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Ingrid Segers Follicle Biology Laboratory, Vrije Universiteit Brussel, Laarbeeklaan 101, 1090 Jette, Belgium

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Tom Adriaenssens Follicle Biology Laboratory, Vrije Universiteit Brussel, Laarbeeklaan 101, 1090 Jette, Belgium

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Sandra Wathlet Follicle Biology Laboratory, Vrije Universiteit Brussel, Laarbeeklaan 101, 1090 Jette, Belgium

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Johan Smitz Follicle Biology Laboratory, Vrije Universiteit Brussel, Laarbeeklaan 101, 1090 Jette, Belgium

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). Therefore, in the current study, early antral follicles were exposed to five different gonadotropin regimens relevant to the ART clinic. A low rFSH tonus (10 mIU/ml) was used during the preantral follicle stage (from days 1 to 6), followed by a high FSH

Article Type:
Research Article
DOI:
https://doi.org/10.1530/JOE-12-0150
Volume/Issue:
Volume 215: Issue 2
Free access
D Fernandois Laboratory of Neurobiochemistry, Laboratorio de alteraciones Reproductivas y Metabólicas, Department of Biochemistry and Molecular Biology, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago 8380492, Chile

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E Na Laboratory of Neurobiochemistry, Laboratorio de alteraciones Reproductivas y Metabólicas, Department of Biochemistry and Molecular Biology, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago 8380492, Chile

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F Cuevas Laboratory of Neurobiochemistry, Laboratorio de alteraciones Reproductivas y Metabólicas, Department of Biochemistry and Molecular Biology, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago 8380492, Chile

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G Cruz Laboratory of Neurobiochemistry, Laboratorio de alteraciones Reproductivas y Metabólicas, Department of Biochemistry and Molecular Biology, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago 8380492, Chile

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H E Lara Laboratory of Neurobiochemistry, Laboratorio de alteraciones Reproductivas y Metabólicas, Department of Biochemistry and Molecular Biology, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago 8380492, Chile

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A H Paredes Laboratory of Neurobiochemistry, Laboratorio de alteraciones Reproductivas y Metabólicas, Department of Biochemistry and Molecular Biology, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago 8380492, Chile

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). Recently, it was demonstrated that KP receptor haplo-insufficiency in mice caused premature ovarian failure, resulting in the progressive loss of oocytes, preantral and antral follicles ( Gaytan et al . 2014 ). Altogether, these data suggest a potential

Article Type:
Research Article
DOI:
https://doi.org/10.1530/JOE-15-0429
Volume/Issue:
Volume 228: Issue 3
Free access
Michael W Pankhurst Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand

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primary stage ( Baarends et al. 1995 , Gruijters et al. 2003 , Weenen et al. 2004 ). Expression of AMH increases as the follicle develops through the preantral and small antral stages in humans ( Weenen et al. 2004 ). Similar patterns occur in

Article Type:
Review Article
DOI:
https://doi.org/10.1530/JOE-16-0522
Volume/Issue:
Volume 233: Issue 1
Free access
Hong-Hui Wang College of Life Sciences, Qingdao Agricultural University, Qingdao, China
State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

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Qian Cui Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

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Teng Zhang State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

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Lei Guo State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China

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Ming-Zhe Dong College of Life Sciences, Qingdao Agricultural University, Qingdao, China
State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

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Yi Hou State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China

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Zhen-Bo Wang State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China

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Wei Shen Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

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Jun-Yu Ma Laboratory for Germ Cell Metabolism, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

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Qing-Yuan Sun College of Life Sciences, Qingdao Agricultural University, Qingdao, China
State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

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. 2015 ). According to follicular developmental stage and gonadotropin dependence, preantral follicle stage (including primordial, primary, and secondary follicles) is named as the gonadotropin-responsive phase and the other stages (including antral and

Article Type:
Research Article
DOI:
https://doi.org/10.1530/JOE-16-0174
Volume/Issue:
Volume 232: Issue 2
Free access
Karine Reynaud
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Sylvie Chastant-Maillard
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Séverine Batard
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Sandra Thoumire
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Philippe Monget UMR 1198 INRA/ENVA Biologie du Développement et Reproduction, Physiologie de la Reproduction et des Comportements, Alfort Veterinary School, 7 Avenue du Général de Gaulle, 94704 Maisons-Alfort Cedex, France

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is not required for the recruitment of primordial follicles or for the growth of preantral follicles ( Baker et al . 1996 ). In contrast, ovaries from IGF1 knockout mice ( Baker et al . 1996 ) do not contain any antral follicles, and are thus unable

Article Type:
Research Article
DOI:
https://doi.org/10.1677/JOE-09-0450
Volume/Issue:
Volume 206: Issue 1
Free access
Claire Glister School of Biological Sciences, The University of Reading, Whiteknights, Reading RG6 6AJ, UK
School of Biomolecular Sciences, Oxford Brookes University, Oxford OX3 OBP, UK

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Nigel P Groome School of Biological Sciences, The University of Reading, Whiteknights, Reading RG6 6AJ, UK
School of Biomolecular Sciences, Oxford Brookes University, Oxford OX3 OBP, UK

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Philip G Knight School of Biological Sciences, The University of Reading, Whiteknights, Reading RG6 6AJ, UK
School of Biomolecular Sciences, Oxford Brookes University, Oxford OX3 OBP, UK

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intrafollicular balance between inhibin, activin and FS fluctuates in preantral and/or smaller antral-stage follicles should not be ruled out. The present finding that follicle growth from 9–20 mm was associated with a highly significant 2-fold reduction

Article Type:
Research Article
DOI:
https://doi.org/10.1677/joe.1.06485
Volume/Issue:
Volume 188: Issue 2
Free access
Federica Innocenti DAHFMO, Unit of Histology and Medical Embryology, Sapienza University of Rome, Rome, Italy

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Lidia Cerquetti Endocrinology, Department of Clinical and Molecular Medicine, Sant’Andrea Hospital, Sapienza University of Rome, Rome, Italy

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Serena Pezzilli Endocrinology, Department of Clinical and Molecular Medicine, Sant’Andrea Hospital, Sapienza University of Rome, Rome, Italy

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Barbara Bucci S. Pietro Hospital Fatebenefratelli, Rome, Italy

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Vincenzo Toscano Endocrinology, Department of Clinical and Molecular Medicine, Sant’Andrea Hospital, Sapienza University of Rome, Rome, Italy

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Rita Canipari DAHFMO, Unit of Histology and Medical Embryology, Sapienza University of Rome, Rome, Italy

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Antonio Stigliano Endocrinology, Department of Clinical and Molecular Medicine, Sant’Andrea Hospital, Sapienza University of Rome, Rome, Italy

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categorized as follows: monolaminar follicles with one layer of cuboidal GCs; bilaminar follicles, surrounded by two complete layers of cuboidal GCs; preantral follicles with several layers of GCs and no antrum; early antral follicles with vacuolization of the

Article Type:
Research Article
DOI:
https://doi.org/10.1530/JOE-17-0203
Volume/Issue:
Volume 234: Issue 1
Free access
Daniela Fernandois Department of Biochemistry and Molecular Biology, Laboratory of Neurobiochemistry, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile

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Gonzalo Cruz Laboratorio de Alteraciones Reproductivas y Metabólicas, Centro de Neurobiología y Plasticidad Cerebral (CNPC), Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile

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Eun Kyung Na Department of Biochemistry and Molecular Biology, Laboratory of Neurobiochemistry, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile

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Hernán E Lara Department of Biochemistry and Molecular Biology, Laboratory of Neurobiochemistry, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile

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Alfonso H Paredes Department of Biochemistry and Molecular Biology, Laboratory of Neurobiochemistry, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile

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follicles were found in the propranolol group than those in the saline group ( Fig. 4A and B ). Figure 3 Total number of preantral follicles in subfertile ovaries with a beta-adrenergic pharmacological blockade. Total number of follicles counted in

Article Type:
Research Article
DOI:
https://doi.org/10.1530/JOE-16-0181
Volume/Issue:
Volume 232: Issue 1
Free access
Christopher A Price Faculty of Veterinary Medicine, Centre de recherche en reproduction animale, University of Montreal, 3200 rue Sicotte, St‐Hyacinthe, Quebec, Canada J2S 7C6

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Introduction Development of the ovarian follicle from preantral to preovulatory stages is highly complex and involves multiple endocrine and paracrine signaling pathways. It is well known that the pituitary gonadotrophins are the main endocrine

Article Type:
Review Article
DOI:
https://doi.org/10.1530/JOE-15-0414
Volume/Issue:
Volume 228: Issue 2
Free access
Norbert Gleicher The Center for Human Reproduction, New York, New York, USA
The Foundation for Reproductive Medicine, New York, New York, USA
The Brivanlou Stem Cell Biology and Molecular Embryology Laboratory, The Rockefeller University, New York, New York, USA

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Vitaly A Kushnir The Center for Human Reproduction, New York, New York, USA
Department of Obstetrics and Gynecology, Wake Forest University, Winston Salem, North Carolina, USA

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David F Albertini The Center for Human Reproduction, New York, New York, USA
Department of Molecular and Integrative Physiology, The University of Kansas Medical Center, Kansas City, Kansas, USA

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David H Barad The Center for Human Reproduction, New York, New York, USA
The Foundation for Reproductive Medicine, New York, New York, USA

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small growing follicle pool up to small preantral follicle stages, is almost as ­important. If FOR is diminished for age, a patient is considered to suffer from premature ovarian aging (POA) or occult primary ovarian insufficiency (oPOI), found in

Article Type:
Review Article
DOI:
https://doi.org/10.1530/JOE-16-0105
Volume/Issue:
Volume 230: Issue 1
Free access