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1.
BMC Pregnancy Childbirth ; 15: 180, 2015 Aug 19.
Artigo em Inglês | MEDLINE | ID: mdl-26285816

RESUMO

BACKGROUND: The United Kingdom (UK) caesarean section (CS) rate is largely determined by reluctance to augment trial of labour and vaginal birth. Choice between repeat CS and attempting vaginal birth after CS (VBAC) in the next pregnancy is challenging, with neither offering clear safety advantages. Women may access online information during the decision-making process. Such information is known to vary in its support for either mode of birth when assessed quantitatively. Therefore, we sought to explore qualitatively, the content and presentation of web-based health care information on birth after caesarean section (CS) in order to identify the dominant messages being conveyed. METHODS: The search engine Google™ was used to conduct an internet search using terms relating to birth after CS. The ten most frequently returned websites meeting relevant purposive sampling criteria were analysed. Sampling criteria were based upon funding source, authorship and intended audience. Images and written textual content together with presence of links to additional media or external web content were analysed using descriptive and thematic analyses respectively. RESULTS: Ten websites were analysed: five funded by Government bodies or professional membership; one via charitable donations, and four funded commercially. All sites compared the advantages and disadvantages of both repeat CS and VBAC. Commercially funded websites favoured a question and answer format alongside images, 'pop-ups', social media forum links and hyperlinks to third-party sites. The relationship between the parent sites and those being linked to may not be readily apparent to users, risking perception of endorsement of either VBAC or repeat CS whether intended or otherwise. Websites affiliated with Government or health services presented referenced clinical information in a factual manner with podcasts of real life experiences. Many imply greater support for VBAC than repeat CS although this was predominantly conveyed through subtle use of words rather than overt messages, with the exception of the latter being apparent in one site. CONCLUSIONS: Websites providing information on birth after CS appear to vary in nature of content according to their funding source. The most user-friendly, balanced and informative websites appear to be those funded by government agencies.


Assuntos
Recesariana , Informação de Saúde ao Consumidor , Internet , Nascimento Vaginal Após Cesárea , Tomada de Decisões , Feminino , Humanos , Gravidez , Pesquisa Qualitativa , Reino Unido
2.
Hum Reprod ; 29(7): 1452-8, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24812310

RESUMO

STUDY QUESTION: Is DNA methylation in buccal cell DNA from children born following IVF (in vitro fertilization) and ICSI (intra-cytoplasmic sperm injection) different from that of spontaneously conceived children? SUMMARY ANSWER: DNA methylation in the imprinted gene, small nuclear ribonucleoprotein polypeptide N (SNRPN), was higher in children conceived by ICSI and in those born to women with the longest duration of infertility regardless of the method of conception. WHAT IS KNOWN ALREADY: Fertility treatment is associated with a small but significant increase in the risk of a range of adverse obstetric outcomes, birth defects and longer term sequelae, but the biological basis for this is unknown. A growing evidence base suggests that epigenetics may play a role in subfertility and the link between fertility and health. STUDY DESIGN, SIZE, DURATION: In this retrospective cohort study of children born between 2002 and 2008, we measured DNA methylation in paternally expressed gene 3 (PEG3), insulin-like growth factor II (IGF2), SNRPN, long interspersed nuclear element 1 (LINE1) and the insulin gene (INS) in buccal cell DNA from children born following IVF (n = 49) and ICSI (n = 20) and compared them with a matched spontaneous conception group (n = 86). PARTICIPANTS/MATERIALS, SETTING, METHODS: Participants were identified from the Aberdeen Maternity and Neonatal Databank and IVF and ICSI pregnancies were matched to spontaneous conception pregnancies on year of birth and maternal age at delivery. Only singleton pregnancies following fresh embryo transfer were included. DNA methylation was determined by pyrosequencing. Regression with adjustment for covariates was used to determine the effect of infertility on offspring DNA methylation. MAIN RESULTS AND THE ROLE OF CHANCE: SNRPN methylation in the offspring was linked to fertility treatment in the parents. This effect was specific to children conceived using ICSI and was apparent in the comparison of ICSI versus spontaneous conception (1.03%; 95% CI 0.10, 1.97; P = 0.031), ICSI versus standard IVF (1.13%; 95% CI 0.04, 2.23; P = 0.043) and ICSI versus standard IVF and spontaneous conception (1.05; 95% CI 0.15, 1.94; P = 0.023). In all comparisons, the use of ICSI was associated with a higher level of SNRPN methylation in the offspring. A higher level of SNRPN methylation in the offspring was also associated with a longer duration of infertility in the parents. This was observed in all cases of infertility (0.18% per year of infertility; 95% CI 0.02, 0.33; P = 0.026) and after excluding ICSI cases (0.21% per year of infertility; 95% CI 0.04, 0.37; P = 0.017). There was a significant increase in the level of LINE1 methylation with age between birth and 7 years (0.77% per year; 95% CI 0.49, 1.05; P < 0.001). Methylation in the INS gene decreased significantly over the same period (-0.46% per year; 95% CI -0.89, -0.03; P = 0.035). There was no evidence from this cross-sectional data that methylation within the imprinted genes changed over the first 7 years of life. LIMITATIONS, REASONS FOR CAUTION: The ICSI sample size was limited but the groups were carefully selected and well matched and the SNRPN findings were consistent across different outcomes. WIDER IMPLICATIONS OF THE FINDINGS: The results of this study provide support for a role for epigenetics, and imprinting in particular, in fertility. The specific changes point to possible long-term consequences of fertility treatment for the health and fertility of future generations. STUDY FUNDING/COMPETING INTEREST(S): The authors report no conflict of interest in relation to this work. Funding was provided by the University of Aberdeen and the Scottish Government. TRIAL REGISTRATION NUMBER: Not applicable.


Assuntos
Epigênese Genética , Fertilização in vitro/métodos , Técnicas de Reprodução Assistida , Injeções de Esperma Intracitoplásmicas/métodos , Criança , Pré-Escolar , Estudos Transversais , DNA/metabolismo , Metilação de DNA , Feminino , Fertilização , Humanos , Lactente , Infertilidade/terapia , Insulina/genética , Fator de Crescimento Insulin-Like II/genética , Fatores de Transcrição Kruppel-Like/genética , Elementos Nucleotídeos Longos e Dispersos/genética , Masculino , Gravidez , Resultado da Gravidez , Estudos Retrospectivos , Proteínas Centrais de snRNP/genética
3.
BMC Pregnancy Childbirth ; 14: 361, 2014 Oct 11.
Artigo em Inglês | MEDLINE | ID: mdl-25306551

RESUMO

BACKGROUND: Repeat caesarean sections make a substantial contribution to the overall caesarean section rate. It is important to understand what influences women to choose this option when the alternative of attempting vaginal birth after caesarean section is available. As many such women use the internet while seeking information on their options, the aim of this study was to assess content of websites on birth after previous caesarean and identify website characteristics which predict content. METHODS: An internet survey of the forty eight most frequently encountered websites retrieved from a search using various terms relating to birth after caesarean section via a popular search engine was performed. Websites were assessed for their content supportive of either vaginal birth after caesarean (VBAC) or elective repeat caesarean section (ERCS), using the RCOG patient information document, 'Birth after previous caesarean; Information for You' as a 'gold standard'. A simple scoring method which categorised information into either supportive of VBAC (14 facts available) or ERCS (10 facts available) was employed and mean scores compared. Poisson regression analysis was used to assess the extent to which the score was predicted by website funding source, country of origin, author status and intended audience. RESULTS: A mean of 42.4% (SD 23.8) of facts supportive of VBAC and 44.8% (SD 25.0) of facts supportive of ERCS were featured across the 48 websites, with corresponding scores in the five most frequently encountered websites being 40.0% (SD 13.9) and 66.0% (SD 20.7). Extent of featured information supportive of ERCS was related to country of origin with the UK having higher scores on average than the US. CONCLUSIONS: Women searching for internet information on birth after previous caesarean are exposed to incomplete information. Origin of website has a significant effect on website content.


Assuntos
Recesariana/estatística & dados numéricos , Internet/estatística & dados numéricos , Folhetos , Educação de Pacientes como Assunto/métodos , Preferência do Paciente/estatística & dados numéricos , Nascimento Vaginal Após Cesárea/estatística & dados numéricos , Adulto , Cesárea/métodos , Estudos Transversais , Feminino , Humanos , Parto , Gravidez , Reino Unido
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