THE DEVELOPMENTAL COMPETENCE OF OOCYTES RETRIEVED FROM THE LEADING FOLLICLE IN CONTROLLED OVARIAN STIMULATED CYCLES

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PAES DE ALMEIDA FERREIRA BRAGA DANIELA; CARVALHO DE SOUZA BONETTI TATIANA; DALE COTRIM GUERREIRO DA SILVA ISMAEL; SOUZA SETTI AMANDA; IACONELLI ASSUMPTO JR.; BORGES EDSON JR.

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Journal: International Journal of Fertility & Sterility Year:2013 | Volume:6 | Issue:4 Page(s): 272-277

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Title

THE DEVELOPMENTAL COMPETENCE OF OOCYTES RETRIEVED FROM THE LEADING FOLLICLE IN CONTROLLED OVARIAN STIMULATED CYCLES

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Keywords

OOCYTE RETRIEVAL

OVARIAN STIMULATION

VACUOLIZATION

INTRACYTOPLASMIC SPERM INJECTION

Abstract

Background: This study compares the developmental capacity of gametes retrieved from the largest follicle with small follicles of a cohort in controlled ovarian stimulated cycles.Materials and Methods: This prospective study performed in a private assisted fertilization center included 1016 follicles collected from 96 patients who underwent intra cytoplasmic sperm injection (ICSI). After follicular aspiration, oocytes were assigned to two groups according to the diameter of the derived follicle. The large follicle group (n=96) comprised oocytes derived from the leading follicle of the cohort and the small follicle group (n=920) consisted oocytes derived from the smaller follicles of the cohort. The fertilization and percentage of top quality embryos were compared between groups by Chi-square or Fisher’s exact test, where appropriate.The effect of the follicular diameter on oocyte dimorphism was assessed by binary logistic regression.Results: A significantly higher percentage of oocytes derived from the leading follicle were in the metaphase II (MII) stage (100 vs.70.0%, p<0.001). However we observed no significant differences regarding the percentage of degenerated oocytes between the large (6.25%) and small follicle (5.0%) groups (p=0.550). Regression analysis demonstrated a nearly two-fold increase in the incidence of vacuoles in oocytes derived from the largest follicle of the cohort (OR: 1.81, p=0.046).The fertilization rate (50.0 vs.38.8%, p=0.038) and the percentage of top quality embryos (84.7 vs.76.4%, p=0.040) were significantly higher for oocytes derived from the largest follicle. However, the percentage of abnormal fertilized oocytes was equally distributed between the large follicle (15.0%) and small follicle (12.8%) groups (p=0.550).Conclusion: Our data suggest that intrafollicular mechanisms within the larger follicle of the cohort may allow for these follicles to amplify the responsiveness to exogenous gonadotropin, which leads to the formation of more competent oocytes with higher fertilization and developmental capacities.

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APA: Copy

PAES DE ALMEIDA FERREIRA BRAGA, DANIELA, CARVALHO DE SOUZA BONETTI, TATIANA, DALE COTRIM GUERREIRO DA SILVA, ISMAEL, SOUZA SETTI, AMANDA, IACONELLI, ASSUMPTO JR., & BORGES, EDSON JR.. (2013). THE DEVELOPMENTAL COMPETENCE OF OOCYTES RETRIEVED FROM THE LEADING FOLLICLE IN CONTROLLED OVARIAN STIMULATED CYCLES. INTERNATIONAL JOURNAL OF FERTILITY AND STERILITY, 6(4), 272-277. SID. https://sid.ir/paper/305381/en

Vancouver: Copy

PAES DE ALMEIDA FERREIRA BRAGA DANIELA, CARVALHO DE SOUZA BONETTI TATIANA, DALE COTRIM GUERREIRO DA SILVA ISMAEL, SOUZA SETTI AMANDA, IACONELLI ASSUMPTO JR., BORGES EDSON JR.. THE DEVELOPMENTAL COMPETENCE OF OOCYTES RETRIEVED FROM THE LEADING FOLLICLE IN CONTROLLED OVARIAN STIMULATED CYCLES. INTERNATIONAL JOURNAL OF FERTILITY AND STERILITY[Internet]. 2013;6(4):272-277. Available from: https://sid.ir/paper/305381/en

IEEE: Copy

DANIELA PAES DE ALMEIDA FERREIRA BRAGA, TATIANA CARVALHO DE SOUZA BONETTI, ISMAEL DALE COTRIM GUERREIRO DA SILVA, AMANDA SOUZA SETTI, ASSUMPTO JR. IACONELLI, and EDSON JR. BORGES, “THE DEVELOPMENTAL COMPETENCE OF OOCYTES RETRIEVED FROM THE LEADING FOLLICLE IN CONTROLLED OVARIAN STIMULATED CYCLES,” INTERNATIONAL JOURNAL OF FERTILITY AND STERILITY, vol. 6, no. 4, pp. 272–277, 2013, [Online]. Available: https://sid.ir/paper/305381/en

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