knowledge, attitudes and practices (KAP) of schistosomiasis mansoni prevention in an endemic area of Brazil. This cross-sectional study was conducted between March and May 2021, with 412 participants living in the municipality of Feira ... ...

    Abstract We analyzed the knowledge, attitudes and practices (KAP) of schistosomiasis mansoni prevention in an endemic area of Brazil. This cross-sectional study was conducted between March and May 2021, with 412 participants living in the municipality of Feira Grande, Alagoas, Brazil. Data collection occurred through visits to the Health Center Urbano II and Massapê, through an interview with a structured questionnaire to identify the levels of KAP regarding schistosomiasis prevention. Of all respondents, 70.87% lived in rural areas, 22.66% reported a history of past schistosomiasis and 52.71% never participated in schistosomiasis control program actions. Factors associated with better KAP scores were being part of an older age group, not using rainwater and having no history of past schistosomiasis. Specifically, among the domains, attitude was the highest score and knowledge was the lowest. Participation in a health intervention program, knowing someone who had schistosomiasis and having been informed through a public health program seemed to have an important impact on the population's KAP. Our results contributed to broadening perceptions about schistosomiasis prevention, highlighting the positive impacts that health programs and interventions have on disease control.
    Language English
    Publishing date 2023-01-03
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2414-6366
    ISSN (online) 2414-6366
    DOI 10.3390/tropicalmed8010034
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Photobiomodulation effects on fibroblasts and keratinocytes after ionizing radiation and bacterial stimulus.

    Monteiro, Mylene Martins / Amorim Dos Santos, Juliana / Paiva Barbosa, Victor / Rezende, Taia Maria Berto / Guerra, Eliete Neves Silva

    Archives of oral biology

    2023  Volume 159, Page(s) 105874

    Abstract: ... to enhance those genes expression in a dose dependent way.: Conclusions: The present study showed ...

    Abstract Objective: Photobiomodulation therapy (PBMT) has proven to reduce inflammation and pain and increase wound healing. Thus, the aim of this study was to analyze the effects of PBMT parameters on migration, proliferation, and gene expression after ionizing radiation and bacterial-induced stress in an in vitro study.
    Design: Keratinocytes (HaCaT) and Fibroblasts (HGFs) were grown in DMEM with 10 % fetal bovine serum until stressful condition induction with lipopolysaccharide (LPS) of Escherichia coli (1 µg/mL), Porphyromonas gingivalis protein extract (5 µg/mL) and ionizing radiation (8 Gy). Low-laser irradiation (660 nm, 30 mW) was carried out in four sessions, with 6 h intervals, and energy density of 2, 3, 4, and 5 J/cm². Scratch assays, immunofluorescence, and RT-qPCR were performed.
    Results: Treated fibroblasts and keratinocytes showed significant response in proliferation and migration after scratch assays (p < 0.05). Higher expressions of α-SMA in fibroblasts and F-actin in keratinocytes were observed in cells subjected to 3 J/cm². PI3K-pathway genes expression tended to enhance in fibroblasts, presenting a higher relative expression when compared to keratinocytes. In keratinocytes, PBMT groups demonstrated deregulated expression for all inflammatory cytokines' genes tested while fibroblasts presented a tendency to enhance those genes expression in a dose dependent way.
    Conclusions: The present study showed that delivering 660 nm, 30 mW was effective to stimulate cell migration, proliferation and to accelerate wound healing. PBMT can modulate cytokines and pathways involved in wound repair. The different energy densities delivering distinct responses in vitro highlights that understanding laser parameters is fundamental to improve treatment strategies.
    MeSH term(s) Low-Level Light Therapy ; Phosphatidylinositol 3-Kinases ; Keratinocytes ; Fibroblasts/radiation effects ; Cell Proliferation/radiation effects ; Radiation, Ionizing
    Chemical Substances Phosphatidylinositol 3-Kinases (EC 2.7.1.-)
    Language English
    Publishing date 2023-12-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 80227-x
    ISSN 1879-1506 ; 0003-9969
    ISSN (online) 1879-1506
    ISSN 0003-9969
    DOI 10.1016/j.archoralbio.2023.105874
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Head and neck cancer stem cell maintenance relies on mTOR signaling, specifically involving the mechanistic target of rapamycin complexes 1 and 2 (mTORC1 and mTORC2).

    Almeida, Luciana O / Silva, Luan César / Emerick, Carolina / Amorim Dos Santos, Juliana / Castilho, Rogerio M / Squarize, Cristiane H

    Archives of oral biology

    2023  Volume 157, Page(s) 105840

    Abstract: Objective: Emerging evidence suggests that the modest response of head and neck squamous cell carcinoma (HNSCC) to treatment is associated with cancer stem cells (CSC). However, the signaling pathways that play a role in HNSCC CSC maintenance and ... ...

    Abstract Objective: Emerging evidence suggests that the modest response of head and neck squamous cell carcinoma (HNSCC) to treatment is associated with cancer stem cells (CSC). However, the signaling pathways that play a role in HNSCC CSC maintenance and therapy response are not well-understood. In this study, we investigate the response of CSCs to phosphatase and tensin homolog (PTEN) modulation and its potential dependency on the mammalian target of rapamycin (mTOR) signaling.
    Design: PTEN deficiency was stably induced using short hairpin RNA (shRNA). Downregulation of RPTOR/mTORC1 and RICTOR/mTORC2 was achieved using small interfering RNA (siRNA). CSCs were evaluated through tumorsphere formation and were classified into various subtypes: parasphere, merosphere, and holosphere. We investigated the effect of rapamycin on CSC properties in both control and PTEN-deficient HNSCC cells.
    Results: PTEN deficiency led to an accumulation of CSCs and enhanced a favorable response to rapamycin treatment. The viability of HNSCC CSCs was dependent on mTOR signaling. Deficiencies in both mTORC1 and mTORC2 reduced the number of CSCs. However, CSCs with PTEN deficiency had a greater reliance on mTORC1 signaling. Interestingly, when considering CSC subtypes, a deficiency in mTORC2 led to an increased number of paraspheres in both the control and PTEN-deficient groups.
    Conclusions: Loss of PTEN signaling increased the HNSCC CSC population, which can be targeted by rapamycin. However, the mTORC2 deficiency can induce a problematic selection of paraspheres CSCs subtype.
    MeSH term(s) Humans ; Mechanistic Target of Rapamycin Complex 2/genetics ; Mechanistic Target of Rapamycin Complex 2/metabolism ; Mechanistic Target of Rapamycin Complex 1/genetics ; Mechanistic Target of Rapamycin Complex 1/metabolism ; Sirolimus/pharmacology ; Squamous Cell Carcinoma of Head and Neck ; TOR Serine-Threonine Kinases ; Head and Neck Neoplasms ; Stem Cells/metabolism
    Chemical Substances Mechanistic Target of Rapamycin Complex 2 (EC 2.7.11.1) ; Mechanistic Target of Rapamycin Complex 1 (EC 2.7.11.1) ; Sirolimus (W36ZG6FT64) ; TOR Serine-Threonine Kinases (EC 2.7.11.1)
    Language English
    Publishing date 2023-11-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 80227-x
    ISSN 1879-1506 ; 0003-9969
    ISSN (online) 1879-1506
    ISSN 0003-9969
    DOI 10.1016/j.archoralbio.2023.105840
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Detection of anti-SARS-CoV-2 salivary antibodies in vaccinated adults.

    Castro, Vitória Tavares / Chardin, Hélène / Amorim Dos Santos, Juliana / Barra, Gustavo Barcelos / Castilho, Grazielle Rodrigues / Souza, Paula Monteiro / Magalhães, Pérola de Oliveira / Acevedo, Ana Carolina / Guerra, Eliete Neves Silva

    Frontiers in immunology

    2023  Volume 14, Page(s) 1296603

    Abstract: ... The study included 13 not vaccinated and 35 vaccinated participants with two doses of CoronaVac (Sinovac ... Butantan) vaccine who subsequently received BNT162b2 (Pfizer-BioNTech) vaccine as a booster dose ... detected in 34/35 samples after second dose and in 35/35 samples one and five months after the booster dose ...

    Abstract Since the introduction of efficient anti-SARS-CoV-2 vaccines, the detection of antibodies becomes useful for immunological monitoring and COVID-19 control. Therefore, this longitudinal study aimed to evaluate the detection of SARS-CoV-2 antibodies in the serum and saliva of COVID-19-vaccinated adults. The study included 13 not vaccinated and 35 vaccinated participants with two doses of CoronaVac (Sinovac/Butantan) vaccine who subsequently received BNT162b2 (Pfizer-BioNTech) vaccine as a booster dose. Vaccinated participants donated saliva and serum in three different time points. Enzyme-linked immunosorbent assay was used for antibody detection. In our results, the serum neutralizing antibodies (NAb) were detected in 34/35 samples after second dose and in 35/35 samples one and five months after the booster dose. In saliva, NAb were detected in 30/35 samples after second dose and in 35/35 of samples one and five months after the booster dose. IgA was detected in 19/34 saliva samples after second dose, in 18/35 one month after the booster and in 30/35 five months after. IgG in saliva was detected in 1/34 samples after second dose, 33/35 samples one month after the booster dose and in 20/35 five months after. A strong correlation was found between IgG and neutralizing activity in saliva, and salivary IgA would be a sign of recent exposure to the virus. In conclusion, saliva can be suitable for monitoring antibodies anti-SARS-CoV-2 after vaccination. Heterologous vaccination contributed to increase anti-SARS-CoV-2 antibodies in the Brazilian health context. Complementary studies with large groups are mandatory to conclude the interest in following mucosal immunity.
    MeSH term(s) Adult ; Humans ; BNT162 Vaccine ; Longitudinal Studies ; COVID-19/prevention & control ; SARS-CoV-2 ; Antibodies, Viral ; Antibodies, Neutralizing ; Immunoglobulin A ; Immunoglobulin G
    Chemical Substances sinovac COVID-19 vaccine ; BNT162 Vaccine ; Antibodies, Viral ; Antibodies, Neutralizing ; Immunoglobulin A ; Immunoglobulin G
    Language English
    Publishing date 2023-11-07
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2023.1296603
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Saliva is suitable for SARS-CoV-2 antibodies detection after vaccination: A rapid systematic review.

    Guerra, Eliete Neves Silva / de Castro, Vitória Tavares / Amorim Dos Santos, Juliana / Acevedo, Ana Carolina / Chardin, Hélène

    Frontiers in immunology

    2022  Volume 13, Page(s) 1006040

    Abstract: Since the introduction of efficient vaccines anti-SARS-CoV-2, antibody quantification becomes increasingly useful for immunological monitoring and COVID-19 control. In several situations, saliva samples may be an alternative to the serological test. Thus, ...

    Abstract Since the introduction of efficient vaccines anti-SARS-CoV-2, antibody quantification becomes increasingly useful for immunological monitoring and COVID-19 control. In several situations, saliva samples may be an alternative to the serological test. Thus, this rapid systematic review aimed to evaluate if saliva is suitable for SARS-CoV-2 detection after vaccination. For this purpose, search strategies were applied at EMBASE, PubMed, and Web of Science. Studies were selected by two reviewers in a two-phase process. After selection, 15 studies were eligible and included in data synthesis. In total, salivary samples of approximately 1,080 vaccinated and/or convalescent individuals were analyzed. The applied vaccines were mostly mRNA-based (BioNTech 162b2 mRNA/Pfizer and Spikevax mRNA-1273/Moderna), but recombinant viral-vectored vaccines (Ad26. COV2. S Janssen - Johnson & Johnson and Vaxzevria/Oxford AstraZeneca) were also included. Different techniques were applied for saliva evaluation, such as ELISA assay, Multiplex immunoassay, flow cytometry, neutralizing and electrochemical assays. Although antibody titers are lower in saliva than in serum, the results showed that saliva is suitable for antibody detection. The mean of reported correlations for titers in saliva and serum/plasma were moderate for IgG (0.55, 95% CI 0.38-9.73), and weak for IgA (0.28, 95% CI 0.12-0.44). Additionally, six out of nine studies reported numerical titers for immunoglobulins detection, from which the level in saliva reached their reference value in four (66%). IgG but not IgA are frequently presented in saliva from vaccinated anti-COVID-19. Four studies reported lower IgA salivary titers in vaccinated compared to previously infected individuals, otherwise, two reported higher titers of IgA in vaccinated. Concerning IgG, two studies reported high antibody titers in the saliva of vaccinated individuals compared to those previously infected and one presented similar results for vaccinated and infected. The detection of antibodies anti-SARS-CoV-2 in the saliva is available, which suggests this type of sample is a suitable alternative for monitoring the population. Thus, the results also pointed out the possible lack of mucosal immunity induction after anti-SARS-CoV-2 vaccination. It highlights the importance of new vaccination strategies also focused on mucosal alternatives directly on primary routes of SARS-CoV-2 entrance.
    Systematic review registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022336968, identifier CRD42022336968.
    MeSH term(s) Antibodies, Viral ; COVID-19/diagnosis ; COVID-19/prevention & control ; Humans ; Immunoglobulin G ; RNA, Messenger ; SARS-CoV-2 ; Saliva ; Vaccination ; Viral Vaccines
    Chemical Substances Antibodies, Viral ; Immunoglobulin G ; RNA, Messenger ; Viral Vaccines
    Language English
    Publishing date 2022-09-20
    Publishing country Switzerland
    Document type Systematic Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2022.1006040
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Critical appraisal tools used in systematic reviews of in vitro cell culture studies: A methodological study.

    Paiva Barbosa, Victor / Bastos Silveira, Bruna / Amorim Dos Santos, Juliana / Monteiro, Mylene Martins / Coletta, Ricardo D / De Luca Canto, Graziela / Stefani, Cristine Miron / Guerra, Eliete Neves Silva

    Research synthesis methods

    2023  Volume 14, Issue 6, Page(s) 776–793

    Abstract: Systematic reviews (SRs) of preclinical studies are marked with poor methodological quality. In vitro studies lack assessment tools to improve the quality of preclinical research. This methodological study aimed to identify, collect, and analyze SRs ... ...

    Abstract Systematic reviews (SRs) of preclinical studies are marked with poor methodological quality. In vitro studies lack assessment tools to improve the quality of preclinical research. This methodological study aimed to identify, collect, and analyze SRs based on cell culture studies to highlight the current appraisal tools utilized to support the development of a validated critical appraisal tool for cell culture in vitro research. SRs, scoping reviews, and meta-analyses that included cell culture studies and used any type of critical appraisal tool were included. Electronic search, study selection, data collection and methodological quality (MQ) assessment tool were realized. Further, statistical analyses regarding possible associations and correlations between MQ and collected data were performed. After the screening process, 82 studies remained for subsequent analysis. A total of 32 different appraisal tools were identified. Approximately 60% of studies adopted pre-structured tools not designed for cell culture studies. The most frequent instruments were SYRCLE (n = 14), OHAT (n = 9), Cochrane Collaboration's tool (n = 7), GRADE (n = 6), CONSORT (n = 5), and ToxRTool (n = 5). The studies were divided into subgroups to perform statistical analyses. A significant association (OR = 5.00, 95% CI = 1.54-16.20, p = 0.008) was found between low MQ and chronic degenerative disorders as topic of SR. Several challenges in collecting information from the included studies led to some modifications related to the previously registered protocol. These results may serve as a basis for further development of a critical appraisal tool for cell culture studies capable of capturing all the essential factors related to preclinical research, therefore enhancing the practice of evidence-based.
    MeSH term(s) Systematic Reviews as Topic ; Research Design ; Data Collection ; Cell Culture Techniques
    Language English
    Publishing date 2023-07-18
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2548499-0
    ISSN 1759-2887 ; 1759-2879
    ISSN (online) 1759-2887
    ISSN 1759-2879
    DOI 10.1002/jrsm.1657
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Herpes, Syphilis, and Human Immunodeficiency Virus Coinfection Among Transgender Women in Central Brazil.

    Diniz E Silva, Bruno Vinícius / Burgo Godoi Alves, Juliana / de Oliveira, Brunna Rodrigues / Santos Sousa, Ana Livia / Margarida, Mykaella Cristina Araújo / Dos Santos, Paulie Marcelly Ribeiro / de Oliveira Bonfim, Flávia Freitas / de Paula, Vanessa Salete / Villar, Livia Melo / Caetano, Karla Antonieta Amorim / Teles, Sheila Araújo / Carneiro, Megmar Aparecida Dos Santos

    Sexually transmitted diseases

    2022  Volume 50, Issue 1, Page(s) 45–49

    MeSH term(s) Female ; Humans ; HIV ; Syphilis/epidemiology ; Coinfection/epidemiology ; Brazil/epidemiology
    Language English
    Publishing date 2022-09-30
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 435191-5
    ISSN 1537-4521 ; 0148-5717
    ISSN (online) 1537-4521
    ISSN 0148-5717
    DOI 10.1097/OLQ.0000000000001720
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: Antimicrobial and anti-inflammatory effects of

    Diniz, Roseana Muniz / Fernandes, Tatiany Gomes Ferreira / Mendonça, Juliana Silva Pereira / Silva, Lucas Dos Santos / Saminez, Warlison Felipe de Silva / de Oliveira, Patrícia Vieira / Amorim, Erika Alves Da Fonseca / Figueiredo, Cristiane Santos Silva E Silva / Bezerra Filho, Clovis Macêdo / Correia, Maria Tereza Dos Santos / da Silva, Márcia Vanusa / de Sá Sousa, Joicy Cortez / Zagmignan, Adrielle / Nascimento da Silva, Luís Cláudio

    Frontiers in pharmacology

    2022  Volume 13, Page(s) 999131

    Abstract: ... Eugenia ... ...

    Abstract Eugenia brejoensis
    Language English
    Publishing date 2022-10-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587355-6
    ISSN 1663-9812
    ISSN 1663-9812
    DOI 10.3389/fphar.2022.999131
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Getting knowledge to provide care: prevalence and factors associated with Sexually Transmitted Infections in immigrants from Goiás.

    Silva, Carla de Almeida / Silva, Grazielle Rosa da Costa / Martins, Thaynara Lorrane Silva / Moura, Winny Éveny Alves / Gomes, Davi Oliveira / Bandeira, Gabriela Nolasco / Carneiro, Megmar Aparecida Dos Santos / Gonzalez, Roxana Isabel Cardozo / Pacheco, Leonora Rezende / Zanchetta, Margareth Santos / Lima, Juliana de Oliveira Roque E / Teles, Sheila Araujo / Caetano, Karlla Antonieta Amorim

    Revista da Escola de Enfermagem da U S P

    2024  Volume 57, Issue spe, Page(s) e20230034

    Abstract: Objective: To estimate the prevalence of Sexually Transmitted Infections (STIs) in immigrants and refugees living in the metropolitan region of Goiânia, Goiás.: Method: This is a cross-sectional and analytical study. Data collection was carried out ... ...

    Abstract Objective: To estimate the prevalence of Sexually Transmitted Infections (STIs) in immigrants and refugees living in the metropolitan region of Goiânia, Goiás.
    Method: This is a cross-sectional and analytical study. Data collection was carried out from July 2019 to January 2020 and 308 immigrants and refugees were included in the sample. All were underwent face-to-face interviews and were tested for HIV, Syphilis, and Hepatitis B, using rapid tests.
    Results: The general prevalence for any of the STIs investigated was 8.8% (95%CI 6.0% - 12.3%), being 5.8% (95%CI 3.6% - 8.9%) for Hepatitis B, 2.3% for Syphilis (95%CI 1.00% - 4.4%) and 0.7% for HIV (95%CI 0.1% - 2.1%). Multiple analysis, using logistic regression, showed that the variables male gender (OR = 2.7) and length of time living in Brazil (OR = 2.6) were significantly associated with STIs (p < 0.05).
    Conclusion: The results of this study suggest that STIs are a health problem in immigrants/refugees, which appear to be enhanced with the length of migration in the country. Public policies that guarantee health care for this population shall be considered.
    MeSH term(s) Male ; Humans ; Syphilis/epidemiology ; Brazil/epidemiology ; Cross-Sectional Studies ; Prevalence ; Sexually Transmitted Diseases/epidemiology ; Hepatitis B ; Emigrants and Immigrants ; HIV Infections/epidemiology
    Language Portuguese
    Publishing date 2024-01-08
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 2411320-7
    ISSN 1980-220X ; 1980-220X
    ISSN (online) 1980-220X
    ISSN 1980-220X
    DOI 10.1590/1980-220X-REEUSP-2023-0034en
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top