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Relevant bibliographies by topics / Oocyte morphological classification

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Academic literature on the topic 'Oocyte morphological classification'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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Journal articles on the topic "Oocyte morphological classification"

1

Wang, Qiang, and Qing-Yuan Sun. "Evaluation of oocyte quality: morphological, cellular and molecular predictors." Reproduction, Fertility and Development 19, no. 1 (2007): 1. http://dx.doi.org/10.1071/rd06103.

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Mounting evidence that oocyte quality profoundly affects fertilisation and subsequent embryo development drives the continued search for reliable predictors of oocyte developmental competence. In the present review, we provide an overall summary and analysis of potential criteria that can be used to evaluate oocyte quality. These criteria are specifically classified as morphological and cellular/molecular predictors. Traditional methods for the evaluation of oocyte quality are based on morphological classification of the follicle, cumulus–oocyte complex, polar body and/or meiotic spindle. Alth

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2

Bukowska, D., B. Kempisty, H. Piotrowska, et al. "The invasive and new non-invasive methods of mammalian oocyte and embryo quality assessment: a review." Veterinární Medicína 57, No. 4 (2012): 169–76. http://dx.doi.org/10.17221/5913-vetmed.

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&nbsp;The quality of oocytes-embryos can be determined by several techniques, including morphological, molecular, cellular and biochemical ones. The morphological methods of female gamete or embryo quality assessment often use thе following in vitro manipulation procedures such as: in vitro maturation (IVM), in vitro fertilization (IVF) and in vitro embryo production (IVP). However, these methods are highly subjective and the morphological classification of oocytes or embryos is not always compatible with their ability to grow and develop. Additionally, molecular biology methods are object

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3

Cai, L., E. Kim, S. U. Hwang, et al. "156 EFFECTS OF MORPHOLOGY TYPE OF POLAR BODY ON PORCINE OOCYTE QUALITY AND DEVELOPMENTAL POTENTIAL AFTER IN VITRO FERTILIZATION." Reproduction, Fertility and Development 26, no. 1 (2014): 192. http://dx.doi.org/10.1071/rdv26n1ab156.

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Evaluation of morphology of first polar body (1st PB) could be a method for the oocyte's quality and developmental competence. The developmental potential of oocyte with fragmented PB after in vitro maturation (IVM) is a controversial issue. The aim of this study is to investigate the effects of PB morphology type on oocyte quality and developmental competence after IVF. Porcine ovaries were obtained from prepubertal gilts at a local slaughterhouse and transported to the laboratory within 2 h in physiological saline supplemented with 100 IU mL–1 penicillin G and 100 mg mL–1 streptomycin sulfat

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4

Brito, AB, DCC Brito, W. B. Silva, et al. "Morphology and morphometry of preantral follicles, and immunolocalization of angiogenic factors in ovarian tissue from the neotropical primateSapajus apella." Zygote 26, no. 5 (2018): 424–29. http://dx.doi.org/10.1017/s0967199418000503.

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SummaryOvarian biopsies from five health adult monkeys were collected by exploratory laparotomy. Preantral follicles (primordial, primary, and secondary) were classified as normal or degenerated and submitted to morphometric analysis in which granulosa cell counts and the areas of follicles, oocytes, and oocyte nuclei were measured. Ovarian fragments were also immunolabelled for the quantitative analysis of VEGFA and CD31 protein expression in the ovarian tissue and in the preantral follicles. In total, 213 preantral follicles was examined for morphometry and morphological classification. From

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5

Antosik, P., B. Kempisty, M. Jackowska, et al. "Assessment of transcript and protein levels contributing to cell cycle control and gap junction connections in morphologically variable groups of porcine cumulus-oocyte complexes." Veterinární Medicína 55, No. 10 (2010): 512–21. http://dx.doi.org/10.17221/2941-vetmed.

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Oocytes and somatic cumulus cells are connected by an extensive network of gap junctions. These connections contribute in a major way to oocyte maturation and developmental competence. Cumulus-oocyte complexes (COCs) were cultured in standard porcine IVM culture medium (TCM 199) for 44 h. The morphological classification of COCs is based on the number of cumulus cell layers and the degree of their compaction, as well as on cytoplasm composition (homogenous, heterogeneous). The obtained COCs were divided into four grades according to this classification system. By assessing the activity of gluc

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6

Bernal-Ulloa, S. M., V. A. van der Weijden, J. T. Bick, A. B. Rüegg, B. Drews, and S. E. Ulbrich. "107 Insights from roe deer oocyte transcriptome across embryonic diapause." Reproduction, Fertility and Development 31, no. 1 (2019): 179. http://dx.doi.org/10.1071/rdv31n1ab107.

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Embryonic developmental arrest, known as diapause, has been reported in more than 130 species. However, its mechanisms are still not completely understood. In the roe deer, the only known ungulate that exhibits this phenomenon, diapause lasts for approximately 5 months, starting after the rut period in mid-July to early August and ending with embryo elongation and implantation in December/January. Little is known regarding oocyte characteristics during this period. Here, we analysed the roe deer oocyte transcriptome as a model to understand diapause effects on oocyte features during embryonic

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Varisanga, M. D., C. Sumantri, M. Murakami, M. Fahrudin, and T. Suzuki. "Morphological classification of the ovaries in relation to the subsequent oocyte quality for IVF-produced bovine embryos." Theriogenology 50, no. 7 (1998): 1015–23. http://dx.doi.org/10.1016/s0093-691x(98)00204-0.

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8

Hanstedt, A., S. Wilkening, K. Brüning, Ä. Honnens, and C. Wrenzycki. "128 EFFECT OF PERIFOLLICULAR BLOOD FLOW ON THE QUALITY OF OOCYTES COLLECTED DURING REPEATED OPU SESSIONS." Reproduction, Fertility and Development 22, no. 1 (2010): 223. http://dx.doi.org/10.1071/rdv22n1ab128.

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Approximately 20% of the cumulus-oocyte complexes (COC) collected from living animals during repeated ovum pick-up (OPU) sessions develop to the blastocyst stage. An increase in the blood supply to individual follicles appears to be associated with follicular growth rates, while a reduction seems to be closely related to follicular atresia (Acosta TJ et al. 2003; Reproduction, 125, 759-767). Recently, it has been shown that differences in perifollicular blood flow during repeated OPU sessions once weekly were predictive of oocyte competence. The purpose of this study was to determine whether q

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9

Arrivabene Neves, Camila, Lucilene dos Santos Silva, Camila Ernanda Sousa de Carvalho, et al. "Culture of goat preantral follicles in situ associated with mesenchymal stem cell from bone marrow." Zygote 28, no. 1 (2019): 65–71. http://dx.doi.org/10.1017/s0967199419000686.

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SummaryThis study aims to develop an in vitro co-culture system of in situ goat preantral follicles with bone marrow-derived mesenchymal stem cells (BM-MSC), evaluating the influence of these cells on follicular growth, rate of activation and morphologically normal follicles. Fragments of ovarian cortex were cultured for 1 or 7 days in the presence of BM-MSC (BM-MSC+) and absence of BM-MSC (BM-MSC−). Histological sections of the fragments were analysed and data were obtained regarding morphological classification, survival rate of morphologically normal follicles and rate of follicular activat

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10

Terazono, T., Y. Kaedei, Z. Namula, V. L. Vien, F. Tanihara, and T. Otoi. "271 VIABILITY OF OOCYTES FROM CANINE OVARIES GRAFTED IN THE PROXIMAL PORTION OF THE BODY SURFACE." Reproduction, Fertility and Development 23, no. 1 (2011): 233. http://dx.doi.org/10.1071/rdv23n1ab271.

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Numerous studies have reported that follicles in ovarian tissue are not only able to survive ovarian grafting but also to grow from the early to advanced stages of follicular development. The site of grafting is very important for tissue survival and follicle development after transplantation. Several grafting techniques have been reported, basically differing only in the location to which the ovarian grafts have been transplanted, such as the bursal cavity, kidney capsule, and subcutaneous sites. The objective of the present study was to determine the viability of canine oocytes from ovaries

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Dissertations / Theses on the topic "Oocyte morphological classification"

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Niciura, Simone Cristina Méo. "Interação núcleo-citoplasmática em embriões e expressão de genes "imprinted" em fetos bovinos produzidos in vivo, in vitro e partenogenéticos /." Jaboticabal : [s.n.], 2005. http://hdl.handle.net/11449/105949.

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Orientador: Joaquim Mansano Garcia<br>Banca: Flávio Vieira Meirelles<br>Banca: Claudia Lima Verde Leal<br>Banca: Vera Fernanda Martins Hossepian de Lima<br>Banca: Gisele Zoccal Mingoti<br>Resumo: A maturação oocitária é marcada pela retomada da primeira divisão da meiose, com progressão do estádio de Vesícula Germinativa (GV) da Prófase I até a Metáfase II (MII), e inclui todos os eventos necessários para que o oócito expresse seu potencial máximo de desenvolvimento após a fecundação. Para avaliarmos a eficiência da maturação in vitro (MIV), utilizamos oócitos classificados em viáveis (graus I

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Niciura, Simone Cristina Méo [UNESP]. "Interação núcleo-citoplasmática em embriões e expressão de genes imprinted em fetos bovinos produzidos in vivo, in vitro e partenogenéticos." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/105949.

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Made available in DSpace on 2014-06-11T19:35:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-12-19Bitstream added on 2014-06-13T19:24:36Z : No. of bitstreams: 1 niciura_scm_dr_jabo.pdf: 1029270 bytes, checksum: 8a93cc4207fdb3426be68df4fa064ef9 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>A maturação oocitária é marcada pela retomada da primeira divisão da meiose, com progressão do estádio de Vesícula Germinativa (GV) da Prófase I até a Metáfase II (MII), e inclui todos os eventos necessários para que o oócito expresse seu potencial máximo de desenvolvim

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