RESUMO
Preeclampsia (PE) and Intrauterine Growth Restriction (IUGR) are major contributors to perinatal morbidity and mortality. These pregnancy disorders are associated with placental dysfunction and share similar pathophysiological features. The aim of this study was to compare the placental gene expression profiles including mRNA and lncRNAs from pregnant women from four study groups: PE, IUGR, PE-IUGR, and normal pregnancy (NP). Gene expression microarray analysis was performed on placental tissue obtained at delivery and results were validated using RTq-PCR. Differential gene expression analysis revealed that the largest transcript variation was observed in the IUGR samples compared to NP (n = 461; 314 mRNAs: 252 up-regulated and 62 down-regulated; 133 lncRNAs: 36 up-regulated and 98 down-regulated). We also detected a group of differentially expressed transcripts shared between the PE and IUGR samples compared to NP (n = 39), including 9 lncRNAs with a high correlation degree (p < 0.05). Functional enrichment of these shared transcripts showed that cytokine signaling pathways, protein modification, and regulation of JAK-STAT cascade are over-represented in both placental ischemic diseases. These findings contribute to the molecular characterization of placental ischemia showing common epigenetic regulation implicated in the pathophysiology of PE and IUGR.
Assuntos
Retardo do Crescimento Fetal/genética , Placenta/metabolismo , Pré-Eclâmpsia/genética , RNA Longo não Codificante/genética , RNA Mensageiro/genética , Transcriptoma , Adulto , Peso ao Nascer , Feminino , Retardo do Crescimento Fetal/metabolismo , Humanos , Recém-Nascido , Masculino , Pré-Eclâmpsia/metabolismo , Gravidez , RNA Longo não Codificante/metabolismo , RNA Mensageiro/metabolismoRESUMO
OBJECTIVE: We aimed to obtain evidence about the safety, acceptability, and feasibility of a direct-to-patient telemedicine medical abortion service in Mexico's private health sector. STUDY DESIGN: A prospective observational one-group study to evaluate a telemedicine abortion service, referred to as TeleAborto, was conducted at three private clinics and one nonclinician community-based provider. Information about the study was provided by phone, websites, and social media. Abortion seekers were screened for eligibility and underwent any pre-abortion tests requested by the study site at services close to home. Eligible participants received packages with abortion medication, analgesics, and instructions and a remote follow-up contact was scheduled for 7 to 14 days later. Primary outcomes include abortion outcome, management of adverse events, acceptability, and feasibility measures such as package reception and follow-up contact, and challenges to get pre- and post-abortion tests. RESULTS: We conducted 581 screenings and sent 378 study packages, all successfully received, reaching abortion seekers in all 32 states. All participants took medications before 70 days gestational age as per study protocol. Abortion outcome was determined for 87% of participants (330/378); 93% (306/330) had a successful abortion without intervention and 18 with intervention; 6 individuals decided to continue the pregnancy. Participants reported high satisfaction with TeleAborto, citing convenience as their most valued aspect (85%; 264/311). CONCLUSIONS: This study showed that guided self-managed telemedicine abortion is safe, acceptable, and feasible in Mexico. The model has the potential to close the access gap for indigenous and rural populations, and those that rely on public sector services. IMPLICATIONS: The findings contribute evidence in support of telemedicine models for early medical abortion, demonstrating the feasibility of a self-management protocol implemented with supportive health care providers and the potential for a broad geographical reach in Mexico.