Green tech soil analysis: a comparison of potentially toxic element contents among urban, agricultural, and gold mining areas in the Eastern Brazilian Amazon.

Artisanal gold mining can lead to soil contamination with potentially toxic elements (PTEs), necessitating soil quality monitoring due to environmental and human health risks. However, determining PTE levels through acid digestion is time-consuming, generates chemical waste, and requires significant resources. As an alternative, portable X-ray fluorescence (pXRF) offers a faster, more cost-effective, and sustainable analysis. This study compared total As, Ba, Cr, Cu, Fe, Mn, Ni, Pb, Sr, Ti, V, and Zn obtained from pXRF with their pseudo-total contents obtained through acid digestion (USEPA method 3051A) in areas influenced by artisanal gold mining in the Eastern Amazon, Brazil. pXRF data and machine learning algorithms were used to predict extractable Cu, Fe, Mn, and Zn. Linear regression models were fitted to compare the two methods, and random forest and support vector machine techniques were used to predict extractable contents. The best regression model fits for the pseudo-total PTE contents were those for Cu, Fe, Mn and Pb in agricultural areas (R2 > 0.80); Fe and Mn in gold mining residue (R2 > 0.70); and Ba, Cu and Mn in urban areas (R2 > 0.80). The best models for predicting the extractable PTE contents were those for Cu (R2 = 0.72; RMSE = 2.58 mg dm-3) and Zn (R2 = 0.71; RMSE = 1.44 mg dm-3) in agricultural areas and for Zn (R2 = 0.72; RMSE = 0.43 mg dm-3) in gold mining residue. The results demonstrated that pXRF can characterize and predict PTE contents in mining-impacted areas, offering a sustainable approach to soil quality analysis.

Supplementation of l-arginine in pregnant gilts affects the protein abundance of DNMT1 in 35-day fetuses.

Maternal nutrition is one of the main environmental factors regulating gene expression during fetal development through epigenetic modifications. Some nutrients, such as the amino acid l-arginine, are added to maternal diets to modulate gene expression, improve the reproductive performance of females, and enhance conceptus development. This study investigated the hypothesis that supplementation of pregnant gilts with l-arginine regulates gene expression in conceptuses through epigenetic mechanisms. For this, fetal programming phenotypic markers, the expression of key epigenetic genes, and the abundance of DNA methylation proteins (DNMT3A and DNMT1) were evaluated in 25- and 35-day conceptuses from gilts supplemented (ARG) or not (CON) with 1.0 % l-arginine during early gestation. At 25 days, there were no significant differences in phenotypic markers between CON and ARG embryos (P > 0.05). Similarly, no differences were found between CON and ARG fetuses at 35 days (P > 0.05). Maternal supplementation with l-arginine did not influence the expression of the evaluated key epigenetic genes in pig embryos or fetuses, nor DNMT3A protein abundance (P > 0.05); on the other hand, DNMT1 protein abundance was lower in ARG fetuses (P = 0.002). It is concluded that supplementation of l-arginine in pregnant gilts affects epigenetic mechanisms, such as DNA methylation, in 35-day fetuses through regulation of DNMT1 levels. Further studies using transcriptomic and proteomic analysis could reveal additional epigenetic modifications in embryos and fetuses following maternal supplementation with l-arginine.

Selection based on the Breeding Soundness Evaluation is associated with the improvement of the reproductive quality of young Nellore bulls.

Breeding soundness evaluation (BSE) is the best methodology to estimate the fertility potential of future bulls and performing indirect selection for their fertility. However, the outcome of the BSE is influenced by several factors, including genetics, environment, and BSE guidelines. Herein, in this retrospective study, our first aim was to characterize the reasons for failure in 46,566 BSE from 2-year-old beef Bos indicus bulls (Nellore) born from 1997 to 2018. Our second aim was to determine whether or not BSE was associated with reproductive potential improvement of the bulls over the years. Due to changes in the BSE criteria, we used the same dataset, but only bulls born from 2002 to 2018 were included resulting in 35,856 BSE. For the second aim, the effect of the year and farm were included in the model of the multivariate logistic regression. We also determined if the main reasons for BSE failure decreased over time. Bulls were classified as approved (satisfactory potential breeders and qualified for natural breeding service) and not approved (deferred and unsatisfactory potential breeders). The reasons for BSE failure in Nellore bulls were poor semen quality (53.1 %) and physical defects (46.9 %), with the main physical defect being testis abnormalities (19.7 %). The overall percentage of bulls approved each year was 87.1 %, with no improvement over the years of study. However, the percentage of approved bulls at the first BSE increased over the years (P < 0.05). This increase was evident by a reduction in the difference between the overall percentage of the bulls approved vs the percentage of bulls approved at the first BSE. Furthermore, there was an increase in the percentage of bulls classified as satisfactory potential breeders in the BSE and an evident decrease in the percentage of bulls qualified only for natural breeding service (P < 0.05). In addition, an increase of the scrotal circumference (SC) of the herd was found (P < 0.05). These results indicate the overall quality of the bulls improved over the years. To associate and identify the main sperm abnormalities, 3461 not approved bulls were clustered. The most frequent defects were strongly coiled tail spermatozoa, proximal droplets, and acrosomal defects. Overall, there was no change in the frequency of bulls not approved by the sperm morphology nor the frequency of the main sperm abnormalities over the years. Nevertheless, the frequency of the defects remained very low, implying they were controlled. Additionally, abnormalities in the testis decreased over the years and was associated with the increase in the SC of the herd and a decrease of culled bulls due to low SC. In conclusion, this study demonstrates that there is an association between implementation and use of BSE with improvements in the reproductive quality of future generation bulls.

Proteomic profile of seminal plasma from Pêga donkeys (Equus asinus) with high sperm motility and vigor: Implications for assisted reproduction.

Donkeys of the Pêga breed (Equus asinus) have been used for two centuries to produce breeding stock and create hybrids for labor and transport in southeast Brazil, and for exporting meat and milk to other countries. Furthermore, they are used in competitions, as they are docile and easy to handle. However, assisted reproduction success rates for frozen donkey semen are remarkably low, with no standardized method for cryopreserving sperm after removal of seminal plasma. This work aims to reveal the biological involvement of seminal plasma proteins from Pêga donkeys in aiding the development of assisted reproduction. This study was carried out with 14 ejaculates collected every eight days, throughout the breeding season, from three healthy fertile Pêga donkeys, with an average age of four years. After confirming the high freezability of fresh semen by evaluating quality parameters, the seminal plasma was separated by centrifugation and an aliquot from each collection was microfiltered and frozen. A label-free technique followed by LC-MS/MS analysis applied to pools of seminal plasma samples from each animal revealed 522 proteins in the proteomic profile, of which 49.8 % (260 proteins) are related to cellular energy transformation, and many proteins involved in reproduction (76), spermatogenesis (38), fertilization (29), among other biological process. By comparison with literature, Pêga donkeys share many proteins with donkeys of Dezhou breed that present great potential as fertility biomarkers. Our results showed proteins positively related to fertilization for different breeds of donkeys around the world, helping to enhance the assisted reproduction of Pêga donkeys.

Genetic parameters for oocytes and embryo production and their association with linear type traits in dairy Gyr Cattle.

In vitro embryo production is one of the main reproductive techniques used in dairy Gyr cattle. In addition, linear type measures are well characterized and have been used in dairy Gyr breed selection for the last 4 decades. The estimation of genetic parameters for the number of aspirated oocytes and in vitro-produced embryos associated with the linear type measures would support genetic progress for animal breeding programs toward embryo production. This study aimed to estimate genetic parameters for aspirated oocytes, embryo in vitro production, and linear type traits, exploring the association between them. The repeatability model was applied to 14,251 ovum pick-up events from 1,916 Gyr donors. A subset of 604 donors from the same group had their body measurements taken. Single- and 2-trait analyses were carried out using the BLUPF90 family programs. Heritability estimates of 0.38, 0.34, and 0.20 were obtained for total oocytes, viable oocytes, and embryos, respectively,-and the heritability of the linear type traits ranged from 0.22 to 0.40. High genetic correlations between total oocytes and viable oocytes (0.99), and between oocytes (total and viable) and embryos (0.83) were obtained. Low to high genetic (-0.07 to 0.92) and phenotypic (0.32 to 0.86) correlations were obtained between the linear type traits. Moreover, low phenotypic correlations (0.01 to 0.13) were observed for oocytes (total and viable) and embryos with the linear type traits, whereas low to moderate genetic correlations (0.07 to 0.42) were observed between the same traits, especially for ilium width (0.42), rump area (0.38), and hip height (0.33). Thus, selection for in vitro production is achievable in Gyr dairy cattle, and superior genetic progress is associated with the selection of oocytes (total and viable). Furthermore, the moderate genetic association between oocytes and embryos with linear type traits, especially ilium width suggests that progress on in vitro embryo production may be achieved by accessing these measurements.

Insights on the role of blocking agent on the properties of the lipase from Thermomyces lanuginosus immobilized on heterofunctional support for hydroesterification reactions.

Here, we report a study of the effect of the blocking agent on the properties of the lipase from Thermomyces lanuginosus (TLL) immobilized on a heterofunctional support (Purolite C18-ethylnediamina (EDA)- vinyl sulfone (VS)-TLL-blocking agent) in different reactions. The performance of the biocatalysts was compared to those immobilized on standard hydrophobic support (Purolite C18-TLL) and the commercial one (TLL-IM). The nature of the blocking agent (Cys, Gly and Asp) altered the enzyme features. TLL-IM always gave a comparatively worse performance, with its specificity for the oil being very different to the Purolite biocatalysts. Under optimized conditions, Purolite C18-TLL yielded 97 % of hydrolysis conversion after 4 h using a water/waste cooking soybean oil (WCSO) mass ratio of 4.3, biocatalyst load of 6.5 wt% and a temperature of 44.2 °C (without buffer or emulsification agent). In esterification reactions of the purified free fatty acids (FFAs) obtained from WCSO, the best TLL biocatalysts depended on the utilized alcohol: linear amyl alcohol was preferred by Purolite C18-TLL and Purolite C18-EDA-VS-TLL-Gly, while higher activity was achieved utilizing isoamyl alcohol as nucleophile by Purolite C18-EDA-VS-TLL-Cys, Purolite C18-EDA-VS-TLL-Asp and IM-TLL as catalysts. All the results indicate the influence of the blocking step on the final biocatalyst features.

Access to health care among female prisoners in a penitentiary in Ceará, Brazil. / Acesso e cuidado a saúde de mulheres privadas de liberdade na penitenciária cearense.

This study investigated access to health care among female prisoners in the state of Ceará, Brazil, and screened for common mental disorders. We conducted an analytical cross-sectional study in the only female prison in the state. Ninety detainees participated in the study. All participants were either pregnant or postpartum women or had one or more of the following health problems: hypertension, diabetes mellitus, tuberculosis, syphilis, hepatitis B, HIV/AIDS. The data were collected using a structured questionnaire. The findings reveal that access to health care was limited, violating the fundamental rights of the prisoners. Screening for diseases on admission to prison was limited, especially among non-pregnant women. Differences in health care were found between health conditions, with priority being given to pregnant and postpartum women. Most of the inmates (68.24%) were found to be at risk for common mental disorders (SRQ score > 7). A positive correlation was found between age and mental health problems (p = 0.0002). Despite legislation guaranteeing access to health care in prisons, the prison system is unprepared to meet the health needs of female prisoners with comorbidities and pregnant and puerperal women.

O estudo analisa o acesso ao cuidado em saúde de mulheres encarceradas no estado do Ceará, rastreando transtornos mentais comuns. Estudo analítico, transversal, de natureza quantitativa, desenvolvido na única penitenciária feminina do Ceará. Participaram 90 detentas, todas com alguma das seguintes questões de saúde: gestantes, puérperas, portadoras de hipertensão arterial sistêmica, diabetes mellitus, tuberculose, sífilis, hepatite B ou HIV/Aids. Os dados foram coletados por entrevista estruturada. Evidenciou-se acesso limitado à atenção à saúde das detentas, violando direitos básicos sob tutela do Estado. Foram constatadas limitações de exames de rastreamento de doenças nas presidiárias na ocasião de seu acesso ao cárcere, principalmente as que não se encontravam grávidas no momento do encarceramento. Houve diferenças entre as distintas condições de saúde analisadas, com prioridade da atenção às gestantes e puérperas. Entre as detentas, 68,24% apresentavam risco de transtornos mentais comuns (SRQ > 7). Houve correlação positiva entre idade e saúde mental (p = 0,0002). Embora exista legislação pertinente de garantia de acesso à saúde no cárcere, o sistema prisional está despreparado para atender às necessidades de portadoras de comorbidades, gestantes e puérperas.

Effect of novel lyophilized extenders on stallion post-thaw sperm motility.

The aim of this study was to assess the effect of lyophilized freezing extenders, which can be stored at room temperature, on stallion post-thaw sperm total motility (TM). Ejaculates of 28 stallions were frozen with four different extenders: two commercial freezing extenders offered worldwide and two novel lyophilized extenders (STAR and MX3), and two different cryopreservation protocols (CP1 with an equilibration period of 20 min. and CP2 with an equilibration period of 60 min.). The TM was assessed after thaw. Mean TM did not show significant differences between cryopreservation protocols within each extender. Mean TM was greater in samples diluted with STAR than in samples diluted with Botucrio (P ˂ 0.05), but no significant differences were observed for this variable between the other studied extenders. From all evaluated samples, twenty ejaculates showed the greatest TM when using the lyophilized extenders and the CP1. Thus, lyophilized extenders are a promising option for stallion sperm cryopreservation and have the advantage of storage and distribution at room temperature for at least one year.

Acesso e cuidado a saúde de mulheres privadas de liberdade na penitenciária cearense / Access to health care among female prisoners in a penitentiary in Ceará, Brazil

Resumo O estudo analisa o acesso ao cuidado em saúde de mulheres encarceradas no estado do Ceará, rastreando transtornos mentais comuns. Estudo analítico, transversal, de natureza quantitativa, desenvolvido na única penitenciária feminina do Ceará. Participaram 90 detentas, todas com alguma das seguintes questões de saúde: gestantes, puérperas, portadoras de hipertensão arterial sistêmica, diabetes mellitus, tuberculose, sífilis, hepatite B ou HIV/Aids. Os dados foram coletados por entrevista estruturada. Evidenciou-se acesso limitado à atenção à saúde das detentas, violando direitos básicos sob tutela do Estado. Foram constatadas limitações de exames de rastreamento de doenças nas presidiárias na ocasião de seu acesso ao cárcere, principalmente as que não se encontravam grávidas no momento do encarceramento. Houve diferenças entre as distintas condições de saúde analisadas, com prioridade da atenção às gestantes e puérperas. Entre as detentas, 68,24% apresentavam risco de transtornos mentais comuns (SRQ > 7). Houve correlação positiva entre idade e saúde mental (p = 0,0002). Embora exista legislação pertinente de garantia de acesso à saúde no cárcere, o sistema prisional está despreparado para atender às necessidades de portadoras de comorbidades, gestantes e puérperas.

Abstract This study investigated access to health care among female prisoners in the state of Ceará, Brazil, and screened for common mental disorders. We conducted an analytical cross-sectional study in the only female prison in the state. Ninety detainees participated in the study. All participants were either pregnant or postpartum women or had one or more of the following health problems: hypertension, diabetes mellitus, tuberculosis, syphilis, hepatitis B, HIV/AIDS. The data were collected using a structured questionnaire. The findings reveal that access to health care was limited, violating the fundamental rights of the prisoners. Screening for diseases on admission to prison was limited, especially among non-pregnant women. Differences in health care were found between health conditions, with priority being given to pregnant and postpartum women. Most of the inmates (68.24%) were found to be at risk for common mental disorders (SRQ score > 7). A positive correlation was found between age and mental health problems (p = 0.0002). Despite legislation guaranteeing access to health care in prisons, the prison system is unprepared to meet the health needs of female prisoners with comorbidities and pregnant and puerperal women.

Dataset of seminal plasma proteome of Nellore bulls with high and low percentage of abnormalities sperm.

OBJECTIVES: Bovine seminal plasma proteins perform several functions related to sperm function. Changes in the expression pattern or abundance of seminal proteins are related to changes in the fertilizing capacity of bulls. Considering the role of seminal plasma proteins in sperm function and animal reproduction, we investigated changes in the protein abundance profile in response to sperm morphological changes using a proteomic approach. DATADESCRIPTION: In our present investigation, we employed liquid chromatography coupled with mass spectrometry to elucidate the proteomic composition of seminal plasma obtained from Nellore bulls exhibiting varying percentages of sperm abnormalities. Following semen collection, seminal plasma was promptly isolated from sperm, and proteins were subsequently precipitated, enzymatically digested using porcine trypsin, and subjected to analysis utilizing the Acquity nano UHPLC System in conjunction with a mass spectrometer. This dataset encompasses a total of 297 proteins, marking the inaugural instance in which a comparative profile of seminal plasma proteins in young Nellore bulls, categorized by their sperm abnormality percentages, has been delineated using LC-MS/MS. The comprehensive nature of this dataset contributes pivotal proteomic insights, representing a noteworthy advancement in our understanding of the reproductive biology of the Nellore breed.

One sixth of Amazonian tree diversity is dependent on river floodplains.

Amazonia's floodplain system is the largest and most biodiverse on Earth. Although forests are crucial to the ecological integrity of floodplains, our understanding of their species composition and how this may differ from surrounding forest types is still far too limited, particularly as changing inundation regimes begin to reshape floodplain tree communities and the critical ecosystem functions they underpin. Here we address this gap by taking a spatially explicit look at Amazonia-wide patterns of tree-species turnover and ecological specialization of the region's floodplain forests. We show that the majority of Amazonian tree species can inhabit floodplains, and about a sixth of Amazonian tree diversity is ecologically specialized on floodplains. The degree of specialization in floodplain communities is driven by regional flood patterns, with the most compositionally differentiated floodplain forests located centrally within the fluvial network and contingent on the most extraordinary flood magnitudes regionally. Our results provide a spatially explicit view of ecological specialization of floodplain forest communities and expose the need for whole-basin hydrological integrity to protect the Amazon's tree diversity and its function.

Ensino remoto de educação em saúde na pós-graduação em saúde coletiva: possibilidades no contexto da pandemia de covid-19 / Remote teaching of health education in the postgraduate program in collective health: possibilities in the context of the covid-19 pandemic / Enseñanza a distância de educación para la salud en el posgrado en salud colectiva: posibilidades en el contexto de la pandemia del covid-19

O ensino remoto emergencial ocasionou mudanças no processo de ensino-aprendizagem, requisitando criatividade e incorporação de novas estratégias pedagógicas. Aqui, o objetivo é descrever a experiência de ensino-aprendizagem na disciplina educação em saúde, no contexto da pandemia de covid-19. Trata-se de um relato de experiência sobre o ensino remoto de educação em saúde no Programa de Pós-Graduação em Saúde Coletiva da Universidade Estadual do Ceará, no período letivo 2021.1. A disciplina foi ministrada por meio da plataforma Google Meet®, adotando-se estratégias ativas de ensino-aprendizagem. Os conteúdos mostraram--se relevantes. Ademais, a experiência promoveu a articulação teórico-prática, valorizou os saberes prévios dos pós-graduandos e estimulou a interatividade. Buscou-se superar o modelo tradicional de ensino, com vistas a propiciar autonomia e uma aprendizagem significativa. Os desafios encontrados e as possibilidades identificadas permitem a reflexão sobre a práxis docente, no que tange ao estímulo à participação e ao engajamento discente em ambiente virtual, além da incorporação de estratégias ativas de ensino, sobretudo no ensino remoto.

Emergency remote teaching caused changes in the teaching-learning process, requiring creativity and the incorporation of new pedagogical strategies. Here, the objective is to describe the teaching-learning experience in the health education discipline, in the context of the covid-19 pandemic. This is an experience report on remote teaching of health education in the postgraduate program in public health, at the Ceará State University, Brazil, in the 2021.1 academic period. The classes were given using the Google Meet® platform, adopting active teaching-learning strategies. The contents proved to be relevant. Moreover, the experience promoted theoretical-practical articulation, valued the prior knowledge of the postgraduate students and encouraged interactivity. We sought to overcome the traditional teaching model, in order to provide autonomy and a meaningful learning. The challenges experienced and the possibilities identified allow reflection on teaching practice in terms of encouraging student participation and engagement in a virtual environment, in addition to the incorporation of active teaching strategies in especially remote teaching.

La educación remota de emergencia provocó cambios en el proceso de enseñanza-aprendizaje, requiriendo creatividad y la incorporación de nuevas estrategias pedagógicas. El objetivo aquí es describir la experiencia de enseñanza-aprendizaje en la disciplina educación para la salud, en el contexto de la pandemia covid-19. Se trata de un relato de experiencia sobre la enseñanza remota de educación para la salud en el programa de posgrado en Salud Pública, de la Universidad Estadual de Ceará, en el período académico 2021.1. El curso se impartió utilizando la plataforma Google Meet®, adoptando estrategias activas de enseñanza-aprendi-zaje. Los contenidos han demonstrado ser relevantes. Además, la experiencia fomentó la articulación teó-rico-práctica, valoró los conocimientos previos de los estudiantes de posgrado y impulsó la interactividad. Buscamos superar el modelo de enseñanza tradicional, con el propósito de proporcionar autonomía y un aprendizaje significativo. Los desafíos enfrentados y las posibilidades identificadas permiten reflexionar sobre la práctica docente, en relación a incentivar la participación y el compromiso de los estudiantes en un ambiente virtual, además de la incorporación de estrategias activas en la enseñanza remota.

Age shock index as an early predictor of cardiovascular death in acute coronary syndrome patients.

BACKGROUND: The shock index (SI), reflecting heart rate (HR) to SBP ratio, is established for predicting adverse outcomes in acute coronary syndrome (ACS) patients. Exploring the age shock index (ASI), obtained by multiplying SI with age, could offer further insights into ACS prognosis. OBJECTIVES: Assess ASI's effectiveness in predicting in-hospital death in individuals with ACS. METHODS: This study encompassed patients with acute myocardial infarction, drawn from a national registry spanning October 2010 to January 2022. The optimal ASI threshold was established using receiver operating characteristic (ROC) curve analysis. The primary outcome was in-hospital mortality. RESULTS: A total of 27 312 patients were enrolled, exhibiting a mean age of 66 ±â€…13 years, with 72.3% being male and 47.5% having ST-elevation myocardial infarction. ROC analysis yielded an area under the curve (AUC) of 0.80, identifying the optimal ASI cutoff as 44. Multivariate regression analysis, adjusting for potential confounders, established ASI ≥ 44 as an independent predictor of in-hospital death [hazard ratio: 3.09, 95% confidence interval: 2.56-3.71, P  < 0.001]. Furthermore, ASI emerged as a notably superior predictor of in-hospital death compared to the SI (AUC ASI  = 0.80 vs. AUC SI  = 0.72, P  < 0.0001), though it did not outperform the Global Registry of Acute Coronary Events (GRACE) score (AUC ASI  = 0.80 vs. AUC GRACE  = 0.85, P  < 0.001) or thrombolysis in myocardial infarction (TIMI) risk index (AUC ASI  = 0.80 vs. AUC TIMI  = 0.84, P  < 0.001). CONCLUSION: The ASI offers an expedient mean to promptly identify ACS patients at elevated risk of in-hospital death. Its simplicity and effectiveness could render it a valuable tool for early risk stratification in this population.

Phenotypic and genetic relationships among anogenital distance, anti-Müllerian hormone, and in vitro embryo production in Gyr dairy cattle.

Anti-Müllerian hormone (AMH) concentration and number of recovered oocytes (ROOC) are phenotypic parameters associated with in vitro embryo production (IVEP). More recently, anogenital distance (AGD) has been proposed as a proxy for fertility in dairy cattle that is easy to collect at a low cost. The aim of this study was to characterize the AGD and its phenotypic and genetic associations with AMH and IVEP in Bos indicus Gyr dairy cattle. The hypothesis was that the number of ROOC, in vitro-produced embryos, and AMH concentration would increase as the AGD decreases. From July to December 2021, a single morphometrical measurement of AGD was collected in 552 donors from 6 herds in Brazil. A subset of donors had AMH assayed on the same day. Only ovum pick-up events that occurred up to 12 mo preceding and 7 mo succeeding the AGD measurement were used to assess the association between AGD, AMH, and IVEP. Thus, 472 donors (1,551 ovum pick-up events and 140 donors with AMH) were considered in the analysis. A raw average was calculated for each individual donor's ROOC, viable oocytes, total produced embryos, viability rate, and embryo rate (defined as total produced embryos/viable oocytes). Comparisons were conducted within the age categories of 3 to <6 yr or 6 to <10 yr. Phenotypic associations were performed in SAS software (SAS Institute Inc., Cary, NC). Genetic correlations were estimated using the BLUPF90 family of programs. The AGD (128.7 mm ± 14; mean ± standard deviation) had a normal distribution and was highly variable (83 to 172 mm) among the Gyr population. Our experimental hypothesis was partially supported by a phenotypic association of a greater number of total produced embryos (R2 = 0.023) as AGD decreased. Our results failed to support an increase in AMH concentration along with a decrease in AGD. In addition, positive and low genetic correlations were observed between AGD and viable oocytes (r = 0.08), and embryo rate (r = 0.20). A greater number of viable oocytes and embryos were observed in donors in the high compared with intermediate and low ROOC categories within both age categories. The age interval of 3 to <6 yr showed a greater number of recovered and viable oocytes for the high AMH compared with the low category, but no differences were observed among the AGD categories. In summary, for the Gyr breed, AGD was phenotypically inversely associated with a quantity-related parameter, such as the total number of produced embryos. In contrast, AGD showed a low genetic correlation with qualitative-related outcomes such as viable oocytes and embryo rate. Further studies should be performed to validate these retrospective analyses and to better understand the association between AGD and IVEP.

Historical Hg accumulation (∼65 cal kyr BP) in upland lakes of the Southeastern Brazilian Amazonia: New evidence of the extent of geogenic and diagenetic control.

The historical upland lake sediments in the Brazilian Amazon witnessed significant enrichment of total mercury (Hg). However, its spatio-temporal relationships between lakes and the main factors responsible for this enrichment are still poorly constrained. Given this, we geochemically investigated 12 radiometrically dated (extending back to ∼65 cal kyr BP) sediment cores from the Carajás plateau, Brazil. The Hg level in historical sediments presented a large temporal variability (from 1 to 3200 µg/kg), with maximum accumulation peaks observed between 30 and 45 cal kyr BP in core R2, LB3, and R1. However, the lack of the Hg peak in other cores (LV2 and LTI3) during the same period despite being proximity and non-correlation of these Hg peaks with the onset of major volcanic events indicates that this source has little bearing. Hg enrichment is highly dependent on the type of sedimentary facies, with higher values were associated with detritic facies (MI) and detritic+organic facies (P/M). Principal component analysis shows that aluminosilicate minerals and organic matter are essential hosts of Hg in sediments. The positive correlation between Al, Ti, and Hg in detritic facies and their strong coherence with Hg/TOC in R1, R5, LSL, ST02, and LB3 cores indicate that Hg is primarily of lithogenic origin. This can be substantiated by the higher background threshold value of Hg (574 µg/kg) in historical lake sediments compared to those in recent lake sediments (340 µg/kg). However, the most pronounced Hg peak (3200 µg/kg) in R2 around 45 cal kyr BP, which correlates positively with TOC, S, Se, As, and Mo indicates their diagenetic enrichment in organic-rich sediments under anoxic conditions. Thus, in addition to the lithogenic effect, it can be argued that diagenesis can play a significant role in prompting Hg enrichment in the Carajás lake sediments in Amazonia.

Regional abundances of binder of sperm (BSP) proteins are negatively associated with the quality of frozen-thawed bovine spermatozoa.

In brief: The localization and abundance of the sperm BSP proteins correlate with in vitro fertility in domestic bulls used in artificial insemination service. Abstract: Binder of sperm (BSP) proteins, secreted mainly by the accessory sex glands, are the major protein family present in bovine seminal plasma and on the sperm surface after ejaculation. In vivo, BSP proteins facilitate sperm capacitation and sperm reservoir formation; however, their impact on sperm function within the in vitro systems is less clear. Therefore, this biomarker-based study aimed to characterize the localization and abundance of BSP proteins from in vitro processed frozen-thawed bovine spermatozoa. Using image-based flow cytometry and Western blotting, BSP protein localization, abundance, membrane and acrosomal integrity were investigated in the supernatant (nonmotile) and pellet (motile) fractions of gradient-separated bull spermatozoa. Spermatozoa from the supernatant fraction had high enrichment of all BSP proteins investigated (BSP1, BSP3, BSP5; P < 0.05) when compared to the pellet fraction. In the pellet fraction, BSP1 and BSP3 bound predominately to the acrosomal region, whereas BSP5 had a high affinity for the midpiece. However, in the supernatant fraction, BSP proteins predominately coated the entire sperm surface resulting in the loss of regional specificity. High BSP protein abundance in the spermatozoa also correlated with acrosome and membrane damage. Whereas a high abundance of BSP5 correlated with low embryo cleavage rates, high abundance of BSP1 on the sperm head coincided with a high blastocyst rate. Therefore, changes in the quantity and localization of specific BSP proteins could act as potential biomarkers of sperm quality and fertility.

Intergeracionalidade e promoção da saúde: reflexões e desafios na atenção à pessoa idosa / Intergenerationality and Health Promotion: Reflections and Challenges in the Care of Older Adults

Resumo Objetivo Discutir sobre a promoção da saúde da pessoa idosa por meio da intergeracionalidade, com ênfase na educação intergeracional nos Programas Intergeracionais, como uma proposta de educação para o protagonismo da pessoa idosa e o envelhecimento bem-sucedido. Método Ensaio teórico, de cunho reflexivo com abordagem qualitativa. Embasando-se na leitura de documentos que reforçam o aumento da longevidade e a preocupação com a promoção da saúde para a pessoa idosa no Brasil, a fim de refletir sobre a intergeracionalidade na promoção da saúde e a utilização da educação intergeracional para promover o envelhecimento bem-sucedido, por meio dos Programas Intergeracionais. Resultados Organizaram-se em três tópicos: Promoção da saúde da pessoa idosa: desafios para o seu protagonismo; Compreensão sobre envelhecimento para a aprendizagem intergeracional; Programa intergeracional: protagonismo para a promoção da saúde da pessoa idosa. Conclusão Experiências exitosas na saúde, especificamente nos espaços ocupados pela Atenção Primária à Saúde ainda se mostram restritas ou pouco visualizadas para a construção de uma educação transformadora para a promoção da saúde da pessoa idosa. O desafio é fomentar pesquisas científicas, para que os profissionais, a partir da educação permanente, possam potencializar os momentos de educação em saúde a partir da educação intergeracional, sendo assim, a construção e implementação de Programas Intergeracionais podem representar essa possibilidade.

Abstract Objective To discuss the promotion of health for older adults through intergenerationality, with an emphasis on intergenerational education within Intergenerational Programs, as a proposal for education fostering the protagonism of older adults and successful aging. Method Theoretical essay, reflective in nature with a qualitative approach. Grounded in the examination of documents emphasizing the increase in longevity and the concern for health promotion among older adults in Brazil, the aim is to contemplate intergenerationality in health promotion and the utilization of intergenerational education to foster successful aging through Intergenerational Programs. Results Organized into three topics: Health promotion for older adults: challenges for their protagonism; Understanding aging for intergenerational learning; Intergenerational program: protagonism for the health promotion of older adults. Conclusion Successful experiences in health, specifically within the realms of Primary Health Care, still appear to be limited or insufficiently recognized for the development of transformative education in health promotion for older adults. The challenge lies in fostering scientific research so that professionals, through continuous education, can enhance health education moments through intergenerational education. Thus, the establishment and implementation of Intergenerational Programs may represent this promising possibility.

Estratégias de gestores no cuidado com idosos dependentes em domicílio no Brasil / Estrategias de gestores en el cuidado a domicilio de adultos mayores dependientes en Brasil / Managers' strategies in caring for dependent elderly at home in Brazil

Resumo Objetivo Investigar as estratégias utilizadas por gestores da saúde no Brasil para o cuidado com o idoso dependente atendido no domicílio. Métodos Pesquisa qualitativa, com aporte na hermenêutica, numa perspectiva compreensiva acerca do cuidado com o idoso em domicílio. Participaram 16 gestores atuantes na Atenção Primária à Saúde e programas específicos da saúde do idoso das cinco regiões brasileiras. A coleta de dados ocorreu entre junho e setembro de 2019, com entrevistas semiestruturadas, e os dados foram sistematizados e consolidados em duas temáticas, à luz da hermenêutica. Resultados Para a consolidação e a melhoria do cuidado domiciliar com os idosos, os gestores articularam práticas de educação em saúde; mapearam as vulnerabilidades; implantaram fluxos e protocolos de atenção e realizaram grupos de apoio comunitários e de promoção à saúde, além de práticas integrativas e complementares. Conclusão Destacam-se múltiplas estratégias no cuidado com o idoso dependente em domicílio, como ações de educação em saúde, individuais e coletivas, tais como processos gerenciais do trabalho, em que o gestor desempenha papel fundamental no desenvolvimento das ofertas à população idosa.

Resumen Objetivo Investigar las estrategias utilizadas por gestores de la salud en Brasil para el cuidado de adultos mayores dependientes atendidos en su domicilio. Métodos Estudio cualitativo, con aporte en la hermenéutica, desde una perspectiva comprensiva sobre el cuidado de adultos mayores en su domicilio. Participaron 16 gestores que trabajan en la Atención Primaria de Salud y en programas específicos de salud de adultos mayores de las cinco regiones brasileñas. La recopilación de datos se realizó entre junio y septiembre de 2019, mediante entrevistas semiestructuradas. Se sistematizaron y consolidaron los datos en dos temáticas, de acuerdo con la hermenéutica. Resultados Para la consolidación y la mejora de los cuidados domiciliarios a los adultos mayores, los gestores articularon prácticas de educación para la salud, mapearon las vulnerabilidades, implantaron flujos y protocolos de atención y realizaron grupos de apoyo comunitario y de promoción de la salud, además de prácticas integrativas y complementarias. Conclusión Se destacan múltiples estrategias en el cuidado a domicilio de los adultos mayores dependientes, como acciones de educación para la salud, individuales y colectivas, tales como procesos administrativos del trabajo, en los que es gestor desempeña un papel fundamental en la elaboración de las ofertas a la población mayor.

Abstract Objective To investigate the strategies Brazilian health managers employ to supply dependent elderly home care. Methods This is qualitative hermeneutics-based research with a comprehensive perspective on elderly home care. Sixteen managers working in Primary Health Care and specific elderly healthcare programs from the five Brazilian regions participated in this study. Data were collected from June to September 2019 with semi-structured interviews, and later systematized and consolidated into two themes in light of hermeneutics. Results Managers articulated health education practices, mapped vulnerabilities, implemented care flows and protocols, and organized community support and health promotion groups, besides integrative and complementary practices to consolidate and improve elderly home care. Conclusion Multiple strategies in dependent elderly home care stand out, such as individual and collective health education actions and work management processes, in which the manager plays a crucial role in developing services for the elderly.

Late Quaternary hydroclimate and vegetation changes in an upland lake in southeastern Amazonia.

An integrated approach considering facies, isotopic, and palynological analyses of lake sediments from the Serra Norte de Carajás, southeastern Amazonia, is presented in this work to refine paleoclimate and paleohydrological changes based on upland lake sediments during the late Quaternary. The sediments have a fining-upward deposition cycle typical of upland swamps/lakes. The origin of organic matter is autochthonous mainly related to C3 terrestrial plants, macrophytes and algae. The pollen records of Hedyosmum during the Early Pleistocene suggest lower temperatures than those observed along Holocene. In the transitional period between the Pleistocene and the Holocene, rainfall decreased, causing the retraction of the flooded area, favoring the development of marshy conditions. The Late and Middle Holocene were marked by higher temperatures and lower humidity. Afterward, the increased pollen concentration from canga and forest vegetation, macrophytes, palms, and algae suggested increased humidity in the Early Holocene. The relative contribution of forest pollen along the records indicated that drier conditions were not strong enough for an extensive expansion of canga over forested areas.