Circular RNA hsa_circ_0087893 participates in intraventricular hemorrhage occurrence and progression possibly as a competitive endogenous RNA in preterm infants / 南方医科大学学报

OBJECTIVE@#To screen for differentially expressed circular RNAs (circRNAs) in the serum of preterm infants with intraventricular hemorrhage (IVH) and explore the competitive endogenous RNA (ceRNA) mechanism of circRNAs in IVH in these infants.@*METHODS@#Fifty preterm infants (gestational age of 28 to 34 weeks) admitted in our department between January, 2019 and January, 2020 were enrolled in this study, including 25 with a MRI diagnosis of IVH and 25 without IVH. Serum samples were collected from 3 randomly selected infants from each group for profiling differentially expressed circRNAs using circRNA array technique. Gene ontology (GO) and pathway analyses were performed to reveal the function of the identified circRNAs. The circRNA-miRNA-mRNA network was constructed to identify the co-expression network of hsa_circ_ 0087893.@*RESULTS@#A total of 121 differentially expressed circRNAs were identified in the infants with IVH, including 62 up-regulated and 59 down-regulated circRNAs. GO and pathway analyses showed that these circRNAs were involved in multiple biological processes and pathways, including cell proliferation, activation and death, DNA damage and repair, retinol metabolism, sphingolipid metabolism, cell adhesion molecules. Among these circRNAs, hsa_circ_0087893 was found to have significant down-regulation in IVH group and co-express with 41 miRNAs and 15 mRNAs (such as miR-214-3p, miR-761, miR-183-5p, AKR1B1, KRT34, PPP2CB, and HPRT1).@*CONCLUSION@#The circRNA hsa_circ_0087893 may function as a ceRNA and play an important role in the occurrence and progression of IVH in preterm infants.

Antecedentes familiares como factores de riesgo / Familiar antecedents as risk factors

En el presente estudio se analizó la tendencia familiar de cinco patologías: hipertensión arterial esencial (HTA), diabetes mellitus (DM), cardiopatía isquémica crónica (CIC), accidentes cerebrovasculares (ACV), y neoplasias malignas (Ca), y la posible relación entre cada una de ellas como factor de riesgo en base a los antecedentes maternos o paternos de 258 pacientes hospitalizados (datos obtenidos del 17 al 26 de enero de 1991, Hospital Vargas), Al comparar los grupos de pacientes que sufrían alguna de las cinco patologías mencionadas con el grupo de pacientes hospitalizados por patologías distintas (grupo control) se observaron asociaciones estadísticamente significativas entre: a) antecedentes maternos o paternos de A y prevalencia de ACV; b) antecendentes maternos de la de CIC y prevalencia de CIC e HTA; c) antecedentes maternos o paternos de ACV y prevalencia de ACV y Ca; y d) antecedentes maternos de Ca y prevalencia de HTA. Estas asociaciones pudieran apoyar la idea de que el antecedente familiar de una patología pudiera constituir un fator de riesgo no sólo para esa misma patología, sino también para otras tal vez genéticamente relacionadas. Nuevos estudios, con mayor muestra y diferentes variables, serían necesarios para explotar más a fondo estas supuestas asociaciones