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Body Mass Index in Relation to Extracellular Vesicle-Linked microRNAs in Human Follicular Fluid



Details

  • Personal Author:
  • Description:
    Objective: To study whether increased body mass index is associated with altered expression of extracellular vesicle microRNAs (EV-linked miRNAs) in human follicular fluid. Design: Cross-sectional study. Setting: Tertiary-care university-affiliated center. Patient(s): One hundred thirty-three women undergoing in vitro fertilization (IVF) were recruited from January 2014 to August 2016. Interventions(s): None. Main Outcome Measure(s): EV-linked miRNAs were isolated from follicular fluid and their expression profiles were measured with the use of the Taqman Open Array Human miRNA panel. EV-linked miRNAs were globally normalized and inverse-normal transformed. Associations between body mass index (BMI) and EV-linked miRNA outcomes were analyzed by means of multivariate linear regression and principal component analysis. Result(s): Eighteen EV-linked miRNAs were associated with an increase in BMI after adjusting for age, ethnicity, smoking status, and batch effects. Hsa-miR-328 remained significant after false discovery rate adjustments. Principal component analyses identified the first principal component to account for 40% of the variation in our EV-linked miRNA dataset, and adjusted linear regression found that the first principal component was significantly associated with BMI after multiple testing adjustments. Using Kyoto Encyclopedia of Genes and Genomes enrichment analyses, we predicted gene targets of EV-linked miRNA in silico and identified PI3K-Akt signaling, ECM-receptor interaction, focal adhesion, FoxO signaling, and oocyte meiosis pathways. Conclusion(s): These results show that a 1-unit increase in BMI is associated with altered follicular fluid expression of EV-linked miRNAs that may influence follicular and oocyte developmental pathways. Our findings provide potential insight into a mechanistic explanation for the reduced fertility rates associated with increased BMI. Relación entre el índice de masa corporal y los microRNAs ligados a vesículas extracelulares del líquido folicular humano Objetivo: Estudiar si un aumento en el índice de masa corporal (IMC) está asociado con una expresión alterada de los microRNAs asociados a vesículas extracelulares (EVlinked miRNAs) en el líquido folicular humano. Diseño: Estudio transversal. Ámbito: Centro universitario de atención terciaria. Paciente(s): Se reclutaron 133 mujeres sometidas a un ciclo de fecundación in vitro (FIV) entre enero de 2014 y agosto de 2016. Intervención(es): Ninguna. Principal(es) medida(s) de resultado(s): Se aislaron los EV-linked miRNAs del líquido folicular y se midió su perfil de expresión mediante el uso de un panel Taqman Open Array Human miRNA. Los EV-linked miRNAs fueron globalmente normalizados y transformados de forma inversamente-normal. La relación entre el índice de masa corporal (IMC) y el resultado de los EV-linked miRNA se analizó mediante regresión lineal multivariante y análisis de componentes principales. Resultados (s): Tras hacer un ajuste por edad, etnia, hábito de fumar y lotes, se observó una relación entre 18 EV-linked miRNAs y un aumento del IMC. Los Hsa-miR-328 permanecieron significativos tras los ajustes de hallazgos falsos. El análisis de componentes principales identificó el principal componente responsable de una variación del 40% en nuestro conjunto de datos de EV-linked miRNA, y ajustando mediante regresión lineal se encontró que el componente principal estaba asociado con el IMC, tras ajustes de pruebas múltiples. Utilizando la enciclopedia Kyoto de genes y análisis enriquecido del genoma, predijimos genes dianas de EV-linked miRN in silico e identificamos la señalización de PI3K-Akt, la interacción con el receptor matriz extracelular (ECM), la adhesión focal, la señalización Fox0 y los circuitos de la meiosis ovocitaria. Conclusión (es): Estos resultados demuestran que el aumento de 1 unidad en el IMC está asociado con la expresión alterada de EV-linked miRNAs en el líquido, el cual puede influir en vías implicadas en el desarrollo folicular y ovocitario. Nuestros hallazgos proporcionan una percepción potencial sobre una explicación mecánica de la reducción de la fertilidad asociada a un elevado IMC. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0015-0282
  • Document Type:
  • Funding:
  • Genre:
  • Place as Subject:
  • CIO:
  • Topic:
  • Location:
  • Volume:
    112
  • Issue:
    2
  • NIOSHTIC Number:
    nn:20056809
  • Citation:
    Fertil Steril 2019 Aug; 112(2):387-396.e3
  • Contact Point Address:
    Ronit Machtinger, M.D., Department of Obstetrics and Gynecology, Sheba Medical Center, Tel-Aviv University, Ramat-Gan, Israel 52561
  • Email:
    ronit.machtinger@sheba.health.gov.il
  • Federal Fiscal Year:
    2019
  • Performing Organization:
    Harvard School of Public Health
  • Peer Reviewed:
    True
  • Start Date:
    20050701
  • Source Full Name:
    Fertility and Sterility
  • End Date:
    20280630
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:79fd38ddb396e7ed21e8389d355052533725479fa2572d268f42670df7819c9cf22ddb9f00ac49013da35fb8c773a371280dddcee6cf29e9e854b32c2bf0349a
  • Download URL:
  • File Type:
    Filetype[PDF - 1.24 MB ]
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