As a scientist, one of the most glorious moments in your life is the recognition of your research


Dr. Chang was working as full-time scientist at New York University in the United States

in 2001 and published a brand new academic thesis in international journals in 2005

“Developmental incompetency of denuded mouse oocytes undergoing maturation

in vitro is ooplasmic in nature and is associated with aberrant Oct-4 expression”


This essay was published in a famous journal [Human Reproduction],

and Ryuzo Yanagimachi, a world famous expert in reproductive professor,

changed his original idea and concept and sent a postcard thanks to this essay by Dr. Chang.


In recent years, this essay has been cited by nature cell biology as the author of the dissertation,

and the article cited by Dr. Chang is “Somatic cells regulate maternal mRNA translation and developmental competence of mouse oocytes.

” Dr. Chang’s paper is in the 6th position rank for reference in this article.

At the same time, Dr. James A Grifo, who is before colleague with Dr. Chang of New York University,

sent a message and congratulation that Dr. Chang’s research was recognized by the world.


This new essay has been cited by many journals and textbooks in addition to references to nature cell biology in journals,

and scholars around the world unanimously agree with Dr. Chang’s research.

The following is a reference to this paper journals and textbooks


題目 第一作者 作者國籍 投稿期刊 impact factor
自然受精及體細胞核移置兔胚之基因表現與發育潛能探討 陳建宏 台灣 台大生物科技研究所學位論文
单层细胞共培养对猪去卵丘卵母细胞体外成熟和孤雌发育的影响 顾晓龙 中國 《中国兽医学报》2011年 第4期 604-608页 0.661
山羊卵泡大小对卵母细胞体外发育能力的影响 吴志南 中國 《苏州大学学报:医学版》2009年 第5期 891-893页 共3页
Control of Oocyte Growth and Development by Intercellular Communication Within the Follicular Niche Stephany El-Hayek 加拿大 Molecular Mechanisms of Cell Differentiation in Gonad Development pp 191-224
The Use of Micromanipulation Methods as a Tool to Prevention of Transmission of Mutated Mitochondrial DNA HelenaFulka 捷克 Current Topics in Developmental Biology Volume 77, 2007, Pages 187-211 4.000
A Method for Chronological Intravital Imaging of Bovine Oocytes during In Vitro Maturation Morten R. Petersen 丹麥 Microscopy and Microanalysis 14, 549–560, 2008 1.891
Assessment of the developmental competence of human somatic cell nuclear transfer embryos by oocyte morphology classification Yang Yu 中國 Human Reproduction, Vol.24, No.3 pp. 649–657, 2009 5.020
OCT-4 Gene Expression Pattern In Different Grades Of Buffalo (Bubalus bubalis) Oocytes Ch. Srinivasa Prasad 印度 Buffalo Bulletin (June 2010) Vol.29 No.2 0.104
Co-culture embedded in cumulus clumps promotes maturation of denuded oocytes and reconstructs gap junctions between oocytes and cumulus cells Guixue Feng 中國 Zygote 21 (August), pp. 231–237. 1.053
Coculturing denuded oocytes during the in vitro maturation of bovine cumulus oocyte complexes exerts a synergistic effect on embryo development S.R. Dey 韓國 Theriogenology 77 (2012) 1064–1077 1.986
Concanavalin-A Induces Granulosa Cell Death and Inhibits FSH-Mediated Follicular Growth and Ovarian Maturation in Female Rats Ethel V. Velasquez 智利 Endocrinology,  2013, 154(5):1885–1896 4.286
Cyclic AMP elevating agents promote cumulus cell survival and hyaluronan-matrix stability thereby prolonging the time of mouse oocyte fertilizability Monica Di Giacomo 義大利 The Journal of Biological Chemistry, 291 (2016), pp. 3821-3836 4.125
Developmental Potential of Selectively Enucleated Immature Mouse Oocytes Upon Nuclear Transfer A.A. MOHAMMED 波蘭 MOLECULAR REPRODUCTION AND DEVELOPMENT 75:1269–1280 (2008) 2.316
Effects of cumulus cells on rabbit oocyte in vitro maturation Y. Tao 中國 Journal of Animal Physiology and Animal Nutrition 92 (2008) 438–447 1.244
Effects of Ooplasm Manipulation on DNA Methylation and Growth of Progeny in Mice Yong Cheng 中國 BIOLOGY OF REPRODUCTION 80, 464–472 (2009) 3.432
Effect of maturation medium on in vitro cleavage of canine oocytes fertilized with fresh and cooled homologous semen B. de A´ vila Rodrigues 巴西 Zygote 15 (February), pp. 43–53. 1.053
Injection of Mammalian Metaphase II Oocytes with Short Interfering RNAs to Dissect Meiotic and Early Mitotic Events Manami Amanai 日本 BIOLOGY OF REPRODUCTION 75, 891–898 (2006) 3.432
Intrinsic quality of goat oocytes already found denuded at collection for in vitro embryo production Joanna Maria Gonçalves Souza-Fabjan 法國 Theriogenology Nov;86(8 )2016 1–10 1.986
Live offspring from vitrified blastocysts derived from fresh and cryopreserved ovarian tissue grafts of adult mice Xiaoqian Wang 澳洲 Reproduction (2009) 138 527–535 3.100
Maturation and Developmental Competence of Selectively Enucleated Germinal Vesicle Oocytes of Mammals upon nuclear transfer Abd El-Nasser Ahmed Mohammed 英國 International Journal of Current Engineering and Technology, Vol.4, No.1 (Feb 2014) 1.274
Mechanisms contributing to the reduced developmental
competence of glucosamine-exposed mouse oocytes
Cheryl J. Schelbach 澳洲 Reproduction, Fertility and Development, 2010, 22, 771–779 2.656
Morphometric assessment of in vitro matured dromedary camel oocytes determines the developmental competence after parthenogenetic activation Islam M. Saadeldin 埃及 Theriogenology 1.986
Mouse Cumulus-Denuded Oocytes Restore Developmental Capacity Completely When Matured with Optimal Supplementation of Cysteamine, Cystine, and Cumulus Cells Ping Zhou 中國 BIOLOGY OF REPRODUCTION 82, 759–768 (2010) 3.432
Paracrine factors from cumulus-enclosed oocytes ensure the successful maturation and fertilization in vitro of denuded oocytes in the cat model Natasha M. Godard, M.Sc. 美國 Fertility and Sterility Vol. 91, No. 5, Supplement, May 2009 4.373
Putrescine supplementation during in vitro maturation
of aged mouse oocytes improves the quality of blastocysts
Dandan Liu 中國 Reproduction, Fertility and Development 2.656
Recovery of Functional Oocytes from Cultured Premeiotic Germ Cells After Kidney Capsule Transplantation Bo Chen 中國 STEM CELLS AND DEVELOPMENT Volume 22, Number 4, 2013 3.562
Somatic cells regulate maternal mRNA translation and
developmental competence of mouse oocytes
Spatial and temporal distribution of Oct-4 and acetylated H4K5 in rabbit embryos Chien-Hong Chen 台灣 Reproductive BioMedicine Online (2012) 24, 433– 442 3.249
The beneficial effects of cumulus cells and oocyte-cumulus cell gap junctions depends on oocyte maturation and fertilization methods in mice Cheng-Jie Zhou 中國  Peer J. 2016;4:e1761. 2.177
The uterine environment modulates trophectodermal POU5F1 levels in equine blastocysts Y. H. Choi 美國 Reproduction (2009) 138 589–599 3.100
無卵丘水牛卵母細胞體外成熟方法的初步探討 冯貴雪 中國 畜牧獸醫學報 2007, 38(6):614~619 0.593



In just short four years in USA, then published a study that shocked to all the medical community,

Dr. Chang is the physician you are looking for certainly.