Time series analysis: trend in late maternal mortality in Brazil, 2010-2019.

To analyze the temporal trend of the late maternal mortality ratio (LMMR) in Brazil and its geographic regions in the period from 2010 to 2019, an ecological time series study was conducted. Data related to late maternal mortality from information systems of the Brazilian Ministry of Health were used. Statistical analysis used Prais-Winsten autoregressive models.

Maternal mortality: protocol of a study integrated to the Birth in Brazil II survey.

The Maternal Mortality Study conducts a hospital investigation of maternal deaths that occurred in 2020/2021 in the maternity hospitals sampled by the Birth in Brazil II survey, with the following objectives: estimate the maternal mortality underreporting; calculate a correction factor and the corrected (MMR); validate the causes of maternal mortality reported in the death certificate (DC); and analyze the factors associated with maternal mortality. The Birth in Brazil II includes approximately 24,250 puerperal women distributed in 465 public, private, and mixed hospitals with ≥ 100 live births/year in the five macroregions of Brazil. The Maternal Mortality Study data will be completed using the same Birth in Brazil II questionnaire, from the consultation of hospital records.

Perinatal mortality, severe maternal morbidity and maternal near miss: protocol of a study integrated with the Birth in Brazil II survey.

Brazil presents high maternal and perinatal morbidity and mortality. Cases of severe maternal morbidity, maternal near miss, and perinatal deaths are important health indicators and share the same determinants, being closely related to living conditions and quality of perinatal care. This article aims to present the study protocol to estimate the perinatal mortality rate and the incidence of severe maternal morbidity and maternal near miss in the country, identifying its determinants.

A pentameric TRPV3 channel with a dilated pore.

Transient receptor potential (TRP) channels are a large, eukaryotic ion channel superfamily that control diverse physiological functions, and therefore are attractive drug targets. More than 210 structures from more than 20 different TRP channels have been determined, and all are tetramers. Despite this wealth of structures, many aspects concerning TRPV channels remain poorly understood, including the pore-dilation phenomenon, whereby prolonged activation leads to increased conductance, permeability to large ions and loss of rectification.

Doula support among brazilian women who attended the senses of birth health education intervention - a cross sectional analysis.

Background: While maternal health is a priority in international goals, maternal health outcomes remain poor in many regions of the world. In Brazil, maternal mortality has decreased over the past decades, but the country's maternal mortality ratio is higher than over half of all countries at 59 deaths per 100,000 live births. The Brazilian maternal health care model facilitates high rates of medical interventions during labor and childbirth; 56% of births are by cesarean birth.

Integrative structure determination reveals functional global flexibility for an ultra-multimodular arabinanase.

AbnA is an extracellular GH43 α-L-arabinanase from Geobacillus stearothermophilus, a key bacterial enzyme in the degradation and utilization of arabinan. We present herein its full-length crystal structure, revealing the only ultra-multimodular architecture and the largest structure to be reported so far within the GH43 family. Additionally, the structure of AbnA appears to contain two domains belonging to new uncharacterized carbohydrate-binding module (CBM) families.

From wet nurses to orphaned mothers: reflections on the right to maternity in Brazil.

This article addresses the compulsory seizing of children from vulnerable women in Brazil. Its objectives were: to discuss the violation of the right to maternity; to present the imposed restrictions especially on poor, black and indigenous women; the strategic control over their lives and children, and the resistance movements that oppose segregation. The sources of the research were: narratives of women in vulnerable situations, family members and health workers; interviews with strategic actors; document analysis; field journal.

Maternal Mortality in Brazil, 1990 to 2019: a systematic analysis of the Global Burden of Disease Study 2019.

Introduction: Maternal death continues to be one of the most challenging public health problems that needs to be addressed in low and middle-income countries. The objective of this study was to describe the problem of maternal death in Brazil, using estimates from the Global Burden of Disease Study (GBD).

Methods: This study used data from the GBD 2019 to show the numbers of deaths and the Maternal Mortality Ratio (MMR) - number of deaths/100,000 live births - in Brazil and its 27 Federated Units (FU), for ages 10 to 54 years, from 1990 to 2019.

Localization atomic force microscopy.

Understanding structural dynamics of biomolecules at the single-molecule level is vital to advancing our knowledge of molecular mechanisms. Currently, there are few techniques that can capture dynamics at the sub-nanometre scale and in physiologically relevant conditions. Atomic force microscopy (AFM) has the advantage of analysing unlabelled single molecules in physiological buffer and at ambient temperature and pressure, but its resolution limits the assessment of conformational details of biomolecules.

Brazilian women's use of evidence-based practices in childbirth after participating in the Senses of Birth intervention: A mixed-methods study.

Brazil has a cesarean rate of 56% and low use of Intrapartum Evidence-based Practices (IEBP) of 3.4%, reflecting a medically centered and highly interventionist maternal health care model. The Senses of Birth (SoB) is a health education intervention created to promote normal birth, use of EBP, and reduce unnecessary c-sections.

Diselenide crosslinks for enhanced and simplified oxidative protein folding.

The in vitro oxidative folding of proteins has been studied for over sixty years, providing critical insight into protein folding mechanisms. Hirudin, the most potent natural inhibitor of thrombin, is a 65-residue protein with three disulfide bonds, and is viewed as a folding model for a wide range of disulfide-rich proteins. Hirudin's folding pathway is notorious for its highly heterogeneous intermediates and scrambled isomers, limiting its folding rate and yield in vitro.

Cross-utilization of β-galactosides and cellobiose in .

Strains of the Gram-positive, thermophilic bacterium possess elaborate systems for the utilization of hemicellulolytic polysaccharides, including xylan, arabinan, and galactan. These systems have been studied extensively in strains T-1 and T-6, representing microbial models for the utilization of soil polysaccharides, and many of their components have been characterized both biochemically and structurally. Here, we characterized routes by which utilizes mono- and disaccharides such as galactose, cellobiose, lactose, and galactosyl-glycerol.

Changes in perceived knowledge about childbirth among pregnant women participating in the Senses of Birth intervention in Brazil: a cross-sectional study.

Background: Senses of Birth (SoB) is a health education intervention in Brazil that aims to reduce unnecessary cesareans in the country by providing information on reproductive rights, benefits and risks of childbirth, and use of intrapartum evidence-based practices (EBP) which are recommended by the World Health Organization (WHO) to improve childbirth outcomes and satisfaction. This study evaluates the impact of the SoB on pregnant women's perceived knowledge about normal birth (NB), cesarean, and use of EBP.

Methods: 1287 pregnant women answered a structured survey immediately after their visit to the intervention, between March 2015 and March 2016.

Carbohydrate-Binding Capability and Functional Conformational Changes of AbnE, an Arabino-oligosaccharide Binding Protein.

ABC importers are membrane proteins responsible for the transport of nutrients into the cells of prokaryotes. Although the structures of ABC importers vary, all contain four conserved domains: two nucleotide-binding domains (NBDs), which bind and hydrolyze ATP, and two transmembrane domains (TMDs), which help translocate the substrate. ABC importers are also dependent on an additional protein component, a high-affinity substrate-binding protein (SBP) that specifically binds the target ligand for delivery to the appropriate ABC transporter.

Change in the profile of causes of death after investigation of hospital deaths in Belo Horizonte, Brazil, 2017.

Introduction: Deaths certified with ill-defined causes or garbage codes (GC) compromise the analysis of mortality and its use for planning and evaluation of public health policies. The hospital investigation of these causes is one of the strategies qualifying the profile of mortality in the country.

Objective: To evaluate the change in the hospital mortality profile after investigation of deaths certified with GC in 2017 in Belo Horizonte, Brazil.

Obstetric violence: influences of the Senses of Birth exhibition in pregnant women childbirth experience.

Excessive interventions during labor in Brazil have been reported as disrespect and abuse and contribute to neonatal and maternal morbidity and mortality. The Senses of Birth exhibition aims to encourage normal birth to promote health and improve the experience of childbirth in the country. This article describes the characteristics of 555 women who visited the exhibition during pregnancy and their perception of obstetric violence in childbirth.

[Meanings of the childbirth plan for women that participated in the Meanings of Childbirth Exhibit].

This study aimed to analyze the perspective of women who used the childbirth plan on their childbirth experience, the meanings of the childbirth plan and its components, and the relationship between the childbirth plan and labor and delivery. A qualitative descriptive study was performed. Data were collected with the questionnaire Meanings of Birth - Postpartum Contacts, applied via telephone contact.

Substitution of an Internal Disulfide Bridge with a Diselenide Enhances both Foldability and Stability of Human Insulin.

Insulin analogues, mainstays in the modern treatment of diabetes mellitus, exemplify the utility of protein engineering in molecular pharmacology. Whereas chemical syntheses of the individual A and B chains were accomplished in the early 1960s, their combination to form native insulin remains inefficient because of competing disulfide pairing and aggregation. To overcome these limitations, we envisioned an alternative approach: pairwise substitution of cysteine residues with selenocysteine (Sec, U).

The Senses of Birth intervention to decrease cesarean and prematurity rates in Brazil.

Objective: To increase knowledge and promote cultural change toward valuing normal birth, and to lower rates of cesarean and unnecessary interventions during childbirth in Brazil via the Senses of Birth (SoB) exhibition.

Methods: The SoB intervention targeted 22 621 participants in three Brazilian cities in 2015. The effects of the exhibition in knowledge, perceptions, and preferences regarding childbirth were analyzed in a multi-method study.

BPTI folding revisited: switching a disulfide into methylene thioacetal reveals a previously hidden path.

Bovine pancreatic trypsin inhibitor (BPTI) is a 58-residue protein that is stabilized by three disulfide bonds at positions 5-55, 14-38 and 30-51. Widely studied for about 50 years, BPTI represents a folding model for many disulfide-rich proteins. In the study described below, we replaced the solvent exposed 14-38 disulfide bond with a methylene thioacetal bridge in an attempt to arrest the folding pathway of the protein at its two well-known intermediates, N' and N*.

Structural basis for enzyme bifunctionality - the case of Gan1D from Geobacillus stearothermophilus.

Unlabelled: 6-phospho-β-glucosidases and 6-phospho-β-galactosidases are enzymes that hydrolyze the β-glycosidic bond between a terminal non-reducing glucose-6-phosphate (Glc6P) or galactose-6-phosphate (Gal6P), respectively, and other organic molecules. Gan1D, a glycoside hydrolase (GH) belonging to the GH1 family, has recently been identified in a newly characterized galactan-utilization gene cluster in the bacterium Geobacillus stearothermophilus T-1. Gan1D has been shown to exhibit bifunctional activity, possessing both 6-phospho-β-galactosidase and 6-phospho-β-glucosidase activities.

Leading causes of child mortality in Brazil, in 1990 and 2015: estimates from the Global Burden of Disease study.

Objective:: To analyze under-5 mortality rates and leading causes in Brazil and states in 1990 and 2015, using the Global Burden of Disease Study (GBD) 2015 estimates.

Methods:: The main sources of data for all-causes under-5 mortality and live births estimates were the mortality information system, surveys, and censuses. Proportions and rates per 1,000 live births (LB) were calculated for total deaths and leading causes.

Structure-function relationships in Gan42B, an intracellular GH42 β-galactosidase from Geobacillus stearothermophilus.

Geobacillus stearothermophilus T-6 is a Gram-positive thermophilic soil bacterium that contains a battery of degrading enzymes for the utilization of plant cell-wall polysaccharides, including xylan, arabinan and galactan. A 9.4 kb gene cluster has recently been characterized in G.

Preliminary crystallographic analysis of Xyn52B2, a GH52 β-D-xylosidase from Geobacillus stearothermophilus T6.

Geobacillus stearothermophilus T6 is a thermophilic bacterium that possesses an extensive hemicellulolytic system, including over 40 specific genes that are dedicated to this purpose. For the utilization of xylan, the bacterium uses an extracellular xylanase which degrades xylan to decorated xylo-oligomers that are imported into the cell. These oligomers are hydrolyzed by side-chain-cleaving enzymes such as arabinofuranosidases, acetylesterases and a glucuronidase, and finally by an intracellular xylanase and a number of β-xylosidases.