Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 44
Filtrar
1.
Artículo en Inglés | MEDLINE | ID: mdl-39259702

RESUMEN

OBJECTIVES: We report, for the first time, the distribution of four no-function NAT2 single nucleotide polymorphisms and inferred NAT2 acetylator phenotypes in three indigenous groups (Munduruku, Paiter-Suruí, and Yanomami), living in reservation areas in the Brazilian Amazon. METHODS: Two hundred and seventy-six participants from three indigenous groups (92 for each group) were included and genotyped for four NAT2 polymorphisms (rs1801279, rs1801280, rs1799930, and rs1799931) by the TaqMan system. Minor Allele Frequency (MAF) was determined and NAT2 acetylator phenotypes were inferred. RESULTS: NAT2 rs1801279G>A was absent in all cohorts; rs1799930G>A was absent in Yanomami and rare (MAF 0.016) in Munduruku and Paiter-Suruí; MAF of rs1801280T>C ranged five-fold (0.092-0.433), and MAF of rs1799931G>A varied between 0.179 and 0.283, among the three groups. The distribution of NAT2 phenotypes differed significantly across cohorts; the prevalence of the slow acetylator phenotype ranged from 16.3% in Yanomami to 33.3% in Munduruku to 48.9% in Paiter-Suruí. This three-fold range of variation is of major clinical relevance because the NAT2 slow phenotype is associated with higher risk of hepatotoxicity with antituberculosis chemotherapy and high incidence rates of tuberculosis and burden of latent infection among Munduruku, Paiter-Surui, and Yanomami peoples. According to the frequency of the NAT2 slow acetylator phenotype, the estimated number of individuals needed to be genotyped to prevent one additional event of hepatotoxicity range from 31 (Munduruku) to 39 (Paiter-Surui) and to 67 (Yanomami). CONCLUSION: The rs1801279 polymorphism was not found in any of the cohorts, while the MAF of the other polymorphisms showed significant variation between the cohorts. The difference in the prevalence of the NAT2 slow acetylator phenotype, which is linked to isoniazid-induced hepatotoxicity, was observed in the different study cohorts.

2.
Antioxidants (Basel) ; 13(5)2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38790664

RESUMEN

Olive pomace is an agro-industrial waste product generated from the olive oil industry and constituted by bioactive compounds with potential applications in several industrial sectors. The purpose of this work was to evaluate the effects of electron beam (e-beam) radiation on olive pomace, specifically on phenolic compounds (by HPLC-DAD-ESI/MS) and the bioactive properties (antioxidant, antiproliferative, and antimicrobial activities) of crude olive pomace (COP) and extracted olive pomace (EOP) extracts. The amount of total flavonoid content and the reducing power of COP extracts were higher than those obtained for EOP extracts. The results suggested that e-beam radiation at 6 kGy increased both total phenolic and total flavonoid contents as well as the reducing power of COP extracts, due to the higher extractability (>2.5-fold) of phenolic compounds from these samples, while decreasing the scavenging activity of extracts. The extracts of both olive pomaces showed antibacterial potential, and COP extracts at 400 µg/mL also presented antiproliferative activity against A549, Caco-2, 293T, and RAW264.7 cell lines, with both properties preserved with the e-beam treatment. All in all, e-beam radiation at 6 kGy appears to be a promising technology to valorize the pollutant wastes of the olive oil industry through enhancing phenolic extractability and bioactive properties, and, furthermore, to contribute to the environmental and economical sustainability of the olive oil industry.

3.
PLoS One ; 19(5): e0302843, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38728270

RESUMEN

BACKGROUND: Sarcopenia, a subject of extensive research, has led to numerous clinical trials and systematic reviews (SR). These reviews aid healthcare professionals by summarizing results and conducting meta-analyses, enhancing reliability. However, the abundance of reviews complicates decision-making on sarcopenia management. To address this, SR of SR have emerged, consolidating data from various sources into comprehensive documents. OBJECTIVE: To assess the isolated impact of dietary interventions on sarcopenia's diagnostic criteria for older individuals. METHODS: A study protocol for a SR of SR, following Cochrane and PRISMA recommendations. The search strategy includes the MeSH 'sarcopenia' and its subheadings; 'aged' and its subheadings; 'nutrition' and its subheadings; and filter 'systematic review', performed at main databases. Selected studies must include older adults, submitted to nutritional interventions compared to control groups. Quantitative analyses will use inverse variance statistic method (random effects); the effect measures mean difference. Heterogeneity measured with Q-Test. RESULTS: The results of this SR of SR may provide valuable information about the sarcopenia treatment, deepening the knowledge about. CONCLUSION: This protocol is reproducible, requires low cost and personnel, and may allow a higher understanding on sarcopenia treatment and management on older people.


Asunto(s)
Metaanálisis como Asunto , Sarcopenia , Revisiones Sistemáticas como Asunto , Humanos , Sarcopenia/dietoterapia , Sarcopenia/terapia , Sarcopenia/diagnóstico , Anciano , Estado Nutricional
4.
PLoS One ; 19(3): e0300684, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38512858

RESUMEN

Brazilian coastal archaeology is renowned for its numerous and large shellmounds (sambaquis), which had been continuously occupied from at least 8000 to 1000 years cal BP. However, changes in their structure and material culture in the late Holocene have led to different hypotheses concerning their ecological and cultural changes. The archaeological site Galheta IV (ca. 1300 to 500 years cal BP) offers new insights into the complexity of the late coastal occupation in southern Brazil. Our attempt was to determine whether Galheta IV can be classified as a sambaqui site, or if it belongs to a Southern proto-Jê settlement. Here, we reassessed Galheta's collections and applied a multi-proxy approach using: new 14C dates, zooarchaeology, δ13C and δ15N isotopes in bulk collagen and 87Sr/86Srenamel isotopic ratios from eight human individuals, ceramics analysis, and FTIR. The results indicate an intense exploitation of marine resources, with an area designated for processing animals located at the opposite side of the funerary areas. Bone tools and specific species of animals were found as burial accompaniments. No evidence of human cremations was detected. 87Sr/86Sr results indicate that the eight human individuals always lived on the coast, and did not come from the inland. The pottery analysis confirms the association with Itararé-Taquara, but contrary to what was assumed by previous studies, the pottery seems related to other coastal sites, and not to the highlands. In light of these findings, we propose that Galheta IV can be considered a funerary mound resulting from long and continuous interactions between shellmound and Southern proto-Jê populations. This study not only enhances our understanding of the late coastal occupation dynamics in southern Brazil but also underscores its importance in reshaping current interpretations of shellmound cultural changes over time.


Asunto(s)
Arqueología , Isótopos de Estroncio , Humanos , Animales , Brasil , Arqueología/métodos
5.
Toxics ; 12(3)2024 Mar 20.
Artículo en Inglés | MEDLINE | ID: mdl-38535959

RESUMEN

Mercury (Hg) pollution is a global public health concern because of its adverse effects on the environment and health. Single-nucleotide polymorphisms (SNPs) have been associated with Hg levels and outcomes. The aim of this review was to describe the research and discuss the evidence on the genetic susceptibility of Hg-exposed individuals to the development of neurocognitive disorders. A systematic review was performed to identify the genes/SNPs associated with Hg toxicokinetics and that, therefore, affect neurological function in exposed populations. Observational and experimental studies were identified by screening three databases. Thirteen articles were included (quality score 82-100%) and 8124 individuals were evaluated. Hg exposure was mainly fish consumption (77%) and, in 31% of the studies, the Hg levels exceeded the reference limits. Genetic susceptibility to higher Hg levels and neurotoxicity risk in Hg poisoning were associated with eight (ALAD rs1800435, CYP3A4 rs2740574, CYP3A5 rs776746, CYP3A7 rs2257401, GSTP1 rs1695, MT1A rs8052394, MT1M rs2270836, and MT4 rs11643815) and three (MT1A rs8052394, MT1M rs2270837, and MT2A rs10636) SNPs, respectively, and rs8052394 was associated with both outcomes. The MT1A rs8052394 SNP may be used as a susceptibility biomarker to identify individuals at greater risk for higher Hg levels and the development of neurocognitive disorders in metal-exposed populations.

6.
Eur Spine J ; 33(2): 646-654, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37801129

RESUMEN

PURPOSE: Abnormal leptin bioavailability has play key roles in the etiology of adolescent idiopathic scoliosis (AIS). Both leptin and its receptor levels may be modulated by the presence of genetic polymorphisms. This study aimed to evaluate the role of polymorphisms in the leptin (LEP) and its main receptor (LEPR) genes in the AIS susceptibility in girls. METHODS: A retrospective case-control study was conducted with 189 AIS and 240 controls. LEP rs2167270 and LEPR rs2767485 polymorphisms were genotyped using a TaqMan validated assay. Associations were evaluated by odds ratios (OR) and 95% confidence intervals (CI). RESULTS: The AIS group showed a predominance of girls under 18 years old (n = 140, 74.1%), 148 (78.3%) had low or normal BMI, 111 (58.7%) had Cobb ≥ 45º and 130 (68.7%) were skeletally mature. Minor allele frequencies of rs2167270 and rs2767485 were 35.7% and 18.3%, for AIS and 35.6% and 25.4% for controls, respectively. LEPR rs2767485 T and TC + TT were associated with higher risk of AIS (OR = 1.53; 95% CI = 1.09-2.13 and OR = 1.84; 95% CI = 1.69-2.01, respectively), since CC genotype was only present in the control group. In addition, the LEP rs2167270 GA + AA was more frequent in low weight group (BMI ≤ 24.9) of girls with AIS. There was no significant association between LEP rs2167270 and AIS susceptibility, and LEPR rs2767485 and BMI. CONCLUSION: The LEPR rs2767485 was associated with the genetic susceptibility of AIS and LEP rs2167270 with low BMI. These data can contribute to the identification of genetic biomarkers to improve the diagnosis and treatment.


Asunto(s)
Leptina , Escoliosis , Femenino , Humanos , Adolescente , Masculino , Leptina/genética , Receptores de Leptina/genética , Estudios de Casos y Controles , Estudios Retrospectivos , Escoliosis/genética , Polimorfismo de Nucleótido Simple/genética
7.
Vaccine ; 42(3): 689-700, 2024 Jan 25.
Artículo en Inglés | MEDLINE | ID: mdl-38145911

RESUMEN

In an effort to develop efficient vaccine formulations, the use of ordered mesoporous silica (SBA-15) as an antigen carrier has been investigated. SBA-15 has required properties such as high surface area and pore volume, including narrow pore size distribution to protect antigens inside its matrix. This study aimed to examine the impact of solvent removal methods, specifically freeze-drying and evaporation on the intrinsic properties of an immunogenic complex. The immunogenic complexes, synthesized and incorporated with BSA, were characterized by various physicochemical techniques. Small Angle X-ray Scattering measurements revealed the characteristic reflections associated to pure SBA-15, indicating the preservation of the silica mesostructured following BSA incorporation and the formation of BSA aggregates within the macropore region. Nitrogen Adsorption Isotherm measurements demonstrated a decrease in surface area and pore volume for all samples, indicating that the BSA was incorporated into the SBA-15 matrix. Fluorescence spectroscopy evidenced that the tryptophan residues in BSA inside SBA-15 or in solution displayed similar spectra, showing the preservation of the aromatic residues' environment. The Circular Dichroism spectra of BSA in both conditions suggest the preservation of its native secondary structure after the encapsulation process. The immunogenic analysis with the detection of anti-BSA IgG did not give any significant difference between the non-dried, freeze-dried or evaporated groups. However, all groups containing BSA and SBA-15 showed results almost three times higher than the groups with pure BSA (control group). These facts indicate that none of the BSA incorporation methods interfered with the immunogenicity of the complex. In particular, the freeze-dried process is regularly used in the pharmaceutical industry, therefore its adequacy to produce immunogenic complexes was proved Furthermore, the results showed that SBA-15 increased the immunogenic activity of BSA.


Asunto(s)
Dióxido de Silicio , Vacunas , Dióxido de Silicio/química
8.
Vaccine, v. 42, n. 3, p. 689-700, jan. 2024
Artículo en Inglés | Sec. Est. Saúde SP, SESSP-IBPROD, Sec. Est. Saúde SP | ID: bud-5235

RESUMEN

In an effort to develop efficient vaccine formulations, the use of ordered mesoporous silica (SBA-15) as an antigen carrier has been investigated. SBA-15 has required properties such as high surface area and pore volume, including narrow pore size distribution to protect antigens inside its matrix. This study aimed to examine the impact of solvent removal methods, specifically freeze-drying and evaporation on the intrinsic properties of an immunogenic complex. The immunogenic complexes, synthesized and incorporated with BSA, were characterized by various physicochemical techniques. Small Angle X-ray Scattering measurements revealed the characteristic reflections associated to pure SBA-15, indicating the preservation of the silica mesostructured following BSA incorporation and the formation of BSA aggregates within the macropore region. Nitrogen Adsorption Isotherm measurements demonstrated a decrease in surface area and pore volume for all samples, indicating that the BSA was incorporated into the SBA-15 matrix. Fluorescence spectroscopy evidenced that the tryptophan residues in BSA inside SBA-15 or in solution displayed similar spectra, showing the preservation of the aromatic residues’ environment. The Circular Dichroism spectra of BSA in both conditions suggest the preservation of its native secondary structure after the encapsulation process. The immunogenic analysis with the detection of anti-BSA IgG did not give any significant difference between the non-dried, freeze-dried or evaporated groups. However, all groups containing BSA and SBA-15 showed results almost three times higher than the groups with pure BSA (control group). These facts indicate that none of the BSA incorporation methods interfered with the immunogenicity of the complex. In particular, the freeze-dried process is regularly used in the pharmaceutical industry, therefore its adequacy to produce immunogenic complexes was proved Furthermore, the results showed that SBA-15 increased the immunogenic activity of BSA.

9.
Hum Immunol ; 84(10): 561-566, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37468423

RESUMEN

Endometriosis presents a pro-inflammatory microenvironment influenced by cytokines, such as interleukin (IL)-8, which expression may be influenced by genetic polymorphisms. Therefore, we aimed to investigate the role of interleukin (IL)-8 rs4073 polymorphism in endometriosis' development and its related symptoms. A case-control study was conducted with 207 women with endometriosis and 193 healthy controls. Polymorphism was genotyped using a TaqMan validated assay. Associations were evaluated by binary logistic regression, using odds ratios (OR) and 95 % confidence intervals (CI), and P ≤ 0.05 was considered significant. Cases were younger (36 ± 6.8 versus 39 ± 8.4) and had lower body mass index (26.5 ± 5.3 versus 35.7 ± 6.3 Kg/m2) than controls (P < 0.001). Higher prevalence of symptoms and infertility was observed in cases, compared to controls (P < 0.001). Minor allele frequencies of IL-8 rs4073 (T) were 42.3 % and 39.9 % for cases and controls, respectively, and no associations were found between IL and 8 rs4073 polymorphism and endometriosis' prevalence or staging. However, the polymorphism was associated with chronic pelvic pain among cases (OR = 0.54; 95 %CI = 0.29-0.98). The IL-8 rs4073A > T polymorphism may contribute to lower IL-8 expression and, consequently, decrease endometriosis-related pelvic pain. These findings can support the early diagnosis of endometriosis' painful symptoms, preventing its complications, and allowing an individualized treatment.


Asunto(s)
Endometriosis , Femenino , Humanos , Estudios de Casos y Controles , Endometriosis/genética , Endometriosis/complicaciones , Endometriosis/epidemiología , Predisposición Genética a la Enfermedad , Interleucina-8/genética , Interleucinas/genética , Dolor Pélvico/genética , Dolor Pélvico/complicaciones , Polimorfismo Genético
10.
Nat Ecol Evol ; 7(8): 1315-1330, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37524799

RESUMEN

Sambaqui (shellmound) societies are among the most intriguing archaeological phenomena in pre-colonial South America, extending from approximately 8,000 to 1,000 years before present (yr BP) across 3,000 km on the Atlantic coast. However, little is known about their connection to early Holocene hunter-gatherers, how this may have contributed to different historical pathways and the processes through which late Holocene ceramists came to rule the coast shortly before European contact. To contribute to our understanding of the population history of indigenous societies on the eastern coast of South America, we produced genome-wide data from 34 ancient individuals as early as 10,000 yr BP from four different regions in Brazil. Early Holocene hunter-gatherers were found to lack shared genetic drift among themselves and with later populations from eastern South America, suggesting that they derived from a common radiation and did not contribute substantially to later coastal groups. Our analyses show genetic heterogeneity among contemporaneous Sambaqui groups from the southeastern and southern Brazilian coast, contrary to the similarity expressed in the archaeological record. The complex history of intercultural contact between inland horticulturists and coastal populations becomes genetically evident during the final horizon of Sambaqui societies, from around 2,200 yr BP, corroborating evidence of cultural change.


Asunto(s)
Arqueología , Evolución Cultural , Humanos , Brasil , Genómica
13.
Proc Natl Acad Sci U S A ; 119(43): e2109315119, 2022 10 25.
Artículo en Inglés | MEDLINE | ID: mdl-36252021

RESUMEN

The characterization of Neandertals' diets has mostly relied on nitrogen isotope analyses of bone and tooth collagen. However, few nitrogen isotope data have been recovered from bones or teeth from Iberia due to poor collagen preservation at Paleolithic sites in the region. Zinc isotopes have been shown to be a reliable method for reconstructing trophic levels in the absence of organic matter preservation. Here, we present the results of zinc (Zn), strontium (Sr), carbon (C), and oxygen (O) isotope and trace element ratio analysis measured in dental enamel on a Pleistocene food web in Gabasa, Spain, to characterize the diet and ecology of a Middle Paleolithic Neandertal individual. Based on the extremely low δ66Zn value observed in the Neandertal's tooth enamel, our results support the interpretation of Neandertals as carnivores as already suggested by δ15N isotope values of specimens from other regions. Further work could help identify if such isotopic peculiarities (lowest δ66Zn and highest δ15N of the food web) are due to a metabolic and/or dietary specificity of the Neandertals.


Asunto(s)
Carnívoros , Hombre de Neandertal , Diente , Oligoelementos , Animales , Carbono/análisis , Isótopos de Carbono/análisis , Colágeno , Esmalte Dental/química , Dieta , Isótopos de Nitrógeno/análisis , Oxígeno/análisis , España , Estroncio/análisis , Diente/química , Oligoelementos/análisis , Zinc/análisis , Isótopos de Zinc/análisis
14.
J Craniovertebr Junction Spine ; 13(3): 318-324, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36263348

RESUMEN

Background: Association of genetic polymorphisms in paired box 1 (PAX-1) gene can influence the development of adolescent idiopathic scoliosis (AIS). PAX-1 is mainly expressed in the region of the vertebral bodies and intervertebral discs, being important for the proper formation of spinal structures. Objectives: The objective of this study was to evaluate the association of polymorphisms in PAX-1 gene with the susceptibility of AIS. Settings and Design: This was an analytical observational case-control study. Materials and Methods: Samples of 59 AIS indicated for surgical treatment, and 119 controls, without spinal disease were genotyped for PAX-1 rs6137473 and rs169311 polymorphisms. Statistical Analysis: The association of the polymorphisms with AIS was evaluated by a multivariable logistic regression model, using odds ratios (OR) and 95% confidence intervals (CI). Results: According to Lenke's classification, 89.8% had Type I and 10.2% II curves. The mean value of the Cobb angle of the proximal thoracic curve was 30.8°, 58.7° thoracic, and 30.4° for the lumbar and on the bending films 14.6°, 40.7°, and 11°, respectively. Among the AIS group, there was a predominance of females (8.8:1). The PAX-1 rs169311 and rs6137473 polymorphisms were positively associated with developing the AIS (OR = 1.98; 95% CI = 1.2-3.3 and OR = 3.16; 95% CI = 1.4-7.3, respectively). The rs6137473 polymorphism was associated with the lumbar modifier B and C compared to A (OR = 2.52; 95% CI = 1.1-5.8). Conclusions: PAX-1 polymorphisms were associated with an increased risk of developing the AIS and with curve severity and can be used as a biomarker to map the risk of developing surgical-grade AIS, guiding the treatment of patients.

15.
Arq. ciências saúde UNIPAR ; 26(3): 1445-1452, set-dez. 2022.
Artículo en Francés | LILACS | ID: biblio-1414677

RESUMEN

dengue é uma doença febril aguda com etiologia viral típica e de evolução benigna que é grave quando se apresenta na forma hemorrágica. Sua transmissão ocorre pela picada do Aedes aegypti, em um ciclo humano-Aedes aegypti-humano. Sendo assim, o cuidado e a prevenção contra a dengue é uma prática que deve ser sempre incentivada, especialmente em áreas de risco, além de buscar incluir a população como partícipes nas ações de prevenção contra essa arbovirose. O artigo trata-se de um relato de experiência cujo objetivo é descrever a experiência desenvolvida e vivenciada pelos acadêmicos do curso de graduação em Medicina da UniFipMoc-Afya durante o projeto de extensão "Caminho Contra a Dengue" que ocorreu em maio de 2022 no Parque Municipal Cândido Canelas, localizado no bairro Canelas, Montes Claros ­ MG. As ações realizadas tinham caráter socioeducativo, tendo como objetivo reconhecer e demarcar os determinantes da dengue dos bairros Canelas e Antônio Canelas, para se realizar uma sensibilização da comunidade local sobre as medidas preventivas contra a proliferação da doença e, dessa forma, contribuir para a integralização da saúde dos moradores. As estratégias empregadas trouxeram a reflexão, a problematização da pauta e a valorização de uma mudança de comportamento visando à diminuição da transmissão da dengue no bairro Antônio Canelas e no Canelas. Logo, esse conjunto de experiências proporcionou a possibilidade de promover um avanço no cuidado e na prevenção da dengue, colocando a própria comunidade como precursora e responsável pelos atos que irão fornecer uma promoção da saúde e melhorias em suas vidas.


Dengue is an acute febrile illness with a typical viral etiology and a benign course that is severe when it presents in the hemorrhagic form. Its transmission occurs through the bite of Aedes aegypti, in a human-Aedes aegypti-human cycle. Therefore, care and prevention against dengue is a practice that should always be encouraged, especially in risk areas, in addition to seeking to include the population as participants in prevention actions against this arbovirus. The article is an experience report whose objective is to describe the experience developed and lived by the academics of the undergraduate course in Medicine at UniFipMoc-Afya during the extension project "Caminho Contra a Dengue" that took place in May 2022 at Parque Municipal Cândido Canelas, located in the Canelas neighborhood, Montes Claros - MG. The actions carried out had a socio-educational character, with the objective of recognizing and demarcating the determinants of dengue in the Canelas and Antônio Canelas neighborhoods, in order to raise the awareness of the local community about preventive measures against the proliferation of the disease and, in this way, contribute to the integralization of the population. residents' health. The strategies used and employed brought reflection, problematization of the agenda and the appreciation of a change in behavior aimed at reducing dengue transmission in the Antônio Canelas and Canelas neighborhoods. Therefore, this set of experiences provided the possibility of promoting progress in the care and prevention of dengue, placing the community itself as a precursor and responsible for the acts that will provide health promotion and improvements in their lives.


El dengue es una enfermedad febril aguda de etiología vírica típica y evolución benigna que es grave cuando se presenta en forma hemorrágica. Su transmisión se produce por la picadura de Aedes aegypti, en un ciclo humano-Aedes aegypti-humano. Así, el cuidado y la prevención contra el dengue es una práctica que siempre debe ser incentivada, especialmente en las zonas de riesgo, y buscar incluir a la población como partícipe de las acciones preventivas contra esta arbovirosis. El artículo es un relato de experiencia cuyo objetivo es describir la experiencia desarrollada y vivida por estudiantes de pregrado de medicina de la UniFipMoc-Afya durante el proyecto de extensión "Camino Contra el Dengue", que tuvo lugar en mayo de 2022 en el Parque Municipal Cândido Canelas, ubicado en Canelas, Montes Claros - MG. Las acciones realizadas tuvieron un carácter socioeducativo, con el objetivo de reconocer y demarcar los determinantes del dengue en los barrios Canelas y Antônio Canelas, a fin de sensibilizar a la comunidad local sobre las medidas preventivas contra la proliferación de la enfermedad y contribuir así a la integralización de la salud de los residentes. Las estrategias empleadas propiciaron la reflexión, la problematización del tema y la valorización de un cambio de comportamiento dirigido a reducir la transmisión del dengue en los barrios Antônio Canelas y Canelas. Así, este conjunto de experiencias proporcionó la posibilidad de promover un avance en la atención y prevención del dengue, colocando a la propia comunidad como precursora y responsable de actos que proporcionarán una promoción de la salud y mejoras en sus vidas.


Asunto(s)
Humanos , Masculino , Femenino , Universidades , Dengue/prevención & control , Proyectos , Población , Estudiantes de Medicina , Concienciación/ética , Salud Pública/educación , Aedes , Informe de Investigación , Promoción de la Salud
16.
Planta ; 256(4): 84, 2022 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-36114308

RESUMEN

MAIN CONCLUSION: This review highlights the most relevant and recent updated information available on the defense responses of selected hosts against Xanthomonas spp. Xanthomonas is one of the most important genera of Gram-negative phytopathogenic bacteria, severely affecting the productivity of economically important crops worldwide, colonizing either the vascular system or the mesophyll tissue of the host. Due to its rapid propagation, Xanthomonas poses an enormous challenge to farmers, because it is usually controlled using huge quantities of copper-based chemicals, adversely impacting the environment. Thus, developing new ways of preventing colonization by these bacteria has become essential. Advances in genomic and transcriptomic technologies have significantly elucidated at molecular level interactions between various crops and Xanthomonas species. Understanding how these hosts respond to the infection is crucial if we are to exploit potential approaches for improving crop breeding and cutting productivity losses. This review focuses on our current knowledge of the defense response mechanisms in agricultural crops after Xanthomonas infection. We describe the molecular basis of host-bacterium interactions over a broad spectrum with the aim of improving our fundamental understanding of which genes are involved and how they work in this interaction, providing information that can help to speed up plant breeding programs, namely using gene editing approaches.


Asunto(s)
Xanthomonas , Bacterias , Cobre , Productos Agrícolas/genética , Fitomejoramiento , Enfermedades de las Plantas/microbiología , Xanthomonas/fisiología
17.
Toxics ; 10(6)2022 Jun 09.
Artículo en Inglés | MEDLINE | ID: mdl-35736920

RESUMEN

According to the WHO, air quality affects around 40 million people, contributing to around 21,000 premature deaths per year. Severe respiratory diseases, such as asthma and chronic obstructive pulmonary disorder, can be promoted by air pollution, which has already been documented; this is one of the reasons why air quality is a very relevant factor for human health and well-being. Aerosols are an aggregation of solid or liquid particles dispersed in the air and can be found in the form of dust or fumes. Aerosols can be easily inhaled or absorbed by the skin, which can lead to adverse health effects according to their sizes that range from the nanometre to the millimetre scale. Based on the PRISMA methodology and using the Rayyan QCRI platform, it was possible to assess more than four hundred research articles. This systematic review study aimed to understand the impact of particles on pulmonary endothelial cells, namely particulate matter in different sizes, cigarette smoke, diesel exhaust particles and carbon black. The main conclusions were that particles induce multiple health effects on endothelial cells, namely endothelial dysfunction, which can lead to apoptosis and necrosis, and it may also cause necroptosis in lung structure.

18.
Rev. bras. ciênc. mov ; 30(1): [1-21], jan.-mar. 2022. tab, ilus
Artículo en Portugués | LILACS | ID: biblio-1373465

RESUMEN

O objetivo do estudo foi construir e validar o Instrumento de Observação para Metodologias Ativas (IO-MA) no ensino dos Jogos Esportivos Coletivos (JEC). Para tanto, foram avaliadas as dimensões Aprendizagem Significativa (AS), Envolvimento Ativo (EA) e Cooperação Social (CS). O desenvolvimento dos indicadores de cada dimensão ocorreu por meio de consulta na literatura especializada. O processo de validação de conteúdo do instrumento foi realizado por onze especialistas doutores com experiência na área da Educação Física. A coleta dos dados ocorreu a partir da análise em vídeo de uma aula de um professor expert. A análise da fidedignidade inter-avaliadores foi realizada por sete avaliadores doutores e ampla experiência na área da Educação Física. Os dados foram analisados aplicando-se o coeficiente V de Aiken para a validação de conteúdo e o índice de concordância Kappa para fidedignidade intra e inter-avaliadores. Os resultados revelaram que o IO-MA obteve altos índices de validade de conteúdo tanto para a avaliação do instrumento global (V=0,88), quanto para as dimensões clareza de linguagem (V=0,84), pertinência prática (V=0,90) e relevância teórica (V=0,91). O IO-MA também apresentou índices considerados quase-perfeitos de fidedignidade intra (Kappa=1,00) e inter-avaliadores (Kappa=1,00). A versão final do IO-MA foi composta por 15 itens/comportamentos distribuídos em três dimensões (AS=6, EA=5, CS=4). Conclui-se que o IO-MA é um instrumento acessível e aplicável para a observação do comportamento de professores e futuros professores no que diz respeito ao uso de metodologias ativas para o ensino dos JEC no contexto brasileiro. (AU)


The aim of the study was to build and validate the Instrument of Observation for Active Methodologies (IO-MA) in the teaching of Collective Sports Games (JEC). Therefore, the dimensions of Meaningful Learning (ML), Active Involvement (AI) and Social Cooperation (SC) were evaluated. The development of indicators for each dimension took place through consultation in the specialized literature. The instrument content validation process was carried out by eleven doctorate-degree specialists with extensive experience in the field of Physical Education. Data collection occurred from video analysis of a class by an expert teacher. Subsequently, the inter-evaluator reliability analysis was carried out by seven doctorate-degree evaluators with extensive experience in the field of Physical Education. Data were analyzed by applying the Aiken V coefficient for content validation and the Kappa agreement index for intra and inter-rater interval reliability. The results showed that the IO-MA obtained high content validity rates both for the instrument in general (V=0,88), and for the dimensions clarity of language (V=0,84), practical relevance (V=0,90), theoretical relevance (V=0,91). The IO-MA also showed near-perfect indices of intra- (Kappa=1,00) and inter-rater (Kappa=1,00) reliability. The final version of the IO-MA was composed of 15 items/behaviors distributed in three dimensions (AS=6, EA=5, CS=4). It is concluded that the IO-MA is an accessible and applicable instrument for the observation of the behavior of teachers and future teachers regarding the use of active methodologies for teaching team sports games in the Brazilian context. (AU)


Asunto(s)
Humanos , Psicometría , Enseñanza , Metodología como un Tema , Juegos Recreacionales , Educación y Entrenamiento Físico , Deportes , Ejercicio Físico , Estudio de Validación , Docentes , Deportes de Equipo , Aprendizaje
19.
Plant Genome ; 14(3): e20117, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34296827

RESUMEN

The genus Passiflora comprises a large group of plants popularly known as passionfruit, much appreciated for their exotic flowers and edible fruits. The species (∼500) are morphologically variable (e.g., growth habit, size, and color of flowers) and are adapted to distinct tropical ecosystems. In this study, we generated the genome of the wild diploid species Passiflora organensis Gardner by adopting a hybrid assembly approach. Passiflora organensis has a small genome of 259 Mbp and a heterozygosity rate of 81%, consistent with its reproductive system. Most of the genome sequences could be integrated into its chromosomes with cytogenomic markers (satellite DNA) as references. The repeated sequences accounted for 58.55% of the total DNA analyzed, and the Tekay lineage was the prevalent retrotransposon. In total, 25,327 coding genes were predicted. Passiflora organensis retains 5,609 singletons and 15,671 gene families. We focused on the genes potentially involved in the locus determining self-incompatibility and the MADS-box gene family, allowing us to infer expansions and contractions within specific subfamilies. Finally, we recovered the organellar DNA. Structural rearrangements and two mitoviruses, besides relics of other mobile elements, were found in the chloroplast and mt-DNA molecules, respectively. This study presents the first draft genome assembly of a wild Passiflora species, providing a valuable sequence resource for genomic and evolutionary studies on the genus, and support for breeding cropped passionfruit species.


Asunto(s)
Passiflora , Diploidia , Ecosistema , Passiflora/genética , Fitomejoramiento , Retroelementos
20.
Exp Mol Pathol ; 119: 104616, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33535080

RESUMEN

OBJECTIVE: DROSHA and DICER1 enzymes participate in the main stages of microRNA synthesis. Polymorphisms can influence mRNAs stability and genes expression, and hence affect the binding of miRNAs. Thus, the present study evaluated the association of DROSHA and DICER1 polymorphisms in the development of endometriosis and other diseases. METHODS: A total of 240 endometriosis cases and 242 controls were genotyped for the DROSHA rs10719 G > A and DICER1 rs3742330 A > G polymorphisms using the TaqMan system. The association between polymorphisms and endometriosis was estimated by binary logistic regression. A literature review was also performed including all published articles (PubMed database) until December 2020, regarding the association of the studied polymorphisms and different diseases. RESULTS: DICER1 rs3742330GG was only found in endometriosis cases (2.1%) and deep infiltrative endometriosis (DIE) (2.5%). The DICER1 rs3742330GG genotype was significantly associated with endometriosis (P < 0.05), suggesting a tendency to present an increased risk for disease. DROSHA rs10719A and DICER1 rs3742330G allele frequencies varied among populations (6%-79% and 10.2%-55.1%, respectively). In the Brazilian population, the frequencies of these alleles were 42.3% and 7.3%, respectively. Both polymorphisms were risk factors for nonsyndromic orofacial clefts, tuberculosis, stroke ischemia and mortality after stroke, recurrent idiopathic pregnancy loss, and some types of cancer. Moreover, the DICER1 rs3742330 polymorphism was a protective factor for precancerous cervical lesions, different types of cancer and tuberculosis. CONCLUSIONS: The results suggest that only the DICER1 rs3742330 A > G polymorphism may be associated with susceptibility to endometriosis. The frequencies of both polymorphisms were significantly different among populations, and there were discrepancies in the risk associations with the development of diseases.


Asunto(s)
ARN Helicasas DEAD-box/genética , Endometriosis/genética , Predisposición Genética a la Enfermedad , Polimorfismo de Nucleótido Simple/genética , Ribonucleasa III/genética , Adulto , Alelos , Estudios de Casos y Controles , Femenino , Frecuencia de los Genes/genética , Humanos
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA