Chemical composition of extracts and fractions from Miconia ibaguensis (MELASTOMATACEAE) leaves and evaluation of biological activities.

The study aimed to assess the chemical composition of Miconia ibaguensis leaves extracts and fractions obtained from the ethanolic extract (EE), along with evaluating their antifungal, antibacterial, antidiabetic, and antioxidant activities. The ethyl acetate fraction (EAF) exhibited potent antifungal activity against Candida spp (1.95 - 3.90 µg mL-1) and potent antioxidant activity in the DPPH (1.74 ± 0.07 µg mL-1), FRAP (654.01 ± 42.09 µmol ETrolox/gsample), and ORAC (3698.88 ± 37.28 µmol ETrolox/gsample) methods. The EE displayed inhibition against the α-amylase enzyme (8.42 ± 0.05 µg mL-1). Flavonoids, hydrolysable tannins, triterpenoids, and phenolic acids, identified in the EE and fractions via (-)-HPLC-ESI-MS/MS analysis, were found to contribute to the species' biological activity potentially. These findings suggest promising avenues for further research and potential applications in pharmacology and natural products, offering new possibilities in the fight against global health issues.

Training in preconception care focused on primary health care providers: Effects on preconception care knowledge and provision.

Objective: To assess the effect of a rapid training intervention on the knowledge of health providers and the provision of preconception care in primary health care services. Methods: Randomized community trial in eight primary health care facilities (four were randomly allocated to the intervention group and four to the control group) in 2020 in Brazil. The intervention consisted of rapid training in preconception health for all health providers in the intervention group. Health providers who had medicine and nursing backgrounds answered structured questionnaires about their knowledge and practices of preconception health-related topics, and reproductive-age women attending the services completed a questionnaire about their experience with preconception care in pre- and postintervention (three months after the intervention) periods. Findings: The level of knowledge among health providers increased after the intervention, but providing information about preconception care and prescribing folic acid showed no significant change, with the exception of screening for future pregnancy intention. Key conclusions and implications for practice: Although the knowledge of health providers on preconception care is a fundamental requirement for its provision in primary health care settings, rapid training focused on preconception health topics was not sufficient to change their practices, with the exception of pregnancy intention screening, which experienced a slight increase after the training. It appears that additional elements, such as the reorganization of primary health care services to prioritize non-pregnant women, the development and implementation of specific guidelines, along with strategies for the dissemination of preconception care awareness, may also play crucial roles for full preconception care implementation in addition to health providers' knowledge of such issues.

Exploring the composition and properties of Centella asiatica metabolites and investigating their impact on BSA glycation, LDL oxidation and α-amylase inhibition.

Centella asiatica (L.) Urb. is a small herbaceous plant belonging to the Apiaceae family that is rich in triterpenes, such as asiaticoside and madecassoside. Centella asiatica finds broad application in promoting wound healing, addressing skin disorders, and boosting both memory and cognitive function. Given its extensive therapeutic potential, this study aimed not only to investigate the Centella asiatica ethanolic extract but also to analyze the biological properties of its organic fractions, such as antioxidant antiglycation capacity, which are little explored. We also identified the main bioactive compounds through spectrometry analysis. The ethanolic extract (EE) was obtained through a static maceration for seven days, while organic fractions (HF: hexane fraction; DF: dichloromethane fraction; EAF: ethyl acetate fraction; BF: n-butanol fraction and HMF: hydromethanolic fraction) were obtained via liquid-liquid fractionation. The concentration of phenolic compounds, flavonoids, and tannins in each sample was quantified. Additionally, the antiglycation (BSA/FRU, BSA/MGO, and ARG/MGO models) and antioxidant (FRAP, ORAC, and DPPH) properties, as well as the ability to inhibit LDL oxidation and hepatic tissue peroxidation were evaluated. The inhibition of enzyme activity was also analyzed (α-amylase, α-glycosidase, acetylcholinesterase, and butyrylcholinesterase). We also evaluated the antimicrobial and cytotoxicity against RAW 264.7 macrophages. The main compounds present in the most bioactive fractions were elucidated through ESI FT-ICR MS and HPLC-ESI-MS/MS analysis. In the assessment of antioxidant capacity (FRAP, ORAC, and DPPH), the EAF and BF fractions exhibited notable results, and as they are the phenolic compounds richest fractions, they also inhibited LDL oxidation, protected the hepatic tissue from peroxidation and inhibited α-amylase activity. Regarding glycation models, the EE, EAF, BF, and HMF fractions demonstrated substantial activity in the BSA/FRU model. However, BF was the only fraction that presented non-cytotoxic activity in RAW 264.7 macrophages at all tested concentrations. In conclusion, this study provides valuable insights into the antioxidant, antiglycation, and enzymatic inhibition capacities of the ethanolic extract and organic fractions of Centella asiatica. The findings suggest that further in vivo studies, particularly focusing on the butanol fraction (BF), may be promising routes for future research and potential therapeutic applications.

Chronic exposure to 2,2'-azobis-2-amidinopropane that induces intestinal damage and oxidative stress in larvae of Drosophila melanogaster.

Embryonic development is exceptionally susceptible to pathogenic, chemistry and mechanical stressors as they can disrupt homeostasis, causing damage and impacted viability. Oxidative stress has the capacity to induce alterations and reshape the environment. However, the specific impacts of these oxidative stress-induced damages in the gastrointestinal tract of Drosophila melanogaster larvae have been minimally explored. This study used 2,2-azobis (2-amidinopropane) dihydrochloride (AAPH), a free radical generator, to investigate oxidative stress effects on Drosophila embryo development. The results showed that exposing Drosophila eggs to 30 mM AAPH during 1st instar larva, 2nd instar larva and 3rd instar larva stages significantly reduced hatching rates and pupal generation. It increased the activity of antioxidant enzymes and increased oxidative damage to proteins and MDA content, indicating severe oxidative stress. Morphological changes in 3rd individuals included decreased brush borders in enterocytes and reduced lipid vacuoles in trophocytes, essential fat bodies for insect metabolism. Immunostaining revealed elevated cleaved caspase 3, an apoptosis marker. This evidence validates the impact of oxidative stress toxicity and cell apoptosis following exposure, offering insights into comprehending the chemically induced effects of oxidative stress by AAPH on animal development.

Phytochemical composition of aerial parts and roots of Pfaffia glomerata (Spreng.) Pedersen and anticholinesterase, antioxidant, and antiglycation activities.

The Pfaffia glomerata, a plant popularly called Brazilian ginseng, is widely used in Brazil for the treatment of various pathologies, including those associated with the Central Nervous System. 20-hydroxyecdysone (20E), a phytosteroid present in this plant, can promote adaptogenic effects in the organism, providing greater body resistance to stressors. This study aimed to evaluate the phytochemical composition and the anticholinesterase, antioxidant, and antiglycation effects of extracts and fractions of aerial parts and roots of P. glomerata, also analyzing their possible cytotoxic effects. The fractions were obtained by partitioning methanol extracts from the aerial part and roots of P. glomerata with hexane, dichloromethane, ethyl acetate, n-butanol, and water. The samples were initially tested in anticholinesterase, antioxidant, and antiglycation assays, and the most promising samples were submitted for cytotoxicity and chromatographic analyses. Mass spectrometry and chromatography methods revealed that 20E was the main compound in the dichloromethane fractions, there being 35% more 20E in the aerial part (APD) than in the roots (RD). Added to the higher concentration of 20E, the APD fraction also presented more promising results than the RD fraction in anticholinesterase and antioxidant analyses, indicating that their effects may be related to the concentration of 20E. These same fractions showed no hemolytic effects but were cytotoxic in high concentrations. These new findings contribute to scientific information about P. glomerata and open more perspectives for the understanding of its therapeutic properties, allowing the association of biological activity with the presence of 20E.

Contraceptive switch and abandonment among women using the pill, condoms and injectables in Brazil.

OBJECTIVE: The aim of our study was to assess the covariates of contraceptive switching and abandonment among Brazilian women stratified by oral pills, condoms and injectables. MATERIALS AND METHODS: Women attending primary health care services in three Brazilian mid- to large-sized cities were interviewed face-to-face about their contraceptive practices (n = 2,051). Data were collected using a contraceptive calendar. Analysis included estimates using Kaplan-Meier multiple-decrement life-table probabilities and discrete-time hazards modelling of switching from a method to another or to no method. RESULTS: Among 3,280 segments of contraceptive use, we observed that five-year contraceptive switching rates ranged from 34.9% among injectable users to 56.1% among pill users. Of particular concern were the high discontinuation rates of abandonment, which ranged from 50.9% among injectable users to 77.4% among pill users. Covariates of method switching and abandonment varied by type of method, but age, race/ethnicity, religion and relationship status must be highlighted as key elements of discontinuation. CONCLUSION: Contraceptive method switching and abandoning are frequent outcomes of contraceptive use. Understanding the factors that shape women's decisions to continue or discontinue the use of a contraceptive method can help tailoring comprehensive contraceptive counselling that meet their expectations and reproductive needs when starting using a method.

Contraceptive discontinuation among women in need of contraception may difficult the achievement of their fertility desires, which can lead to unintended pregnancies.

Changes in contraceptive use during the second COVID-19 lockdown in Brazil: A web-based survey.

OBJECTIVE: We assessed contraceptive use changes during the second lockdown due to COVID-19 in Brazil and their associated factors. STUDY DESIGN: This was a longitudinal web-based study in which 725 non-pregnant Brazilian women aged 18 to 49 completed an online structured survey about their contraceptive practices in two rounds in 2021. Multivariate multinomial logistic regression was used to analyze factors associated with contraceptive use changes during COVID-19. RESULTS: Sixty percent reported they changed their contraceptive use during COVID-19, especially starting to use a method or switching to a more effective one (32%). In adjusted analysis, women who were ambivalent about a future pregnancy were more likely to switch to a more effective method (adjusted odds ratio [aOR] 2.33, 95% CI 1.42-3.83) and to stop using contraceptive (aOR 3.64, 95% CI 1.91-6.91). Women with a partner were less likely to switch to a more effective method (aOR 0.61, 95% CI 0.39-0.93) and to stop using contraceptive (aOR 0.53, 95% CI 0.31-0.93), but more likely to switch to a less effective method (aOR 2.25, 95% CI 1.16-4.34). Age was also associated with contraceptive use changes. CONCLUSIONS: Contraceptive use among Brazilian women during COVID-19 depended on their age and partnership status. During the period of the highest peak in the number of cases and deaths in the country, ambivalence towards a future pregnancy increased changes in contraceptive use. IMPLICATIONS: Contraceptive changes were observed during a two-wave web-survey in Brazil depending on women's age and partnership status. Ambivalence towards a future pregnancy increased changes in contraceptive use and should be considered in future studies regarding sexual and reproductive health and COVID-19 as well as in family planning program implementation.

Bioactive compounds from the leaves of Maytenus ilicifolia Mart. ex Reissek: Inhibition of LDL oxidation, glycation, lipid peroxidation, target enzymes, and microbial growth.

ETHNOPHARMACOLOGICAL RELEVANCE: Maytenus ilicifolia Mart. ex Reissek, a medicinal plant used for treating gastritis, ulcers, and gastric disorders, possesses therapeutic properties attributed to diverse leaf compounds-terpenoids, alkaloids, flavonoids, phenols, and tannins, reflecting the ethnopharmacological knowledge of traditional users. AIMS OF THE STUDY: We aimed to assess the antioxidant and antiglycant capacities of Maytenus ilicifolia's ethanolic extract and organic fractions, identify bioactive compounds through HPLC-MS/MS analysis, and conduct phytochemical assessments. We also assessed their potential to inhibit digestive and cholinesterase enzymes, mitigate oxidation of human LDL and rat hepatic tissue, and examine their antimicrobial and cytotoxic properties. MATERIALS AND METHODS: Organic fractions (hexane - HF-Mi, dichloromethane - DMF-Mi, ethyl acetate - EAF-Mi, n-butanol - BF-Mi, and hydromethanolic - HMF-Mi) were obtained via liquid-liquid partitioning. Antioxidant (DPPH, FRAP, ORAC) and antiglycant (BSA/FRU, BSA/MGO, ARG/MGO/LDL/MGO models) capacities were tested. Phytochemical analysis employed HPLC-MS/MS. We also studied the inhibitory effects on α-amylase, acetylcholinesterase, butyrylcholinesterase, human LDL and rat hepatic tissue oxidation, antimicrobial activity, and cytotoxicity against RAW 264.7 macrophages. RESULTS: HPLC-ESI-MS/MS identified antioxidant compounds such as catechin, quercetin, and kaempferol derivatives. Ethanolic extract (EE-Mi) and organic fractions demonstrated robust antioxidant and antiglycant activity. EAF-Mi and BF-Mi inhibited α-amylase (2.42 µg/mL and 7.95 µg/mL) compared to acarbose (0.144 µg/mL). Most organic fractions exhibited ∼50% inhibition of acetylcholinesterase and butyrylcholinesterase, rivaling galantamine and rivastigmine. EAF-Mi, BF-Mi, and EE-Mi excelled in inhibiting lipid peroxidation. All fractions, except HMF-Mi, effectively countered LDL oxidation, evidenced by the area under the curve. These fractions protected LDL against lipid peroxidation. CONCLUSION: This study unveils Maytenus ilicifolia's ethanolic extract and organic fractions properties. Through rigorous analysis, we identify bioactive compounds and highlight their antioxidant, antiglycant, enzyme inhibition, and protective properties against oxidative damage. These findings underline its significance in modern pharmacology and its potential applications in healthcare.

Reproductive autonomy associated with the use of contraceptive methods among reproductive aged women.

OBJECTIVE: To assess the sociodemographic aspects associated with reproductive autonomy among urban women, with special regard to the relationship with the use of contraceptive methods. METHOD: Cross-sectional study with 1252 women, conducted between April and June 2021, using the Brazilian version of the Reproductive Autonomy Scale. Data were analyzed using multiple linear regression. RESULTS: Mean scores for the subscales were 2.5 (SD=0.3) (Decision-making), 3.8 (SD=0.3) (Absence of Coercion) and 3.6 (SD=0.4) (Communication). Compared to women who reported no use of contraceptive methods, women using barrier or behavioral methods and those using LARC had higher level of reproductive autonomy on all dimensions of the Scale (p<0.001). Other aspects associated with reproductive autonomy were education, race/ethnicity, religion, socioeconomic status and cohabitation living with a partner, depending on each subscale. CONCLUSION: The type of contraceptive method used was statistically associated with reproductive autonomy in all subscales.

Outcomes of Intrauterine Device Insertion by Certified Midwives and Obstetric Nurse Practitioners.

OBJECTIVES: to evaluate the outcomes of Interval Copper Intrauterine Device (IUD) insertion performed by certified midwives and obstetric nurse practitioners at a Peri-Hospital Birth Center. METHODS: a cross-sectional study was conducted involving 75 women who underwent IUD insertion between January 2018 and February 2020. Data collection was carried out using medical records and telephone interviews. RESULTS: no instances of uterine perforation were observed. Expulsion rates of the devices were 1.3% within 30 to 45 days of use and 5.3% within the first year of use. The follow-up removal rate was 4.0%. The average pain score reported was 4.2 (SD = 3.3). Among those who continued using the device, 93.1% expressed satisfaction. CONCLUSIONS: the findings demonstrate that IUD insertion by certified midwives and obstetric nurse practitioners is a safe procedure, yielding outcomes comparable to those reported in the existing literature.

Molecular Epidemiology of Pathogenic Leptospira spp. Infecting Dogs in Latin America.

Canine leptospirosis is a bacterial disease caused by spirochetes of the genus Leptospira. Infections can vary from asymptomatic and chronic infections to clinical acute diseases. The disease is endemic in tropical areas, such as Latin American countries, but a broad understanding of the dynamics of circulation of strains, based on molecular data, has not yet been performed. Based on in silico analyses, the present study aims to analyze the genetic diversity and circulation patterns of haplotypes from pathogenic leptospires infecting dogs in Latin America. DNA sequences were obtained from GenBank platform, curated, and aligned. Genetic distances were calculated, and a maximum likelihood tree and haplotype network were constructed. According to the inclusion criteria adopted, a total of 148 sequences were identified. Most of the records were from Brazil, including sequences from L. interrogans serogroup Icterohaemorrhagiae. Phylogenetic analysis showed a genetically closely related cluster, consisting of a larger haplogroup that includes the reference strain Fiocruz L1-130, known to be the major circulating strain in humans. Moreover, no genetic variations were observed according to clinical history and/or geographical localization. We described the molecular epidemiology of leptospires circulating among dogs in Latin America and demonstrated a very genetically homogeneous group, elucidating its ubiquitous circulation pattern and drawing attention to the important role of dogs in the One Health transmission dynamics of leptospirosis.

Genetic Analysis of LigA, LipL32, Loa22, and OmpL1 Antigens from Leptospira spp. Sejroe Serogroup: How Close We Are To a Vaccine Against Bovine Leptospirosis?

Bovine leptospirosis has as main causative agents Leptospira spp. from Sejroe serogroup. Vaccination is a crucial step to control this infection. The use of conserved proteins among Leptospira spp. is of great importance for a protective immune response. The aim of the present study is to genetically analyze antigens of Leptospira spp. from Sejroe serogroup strains isolated from cattle for a preliminary evaluation of vaccine candidates. Genes associated with antigenicity-LigA, LipL32, Loa22, and OmpL1-were analyzed through bioinformatic and immunoinformatic tools. Despite high diversity observed in strains, on an amino acid level, highly conserved regions were observed (> 90%), particularly in LipL32 gene. Moreover, highly conserved amino acid regions (> 30 aa) were observed in all genes, regardless of species, geographical origin or biological source of isolation. Superposed structures of protein fragments including all the predicted MHC-II and B-Cell epitopes were demonstrated. Results presented herein are preliminary, but a fundamental step towards the development of an efficient vaccine against bovine leptospirosis, a silent but enormously concerning disease.

Annona crassiflora Mart. Fruit Peel Polyphenols Preserve Cardiac Antioxidant Defense and Reduce Oxidative Damage in Hyperlipidemic Mice.

Dyslipidemia and oxidative stress are directly related to the pathogenesis of cardiovascular diseases. Annona crassiflora Mart. (ACM) has been traditionally used in folk medicine to alleviate inflammation and pain. This plant is rich in polyphenols, which exhibit high antioxidant capacity. The present study aimed to elucidate the antioxidant properties of ACM in the heart of hyperlipidemic mice. The animals were orally administered either a crude ethanol extract (CEAc) or a polyphenols-rich fraction (PFAc) obtained from ACM fruit peel. There were correlations between blood and fecal biochemical data with cardiac oxidative stress biomarkers. Here, the pre-treatment with CEAc for 12 d led to an increase in glutathione content (GSH) and a reduction in the activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase. Moreover, PFAc was found to enhance the total antioxidant capacity as well as GSH, SOD and CAT activities, which were reduced by Triton WR-1339-induced hyperlipidemia. Moreover, the administration of PFAc before the treatment resulted in a decrease in protein carbonylation and lipid peroxidation levels, as well as a reduction in the activities of glutathione reductase and glucose-6-phosphate dehydrogenase. ACM fruit peel showed improvement in the glutathione system, mainly its polyphenols-rich fraction, indicating a potential cardioprotective antioxidant usage of this plant extract.

"We want to hug a friend": the covid-19 pandemic among low-income adolescents.

OBJECTIVE: To examine the perceptions of adolescent students from a public school, of both sexes, living in a peripheral region of the city of São Paulo, Brazil, in relation to the covid-19 pandemic, with a special focus on their experiences regarding education and sociability. METHODS: This study is part of the Global Early Adolescent Study. Seven face-to-face focus groups were conducted with adolescents between 13 and 16 years old (19 girls and 15 boys) in 2021. RESULTS: The experience of remote teaching was frustrating for the adolescents, without the daily and personalized monitoring of the teacher(s). In addition to the difficult or impossible access to devices and the lack of support from schools, there is also the domestic environment, which made the schooling process more difficult, especially for girls, who were forced to take on more household and family care tasks. The closed school blocked an important space for socialization and forced family interaction, generating conflicts and stress in the home environment. The abrupt rupture brought feelings of fear, uncertainty, anguish and loneliness. The iterative evocation of the words "stuck", "alone" and "loneliness" and the phrase "there was no one to talk to" shows how most of the adolescents experienced the period of distancing. The pandemic aggravated the objective and subjective conditions of preexisting feelings, such as "not knowing the future" and the prospects of a life project. CONCLUSION: It has been documented how pandemic control measures implemented in a fragmented way and without support for the most impoverished families have negative effects on other spheres of life, in particular for poor young people. The school is a privileged territory to propose/construct actions that help adolescents to deal with problems aggravated in/by the pandemic.

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Atenção em contracepção no puerpério: o DIU está sendo ofertado às mulheres usuárias de Unidades Básicas de Saúde?

Material desenvolvido por Tamires Lima Melli para Dissertação: Atenção em contracepção no puerpério: o DIU está sendo ofertado às mulheres usuárias de unidades básicas de saúde?, apresentada ao Programa de Pós-Graduação - Mestrado Profissional em Enfermagem na Atenção Primária em Saúde no Sistema Único de Saúde da Escola de Enfermagem da Universidade de São Paulo, 2019..

Pinnipeds carriers of pathogenic Leptospira: New data based on molecular characterization.

Leptospirosis is a bacterial disease caused by the infection of pathogenic strains of the genus Leptospira, endemic in tropical and subtropical regions. Although well documented in terrestrial animals and humans, little information is available on its distribution and impact on marine animals. Despite clinical manifestations that may occur, the occurrence of carriers was suggested in some species. Nevertheless, there are few studies regarding the infection by Leptospira sp. in marine mammals. In this context, and considering the One Health approach, the present aimed to investigate pinnipeds' role as Leptospira sp. carriers. Kidneys of 47 pinnipeds of two species, Arctocephalus australis (n = 40) and Arctocephalus tropicalis (n = 7) were collected. DNA was extracted and the diagnosis was performed through LipL32-PCR and genetic characterization based on secY gene sequencing. Phylogenetic analysis and haplotype networks were constructed. Pathogenic Leptospira sp. DNA was detected in 31.9% (15/47) of the tested pinnipeds. It was possible to amplify and sequence eight strains (6 for A. australis, 2 for A. tropicalis), all identified as L. interrogans, with high similarity with sequences from Icterohaemorrhagiae serogroup. Phylogenetic analysis revealed sequences from the present study grouped in species-specific unique clusters, but very close to others from humans, wild animals, and domestic animals. We demonstrate that pinnipeds could act as carriers, and play an important role in leptospirosis dynamics.

Assessment of the quality of antenatal care in Mozambique.

OBJECTIVE: To assess the quality of antenatal care and its covariates among postpartum women in Mozambique. DESIGN: Cross-sectional study. SETTING: The study was undertaken either at the maternity hospital or at home, in Mozambique, in 2019. PARTICIPANTS: A total of 393 women aged 18 to 49 years were interviewed immediately after giving birth. MEASUREMENTS: The quality of antenatal care was analysed based on the guidelines of the Ministry of Health of Mozambique: antenatal appointment in the first 16 weeks of gestation, 4 or more antenatal appointments, at least one laboratory test, at least 4 or more clinical-obstetric procedures, 3 doses of the prophylactic intermittent treatment for malaria, 2 doses of the tetanus vaccine, and counselling related to general health care. Women who reported all of these situations were classified as having had quality antenatal care. FINDINGS: All women reported at least one antenatal care visit, but only 13.0% were classified as having had quality antenatal care. Women who underwent antenatal care in previous pregnancies (aOR=4,28; 95% CI=1,45-12,62) and whose current pregnancy was planned (aOR=2,51; 95% CI=1,11-5,68) were more likely to have quality antenatal care than those who had never had access to antenatal care in previous pregnancies and those who currently had an unplanned pregnancy. It was observed that the criteria recommended by the Ministry of Health were not followed during antenatal care, especially regarding the gestational age at the beginning of antenatal care, the minimum number of consultations, performing blood tests (complete blood count, blood glucose, blood typing and Rh factor) and guidance on signs of risk in pregnancy and childbirth. KEY CONCLUSIONS: In general, the criteria recommended for quality antenatal care are not incorporated into clinical practice in Mozambique. IMPLICATIONS FOR PRACTICE: While quality antenatal care is essential to reduce maternal morbidity and mortality, many sub-Saharan countries still have low-quality antenatal care services, which is one of the reasons why these countries have the highest maternal mortality rates worldwide.