RESUMO
Este trabalho tem o objetivo de analisar as concepções de maternidade para mulheres inférteis de diferentes níveis socioeconômicos que estão em tratamento de reprodução assistida. Trata-se de um estudo qualitativo, descritivo, que utilizou como instrumento uma entrevista semiestruturada e contemplou temas como o significado de família, desejo/expectativas sobre filho e gestação e expectativas sobre a maternidade. Participaram da pesquisa 48 mulheres inférteis acima de 35 anos que usam tecnologias de reprodução assistida de alta complexidade em instituições privada e pública. Os dados foram tratados pela análise de conteúdo em que emergiram os temas: representações sociais da família; representações sociais da maternidade; expectativas com a gestação e os modelos maternos; e o filho imaginado. As participantes representaram a família de forma positiva, como um sistema de suporte, de fundação e origem de amor, configurando-a como um laço social. Por outro lado, as concepções de família com base na consanguinidade também estiveram presentes, representando a família pela perpetuação da espécie e pela importância do laço biológico. A maternidade foi marcada por significativa idealização, sendo vista como um papel gratificante e de realização da feminilidade. O peso da cobrança social para procriar também foi sentido como um dever a cumprir e que, na impossibilidade de se realizar, gera sentimentos de inferioridade, menos-valia, impotência e inadequação perante a sociedade, o que reforça o estigma da infertilidade. Tais resultados apontam a importância de reflexões sobre o papel da mulher na nossa cultura, visto que a maternidade é ainda utilizada como medida para o sucesso ou fracasso feminino. Faz-se necessário também refletir sobre a possibilidade da maior inserção do trabalho psicológico na reprodução assistida, visto a carga emocional e social envolvidas nesse processo.(AU)
This study aimed to analyze the conceptions of motherhood for infertile women from different socioeconomic levels who are undergoing assisted reproduction treatment. This is a qualitative and descriptive study that used a semi-structured interview as an instrument and included topics such as the meaning of family and desires/expectations about the child, pregnancy, and motherhood. A total of 48 infertile women over 35 years of ages using high-complexity assisted reproductive technologies in private and public institutions participated in this research. The data were treated by content analysis in which the following themes emerged: family social representations; social representations of motherhood; expectations with pregnancy and maternal models; and the imagined son. Participants represented the family in a positive way as a support system and the foundation and origin of love, embracing the family as a social bond. On the other hand, the family concepts based on inbreeding were also present, representing the family by perpetuation of the species and the importance of biological bonds. Motherhood was marked by significant idealization, being seen as a gratifying role and the fulfillment of femininity. The weight of the social demand to procreate was also felt as a duty to be fulfilled that, in the impossibility of carrying it out, generates feelings of inferiority, worthlessness, impotence, and inadequacy toward society, which reinforce the stigma of infertility. Results point to the necessary reflections on the role of women and our culture since Motherhood is still used as a measure of female success or failure. They also point to a reflection on the possibility of greater inclusion of psychological work in assisted reproduction given the emotional and social burden involved in this process.(AU)
Este estudio tuvo como objetivo analizar las concepciones de maternidad de mujeres infértiles, de diferentes niveles socioeconómicos, que se encuentran en tratamiento de reproducción asistida. Se trata de un estudio cualitativo, descriptivo, que utilizó como instrumento una entrevista semiestructurada e incluyó temas como el sentido de la familia, deseos/expectativas sobre el hijo y el embarazo y expectativas sobre la maternidad. Participaron en la investigación un total de 48 mujeres infértiles, mayores de 35 años, usuarias de tecnologías de reproducción asistida de alta complejidad en instituciones públicas y privadas. Los datos se sometieron a análisis de contenido del cual surgieron los temas: representaciones sociales familiares; representaciones sociales de la maternidad; expectativas con el embarazo y modelos maternos; hijo imaginado. Las participantes representaron a la familia de manera positiva, como sistema de apoyo, fundamento y origen del amor, configurándola como vínculo social. Por otro lado, también estuvieron presentes las concepciones familiares basadas en la consanguinidad, representando a la familia para la perpetuación de la especie y la importancia del vínculo biológico. La maternidad estuvo marcada por una importante idealización, vista como un rol gratificante y de realización de la feminidad. También se sintió el peso de la demanda social de procrear como un deber que cumplir y que, ante la imposibilidad de realizarlo, genera sentimientos de inferioridad, desvalorización, impotencia e inadecuación en la sociedad, lo que refuerza el estigma de la infertilidad. Por tanto, son necesarias reflexiones sobre el papel de la mujer en nuestra cultura, ya que la maternidad se sigue utilizando como medida del éxito o fracaso femenino. También se reflexiona sobre la posibilidad de una mayor inclusión del trabajo psicológico en la reproducción asistida dada la carga emocional y social que implica este proceso.(AU)
Assuntos
Humanos , Feminino , Gravidez , Reprodução , Família , Poder Familiar , Representação Social , Infertilidade Feminina , Ansiedade , Detecção da Ovulação , Indução da Ovulação , Óvulo , Transporte do Óvulo , Relações Pais-Filho , Equipe de Assistência ao Paciente , Pacientes , Manutenção da Gravidez , Gravidez Múltipla , Preconceito , Psicologia , Qualidade de Vida , Autoimagem , Sexo , Abstinência Sexual , Vergonha , Logro , Identificação Social , Transporte Espermático , Espermatozoides , Tabu , Tempo , Tabagismo , Sistema Urogenital , Útero , Características da População , Estratégias de Saúde Nacionais , Trabalho de Parto , Gravidez , Resultado da Gravidez , Preparações Farmacêuticas , Adoção , Divórcio , Casamento , Fertilização in vitro , Infecções Sexualmente Transmissíveis , Educação Infantil , Características da Família , Fatores de Risco , Doença Inflamatória Pélvica , Técnicas Reprodutivas , Idade Gestacional , Coito , Gravidez de Alto Risco , Doação de Oócitos , Consanguinidade , Anticoncepção , Sexualidade , Terapia de Casal , Afeto , Ameaça de Aborto , Infecção Pélvica , Hereditariedade , Padrões de Herança , Previsão da Ovulação , Depressão , Direitos Sexuais e Reprodutivos , Diagnóstico , Sonhos , Alcoolismo , Transferência Embrionária , Endometriose , Estado Conjugal , Mercado de Trabalho , Testes de Obstrução das Tubas Uterinas , Conflito Familiar , Relações Familiares , Fantasia , Medo , Doenças Urogenitais Femininas e Complicações na Gravidez , Masculinidade , Comportamento Sedentário , Consumo Excessivo de Bebidas Alcoólicas , Esperança , Normas Sociais , Desvalorização pelo Atraso , Inquéritos sobre o Uso de Métodos Contraceptivos , Trauma Psicológico , Concepção por Doadores , Estilo de Vida Saudável , Eficácia de Contraceptivos , Contracepção Reversível de Longo Prazo , Construção Social do Gênero , Expressão de Gênero , Necessidades Específicas do Gênero , Frustração , Constrangimento , Tristeza , Regulação Emocional , Angústia Psicológica , Empoderamento , Varicocele , Pertencimento , Apoio Familiar , Exaustão Emocional , Culpa , Felicidade , Imaginação , Infertilidade Masculina , Inseminação Artificial Homóloga , Laboratórios , Estilo de Vida , Solidão , Troca Materno-Fetal , Medicina , ObesidadeRESUMO
Objetivo: Avaliar a adequabilidade do tratamento de sífilis gestacional e fatores associados ao tratamento inadequado. Métodos: Estudo de coorte. Pacientes realizaram testes rápidos para sífilis e responderam ao questionário estruturado. A normalidade dos dados foi analisada com Kolmogorov-Smirnov. Para associação entre adequação do tratamento e fatores sociodemográficos e clínicos, foi executado o teste Exato de Fisher. Teste t de Student para amostras independentes foi executado para comparar o número de consultas pré-natal entre pacientes que apresentaram ou não adequação ao tratamento. Foi executada regressão logística para avaliar em que medida a adequação e a efetividade ao tratamento poderiam ser adequadamente previstas por número de consultas pré-natal. O nível de significância foi 5%. O projeto foi aprovado pelo Comitê de Ética em Pesquisa. Resultados: Participaram 560 pacientes. Trinta e três foram diagnosticadas com sífilis, e 29 foram adequadamente tratadas. Houve associação entre adequação do tratamento e consultas pré-natal. Os achados do teste t de Student corroboram os resultados encontrados no teste Exato de Fisher. O modelo de regressão demonstrou que mulheres que fazem pré-natal têm maior chance de tratamento adequado. Conclusão: O pré-natal aumenta a chance de tratamento adequado para sífilis na gestação
Objective: To assess the adequacy of treatment for gestational syphilis and factors associated with inadequate treatment. Methods: Cohort study. Patients underwent rapid tests for syphilis and answered the structured questionnaire. Data normality was analyzed using Kolmogorov-Smirnov. For the association between treatment adequacy and sociodemographic and clinical factors, Fisher's exact test was performed. Student's t test for independent samples was performed to compare the number of prenatal visits between patients who were or were not fit for treatment. Logistic regression was performed to assess the extent to which treatment adequacy and effectiveness could be adequately predicted by prenatal visit number. The significance level was 5%. The project was approved by the Ethics and Research Committee. Results: 560 patients participated. 33 were diagnosed with syphilis, 29 were adequately treated. There was an association between treatment adequacy and prenatal consultation. The student's t test findings corroborate those found in Fisher's Exact test. The regression model showed that women who undergo prenatal care have a greater chance of adequate treatment. Conclusion: Prenatal care increases the chance of adequate treatment for syphilis during pregnancy
Assuntos
Humanos , Feminino , Gravidez , Sífilis/diagnóstico , Sífilis/tratamento farmacológico , Obstetrícia , Sistema Único de Saúde , Gravidez , Serviços de Saúde Materno-Infantil , Fatores Sociodemográficos , Maternidades , Troca Materno-FetalRESUMO
Introdução: a síndrome antifosfolípide (SAF) é caracterizada por eventos trombóticos e perdas gestacionais de repetição sendo considerada a trombofilia adquirida mais comum. Objetivo: realizar uma revisão narrativa da passagem transplacentária de anticorpos em pacientes com SAF. Metodologia: revisão narrativa da literatura. Resultados: quando não está associada a alguma doença do tecido conectivo é dita primária e quando em associação com lúpus eritematosos sistêmico é dita secundária. A morbidade gestacional é frequente e torna-se de importância avaliar a passagem desses anticorpos transplacentariamente, desde que existem modelos animais da síndrome com transferência passiva desses anticorpos. A passagem transplacentária de anticorpos específicos já foi determinada em estudos, os quais demonstraram baixos níveis destes anticorpos no soro materno, porém uma eficiente passagem transplacentária para o neonato. Conclusão: existem poucos estudos sobre essa passagem materno-infantil em pacientes com SAF, que são aqui revisados.
Introduction: a antiphospholipid syndrome (APS) is characterized by thrombotic events and recurrent pregnancy losses and is considered the most common acquired thrombophilia. Objective: to carry out a narrative review of the transplacental passage and antibodies in patients with APS. Methodology: narrative literature review Results: when it is not associated with any connective tissue disease, it is said to be primary and when in association with systemic lupus erythematosus it is said to be secondary. Gestational morbidity is frequent and it is important to evaluate the passage of these antibodies transplacentally, since there are animal models of the syndrome with passive transfer of these antibodies. The transplacental passage of specific antibodies has already been determined in studies, which demonstrated low levels of these antibodies in the maternal serum, but an efficient transplacental passage for the newborn. Conclusion: there are few studies on this maternal-infant passage in patients with APS, which are reviewed here.
Assuntos
Humanos , Feminino , Gravidez , Recém-Nascido , Adulto , Complicações na Gravidez , Síndrome Antifosfolipídica , Anticorpos Antifosfolipídeos , Troca Materno-Fetal , Aleitamento MaternoRESUMO
Natural killer (NK) cells are the main immune cells at the maternal-fetal interface and accumulate in the uterine decidua in early pregnancy. Many studies have shown that NK cells at the maternal-fetal interface have unique phenotypes and play critical roles in various processes, including immune tolerance during pregnancy, decidualization, invasion of trophoblasts, remodeling of the uterine spiral artery, formation of the placenta and growth of embryo. However, specific functions of NK cells and their mechanism remain to be fully elucidated. This review summarizes the research progress of NK cells at the maternal-fetal interface and their roles in the pregnancy-related disorders in recent years. The aims of this review are to gain deep insight of the function of NK cells at the maternal-fetal interface and provide new ideas for intervention of pregnancy-related diseases.
Assuntos
Feminino , Humanos , Gravidez , Decídua , Células Matadoras Naturais , Troca Materno-Fetal , Placenta , Trofoblastos , ÚteroRESUMO
ABSTRACT Clinical and subclinical hypothyroidism are the most common hormonal dysfunctions during pregnancy. Insufficient maternal thyroid hormones (THs) in the early stages of pregnancy can lead to severe impairments in the development of the central nervous system because THs are critical to central nervous system development. In the fetus and after birth, THs participate in neurogenic processes, cell differentiation, neuronal activation, axonal growth, dendritic arborization, synaptogenesis and myelination. Although treatment is simple and effective, approximately 30% of pregnant women in Brazil with access to prenatal care have their first consultation after the first trimester of pregnancy, and any delay in diagnosis and resulting treatment delay may lead to cognitive impairment in children. This review summarizes the effects of clinical and subclinical hypothyroidism on fetal neurodevelopment, behavior and cognition in humans and rodents. Arch Endocrinol Metab. 2020;64(1):89-95
Assuntos
Humanos , Animais , Feminino , Gravidez , Ratos , Complicações na Gravidez/fisiopatologia , Encéfalo/embriologia , Disfunção Cognitiva/etiologia , Hipotireoidismo/complicações , Troca Materno-Fetal/fisiologia , Complicações na Gravidez/sangue , Trimestres da Gravidez , Efeitos Tardios da Exposição Pré-Natal , Encéfalo/fisiopatologia , Resultado da GravidezRESUMO
Actualmente, la transmisión transplacentaria es la vía más frecuente de infección por Trypanosoma cruzi. El diagnóstico y tratamiento temprano de hijos infectados evita el riesgo de desarrollar miocardiopatía y las niñas dejan de ser potenciales fuentes de transmisión congénita. En este estudio se evaluó el seguimiento de hijos de mujeres infectadas por T. cruzi en Centros de Salud de la provincia de Santa Fe. Se estudiaron 19 madres y sus 51 hijos. 45% (23/51) de los hijos no habían sido estudiados previamente, y de éstos 21/23 resultaron negativos mientras que dos niñas de 3 y 7 años estaban infectadas. Los 28 niños restantes ya habían sido estudiados en los Centros de Salud, siendo positivas dos gemelas de 22 meses y una niña de 9 años; los otros 25/28 hijos no estaban infectados. Un 47% (9/19) de las madres tenían como único antecedente la serología materna positiva, y de las 4 mujeres que transmitieron la infección, tres pertenecían a este grupo. La edad promedio de diagnóstico fue: 20±6 años en las madres y 7,4±6,7 años en los hijos. Se requieren estrategias sanitarias que favorezcan el estudio para la infección por T. cruzi en mujeres antes del embarazo y el seguimiento de todos los hijos para no perder la oportunidad de tratamiento
Transplacental transmission is currently the most frequent route of infection by Trypanosoma cruzi. Early diagnosis and treatment of infected children avoids the risk of developing cardiomyopathy, and girls are no longer potential sources of congenital transmission. This study evaluated the follow-up of children of women infected with T. cruzi in Primary Care Centres of the province of Santa Fe. Nineteen mothers and their 51 children were studied. Among the 51 children, 23 had no previous diagnosis (45%). Of these, 21 were negative while 2 girls, ages 3 and 7, were infected. The remaining 28 children already had a diagnosis at the Health Centres, with 2 twins of 22 months and a 9-year-old girl who were positive; the other 25 children were not infected. Among the 19 mothers, 9 (47%) had the positive maternal serology as the only antecedent. Of the 4 women who transmitted the infection, 3 belonged to this group. The average age of diagnosis was: 20 ± 6 years in mothers and 7.4 ± 6.7 years in children. Health strategies are required to promote the detection of infected women before pregnancy and the monitoring of all children so as not to miss the opportunity for treatment
Assuntos
Humanos , Masculino , Feminino , Gravidez , Lactente , Pré-Escolar , Criança , Adolescente , Adulto , Adulto Jovem , Atenção Primária à Saúde , Doença de Chagas/congênito , Tripanossomicidas/uso terapêutico , Seguimentos , Doença de Chagas/tratamento farmacológico , Doença de Chagas/sangue , Troca Materno-FetalAssuntos
Humanos , Feminino , Gravidez , Recém-Nascido , Fraturas Ósseas/etiologia , Fraturas Ósseas/diagnóstico por imagem , Hiperparatireoidismo Secundário/complicações , Hiperparatireoidismo Secundário/etiologia , Síndrome do Desconforto Respiratório do Recém-Nascido/etiologia , Diagnóstico Diferencial , Troca Materno-Fetal , Hipotonia MuscularAssuntos
Humanos , Feminino , Gravidez , Infecções por Arbovirus/complicações , Infecções por Arbovirus/prevenção & controle , Infecções por Arbovirus/epidemiologia , Complicações Infecciosas na Gravidez/epidemiologia , Troca Materno-Fetal , Brasil , Vírus Chikungunya , Mortalidade , Idade Gestacional , Gravidez de Alto Risco , Transmissão de Doença Infecciosa , Vírus da Dengue , Capacitação Profissional , Zika virus , América Latina , MicrocefaliaRESUMO
BACKGROUND@#The effects of prenatal exposure to toxic elements on birth outcomes and child development have been an area of concern. This study aimed to assess the profile of prenatal exposure to toxic elements, arsenic (As), bismuth (Bi), cadmium (Cd), mercury (total mercury (THg), methylmercury (MHg), inorganic mercury (IHg)), lead (Pb), antimony (Sb) and tin (Sn), and essential trace elements, copper (Cu), selenium (Se) and zinc (Zn), using the maternal blood, cord blood and placenta in the Tohoku Study of Child Development of Japan (N = 594-650).@*METHODS@#Inductively coupled plasma mass spectrometry was used to determine the concentrations of these elements (except mercury). Levels of THg and MeHg were measured using cold vapour atomic absorption spectrophotometry and a gas chromatograph-electron capture detector, respectively.@*RESULTS@#Median concentrations (25th-75th) of As, Cd, Pb, Sb, Sn and THg in the maternal blood were 4.06 (2.68-6.81), 1.18 (0.74-1.79), 10.8 (8.65-13.5), 0.2 (0.06-0.40) and 0.2 (0.1-0.38) ng mL and 5.42 (3.89-7.59) ng g, respectively. Median concentrations (25th-75th) of As, Cd, Pb, Sb, Sn and THg in the cord blood were 3.68 (2.58-5.25), 0.53 (0.10-1.25), 9.89 (8.02-12.5), 0.39 (0.06-0.92) and 0.2 (0.2-0.38) ng mL and 9.96 (7.05-13.8) ng g, respectively.@*CONCLUSIONS@#THg and Sb levels in the cord blood were twofold higher than those in the maternal blood. Cord blood to maternal blood ratios for As, Cd and Sb widely varied between individuals. To understand the effects of prenatal exposure, further research regarding the variations of placental transfer of elements is necessary.
Assuntos
Adulto , Feminino , Humanos , Gravidez , Sangue Fetal , Química , Japão , Exposição Materna , Troca Materno-Fetal , Metais , Sangue , Placenta , Química , Sangue , Oligoelementos , Sangue , Saúde da População UrbanaRESUMO
The present article looks at the association between the epidemiological history of women infected with Trypanosoma cruzi and the risk of vertical transmission. Eighty-three chronically infected mothers and their 237 children were studied, using a cohort design. All patients reside in Santa Fe city, Argentina. Twenty-five women transmitted the infection to 38 children. The potential risk factors evaluated in the mothers were exposure to vector transmission, blood transfusion history, maternal seropositivity, parasitemia and age at birth of the child. 72% (18/25) of the mothers who transmitted the infection to their children, had little or no contact with the vector, while only 28% (7/25) of the mothers presented a history of medium or high risk of vector infection. The differences were significant (p < 0.05). Forty-one percent of the women who presented maternal history as the probable route of infection, transmitted the parasite to more than one child (1.86 ± 0.33; CI95% = 1.03-2.68). In addition, the most frequent history, among the women who transmitted the disease to their children, was the absence of exposure to vector transmission and transfusion with unknown maternal serology. The route of infection was probably transplacental. These observations suggest that there are family genetic characteristics involved in vertical transmission. The parasite was found in 71% of the mothers who transmitted the infection to their children and were able to perform xenodiagnoses. After controlling for the other variables, the logistic regression analysis showed that xenodiagnosis (+) is a risk factor for congenital transmission; the relative risk was 12.2 (95% confidence interval: 2.9 - 50.1). No differences were found when analyzing the mother's age and transfusion history. The highest risk of congenital transmission was associated with detectable parasitemia and less maternal exposure to the vector.
Assuntos
Humanos , Feminino , Gravidez , Criança , Fatores de Risco , Doença de Chagas/transmissão , Trypanosoma cruzi , Transmissão Vertical de Doenças Infecciosas , Troca Materno-FetalRESUMO
ABSTRACT Purpose: To identify the fetal stem cell (FSC) response to maternal renal injury with emphasis on renal integrity improvement and Y chromosome detection in damaged maternal kidney. Materials and Methods: Eight non-green fluorescent protein (GFP) transgenic Sprague-Dawley rats were mated with GFP-positive transgenic male rats. Renal damage was induced on the right kidney at gestational day 11. The same procedure was performed in eight non-pregnant rats as control group. Three months after delivery, right ne- phrectomy was performed in order to evaluate the injured kidney. The fresh perfused kidneys were stained with anti-GFP antibody. Polymerase chain reaction (PCR) assay was also performed for the Y chromosome detection. Cell culture was performed to detect the GFP-positive cells. Technetium-99m-DMSA renal scan and single-photon emission computed tomography (SPECT) were performed after renal damage induction and 3 months later to evaluate the improvement of renal integrity. Results: The presence of FSCs was confirmed by immune histochemical staining as well as immunofluorescent imaging of the damaged part. Gradient PCR of female rat purified DNA demonstrated the presence of Y-chromosome in the damaged maternal kidney. Moreover, the culture of kidney cells showed GPF- positive cells by immuno- fluorescence microscopy. The acute renal scar was repaired and the integrity of dam- aged kidney reached to near normal levels in experimental group as shown in DMSA scan. However, no significant improvement was observed in control group. Conclusion: FSC seems to be the main mechanism in repairing of the maternal renal injury during pregnancy as indicated by Y chromosome and GFP-positive cells in the sub-cultured medium.
Assuntos
Animais , Masculino , Feminino , Gravidez , Cicatrização/fisiologia , Quimerismo , Células-Tronco Fetais/fisiologia , Nefropatias/fisiopatologia , Troca Materno-Fetal/fisiologia , Fatores de Tempo , Cromossomo Y , Imuno-Histoquímica , Tomografia Computadorizada de Emissão de Fóton Único , Células Cultivadas , Reação em Cadeia da Polimerase , Imunofluorescência , Ratos Sprague-Dawley , Compostos Radiofarmacêuticos , Ácido Dimercaptossuccínico Tecnécio Tc 99m , Modelos Animais de Doenças , Nefropatias/patologia , Nefropatias/diagnóstico por imagemRESUMO
O feto é um ser alogênico de sucesso. O feto é um aloenxerto natural bem tolerado pelo organismo materno. Vários fatores contribuem para a tolerância materna ao feto: 1. O útero é um local do corpo imunologicamente privilegiado, protegido por uma barreira tecidual não imunogênica; 2. A promoção de uma resposta imunossupressora local pela mãe: a. A molécula HLA-G do MHC de classe Ib, expressa nas células da placenta, impede que as células NK matem a placenta; b. A catabolização do aminoácido essencial triptofano pela placenta impede que as células T da mãe tenham acesso ao feto; c. A secreção das citocinas TGF-ß, IL-4 e IL-10, pelo epitélio uterino e trofoblasto, tende a suprimir as respostas das células T da mãe; d. A secreção das citocinas TGF-ß e IL-10, pelas células T reguladoras, também inibe as respostas de células T maternas.(AU)
The fetus is a successful allogeneic being. The fetus is a natural allograft well tolerated by the maternal organism. Several factors contribute to maternal fetal tolerance: 1. The uterus is an immunologically privileged body site, protected by a non-immunogenic tissue barrier. 2. Promoting a local immunosuppressive response by the mother: a. The MHC class Ib HLA-G molecule, expressed on placental cells, prevents NK cells from killing the placenta; b. The catabolization of the essential amino acid tryptophan by the placenta prevents the mother's T cells from accessing the fetus; c. Secretion of TGF-ß, IL-4 and IL-10 cytokines by the uterine and trophoblast epithelium tends to suppress the T-cell responses of the mother; d. Secretion of TGF-ß and IL-10 cytokines by regulatory T cells also inhibits maternal T cell responses.(AU)
Assuntos
Humanos , Feminino , Gravidez , Linfócitos T Reguladores , Feto/imunologia , Complexo Principal de Histocompatibilidade/imunologia , Troca Materno-Fetal/imunologia , Trofoblastos , Células Matadoras Naturais , Aloenxertos , Células AlógenasRESUMO
Se realizó un estudio analítico, observacional, de casos y controles, en niños de los círculos infantiles Pétalos de Rosa y La Espiguita, pertenecientes al área de salud del Policlínico Docente Armando García Aspurú de Santiago de Cuba, durante el período de febrero de 2015 a marzo de 2016, con vistas a determinar los factores maternos y neonatales asociados al retraso en la aparición de dientes temporales. La población quedó conformada por 150 niños de 2do a 4to años de vida, de los cuales se tomaron 2 controles (N=100) por cada caso (N=50). En la serie se obtuvo asociación estadísticamente significativa de las variables estado nutricional de la madre, ganancia de peso de la madre, enfermedades maternas, lactancia materna y peso del niño al nacer, con la alteración del brote dentario temporal en los niños. Se recomendó realizar intervenciones educativas en los círculos infantiles y las comunidades para apoyar el trabajo del médico de la familia
An analytic, observational, of cases and controls study, in children from Pétalos de Rosa and La Espiguita day care centers, belonging to the health area of Armando García Aspurú Teaching Polyclinic was carried out in Santiago de Cuba, during February, 2015 to March, 2016, aimed at determining the maternal and neonatal factors associated with the delay in the emergence of the temporary teeth. The population was conformed by 150 children from 2nd to 4th years of life, from whom 2 controls were taken (N=100) for each case (N=50). In the series a statistically significant association of the variables mother's nutritional state, mother's weight gain, maternal diseases, breast feeding and child birth weight was obtained, with the disorder of the temporary teething eruption in the children. It was suggested to carry out educational interventions in the day care centers and communities to support the family doctor's work
Assuntos
Humanos , Masculino , Feminino , Lactente , Pré-Escolar , Dente Decíduo/fisiopatologia , Erupção Dentária/fisiologia , Fatores de Risco , Relações Materno-Fetais/fisiologia , Troca Materno-Fetal/fisiologia , Dente Decíduo/anormalidades , Troca Materno-Fetal/genéticaRESUMO
Objective: To investigate the effects of docosahexenoic acid (DHA) supplementation on infant's growth and BMI during pregnancy. Methods: A total of 1 516 healthy pregnant women delivered their babies in two maternal and child health care hospitals in Beijing and were chosen as the subjects in this cohort study from May to October 2015. Self-developed questionnaires were used to gather general information of the subjects, including age, height, weight, weight gain during pregnancy, delivery mode, DHA supplementation etc., before giving birth. Information on body length, weight, head circumference and BMI at birth and 6 months postnatal, of the infants were recorded. Breast milk was collected to test the fatty acid profiles by using the gas chromatography (GC) method at one to three months postnatally. Results: The overall rate of DHA supplementation was 47.76% among the pregnant women, in which introduction of DHA from the early and second stage of the pregnancy accounted for 49.31% and 39.64% respectively. When DHA supplementation began from the early pregnant stage, the DHA concentration showed an increase in the milk (P<0.05), whereas the supplementation began from the second and third stages did not affect the milk DHA concentration (P>0.05). Higher height and lower BMI were seen in the infants at birth and 6 months in the supplementation group when comparing to the non-supplementary group (P<0.05), with the greatest effects noticed in the earliest supplementation group. Specifically, the head circumference appeared larger from the early pregnant stage in the DHA supplementary group, than that in the non-supplement group (P=0.001). The increment of head circumference was larger than that in the other groups when the infants were 6-month old (P<0.01). Results from the partial regression analysis showed that during pregnancy, there were positive correlations between DHA supplementation and height (r=0.324, r=0.216), head circumference (r=0.221, r=0.302) as well as the increment of head circumference (r=0.276) at birth and 6 months (P<0.05). Whereas, a negative correlation was shown between DHA and the infants' BMI (r=-0.310, r=-0.371) (P<0.05) when supplementation was given during maternal pregnancy. Conclusions: When DHA supplementation program was carried out during maternal pregnancy, it could increase the height and head circumference and inhibit the rapid increase of BMI in the infants BMI. Our findings seemed helpful in promoting brain development and preventing the childhood obesity.
Assuntos
Feminino , Humanos , Lactente , Gravidez , Estatura , Índice de Massa Corporal , Peso Corporal , Desenvolvimento Infantil/efeitos dos fármacos , Estudos de Coortes , Suplementos Nutricionais , Ácidos Docosa-Hexaenoicos/farmacologia , Recém-Nascido/fisiologia , Troca Materno-Fetal , Parto , Resultado da Gravidez , Cuidado Pré-Natal , Aumento de PesoRESUMO
Placentas from pregnant cows with different gestation periods were used. Placental fragments of all groups were processed and evaluated by transmission electron microscopy. After fragment analysis, bovine placenta was observed to be epitheliochorial type in early pregnancy, becoming progressively sinepiteliocorial at the beginning of the second trimester. There are no ultrastructural evidences of inflammation in the region of caruncles throughout gestation, despite the invasion of caruncle proper lamina by trophoblast cells. However, throughout pregnancy and especially at the end, there were evident signs of cell degeneration in both trophoblast and the uterine epithelium. The active trophoblast cells intensely phagocytize cellular debris. There are complex interdigitations between the surface of the trophoblast and the uterine epithelium, which is related to the increase of the exchange surface between mother and fetus. At the end of pregnancy, interdigitations disappear, favoring the detachment and expulsion of the placenta after birth.(AU)
Foram utilizadas placentas de vacas abatidas em frigorífico com diversos tempos gestacionais. Fragmentos de placentomo de todos os grupos foram processados e avaliados em microscopia eletrônica de transmissão. Após análise dos fragmentos, observou-se que a placenta bovina é do tipo epiteliocorial no início da gestação, tornando-se sinepiteliocorial progressivamente a partir do início do segundo mês de gestação. Não existem evidências ultraestruturais de inflamação na região das carúnculas durante toda a gestação, apesar da invasão da lâmina própria caruncular por células trofoblásticas. No entanto, durante toda a gestação e em especial ao seu final, foram observados sinais evidentes de degeneração celular, tanto do trofoblasto como do epitélio uterino. As células trofoblásticas ativas fagocitam intensamente os debris celulares originados dessas degenerações. Existem complexas interdigitações entre a superfície do trofoblasto e do epitélio uterino, o que estaria relacionado com o aumento da superfície de troca entre mãe e feto. Ao final da gestação, praticamente desaparecem essas interdigitações, favorecendo o descolamento e a expulsão da placenta após o parto.(AU)
Assuntos
Animais , Feminino , Gravidez , Bovinos , Troca Materno-Fetal/fisiologia , Placenta/fisiologia , Placenta/ultraestrutura , Microscopia Eletrônica de Transmissão/veterináriaRESUMO
The aim of this study was to examine the intra-uterine exposure to Sarcocystis spp. antigens, determining the number of foals with detectable concentrations of antibodies against these agents in the serum, before colostrum ingestion and collect data about exposure of horses to the parasite. Serum samples were collected from 195 thoroughbred mares and their newborns in two farms from southern Brazil. Parasite specific antibody responses to Sarcocystis antigens were detected using the indirect immunofluorescent antibody test (IFAT) and immunoblot analysis. In 84.1% (159/189) of the pregnant mares and in 7.4% (14/189) of foals we detected antibodies anti-Sarcocystis spp. by IFAT. All samples seropositive from foals were also positive in their respective mares. Serum samples of seropositive foals by IFAT, showed no reactivity on the immunoblot, having as antigens S. neurona merozoites. In conclusion, the intra-uterine exposure to Sarcocystis spp. antigens in horses was demonstrated, with occurrence not only in mares, but also in their foals, before colostrum ingestion these occurrences were reduced.
O objetivo deste estudo foi avaliar a exposição intrauterina ao Sarcocystis spp., para determinar o número de potros que possuem concentrações detectáveis de anticorpos contra esses agentes no soro, antes da ingestão do colostro, por meio da coleta de dados sobre a exposição a esses protozoários nos equinos. Amostras de soro foram coletadas de 195 éguas puro-sangue e seus respectivos potros recém-nascidos, em duas fazendas localizadas na região Sul do Brasil. Os testes utilizados na detecção de anticorpos específicos para o Sarcocystis foram a reação de imunofluorescência indireta (RIFI) e análise por meio de immunoblot. Pela RIFI, em 84,1% (159/189) das éguas e em 7,4% (14/189) dos potros foram detectados anticorpos anti-Sarcocystis spp. Todas as amostras soropositivas dos potros também foram positivas para suas respectivas mães. As amostras de soro dos potros soropositivos na RIFI, não apresentaram reatividade no immunoblot, tendo como antígenos merozoítos de S. neurona. Em conclusão, foi demonstrada a exposição intrauterina de Sarcocystis spp. em equinos, com ocorrência em éguas, porém, em seus respectivos potros, antes da ingestão de colostro a ocorrência foi reduzida.
Assuntos
Animais , Anticorpos Antiprotozoários/análise , Cavalos/parasitologia , Diagnóstico Pré-Natal/veterinária , Sarcocystis/patogenicidade , Encefalomielite/veterinária , Immunoblotting , Immunoblotting/veterinária , Troca Materno-Fetal , Estudos SoroepidemiológicosRESUMO
ABSTRACT Objective To evaluate, in rat offspring, bone changes induced by excess maternal thyroxin during pregnancy and lactation, and to assess the reversibility of these changes after weaning. Material and methods Twenty Wistar rats were distributed in two groups, hyperthyroid and control, that were treated daily with L-thyroxin (50 mcg/animal) and placebo, respectively. The treatment was initiated seven days before mating and continued throughout pregnancy and lactation. From every female of each of the two groups, two offspring were euthanized after birth, two at 21 days of age (weaning), and two at 42 days of age (21 days after weaning). In newborns, the length of pelvic and thoracic limbs were measured, and in the other animals, the length and width of the femur and humerus were measured. Bones were dissected, decalcified, embedded in paraffin, and analyzed histomorphometrically. Results Excess maternal thyroxin significantly reduced the length of the pelvic limb in neonates. In 21-day-old individuals, excess maternal thyroxine reduced the length and the width of the femur and the humerus. It also increased thickness of the epiphyseal plate and the percentage of trabecular bone tissue. In 42-day-old individuals, there were no significant differences between groups in relation to the parameters evaluated in the previous periods. Conclusion Excess maternal thyroxine reduced growth in suckling rats both at birth and at weaning, and it also increased the percentage of trabecular bone tissue in 21-day-old animals. These changes, however, were reversible at 42 days, i.e., 21 days after weaning. Arch Endocrinol Metab. 2016;60(2):130-7.
Assuntos
Animais , Masculino , Feminino , Gravidez , Tiroxina/farmacologia , Osso e Ossos/efeitos dos fármacos , Osso e Ossos/patologia , Troca Materno-Fetal , Tiroxina/metabolismo , Fatores de Tempo , Desmame , Osso e Ossos/metabolismo , Lactação/efeitos dos fármacos , Fatores Etários , Ratos Wistar , Animais Recém-Nascidos/crescimento & desenvolvimentoRESUMO
Caffeine consumption during pregnancy has been shown in the scientific literature to be associated with teratogenicity such as low birth weight, fetal malformations, and miscarriage. However, the morphological alterations of the offspring of dams exposed during pregnancy have not been consistently described, and the mechanisms why they occur remain elusive. Thus, we aimed to characterize the offspring malformations induced by moderate and high doses of caffeine during pregnancy. Dams were divided into three groups: control, moderate (0.3 g/L), and high dose (1.0 g/L) of caffeine, which was provided in the drinking water beginning on gestational day 1 and continuing throughout the entire gestation. At moderate doses, only one of the dams had stillborn pups, although no macroscopic malformations were observed. High doses of caffeine induced significantly more malformations (P<0.001) and early death (before P4). The malformations observed were related to fetal development and cardiovascular alterations, namely bruises, macrocephaly with short limbs, abnormal development (or absence) of head structures and limbs, labial malformations, hydrops fetalis, and poor placental formation. We discussed the proposed mechanisms by which caffeine might induce these phenotypes, which may involve down-regulation of adenosine A1 receptors, and increased mothers' catecholamines. Our findings further confirm the evidence of the teratogenic effects of high doses of caffeine administered during pregnancy. These findings support the recommendation to avoid caffeine exposure during pregnancy (AU)
Assuntos
Animais , Feminino , Gravidez , Ratos , Cafeína/toxicidade , Anormalidades Congênitas , Cardiopatias Congênitas/induzido quimicamente , Gravidez , Cafeína/administração & dosagem , Regulação para Baixo/efeitos dos fármacos , Troca Materno-Fetal/efeitos dos fármacos , Receptor A1 de AdenosinaRESUMO
Since its discovery in 1947 in Uganda and control and eradication efforts have aimed at its vectors [Aedes mosquitoes] in Latin America in the 1950s, an absolute neglect of Zika programs and interventions has been documented in Aedes endemic and epidemic-prone countries. The current unprecedented Zika viral epidemics and rapid spread in the Western hemisphere pose a substantial global threat, with associated anxiety and consequences. The lack of safe and effective drugs and vaccines against Zika or dengue epidemics further buttresses the realization from the West Africa Ebola outbreak that most emerging disease-prone countries are still poorly prepared for an emergency response. This paper examines knowledge gaps in both emerging and neglected arthropod-borne flavivirus infectious diseases associated with poverty and their implications for fostering local, national and regional emerging disease preparedness, effective and robust surveillance-response systems, sustained control and eventual elimination. Strengthening the regional and Global Health Flavivirus Surveillance-Response Network [GHFV-SRN] with other models of socio-economic, climatic, environmental and ecological mitigation and adaptation strategies will be necessary to improve evidence-based national and global maternal-child health agenda and action plans