Changes in Microbiota Profile in the Proximal Remnant Intestine in Infants Undergoing Surgery Requiring Enterostomy.

Early-life gut dysbiosis has been associated with an increased risk of inflammatory, metabolic, and immune diseases later in life. Data on gut microbiota changes in infants undergoing intestinal surgery requiring enterostomy are scarce. This prospective cohort study examined the enterostomy effluent of 29 infants who underwent intestinal surgery due to congenital malformations of the gastrointestinal tract, necrotizing enterocolitis, or spontaneous intestinal perforation. Initial effluent samples were collected immediately after surgery and final effluent samples were collected three weeks later. Gut microbiota composition was analysed using real-time PCR and 16S rRNA gene sequencing. Three weeks after surgery, an increase in total bacteria number (+21%, p = 0.026), a decrease in Staphylococcus (-21%, p = 0.002) and Candida spp. (-16%, p = 0.045), and an increase in Lactobacillus (+3%, p = 0.045) and in less abundant genera belonging to the Enterobacteriales family were found. An increase in alpha diversity (Shannon's and Simpson's indexes) and significant alterations in beta diversity were observed. A correlation of necrotizing enterocolitis with higher Staphylococcus abundance and higher alpha diversity was also observed. H2-blockers and/or proton pump inhibitor therapy were positively correlated with a higher total bacteria number. In conclusion, these results suggest that positive changes occur in the gut microbiota profile of infants three weeks after intestinal surgery.

Colonisation of the proximal intestinal remnant in newborn infants with enterostomy: a longitudinal study protocol.

INTRODUCTION: The gut microbiota plays a main role in the maintenance of host's health. Exposure to different conditions in early life contributes to distinct 'pioneer' bacterial communities in the intestine, which shape the newborn infant development. Newborn infants with congenital malformations of the gastrointestinal tract (CMGIT), necrotising enterocolitis (NEC) and spontaneous intestinal perforation (SIP) commonly require abdominal surgery and enterostomy. The knowledge about the colonisation of these newborns' intestine by microorganisms is scarce. This protocol is designed to explore the microbial colonisation over time of the proximal intestinal remnant in newborn infants who underwent surgery for CMGIT, NEC or SIP and require enterostomy. METHODS AND ANALYSIS: The literature about microbiota colonisation in newborn infants with enterostomy was reviewed and an observational, longitudinal, prospective study was designed. The infants will be recruited at the Neonatal Intensive Care Unit of the Hospital Dona Estefânia, Centro Hospitalar Universitário de Lisboa Central. Samples of the enterostomy effluent will be collected every 3 days, through 21 days after the first collection. The microorganisms colonising the proximal intestinal remnant will be identified using the 16S rRNA sequence analysis and a subset of microorganisms will be quantified using real-time PCR. This protocol may serve as basis for future observational and interventional studies on the modulation of the intestinal microbiota (eg, probiotics) on short and long-term outcomes in this population. ETHICS AND DISSEMINATION: This study protocol was approved by the Ethics Committee of Centro Hospitalar Universitário de Lisboa Central (441/2017) and by the Ethics Committee of NOVA Medical School, Universidade Nova de Lisboa (n°50/2018/CEFCM). The results will be spread through peer-reviewed publications and presentations at international scientific meetings. TRIAL REGISTRATION NUMBER: NCT03340259.

Recurrent maternal CMV infection associated with symptomatic congenital infection: results from a questionnaire study in Portugal.

OBJECTIVE: Human cytomegalovirus (CMV) is the most widespread agent of congenital infection in humans and is still a challenging issue. Despite lower rates of vertical transmission being associated with recurrent infection when compared with primary infection, the first still represents the majority of congenital infections worldwide. Based on data from active reporting, we explored the influence of maternal primary/non-primary infection both on the presentation and outcome of congenital CMV infection in early childhood. DESIGN: Infants with positive viruria during the first 3 weeks of life were reported through the Portuguese Paediatric Surveillance Unit. PATIENTS: Infants born between 2006 and 2011 with confirmed congenital CMV infection. METHODS: Maternal infection was considered primary if CMV IgG seroconversion occurred during pregnancy or low avidity IgG was documented; it was considered non-primary if positive IgG was documented before pregnancy or high avidity CMV IgG was present early in pregnancy. Follow-up questionnaires were sent up to 6 years of age. RESULTS: Forty confirmed cases of congenital CMV infection were reported (6.6:105 live births, 95% CI 4.81 to 8.92); 22 out of 40 were asymptomatic. The odds for non-primary maternal infection if the offspring was symptomatic at birth were 6.2 (95% CI 1.2 to 32.27). CONCLUSION: The reported number of confirmed cases of congenital CMV infection was much lower than expected. Under-reporting and missed diagnosis were considered possible reasons. Non-primary maternal infections were associated with symptomatic congenital CMV infection in the offspring. Maternal recurrent infections can have a significant impact on the total number of symptomatic infections in Portugal.

Invasive fungal infection in neonatal intensive care units: a multicenter survey.

This study assesses the epidemiology of invasive fungal infection (IFI) in Portuguese Neonatal Intensive Care Units (NICUs) and compares the effectiveness and safety of antifungal therapies. A survey concerning the period 2005-2010 was carried out in NICUs of Greater Lisbon. Among 10 473 admitted neonates, 44 cases were identified, 29 among extreme low birth weight neonates (65.9%). Cumulative incidence rate was 0.42% (95%CI 0.309-0.559). A central vascular catheter was present before IFI in all cases. Candida albicans and Candida parapsilosis were the most frequent isolates. The initial antifungic was fluconazole in 22 cases and liposomal amphotericin B (L-AmB) in 18. Therapy was switched in 10 patients on fluconazole and 3 on L-AmB. Case fatality rate was 11.4% (95%CI 4.39-23.91). No serious adverse drugs reactions (SADRs) or clinical side effects were observed. The knowledge of the local epidemiology helps to identify adequate prophylactic and treatment strategies.

[TORCH serology and group B Streptococcus screening analysis in the population of a maternity]. / Análise das serologias para infeções do grupo TORCH e do rastreio para Streptococcus do grupo B na população de grávidas de uma maternidade.

INTRODUCTION: Systematic screening for TORCH infections and group B Streptococcus (GBS) during pregnancy has been an important factor in the improvement of perinatal care. AIM: To evaluate TORCH serology and GBS carriers state in the population of a maternity, to assess variability with age and nationality and to search for congenital infections. MATERIAL AND METHODS: Non-probabilistic prevalence study. RESULTS: 9508 TORCH and 2639 GBS results were registered. Immunity rate for rubella was 93.3%, higher for Portuguese women; for toxoplasmosis it was 25.7%, higher among the oldest and foreign women; IgG for CMV was positive in 62.4%, no influence of age was found. VDRL was reactive in 0.5%; HBsAg was found to be positive in 2.3%, higher in foreign women. Antibodies for hepatitis C virus and HIV were found respectively in 1.4% and 0.7%. No congenital infections were diagnosed. GBS carrier state was found in 13.9%. DISCUSSION: A high rate of positive IgG was found for rubella reflecting vaccines policy. For toxoplasmosis the low rate of positives means that a high number of pregnant women have to repeat serology during pregnancy with inherent costs. Like in the general population, a high rate of CMV positive mothers was found. For some infections we found that foreign women had different conditions. CONCLUSION: Knowledge on TORCH and GBS state helps to better draw guidelines concerning screening policies during pregnancy.

Objectivo: Avaliar o resultado de serologias para infeções do grupo TORCH e do rastreio para Streptococcus do grupo B (SGB) numa amostra de grávidas de uma maternidade, estudar a influência da idade e da nacionalidade, e identificar casos de infecção congénita.Material e Métodos: Estudo não probabilístico de prevalência de imunidade e infecção durante a gravidez.Resultados: Registámos 9508 serologias TORCH e 2639 resultados de rastreio para SGB. A taxa de imunidade para rubéola foi 93,3%, significativamente mais elevada em portuguesas; 25,7% das mulheres tinham IgG positiva para Toxoplasma goondii; a taxa foi mais elevada nas mulheres mais velhas e entre estrangeiras; encontrámos IgG positiva para vírus citomegálico humano (CMV) em 62,4%; não houve variação com a idade. O VDRL foi reactivo em 0,5%; 2,3% das mães tinham AgHBs positivo, mais frequente nas estrangeiras; 1,4% tinha anticorpos para o vírus da hepatite C e 0,7% tinha VIH positivo. Não houve casos declarados de infeção congénita; 13,9% das mulheres eram portadoras de SGB.Discussão: A elevada taxa de imunidade para a rubéola é resultado da política nacional de vacinação. A baixa taxa de imunidade para a toxoplasmose torna mais dispendioso o acompanhamento das grávidas. A elevada prevalência do CMV está de acordo com o encontrado na comunidade. Para algumas infeções foram encontradas diferenças de acordo com a nacionalidade.Conclusão: O conhecimento da imunidade e infecção na população é um instrumento importante para o planeamento dos rastreios durante a gravidez.

Multiple haemangiomas, diaphragmatic eventration and Beckwith-Wiedemann syndrome: an unusual association.

A 6-month-old girl with Beckwith-Wiedemann syndrome, multiple haemangiomas (axillary, laryngeal, pulmonary and hepatic) and diaphragmatic eventration was reported. All tumours responded to treatment with propranolol. The surgical correction of diaphragmatic eventration was crucial to a better outcome.

Perinatal care in Portugal: effects of 15 years of a regionalized system.

AIM: To share information on the organization of perinatal care in Portugal. METHODS: Data were derived from the Programme of the National Committee for Mother and Child Health 1989, National Institute for Statistics, and Eurostat. RESULTS: In 1989, perinatal care in Portugal was reformed: the closure was proposed of maternity units with less than 1500 deliveries per year; hospitals were classified as level I (no deliveries), II (low-risk deliveries, intermediate care units) or III (high-risk deliveries, intensive care units), and functional coordinating units responsible for liaison between local health centres and hospitals were established. A nationwide system of neonatal transport began in 1987, and in 1990 postgraduate courses on neonatology were initiated. With this reform, in-hospital deliveries increased from 74% before the reform to 99% after. Maternal death rate decreased from 9.2/100,000 deliveries in 1989 to 5.3 in 2003 and, in the same period, the perinatal mortality rate decreased from 16.4 to 6.6/1000 (live births + stillborn with > or = 22 wk gestational age), the neonatal mortality rate decreased from 8.1 to 2.7/1000 live births, and the infant mortality rate from 12.2/1000 live births to 4/1000. CONCLUSION: Regionalization of perinatal care and neonatal transport are key factors for a successful perinatal health system.