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1.
Int J Gynaecol Obstet ; 167(2): 625-630, 2024 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38736305

RESUMO

OBJECTIVE: To determine the individual learning curves for cordocentesis in a low-cost simulator for maternal-fetal medicine (MFM) fellows. METHODS: This observational, descriptive, educational, and prospective study was performed from July through November 2022. After an introductory course based on a standardized technique for cordocentesis, each second-year MFM fellow who accepted to participate in the study performed this procedure using a low-cost simulation model, and experienced operators supervised the cordocenteses. Learning curves were then created using cumulative sum analysis (CUSUM). RESULTS: Seven second-year MFM fellows with no previous experience in cordocentesis accepted to participate in the study. A total of 2676 procedures were assessed. On average, residents performed 382 ± 70 procedures. The mean number of procedures to achieve proficiency was 369 ± 70, the overall success rate was 84.16%, and the corresponding failure rate was 15.84%. At the end of the study, all fellows were considered competent in cordocentesis. One fellow required 466 attempts to achieve competency, performing a total of 478 procedures, but the resident with the fewest attempts to reach competency required 219 procedures, completing 232 procedures. Some of the most frequent reasons for failed attempts included not reaching the indicated point for vascular access (20.99%) and being unable to retrieve the sample (69.10%). CONCLUSION: CUSUM analysis to assess learning curves, in addition to using low-cost simulation models, helped to appraise individualized learning, allowing an objective demonstration of competency for cordocentesis among MFM fellows.


Assuntos
Competência Clínica , Cordocentese , Curva de Aprendizado , Obstetrícia , Treinamento por Simulação , Humanos , Feminino , Estudos Prospectivos , Gravidez , Obstetrícia/educação , Treinamento por Simulação/economia , Treinamento por Simulação/métodos , Internato e Residência , Adulto , Bolsas de Estudo
2.
Diseases ; 12(3)2024 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-38534983

RESUMO

In mammals, the placenta is a connection between a mother and a new developing organism. This tissue has a protective function against some microorganisms, transports nutrients, and exchanges gases and excretory substances between the mother and the fetus. Placental tissue is mainly composed of chorionic villi functional units called trophoblasts (cytotrophoblasts, the syncytiotrophoblast, and extravillous trophoblasts). However, some viruses have developed mechanisms that help them invade the placenta, causing various conditions such as necrosis, poor perfusion, and membrane rupture which, in turn, can impact the development of the fetus and put the mother's health at risk. In this study, we collected the most relevant information about viral infection during pregnancy which can affect both the mother and the fetus, leading to an increase in the probability of vertical transmission. Knowing these mechanisms could be relevant for new research in the maternal-fetal context and may provide options for new therapeutic targets and biomarkers in fetal prognosis.

3.
Methods Mol Biol ; 2781: 15-25, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38502439

RESUMO

During human pregnancy, leukocytes that infiltrate the maternal-fetal interface play a major role in establishing a delicate balance between immune tolerance and functional response and setting the inflammatory process that leads to labor. Here we describe two methods for isolating immune cells from the chorioamniotic membranes (decidua parietalis) and placental blood (decidua basalis) that combine gentle enzymatic digestion, magnetic cell sorting, and density gradient. Isolated leukocytes can be immunophenotypified by flow cytometry, and both isolation methods are compatible with downstream cellular and molecular applications, such as cell culture, transcriptome, and proteome analyses.


Assuntos
Decídua , Placenta , Gravidez , Humanos , Feminino , Imunofenotipagem , Separação Celular/métodos , Leucócitos
4.
Rev. bras. enferm ; Rev. bras. enferm;77(3): e20230464, 2024. tab, graf
Artigo em Inglês | LILACS-Express | LILACS, BDENF - Enfermagem | ID: biblio-1569675

RESUMO

ABSTRACT Objectives: to develop and evaluate a Middle-Range Theory for the nursing diagnosis "Disrupted Mother-Fetus Dyad Risk" in high-risk pregnancies. Methods: this methodological study was conducted in two stages: theory development and evaluation. Dorothea Orem's General Nursing Model was used as the theoretical-conceptual foundation. Evaluation was conducted using the Delphi method with seven judges, and consensus was achieved when the Content Validity Index of the evaluated items was ≥ 0.80. Results: the theory identified 20 elements of the nursing diagnosis "Disrupted Mother-Fetus Dyad Risk" (10 risk factors, 4 at-risk populations, and 6 associated conditions), 14 propositions, and 1 pictogram. After two rounds of evaluation, the theory was considered consistent, with consensus reached for all items, each achieving a Content Validity Index ≥ 0.80. Conclusions: the Middle-Range Theory included biopsychosocial factors explaining the nursing phenomenon "Disrupted Mother-Fetus Dyad Risk," which aids in nurses' diagnostic reasoning.


RESUMEN Objetivos: desarrollar y evaluar una teoría de alcance intermedio para el diagnóstico de enfermería "Riesgo de Disrupción del Binomio Madre-Feto" en embarazos de alto riesgo. Métodos: este estudio metodológico se realizó en dos etapas: desarrollo y evaluación de la teoría. El modelo general de enfermería de Dorothea Orem se utilizó como base teórica-conceptual. La evaluación se realizó mediante el método Delphi con siete jueces, y se alcanzó el consenso cuando el Índice de Validez de Contenido de los ítems evaluados fue ≥ 0,80. Resultados: la teoría identificó 20 elementos del diagnóstico de enfermería "Riesgo de Disrupción del Binomio Madre-Feto" (10 factores de riesgo, 4 poblaciones en riesgo y 6 condiciones asociadas), 14 proposiciones y 1 pictograma. Después de dos rondas de evaluación, la teoría se consideró coherente, ya que se alcanzó el consenso en todos los ítems, cada uno logrando un Índice de Validez de Contenido ≥ 0,80. Conclusiones: la teoría de alcance intermedio incluyó factores biopsicosociales que explican el fenómeno de enfermería "Riesgo de Disrupción del Binomio Madre-Feto", lo cual ayuda en el razonamiento diagnóstico de las enfermeras.


RESUMO Objetivos: desenvolver e avaliar a Teoria de Médio Alcance para o diagnóstico de enfermagem "Risco de binômio mãe-feto perturbado" em gestantes de alto risco. Métodos: estudo metodológico desenvolvido em duas etapas: desenvolvimento e avaliação da teoria. Para a fundamentação teórico-conceitual, utilizou-se o Modelo Geral de Enfermagem de Dorothea Orem. A avaliação foi realizada por meio do método Delphi com 7 juízes, e o consenso foi obtido quando o Índice de Validade de Conteúdo dos itens avaliados foi ≥ 0,80. Resultados: a teoria apresentou 20 elementos do diagnóstico de enfermagem "Risco de binômio mãe-feto perturbado" (10 fatores de risco, 4 populações em risco e 6 condições associadas), 14 proposições e 1 pictograma. Além disso, após duas rodadas de avaliação, a teoria foi considerada consistente, pois houve consenso em todos os itens avaliados, que obtiveram um Índice de Validade de Conteúdo ≥ 0,80. Conclusões: a Teoria de Médio Alcance incluiu os fatores biopsicossociais que explicam o fenômeno de enfermagem "Risco de binômio mãe-feto perturbado", o que contribui para o raciocínio diagnóstico do enfermeiro.

5.
Front Immunol ; 14: 1243480, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37915581

RESUMO

Introduction: Toxoplasma gondii is the etiologic agent of toxoplasmosis, a disease that affects about one-third of the human population. Most infected individuals are asymptomatic, but severe cases can occur such as in congenital transmission, which can be aggravated in individuals infected with other pathogens, such as HIV-positive pregnant women. However, it is unknown whether infection by other pathogens, such as Trypanosoma cruzi, the etiologic agent of Chagas disease, as well as one of its proteins, P21, could aggravate T. gondii infection. Methods: In this sense, we aimed to investigate the impact of T. cruzi and recombinant P21 (rP21) on T. gondii infection in BeWo cells and human placental explants. Results: Our results showed that T. cruzi infection, as well as rP21, increases invasion and decreases intracellular proliferation of T. gondii in BeWo cells. The increase in invasion promoted by rP21 is dependent on its binding to CXCR4 and the actin cytoskeleton polymerization, while the decrease in proliferation is due to an arrest in the S/M phase in the parasite cell cycle, as well as interleukin (IL)-6 upregulation and IL-8 downmodulation. On the other hand, in human placental villi, rP21 can either increase or decrease T. gondii proliferation, whereas T. cruzi infection increases T. gondii proliferation. This increase can be explained by the induction of an anti-inflammatory environment through an increase in IL-4 and a decrease in IL-6, IL-8, macrophage migration inhibitory factor (MIF), and tumor necrosis factor (TNF)-α production. Discussion: In conclusion, in situations of coinfection, the presence of T. cruzi may favor the congenital transmission of T. gondii, highlighting the importance of neonatal screening for both diseases, as well as the importance of studies with P21 as a future therapeutic target for the treatment of Chagas disease, since it can also favor T. gondii infection.


Assuntos
Doença de Chagas , Toxoplasmose , Trypanosoma cruzi , Recém-Nascido , Humanos , Feminino , Gravidez , Placenta/patologia , Interleucina-8 , Toxoplasmose/patologia , Doença de Chagas/patologia , Proteínas Recombinantes
6.
Am J Obstet Gynecol ; 2023 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-37926134

RESUMO

The combination of deserts in maternal-fetal medicine coverage across the United States and the COVID-19 pandemic accelerated the implementation of telemedicine programs for maternal-fetal medicine care delivery. Although telemedicine-based care has the potential to facilitate timely access to maternal-fetal medicine services, which can improve maternal and neonatal outcomes, telemedicine is a relatively novel healthcare modality that needs to be implemented strategically. As with any medical service, telemedicine care requires rigorous evaluation to assess outcomes and ensure quality. Important health policy considerations, including access to services and insurance coverage, have substantial implications for equity in the implementation of telemedicine, particularly for reproductive healthcare following the 2022 United States Supreme Court decision in Dobbs v Jackson Women's Health Organization that overturned the constitutional right to an abortion. Investing resources and advocating for a rigorous, widely accessible telemedicine infrastructure at this crucial moment will establish an important foundation for more equitable pregnancy care. Key advocacy priorities for maternal-fetal medicine telemedicine include (1) expanding insurance coverage of telemedicine across payers, regardless of geographic location; (2) advocating for interstate licensure parity; (3) increasing access to affordable Internet and digital literacy training; and (4) ensuring access to reproductive healthcare, including abortion care, delivered via telemedicine.

7.
J Neuroimmunol ; 383: 578194, 2023 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-37683302

RESUMO

Altered immune response during pregnancy has been associated with ASD susceptibility. HLA-G is expressed by the trophoblast at the maternal/fetal interface and induces allogenic tolerance toward the fetus. A 14-bp insertion in the HLA-G 3'UTR (rs371194629) was associated with reduced levels of HLA-G. We aimed to assess the influence of the HLA-G*14 bp indel variant in ASD susceptibility and symptomatology in a Brazilian admixed sample. The insertion genotype (14 bp+/14 bp+) was firstly associated with hetero aggression, but statistical significance was lost after correction (p = 0.035, pcorrected = 0.35). No association between the HLA-G variant and susceptibility to ASD or differential clinical manifestations were observed.

8.
Chem Biol Interact ; 384: 110716, 2023 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-37722575

RESUMO

Congenital toxoplasmosis, caused by the opportunistic protozoan parasite T. gondii, can cause stillbirths, miscarriages and fetal abnormalities, as well as encephalitis and chorioretinitis in newborns. Available treatment options rely on antiparasitic drugs that have been linked to serious side effects, high toxicity and the development of drug-resistant parasites. The search for alternative therapeutics to treat this disease without acute toxicity for the mother and child is essential for the advancement of current therapeutic procedures. The present study aimed to unravel the mode of the anti-T. gondii action of Rottlerin, a natural polyphenol with multiple pharmacological properties described. Herein, we further assessed the antiparasitic activity of Rottlerin against T. gondii infection on the human trophoblastic cells (BeWo cells) and, for the first time, on human villous explants. We found that non-cytotoxic doses of Rottlerin impaired early and late steps of parasite infection with an irreversible manner in BeWo cells. Rottlerin caused parasite cell cycle arrest in G1 phase and compromised the ability of tachyzoites to infect new cells, thus highlighting the possible direct action on parasites. An additional and non-exclusive mechanism of action of Rottlerin involves the modulation of host cell components, by affecting lipid droplet formation, mitochondrial function and upregulation of the IL-6 and MIF levels in BeWo cells. Supporting our findings, Rottlerin also controlled T. gondii proliferation in villous explants with low toxicity and reduced the IL-10 levels, a cytokine associated with parasite susceptibility. Collectively, our results highlighted the potential use of Rottlerin as a promising tool to prevent and/or treat congenital toxoplasmosis.

9.
Int J Nurs Knowl ; 2023 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-37615669

RESUMO

PURPOSE: To obtain evidence of the clinical validity of the nursing diagnosis (ND) risk for disturbed maternal-fetal dyad in high-risk pregnancy. METHOD: Causal validation of the ND through a case-control study performed in a university hospital with 155 high-risk pregnant women: 31 cases and 124 controls. A causal association was found between the ND etiological factors and the occurrence of disruption of the symbiotic maternal-fetal dyad; an association was verified when the etiological factor presented a p-value <0.05 and odds ratio >1. FINDINGS: The risk factor absent-inadequate prenatal care; populations at risk, such as young-advanced maternal age and economically disadvantaged pregnant women; and association conditions, such as maternal conditions and compromised fetal oxygen transport, increased the outcome likelihood. The associated condition maternal illnesses appeared as a protective factor. CONCLUSIONS: Evidence of clinical validity of the ND risk for disturbed maternal-fetal dyad was obtained, and an association between etiological factors and disruption of the symbiotic maternal-fetal dyad was found. IMPLICATIONS FOR NURSING PRACTICE: The results contribute to advance scientific knowledge in nursing teaching, research, and practice and support the nursing process in high-risk pregnancies.

10.
Arch Endocrinol Metab ; 67(6): e220483, 2023 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-37364140

RESUMO

Objective: Pregnant women with type 1 diabetes (T1D) have an increased risk of maternal-fetal complications. Regarding treatment, continuous subcutaneous insulin infusion (CSII) has advantages compared to multiple daily injections (MDI), but data about the best option during pregnancy are limited. This study's aim was to compare maternal-fetal outcomes among T1D patients treated with CSII or MDI during pregnancy. Subjects and methods: This study evaluated 174 pregnancies of T1D patients. Variables of interest were compared between the groups (CSII versus MDI), and logistic regression analysis was performed (p < 0.05). Results: Of the 174 included pregnancies, CSII was used in 21.3% (37) and MDI were used in 78.7% (137). HbA1c values improved throughout gestation in both groups, with no difference in the first and third trimesters. The frequency of cesarean section was significantly higher in the CSII group [94.1 vs. 75.4%, p = 0.017], but there was no significant difference in the frequency of other complications, such as miscarriage, premature delivery and preeclampsia. The mean birth weight and occurrence of neonatal complications were also similar, except for the proportion of congenital malformations, which was significantly lower in the CSII group [2.9 vs. 15.6%, p = 0.048]. In regression analysis, the association of CSII with cesarean section and malformations lost significance after adjusting for HbA1c and other covariates of interest. Conclusion: In this study, we observed a higher frequency of cesarean section and a lower occurrence of congenital malformations in the CSII group, but the adjusted results might indicate that these associations are influenced by glycemic control.


Assuntos
Diabetes Mellitus Tipo 1 , Gravidez em Diabéticas , Recém-Nascido , Gravidez , Humanos , Feminino , Diabetes Mellitus Tipo 1/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Estudos de Coortes , Gestantes , Hemoglobinas Glicadas , Brasil , Cesárea , Gravidez em Diabéticas/tratamento farmacológico , Gravidez em Diabéticas/induzido quimicamente , Insulina/uso terapêutico , Atenção à Saúde , Sistemas de Infusão de Insulina
11.
Front Immunol ; 14: 1212736, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37359537

RESUMO

The close interaction between fetal and maternal cells during pregnancy requires multiple immune-endocrine mechanisms to provide the fetus with a tolerogenic environment and protection against any infectious challenge. The fetal membranes and placenta create a hyperprolactinemic milieu in which prolactin (PRL) synthesized by the maternal decidua is transported through the amnion-chorion and accumulated into the amniotic cavity, where the fetus is bedded in high concentrations during pregnancy. PRL is a pleiotropic immune-neuroendocrine hormone with multiple immunomodulatory functions mainly related to reproduction. However, the biological role of PRL at the maternal-fetal interface has yet to be fully elucidated. In this review, we have summarized the current information on the multiple effects of PRL, focusing on its immunological effects and biological significance for the immune privilege of the maternal-fetal interface.


Assuntos
Decídua , Prolactina , Gravidez , Feminino , Humanos , Placenta , Membranas Extraembrionárias , Líquido Amniótico
12.
Medicina (B.Aires) ; Medicina (B.Aires);83(supl.2): 2-5, abr. 2023. graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1430820

RESUMO

Resumen La pandemia COVID-19 se extendió por todo por a la enorme capacidad del coronavirus SARS-CoV-2 para transmitirse entre humanos. El COVID-19 es una amenaza para la salud pública mundial. La entrada de este virus en las células se ve muy facilitada por la presencia de la enzima convertidora de angiotensina 2 (ACE2) en la membrana celular. Hoy en día no tenemos un conocimiento preciso de cómo se expresa este receptor en el cerebro durante el desarrollo humano y, como consecuencia, no sabemos si las células neurales en desarrollo son susceptibles de ser infectadas a través de la transmisión de madre a feto. Revisamos en este artículo los conocimientos sobre la expresión de ACE2 en el cerebro humano en desarrollo, con especial atención a la etapa fetal. Esta etapa corresponde al periodo de formación de la corteza cerebral. La posibilidad de infección por SARS-CoV-2 durante el periodo fetal puede alterar el desarrollo normal de la corteza cerebral. Así pues, aunque se han publicado pocos casos demostrando la transmisión vertical de la infección por SARS-CoV-2, el gran número de jóvenes infectados puede representar un problema sanitario que necesite seguimiento, por la posibilidad de que se originen alteraciones cognitivas y anomalías en el desarrollo de los circuitos corticales, que pueden representar predisposición a padecer problemas mentales a lo largo de la vida.


Abstract The COVID-19 pandemic spread around the world due to the enormous transmission of the SARS-CoV-2 among humans. COVID-19 represents a threat to global public health. The entry of this virus into cells is greatly facilitated by the presence of angiotensin-converting enzyme 2 (ACE2) in the cell membrane. Today we do not have a precise understanding of how this receptor expresses in the brain during human development and, as a consequence, we do not know whether neural cells in the developing brain are susceptible to infection. We review the knowledge about ACE2 expression in the developing human brain, with special attention to the fetal stage. This stage corresponds to the period of the cerebral cortex formation. Therefore, SARS-CoV-2 infection during the fetal period may alter the normal development of the cerebral cortex. Although few cases have been published demonstrating vertical transmission of SARS-CoV-2 infection, the large number of infected young people may represent a problem which requires health surveillance, due to the possibility of cognitive alterations and abnormalities in the development of cortical circuits that may represent a predisposition to mental problems later in life.

13.
Front Cell Infect Microbiol ; 13: 1130901, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36968102

RESUMO

Toxoplasma gondii is a ubiquitous apicomplexan parasite that can infect virtually any warm-blooded animal. Acquired infection during pregnancy and the placental breach, is at the core of the most devastating consequences of toxoplasmosis. T. gondii can severely impact the pregnancy's outcome causing miscarriages, stillbirths, premature births, babies with hydrocephalus, microcephaly or intellectual disability, and other later onset neurological, ophthalmological or auditory diseases. To tackle T. gondii's vertical transmission, it is important to understand the mechanisms underlying host-parasite interactions at the maternal-fetal interface. Nonetheless, the complexity of the human placenta and the ethical concerns associated with its study, have narrowed the modeling of parasite vertical transmission to animal models, encompassing several unavoidable experimental limitations. Some of these difficulties have been overcome by the development of different human cell lines and a variety of primary cultures obtained from human placentas. These cellular models, though extremely valuable, have limited ability to recreate what happens in vivo. During the last decades, the development of new biomaterials and the increase in stem cell knowledge have led to the generation of more physiologically relevant in vitro models. These cell cultures incorporate new dimensions and cellular diversity, emerging as promising tools for unraveling the poorly understood T. gondii´s infection mechanisms during pregnancy. Herein, we review the state of the art of 2D and 3D cultures to approach the biology of T. gondii pertaining to vertical transmission, highlighting the challenges and experimental opportunities of these up-and-coming experimental platforms.


Assuntos
Toxoplasma , Toxoplasmose , Animais , Humanos , Gravidez , Feminino , Placenta/parasitologia , Toxoplasmose/parasitologia , Transmissão Vertical de Doenças Infecciosas , Modelos Animais
14.
BMC Health Serv Res ; 23(1): 259, 2023 Mar 16.
Artigo em Inglês | MEDLINE | ID: mdl-36922841

RESUMO

INTRODUCTION: Contingency measures due to the COVID-19 pandemic limited access to routine prenatal care for pregnant women, increasing the risk of pregnancy complications due to poor prenatal follow-up, especially in those patients at high obstetric risk. This prompted the implementation and adaptation of telemedicine. OBJECTIVE: We aim to evaluate the maternal and perinatal outcomes of patients who received prenatal care in-person and by telemedicine. METHODS: We conducted a retrospective observational cohort study of pregnant women who received exclusive in-person and alternate (telemedicine and in-person) care from March to December 20,202, determining each group's maternal and neonatal outcomes. RESULTS: A total of 1078 patients were included, 156 in the mixed group and 922 in the in-person group. The patients in the mixed group had a higher number of prenatal controls (8 (6-9) vs 6 (4-8) p < 0.001), with an earlier gestational age at onset (7.1 (6-8.5) vs 9.3 (6.6-20.3), p < 0.001), however, they required a longer hospital stay (26 (16,67%) vs 86 (9,33%), p = 0.002) compared to those attended in-person; there were no significant differences in the development of obstetric emergencies, maternal death or neonatal complications. DISCUSSION: Incorporating telemedicine mixed with in-person care could be considered as an alternative for antenatal follow-up of pregnant women in low- and middle-income countries with barriers to timely and quality health care access.


Assuntos
COVID-19 , Telemedicina , Recém-Nascido , Gravidez , Feminino , Humanos , Cuidado Pré-Natal , Colômbia/epidemiologia , Estudos Retrospectivos , Pandemias , COVID-19/epidemiologia
15.
Medicina (B Aires) ; 83 Suppl 2: 2-5, 2023 Mar.
Artigo em Espanhol | MEDLINE | ID: mdl-36820474

RESUMO

The COVID-19 pandemic spread around the world due to the enormous transmission of the SARSCoV-2 among humans. COVID-19 represents a threat to global public health. The entry of this virus into cells is greatly facilitated by the presence of angiotensin-converting enzyme 2 (ACE2) in the cell membrane. Today we do not have a precise understanding of how this receptor expresses in the brain during human development and, as a consequence, we do not know whether neural cells in the developing brain are susceptible to infection. We review the knowledge about ACE2 expression in the developing human brain, with special attention to the fetal stage. This stage corresponds to the period of the cerebral cortex formation. Therefore, SARS-CoV-2 infection during the fetal period may alter the normal development of the cerebral cortex. Although few cases have been published demonstrating vertical transmission of SARS-CoV-2 infection, the large number of infected young people may represent a problem which requires health surveillance, due to the possibility of cognitive alterations and abnormalities in the development of cortical circuits that may represent a predisposition to mental problems later in life.


La pandemia COVID-19 se extendió por todo por a la enorme capacidad del coronavirus SARS-CoV-2 para transmitirse entre humanos. El COVID-19 es una amenaza para la salud pública mundial. La entrada de este virus en las células se ve muy facilitada por la presencia de la enzima convertidora de angiotensina 2 (ACE2) en la membrana celular. Hoy en día no tenemos un conocimiento preciso de cómo se expresa este receptor en el cerebro durante el desarrollo humano y, como consecuencia, no sabemos si las células neurales en desarrollo son susceptibles de ser infectadas a través de la transmisión de madre a feto. Revisamos en este artículo los conocimientos sobre la expresión de ACE2 en el cerebro humano en desarrollo, con especial atención a la etapa fetal. Esta etapa corresponde al periodo de formación de la corteza cerebral. La posibilidad de infección por SARS-CoV-2 durante el periodo fetal puede alterar el desarrollo normal de la corteza cerebral. Así pues, aunque se han publicado pocos casos demostrando la transmisión vertical de la infección por SARS-CoV-2, el gran número de jóvenes infectados puede representar un problema sanitario que necesite seguimiento, por la posibilidad de que se originen alteraciones cognitivas y anomalías en el desarrollo de los circuitos corticales, que pueden representar predisposición a padecer problemas mentales a lo largo de la vida.


Assuntos
COVID-19 , SARS-CoV-2 , Humanos , Adolescente , Enzima de Conversão de Angiotensina 2/metabolismo , Peptidil Dipeptidase A , Pandemias , Encéfalo
16.
Rev. bioét. (Impr.) ; 31: e3010PT, 2023. tab
Artigo em Português | LILACS | ID: biblio-1449534

RESUMO

Resumo A infecção congênita pela sífilis é uma doença que, apesar dos esforços públicos, ainda se mantém na rotina do sistema de saúde. Embora haja métodos de prevenção efetivos e muito disseminados, tratamento com alto custo-benefício e disponível no Sistema Único de Saúde, além de assistência pré-natal com alta cobertura, as taxas epidemiológicas da enfermidade continuam relevantes e preocupantes. Umas das barreiras à erradicação desse cenário é a recusa terapêutica da genitora. Com isso, indagações importantes são levantadas, como a responsabilidade médica em relação à recusa, a responsabilidade da gestante para com o nascituro e as implicações jurídicas que perpassam essa problemática. O propósito deste artigo é responder a essas questões e suas repercussões bioéticas e jurídicas.


Abstract Despite public policies, congenital syphilis infection remains a reality in the health system routine. Moreover, its epidemiological rates continue to be relevant and worrisome despite widespread and effective preventive methods, highly cost-effective treatments available in the Unified Health System, and high-coverage pre-natal care. A major obstacle to eradicating this scenario is treatment refusal by the progenitor. Important questions regarding medical responsibility in relation to refusal, the pregnant woman's responsibility towards the unborn child, and the legal implications involved arise from this context. This article seeks to answer these questions and their legal and bioethical repercussions.


Resumen La sífilis congénita es una enfermedad que aún sigue en la rutina del sistema de salud a pesar de los esfuerzos públicos. Aunque existen métodos de prevención efectivos y generalizados, los tratamientos con alto costo-beneficio y disponibles en el Sistema Único de Salud, además de la atención prenatal con alta cobertura, las tasas epidemiológicas de la enfermedad siguen siendo relevantes y preocupantes. Una de las barreras para su erradicación es el rechazo terapéutico de la madre. Por lo tanto, se plantean cuestiones importantes, como la responsabilidad médica con relación al rechazo, la responsabilidad de la mujer embarazada por el feto y las implicaciones legales que impregnan este problema. El propósito de este artículo es responder a estos interrogantes y sus repercusiones bioéticas y legales.


Assuntos
Humanos , Feminino , Gravidez , Cuidado Pré-Natal , Direitos Civis/legislação & jurisprudência , Gravidez de Alto Risco , Direitos do Paciente , Direito à Saúde
17.
Einstein (São Paulo, Online) ; 21: eAO0230, 2023. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1430291

RESUMO

ABSTRACT Objective To assess the effects of enfuvirtide on pregnancy in albino rats and their fetuses. Methods Forty pregnant EPM 1 Wistar rats were randomly allocated into four groups: control (E) (distilled water twice/day), G1 (4mg/kg/day enfuvirtide), G2 (12mg/kg/day enfuvirtide), and G3 (36mg/kg/day enfuvirtide) groups. On the 20th day of gestation, the rats were anesthetized and subjected to cesarean section. Their blood was collected for laboratory analysis, and they were sacrificed. The offspring's fragments of their kidneys, liver, and placentas and the maternal rats' fragments of their lungs, kidneys, and liver were separated in the immediate postpartum period for light microscopy analysis. Results No maternal deaths occurred. In the second week at the end of pregnancy, the mean weight of the G3 Group was significantly lower than that of the G2 Group (p=0.029 and p=0.028, respectively). Analyzing blood laboratory parameters, the G1 Group had the lowest mean amylase level, and the G2 Group had the lowest mean hemoglobin level and the highest mean platelet count. In the morphological analysis, there were no changes in organs, such as the kidneys and liver, in both the maternal rats and offspring. Three maternal rats in the G3 Group had pulmonary inflammation in the lungs. Conclusion Enfuvirtide has no significant adverse effects on pregnancy, conceptual products, or functional alterations in maternal rats.

18.
Ginecol. obstet. Méx ; Ginecol. obstet. Méx;91(5): 382-388, ene. 2023. graf
Artigo em Espanhol | LILACS-Express | LILACS | ID: biblio-1506272

RESUMO

Resumen ANTECEDENTES: El mielomeningocele es el defecto del tubo neural más frecuente; se registra un caso por cada 1000 nacidos vivos. Es más frecuente en mujeres, que resultan con secuelas discapacitantes, entre ellas las urológicas. Pueden subsanarse con diferentes técnicas quirúrgicas y derivaciones urológicas complejas que las predispone a infecciones de vías urinarias de repetición y, cuando hay embarazo, complicaciones materno-fetales y dificultad para el acceso quirúrgico, en caso de cesárea. CASO CLÍNICO: Paciente con 14 semanas de embarazo, 27 años de edad, con diagnóstico de mielomeningocele y vesicoplastia, con múltiples infecciones urinarias y ruptura de membranas pretérmino. Finalización del embarazo por cesárea a las 33 semanas, por indicación de las condiciones fetales. La técnica de la cesárea se modificó para no dañar la cistoplastia y evitar complicaciones con las adherencias en la pelvis. CONCLUSIONES: El mejor pronóstico materno-fetal en pacientes con derivación urológica compleja se consigue con la búsqueda intencionada de infecciones urinarias y tratamiento oportuno y adecuado, además de una planificación multidisciplinaria al momento de la finalización del embarazo.


Abstract BACKGROUND: Myelomeningocele is the most common neural tube defect; one case per 1000 live births is reported. It is more frequent in females, resulting in disabling sequelae, including urological sequelae. They can be corrected with different surgical techniques and complex urological derivations that predispose them to repeated urinary tract infections and, when there is pregnancy, maternal-fetal complications and difficulty for surgical access, in case of cesarean section. CLINICAL CASE: Patient 14 weeks pregnant, 27 years old, diagnosed with myelomeningocele and vesicoplasty, with multiple urinary tract infections and preterm rupture of membranes. Termination of pregnancy by cesarean section at 33 weeks, due to fetal conditions. The cesarean section technique was modified so as not to damage the cystoplasty and to avoid complications with adhesions in the pelvis. CONCLUSIONS: The best maternal-fetal prognosis in patients with complex urologic diversion is achieved with the intentional search for urinary tract infections and timely and adequate treatment, in addition to multidisciplinary planning at the time of termination of pregnancy.

19.
Artigo em Inglês | LILACS | ID: biblio-1440907

RESUMO

Abstract Objectives: this study aimed to explore a set of factors associated with lower maternal-fetal attachment (MFA) in pregnant women. Methods: this is a cross-sectional study corresponding to the second wave of a cohort study with a population-based sample of pregnant women in the South of Brazil. The maternal-fetal attachment scale (MFAS) was used to measure MFA. Bivariate analysis was performed using the t-test and ANOVA. The variables that presented p<0.20 were taken for multivariate analysis, through linear regression, in order to control possible confounding factors. Results: a total of 840 pregnant women were included. Pregnant women who had lower MFA means were those who did not live with a partner (B=-3.8 [CI95%=-6.0; -1.7]), those between the first and second trimester of pregnancy (B=-4.3 [CI95%=-5.9; -2.6]), those who did not have support from their mother during pregnancy (B=-2.4 [CI95%=-4.6; -0.2]), and those with depressive symptoms (B=-4.9 [CI95%=-7.4; -2.5]). Conclusions: the results showed that a higher MFA it is associated with an adequate support network during pregnancy, better maternal mental health, and with an advanced pregnancy. Early evaluation of MFA and effort to promote an adequate prenatal bond, focusing on maternal psychological and emotional aspects are strongly suggested.


Resumo Objetivos: explorar um conjunto de fatores associados ao menor apego materno-fetal (AMF) em gestantes. Métodos: trata-se de um estudo transversal, correspondente à segunda fase de um estudo de coorte com uma amostra de base populacional de gestantes no sul do Brasil. Foi utilizada a Escala de Apego Materno-Fetal (EAMF) para medir o AMF. A análise bivariada foi realizada através do teste t e ANOVA. As variáveis que apresentaram p<0,20 foram levadas para análise multivariada, por meio de regressão linear, a fim de controlar possíveis fatores de confusão. Resultados: foram incluídas 840 gestantes. As gestantes que apresentaram menores médias de AMF foram aquelas que não moravam com um companheiro (B=-3,8 [IC95%=-6,0; -1,7]), que estavam entre o primeiro e o segundo trimestre de gestação (B=-4,3 [IC95%=-5,9; -2,6]), que não tiveram o apoio da mãe durante a gestação (B=-2,4 [IC95%=-4,6; -0,2]) e que apresentaram sintomas depressivos (B=-4,9 [IC95%=-7,4; -2,5]). Conclusões: os resultados mostraram que um maior AMF está associado a presença de uma rede de apoio adequada na gravidez, melhor saúde mental materna e a uma gestação avançada. A avaliação precoce do AMF e a promoção de um vínculo pré-natal adequado, com foco nos aspectos psicológicos e emocionais maternos são fortemente sugeridos.


Assuntos
Humanos , Feminino , Gravidez , Relações Materno-Fetais/psicologia , Saúde Materna , Fatores Sociais , Brasil , Estudos Transversais , Análise de Variância , Gestantes
20.
Arch. endocrinol. metab. (Online) ; 67(6): e220483, Mar.-Apr. 2023. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1447280

RESUMO

ABSTRACT Objective: Pregnant women with type 1 diabetes (T1D) have an increased risk of maternal-fetal complications. Regarding treatment, continuous subcutaneous insulin infusion (CSII) has advantages compared to multiple daily injections (MDI), but data about the best option during pregnancy are limited. This study's aim was to compare maternal-fetal outcomes among T1D patients treated with CSII or MDI during pregnancy. Subjects and methods: This study evaluated 174 pregnancies of T1D patients. Variables of interest were compared between the groups (CSII versus MDI), and logistic regression analysis was performed (p < 0.05). Results: Of the 174 included pregnancies, CSII was used in 21.3% (37) and MDI were used in 78.7% (137). HbA1c values improved throughout gestation in both groups, with no difference in the first and third trimesters. The frequency of cesarean section was significantly higher in the CSII group [94.1 vs. 75.4%, p = 0.017], but there was no significant difference in the frequency of other complications, such as miscarriage, premature delivery and preeclampsia. The mean birth weight and occurrence of neonatal complications were also similar, except for the proportion of congenital malformations, which was significantly lower in the CSII group [2.9 vs. 15.6%, p = 0.048]. In regression analysis, the association of CSII with cesarean section and malformations lost significance after adjusting for HbA1c and other covariates of interest. Conclusion: In this study, we observed a higher frequency of cesarean section and a lower occurrence of congenital malformations in the CSII group, but the adjusted results might indicate that these associations are influenced by glycemic control.

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