SRD会員の皆様へ 平素からThe Journal of Reproduction and Development (JRD) の刊行にご協力を頂き有難うございます。Vol. 70 (2) が発刊となりました。ご一読いただき，また論文執筆の際にはご活用いただけますようお願いいたします。本号では過日にご逝去されました柳町隆造先生 (JRD Special Advisory Board) のObituary (Special thanks)「In memory of Dr. Ryuzo Yanagimachi (Yana) (1928–2023)」 を若山先生・小倉先生にご寄稿いただき，柳町先生が歩まれた偉大な足跡を紹介していただいています。会員の皆さん，特に若手研究者や学生さんに是非お読みいただけましたら幸いです。JRD編集委員長 原山 洋JRD Vol. 70 (2)https://www.jstage.jst.go.jp/browse/jrd/70/2/_contents/-char/en
Original Article
Identification and characterization of dystrophin-locus-derived testis-specific protein: A testis-specific gene within the intronic region of the rat dystrophin gene
Keitaro YAMANOUCHI, Shizuka KATO, Yukie TANAKA, Masanari IKEDA, Yukina OSHIMO, Takanori SHIGA, Kei HATAMOTO, James CHAMBERS, Takuya IMAMURA, Ryuji HIRAMATSU, Kazuyuki UCHIDA, Fuko MATSUDA, Takashi MATSUWAKI, Tetsuya KOHSAKA
Volume 70 Issue 2 Pages 55-64
DOI
https://doi.org/10.1262/jrd.2023-073
Effect of paternal aging and vitrification on mitochondrial DNA copy number and telomere length of mouse blastocysts
Nao ABURADA, Jun ITO, Yuki INOUE, Taiyo YAMAMOTO, Masamune HAYASHI, Noko TERAMOTO, Yuri OKADA, Yuichi KOSHIISHI, Koumei SHIRASUNA, Hisataka IWATA
Volume 70 Issue 2 Pages 65-71
DOI
https://doi.org/10.1262/jrd.2023-079
Lipid droplets synthesized during luteinization are degraded after pregnancy
Junichiro MITSUI, Megumi IBAYASHI, Ryutaro AIZAWA, Tomonori ISHIKAWA, Naoyuki MIYASAKA, Satoshi TSUKAMOTO
Volume 70 Issue 2 Pages 72-81
DOI
https://doi.org/10.1262/jrd.2023-095
Efficient derivation of embryonic stem cells and primordial germ cell-like cells in cattle
Atsushi SHIRASAWA, Masafumi HAYASHI, Mayumi SHONO, Atsushi IDETA, Takashi YOSHINO, Katsuhiko HAYASHI
Volume 70 Issue 2 Pages 82-95
DOI
https://doi.org/10.1262/jrd.2023-087
Cover Story:
The process of inducing the germ cell lineage from pluripotent stem cells, referred to as in vitro gametogenesis, aids in comprehending the mechanisms involved in germ cell differentiation and offers an alternative source of gametes for reproduction. Shirasawa et al. have developed a novel method for robust induction of primordial germ cell-like cells (PGCLCs) from newly established bovine embryonic stem (bES) cells (Shirasawa et al.: Efficient derivation of embryonic stem cells and primordial germ cell-like cells in cattle, pp. 82–95). After a 24-hour culture with bone morphogenetic protein 4 (BMP4), followed by a three-dimensional culture with BMP4 and chemicals modulating WNT signaling, bES cells exhibited positive expression for a set of primordial germ cell (PGC) markers, including PRDM1/BLIMP1, TFAP2C, and SOX17. These outcomes are anticipated to have practical implications for the development of stem cell-based reproductive technologies in cattle.
Progesterone and estradiol regulate sperm hyperactivation and in vitro fertilization success in mice
Miyu FUJIKURA, Masakatsu FUJINOKI
Volume 70 Issue 2 Pages 96-103
DOI
https://doi.org/10.1262/jrd.2023-080 Busulfan administration replicated the characteristics of the epididymal initial segment observed in mice lacking testis-epididymis lumicrine signaling
Daiji KIYOZUMI
Volume 70 Issue 2 Pages 104-114
DOI
https://doi.org/10.1262/jrd.2023-102
Parallel expression patterns of NR4A nuclear receptor family genes in the pituitary gland of proestrus rats
Ryota TERASHIMA, Daiki NAGAO, Masato IKEO, Keisuke MORIOKA, Titaree LAOHARATCHATATHANIN, Shiro KURUSU, Mitsumori KAWAMINAMI
Volume 70 Issue 2 Pages 115-122
DOI
https://doi.org/10.1262/jrd.2023-090
Time elapsed between ovulation and insemination determines the quality of fertilized rat oocytes
Naomi NAKAGATA, Satohiro NAKAO, Nobuyuki MIKODA, Katsuma YAMAGA, Toru TAKEO
Volume 70 Issue 2 Pages 123-130
DOI
https://doi.org/10.1262/jrd.2023-067
High-concentration bovine serum albumin enhances fertilization ability of cold-stored rat sperm
Katsuma YAMAGA, Satohiro NAKAO, Nobuyuki MIKODA, Jorge Mario SZTEIN, Naomi NAKAGATA, Toru TAKEO
Volume 70 Issue 2 Pages 131-137
DOI
https://doi.org/10.1262/jrd.2023-085
The fertility of dairy heifers and cows is not influenced by the follicular wave of the ovulatory follicle
Javad MOHAMMADI, Mehdi AZARI, Mojtaba KAFI
Volume 70 Issue 2 Pages 138-143
DOI
https://doi.org/10.1262/jrd.2023-084
Cover Story:
For the past century, achieving in vitro spermatogenesis has remained a difficult challenge for researchers. In 2011, Ogawa et al. successfully demonstrated in vitro spermatogenesis in mice using an organ culture method. However, extending this method to other species posed challenges for over a decade. In 2023,
Ogawa’s team achieved in vitro spermatogenesis in rats by incorporating several critical modifications to enhance their original technique. This review presents a detailed analysis by Ogawa et al. comparing their method with natural in vivo conditions and other synthetic alternatives (Ogawa et al. Improvements in in vitro spermatogenesis: oxygen concentration, antioxidants, tissue-form design, and space control, pp. 1–9). They systematically explore the merits, limitations, and inherent constraints of the organ culture approach, delving into the specifics of medium composition, the principles of the gas-liquid interphase method, use of microfluidic devices, and innovation of the PDMS-ceiling method. Highlighting the challenges faced, including regulating oxygen concentration, managing tissue formation, and regulating culture space-control. The insights and novel concepts shared in this review are particularly valuable for those involved in culture or related disciplines, providing innovative content, and encouraging further exploration in this field.
Original Article
PABPN1L is required for maternal mRNA degradation after meiosis resumption
Chihiro EMORI, Mayo KODANI, Ferheen ABBASI, Masashi MORI, Masahito IKAWA
Volume 70 Issue 1 Pages 10-17
DOI
https://doi.org/10.1262/jrd.2023-077 Lipid droplet formation is spatiotemporally regulated in oocytes during follicular development in mice
Ryutaro AIZAWA, Megumi IBAYASHI, Junichiro MITSUI, Satoshi TSUKAMOTO
Volume 70 Issue 1 Pages 18-24
DOI
https://doi.org/10.1262/jrd.2023-055
Development of a fluorometric Cuboni test for the semi-quantitative measurement of urinary estrogen levels and pregnancy detection in mares
Kaede ODA, Maya YOSHIDA, Abdul Razaq IRSHAD, Tomomi KANAZAWA, Toru TAKAHASHI
Volume 70 Issue 1 Pages 25-29
DOI
https://doi.org/10.1262/jrd.2023-083
Equine chorionic gonadotropin treatment and timed artificial insemination for dairy cow production under heat stress
Daisuke FUNAKOSHI, Hidetoshi SHIOTANI, Makoto SEKI
Volume 70 Issue 1 Pages 30-34
DOI
https://doi.org/10.1262/jrd.2023-069
Serum-free spontaneously immortalized bovine oviduct epithelial cell conditioned medium promotes the early development of bovine in vitro fertilized embryos
Norikazu MIYASHITA, Satoshi AKAGI, Tamas SOMFAI, Yuji HIRAO
Volume 70 Issue 1 Pages 42-48
DOI
https://doi.org/10.1262/jrd.2023-031
Technology Report
Capturing temperature changes on the ocular surface along with estrus and ovulation using infrared thermography in Japanese Black cows
Riho OZAKI, Seiji INOUE, Yuki YOROZUI, Rei ICHIKAWA, Naoki YAMADA, Seiya HIGASHI, Shuichi MATSUYAMA, Hiroko TSUKAMURA, Satoshi OHKURA, Yoshihisa UENOYAMA, Yasuhiro MORITA
Volume 70 Issue 1 Pages 49-54
DOI
https://doi.org/10.1262/jrd.2022-116
