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Regulatory mechanisms of seminal proteins on uterine function and its application to improvement of fertility in cows

Research Project

Project/Area Number 19H00964
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 42:Veterinary medical science, animal science, and related fields
Research InstitutionHokkaido University

Principal Investigator

Katagiri Seiji  北海道大学, 獣医学研究院, 教授 (00292061)

Co-Investigator(Kenkyū-buntansha) 柳川 洋二郎  北海道大学, 獣医学研究院, 准教授 (20609656)
杉浦 智親  酪農学園大学, 獣医学群, 助教 (40828258)
奥山 みなみ  大分大学, 医学部, 助教 (50756781)
平山 博樹  東京農業大学, 生物産業学部, 教授 (60390861)
永野 昌志  北里大学, 獣医学部, 教授 (70312402)
田上 貴祥  北海道大学, 農学研究院, 助教 (70709849)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥44,850,000 (Direct Cost: ¥34,500,000、Indirect Cost: ¥10,350,000)
Fiscal Year 2022: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2020: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2019: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
Keywords低受胎 / 乳牛 / 子宮 / 上皮成長因子 / Toll様受容体 / レプチン受容体 / 不妊症 / 低受胎牛 / オステオポンチン / 精漿 / TLR / 不妊 / 病態解析 / 治療 / 牛 / 病態 / リンパ球 / サイトカイン / リピートブリーダー牛 / リピートブリーディング
Outline of Research at the Start

現在の乳牛は、泌乳能力の向上の代償としてその多くが「病気ではないが健康とはいえない状態」にあり、妊娠しにくい牛となっている。研究代表者は、その原因を調べる中で一見正常で臨床検査により不妊の原因を特定できない不妊牛(乳牛全体の約5%)において子宮での上皮成長因子(EGF)発現に異常がみられることを明らかにし、次いで精漿中の蛋白がこの異常を解消することを報告した。本研究では、この治療処置をさらに一歩進めるために、精漿蛋白が子宮でのEGF発現を正常化する機序を解明する。最終的には、本技術を人工授精技術と組み合わせることで受胎性の低下した乳牛の繁殖成績改善に大きく貢献する技術に発展させる

Outline of Final Research Achievements

We investigated the role of the endocrine and immune systems in abnormal EGF concentration in the uterus of dairy cows. First, we investigated the effects of IGF-I and leptin, which link reproductive function and nutritional status, and found that there was no difference in blood concentrations of either of them between abnormal and normal cows. However, the expression of leptin receptors was found to be increased in abnormal cows, and it was also found to be associated with resistance to treatment. Next, when we compared the expression of cytokines in the blood and uterus before and after treatment, we found that there was a transient increase in the expression of inflammatory cytokines after treatment, but no relationship was seen with treatment outcomes. However, it was suggested that increased expression of TolI-like receptors, which are associated with innate immunity, is associated with resistance to treatment.

Academic Significance and Societal Importance of the Research Achievements

子宮でのEGF濃度異常と免疫系、とくにToll様受容体を介した自然免疫系の関連が示されたことにより、従来から試みられてきた内分泌系を標的とした治療法に加えて、Toll様受容体を標的とする新たな予防及び治療法の開発に道が拓けた。低受胎牛の問題は、学術的にはその対策に手詰まり感が感じられていた問題であり、この発見は関連する栄養学、管理学及び臨床獣医学の各分野での研究の活性化につながることが期待される。

Report

(6 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Comments on the Screening Results   Annual Research Report
  • Research Products

    (54 results)

All 2023 2022 2021 2020 2019

All Journal Article (21 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 21 results,  Open Access: 16 results) Presentation (33 results) (of which Int'l Joint Research: 7 results,  Invited: 6 results)

  • [Journal Article] Effects of the presence of a large follicle and a corpus luteum in bovine ovaries on nuclear maturation of oocytes and steroidogenesis of granulosa cells cultured as oocyte-cumulus-granulosa complexes derived from early antral follicles2022

    • Author(s)
      Sakaguchi K, Kawano K, Yanagawa Y, Katagiri S, Nagano M
    • Journal Title

      Japanese Journal of Veterinary Research

      Volume: 70 Issue: 2 Pages: 45-56

    • DOI

      10.14943/jjvr.70.2.45

    • ISSN
      0047-1917
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship between frame rates and subpopulation structure of bovine sperm divided by their motility analyzed by a computer‐assisted sperm analysis system2022

    • Author(s)
      Kanno Chihiro、Sun‐Sik Kang、Sakamoto Kentaro Q.、Yanagawa Yojiro、Katagiri Seiji、Nagano Masashi
    • Journal Title

      Animal Science Journal

      Volume: 93 Issue: 1

    • DOI

      10.1111/asj.13796

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of heat exposure on the growth and developmental competence of bovine oocytes derived from early antral follicles2022

    • Author(s)
      12.Kawano K, Sakaguchi K, Madalitso C, Ninpetch N, Kobayashi S, Furukawa E, Yanagawa Y, Katagiri S
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 8857-8857

    • DOI

      10.1038/s41598-022-12785-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relationship between the timing of insemination based on estrus detected by the automatic activity monitoring system and conception rates using sex-sorted semen in Holstein dairy cattle2022

    • Author(s)
      FURUKAWA Eri、KANNO Chihiro、YANAGAWA Yojiro、KATAGIRI Seiji、NAGANO Masashi
    • Journal Title

      Journal of Reproduction and Development

      Volume: 68 Issue: 4 Pages: 295-298

    • DOI

      10.1262/jrd.2022-006

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of heat stress on the endometrial epidermal growth factor profile and fertility in dairy cows2022

    • Author(s)
      Kawano K, Yanagawa Y, Nagano M, Katagiri S
    • Journal Title

      Journal of Reproduction and Development

      Volume: 68 Issue: 2 Pages: 144-151

    • DOI

      10.1262/jrd.2021-120

    • NAID

      130008145317

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Leptin receptor expression and its change in association with the normalization of EGF profile after seminal plasma treatment in repeat breeder dairy cows2022

    • Author(s)
      Ninpetch N, Badrakh D, HAY MAR KYAW, Kawano K, Yanagawa Y, Nagano M, Katagiri S
    • Journal Title

      Journal of Reproduction and Development

      Volume: 68 Issue: 3 Pages: 209-215

    • DOI

      10.1262/jrd.2021-142

    • NAID

      130008164759

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of milk osteopontin on the endometrial epidermal growth factor profile and restoration of fertility in repeat breeder dairy cows2022

    • Author(s)
      Hay Mar Kyaw, Sato H, Tagami T, Yanagawa Y, Nagano M, Katagiri S
    • Journal Title

      Theriogenology

      Volume: 184 Pages: 26-33

    • DOI

      10.1016/j.theriogenology.2022.02.008

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Plasma profile of follicle‐stimulating hormone and sex steroid hormones after a single epidural administration of follicle‐stimulating hormone via caudal vertebrae in Holstein dry cows2022

    • Author(s)
      Sakaguchi Kenichiro、Suda Tomoko、Ninpetch Nattapong、Kawano Kohei、Yanagawa Yojiro、Katagiri Seiji、Yoshioka Koji、Nagano Masashi
    • Journal Title

      Animal Science Journal

      Volume: 93 Issue: 1

    • DOI

      10.1111/asj.13696

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Low oxygen environment and astaxanthin supplementation promote the developmental competence of bovine oocytes derived from early antral follicles during 8 days of in?vitro growth in a gas-permeable culture device2022

    • Author(s)
      Chelenga Madalitso、Sakaguchi Kenichiro、Kawano Kohei、Furukawa Eri、Yanagawa Yojiro、Katagiri Seiji、Nagano Masashi
    • Journal Title

      Theriogenology

      Volume: 177 Pages: 116-126

    • DOI

      10.1016/j.theriogenology.2021.10.014

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Postpartum cows showed high oocyte triacylglycerols concurrently with high plasma free fatty acids2021

    • Author(s)
      Furukawa Eri、Chen Zhen、Ueshiba Hiroki、Wu Yue、Chiba Hitoshi、Yanagawa Yojiro、Katagiri Seiji、Nagano Masashi、Hui Shu-Ping
    • Journal Title

      Theriogenology

      Volume: 176 Pages: 174-182

    • DOI

      10.1016/j.theriogenology.2021.09.034

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of bovine seminal plasma proteins with an activity to normalize endometrial epidermal growth factor concentrations in repeat breeder cows2020

    • Author(s)
      1.Badrakh D, Shirasawa A, Yanagawa Y, Nagano M, Katagiri S
    • Journal Title

      Japanese Journal of Veterinary Research

      Volume: 68 Issue: 2 Pages: 91-103

    • DOI

      10.14943/jjvr.68.2.91

    • NAID

      120006863179

    • ISSN
      0047-1917
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of seminal plasma infusion into the vagina on the normalization of endometrial epidermal growth factor concentrations and fertility in repeat breeder dairy cows2020

    • Author(s)
      BADRAKH Dagvajamts、YANAGAWA Yojiro、NAGANO Masashi、KATAGIRI Seiji
    • Journal Title

      Journal of Reproduction and Development

      Volume: 66 Issue: 2 Pages: 149-154

    • DOI

      10.1262/jrd.2019-148

    • NAID

      130007830042

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Theca cells can support bovine oocyte growth in?vitro without the addition of steroid hormones2020

    • Author(s)
      Yang Yinghua、Kanno Chihiro、Sakaguchi Kenichiro、Katagiri Seiji、Yanagawa Yojiro、Nagano Masashi
    • Journal Title

      Theriogenology

      Volume: 142 Pages: 41-47

    • DOI

      10.1016/j.theriogenology.2019.09.037

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Monitoring follicular dynamics to determine estrus type and timing of ovulation induction in captive brown bears (<i>Ursus arctos</i>)2020

    • Author(s)
      Torii Y, Matsumoto N, Sakamoto H, Nagano M, Katagiri S, Yanagawa Y
    • Journal Title

      Journal of Reproduction and Development

      Volume: 66 Issue: 6 Pages: 563-570

    • DOI

      10.1262/jrd.2020-044

    • NAID

      130007958761

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of increased oxygen availability and astaxanthin supplementation on the growth, maturation and developmental competence of bovine oocytes derived from early antral follicles2020

    • Author(s)
      Chelenga Madalitso、Sakaguchi Kenichiro、Abdel-Ghani Mohammed A.、Yanagawa Yojiro、Katagiri Seiji、Nagano Masashi
    • Journal Title

      Theriogenology

      Volume: 157 Pages: 341-349

    • DOI

      10.1016/j.theriogenology.2020.07.023

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Identification of bovine seminal plasma proteins with an activity to normalize endometrial epidermal growth factor concentrations in repeat breeder cows2020

    • Author(s)
      Badrakh D, Shirasawa A, Yanagawa Y, Nagano M, Katagiri S
    • Journal Title

      Jpn J Vet Res

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of seminal plasma infusion into the vagina on the normalization of the endometrial epidermal growth factor concentrations and fertility in repeat breeder dairy cows2020

    • Author(s)
      Badrakh D, Yanagawa Y, Nagano M, Katagiri S
    • Journal Title

      J Reprod Dev

      Volume: 66 Pages: 149-154

    • NAID

      130007830042

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Theca cells can support bovine oocyte growth in vitro without the addition of steroid hormones2020

    • Author(s)
      Yang Y, Kanno C, Sakaguchi K, Katagiri S, Yanagawa Y, Nagano M
    • Journal Title

      Theriogenology

      Volume: 142 Pages: 41-47

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Relationships between the antral follicle count, steroidogenesis, and secretion of follicle-stimulating hormone and anti-Mullerian hormone during follicular growth in cattle2019

    • Author(s)
      Sakaguchi K, Yanagawa Y, Yoshioka K, Suda T, Katagiri S, Nagano M
    • Journal Title

      Reprod Biol Endocrinol

      Volume: 17

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of follicle-stimulating hormone followed by gonadotropin-releasing hormone on embryo production by ovum pick-up and in vitro fertilization in the river buffalo (Bubalus bubalis)2019

    • Author(s)
      Sakaguchi K, Maylem ERS, Tilwani RC, Yanagawa Y, Katagiri S, Atabay EC, Atabay EP, Nagano M
    • Journal Title

      Anim Sci J

      Volume: 90 Pages: 690-695

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Astaxanthin improves the developmental competence of in vitro-grown oocytes and modifies the steroidogenesis of granulosa cells derived from bovine early antral follicles2019

    • Author(s)
      Abdel-ghani MA, Yanagawa Y, Balboula AZ, Katagiri S, Nagano M
    • Journal Title

      Reprod Fertil Dev

      Volume: 31 Pages: 272-281

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Effects of high temperature in physiological range on amino acid metabolism of in vitro growing oocyte-cumulus-granulosa complexes derived from bovine early antral follicles2023

    • Author(s)
      Kawano K, Sakaguchi K, Ninpetch N, Yanagawa Y, Katagiri S
    • Organizer
      The 49th Annual Conference of the International Embryo Technology Society
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of cysteine on growth, developmental competence, and reduced glutathione levels of in vitro growth of oocytes under heat stress2022

    • Author(s)
      Kawano K, Sakaguchi K, Ninpetch N, Furukawa E, Chelenga M, Yanagawa Y, Katagiri S
    • Organizer
      The 10th Sapporo Summer Seminar for One Health
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Exploring the utilisation of amino acids and their metabolites as predictors of follicle activation and growth during culture2022

    • Author(s)
      Sakaguchi K, Otani Y, Kawano K, Yanagawa Y, Katagiri S, Telfer EE
    • Organizer
      Fertility
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 暑熱ストレスが牛の初期胞状卵胞に由来する卵子-卵丘-顆粒層細胞複合体の酸化ストレスおよび抗酸化関連遺伝子の発現に及ぼす影響2022

    • Author(s)
      河野光平、坂口謙一郎、Nattapong Ninpetch、古川 瑛理、栁川洋二郎、片桐成二
    • Organizer
      第115回 日本繁殖生物学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Low progesterone during the growth period of ovulatory follicle reduces the endometrial epidermal growth factor concentration in dairy cows2022

    • Author(s)
      Phong VT, Kawano K, Yanagawa Y, Katagiri S
    • Organizer
      第115回 日本繁殖生物学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] The effect of integrin binding domain peptide and C-terminal fragment of osteopontin on restoring the endometrial EGF abnormality in repeat breeder dairy cows2022

    • Author(s)
      Tanida T, Tagami T, Yanagawa Y, Katagiri S
    • Organizer
      31th World Buiatrics Congress, Madrid, Spain
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ホルスタイン種泌乳牛における受胚牛の受胎性予測指標としての胚移植日 の黄体血流量評価の有用性2022

    • Author(s)
      谷田孝志、向野逸郎、中橋美貴子、宮野大輝、宮澤胡桃、栁川洋二郎、片桐成二
    • Organizer
      第165回日本獣医学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 授精時期の牛腟深部におけるオステオポンチン受容体遺伝子の発現2022

    • Author(s)
      谷田孝志、小川理智、河野光平、國井宏樹、栁川洋二郎、片桐成二
    • Organizer
      第115回日本繁殖 生物学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 乳牛の血漿遊離脂肪酸濃度上昇に伴う卵子エネルギー代謝関連脂質プロファイルの変化2022

    • Author(s)
      古川瑛理、陳震、窪友瑛、Chelenga Madalitso、Wu Yue、千葉仁志、栁川洋二郎、片桐成二、惠淑萍、永野昌志
    • Organizer
      第64回北海道生殖医学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Effects of days in milk and body condition score loss after parturition on oocyte triacylglycerol content in Holstein cows,2022

    • Author(s)
      Eri Furukawa, Zhen Chen, Tomoaki Kubo, Madalitso Chelenga, Yue Wu, Hitoshi Chiba, Yojiro Yanagawa, Seiji Katagiri, Shu-Ping Hui, Masashi Nagano
    • Organizer
      International Embryo Technology Society 48th Annual Conference
    • Related Report
      2021 Annual Research Report
  • [Presentation] Purification efficacy and effect of bovine milk osteopontin on the endometrial epidermal growth factor profile in repeat breeder dairy cows2021

    • Author(s)
      Hay Mar Kyaw, Takayoshi Tagami, Yojiro Yanagawa, Seiji Katagiri
    • Organizer
      第114回日本繁殖生物学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 組換えオステオポンチンによる子宮内膜EGF濃度の正常化が14日目胚の生存性 と発育に及ぼす効果2021

    • Author(s)
      谷田孝志, 佐藤弘子, Hay Mar Kyaw, 栁川洋二郎, 田上貴祥, 片桐成二
    • Organizer
      第114回日本繁殖生物学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 暑熱負荷が牛の初期胞状卵胞に由来する卵子中の活性酸素種および還元型グルタチオン量に及ぼす影響2021

    • Author(s)
      河野光平, 坂口謙一郎, Chelenga Madalitso, 古川瑛理,Nattapong Ninpetch, 栁川洋二郎, 片桐成二
    • Organizer
      第114回日本繁殖生物学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 第二胃内留置型自動体温測定器で測定したホルスタイン種経産牛の分娩前1週間の体温変化と分娩時間帯の関係2021

    • Author(s)
      古川瑛理、陳震、窪友瑛、Chelenga Madalitso、Wu Y、千葉仁志、栁川洋二郎、片桐成二、惠淑萍、永野昌志
    • Organizer
      日本畜産学会第129回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Relationship between lactation stages and phosphatidylcholine content of oocytes in Holstein dairy cows2021

    • Author(s)
      Eri Furukawa, Zhen Chen, Tomoaki Kubo, Madalitso Chelenga, Yue Wu, Hitoshi Chiba, Yojiro Yanagawa, Masashi Nagano, Shu-Ping Hui, Seiji Katagiri
    • Organizer
      9th Sapporo Summer Symposium for One Health
    • Related Report
      2021 Annual Research Report
  • [Presentation] Risk factors for altered endometrial epidermal growth factor (EGF) recovery and subsequent fertility in dairy cows2021

    • Author(s)
      Ninpetch N, Badrakh D, HAY MAR KYAW, Kawano K, Yanagawa Y, Katagiri S
    • Organizer
      9th Sapporo Summer Symposium for One Health
    • Related Report
      2021 Annual Research Report
  • [Presentation] The effects of heat exposure on the growth and developmental competence of oocytes derived from early antral follicles in dairy cows (Peter Farin Trainee Award受賞)2021

    • Author(s)
      Kawano K, Sakaguchi K, Furukawa E, Chelenga M, Yanagawa Y, Katagiri S
    • Organizer
      The 46th Annual conference of International embryo technology society, New York, January 18-21, 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 牛の暑熱ストレスと繁殖~シンポジウム開催にあたって2020

    • Author(s)
      片桐成二
    • Organizer
      獣医繁殖分科会シンポジウム、第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 暑熱ストレスによる子宮機能異常を介した受胎性低下の機序2020

    • Author(s)
      栁川洋二郎,河野光平、坂口謙一郎、片桐成二
    • Organizer
      獣医繁殖分科会シンポジウム、第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 組換えオステオポンチンによるリピートブリーダー牛の子宮内膜上皮成長因子(EGF)濃度正常化と受胎性回復効果の検証2020

    • Author(s)
      佐藤 弘子、Hay Mar Kyaw、栁川 洋二郎、永野 昌志、田上 貴祥、片桐 成二
    • Organizer
      第61回日本卵子学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 乳汁中プロジェステロン濃度測定による発情回帰牛の摘発2020

    • Author(s)
      古川 瑛理、安田 奈絵、山田 淑子、石田 晃彦、渡慶次 学、渡邊 龍之介、篠原 禎忠、松田 憲司、野内 繁広、片桐 成二、柳川 洋二郎
    • Organizer
      第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 卵巣内の主席卵胞と黄体の存在が初期胞状卵胞由来卵子の核成熟能と顆粒層細胞の性ステロイドホルモン産生能に及ぼす影響2020

    • Author(s)
      坂口 謙一郎、河野 光平、柳川 洋二郎、片桐 成二、永野 昌志
    • Organizer
      第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 精漿が豚の末梢血単核球中のサイトカイン発現および制御性T細胞に与える影響2020

    • Author(s)
      阪井 紀乃、奥山 みなみ、對馬 隆介、南家 夕子、篠原 明、古川 瑛理、河野 光平、柳川 洋二郎、楢原 久司、片桐 成二
    • Organizer
      第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 暑熱が乳牛の初期胞状卵胞に由来する卵子の発育、成熟および顆粒層細胞の性ステロイドホルモン産生能に及ぼす影響2020

    • Author(s)
      河野 光平、坂口 謙一郎、古川 瑛理、Madalitso Chelenga、柳川 洋二郎、片桐 成二
    • Organizer
      第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Astaxanthin supplementation during IVG culture under different oxygen tensions promotes developmental competence of bovine oocytes derived from early antral follicles2020

    • Author(s)
      Madalitso Chelenga、坂口 謙一郎、古川 瑛理、柳川 洋二郎、片桐 成二、永野 昌志
    • Organizer
      第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 精漿蛋白による子宮機能調節とその低受胎対策への応用2019

    • Author(s)
      片桐成二
    • Organizer
      第112回日本繁殖生物学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Repeat breeding: the cause and the possible treeatment to restore fertility2019

    • Author(s)
      Katagiri S
    • Organizer
      The 17th International Conference on Production Diseases in Farm Animals
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Repeat breeding caused by uterine dysfunction and its treatment2019

    • Author(s)
      Katagiri S
    • Organizer
      The 24th Annual Meeting of Korean Association for Buiatrics
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Effects of antral follicle count in ovaries on follicular development and endocrine dynamics of FSH and steroid hormones in cattle2019

    • Author(s)
      Sakaguchi K, Yanagawa Y, Yoshioka K, Suda T, Kawano K, Katagiri S, Nagano M
    • Organizer
      45th Annual Conference of the IETS
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 組換えオステオポンチンによる牛子宮内膜上皮成長因子濃度の正常化効果の検証2019

    • Author(s)
      佐藤弘子, Hay Mar Kyaw, 栁川洋二郎, 永野昌志, 田上貴祥, 片桐成二
    • Organizer
      第112回日本繁殖生物学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 乳牛の子宮内膜組織血流量に影響を及ぼす因子の解析2019

    • Author(s)
      河野光平、栁川洋二郎、Nattapong Ninpetch、永野昌志、片桐成二
    • Organizer
      第162回日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 牛性選別精子の卵管上皮細胞結合能および受精能獲得のフローサイトメトリーによる解析2019

    • Author(s)
      中島愛理、菅野智裕、片桐成二、永野昌志、栁川洋二郎
    • Organizer
      第162回日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Identification of seminal plasma proteins to normalize endometrial epidermal growth factor concentrations in repeat breeder cows2019

    • Author(s)
      Badrakh Dagvajamts、柳川洋二郎、永野昌志、片桐成二
    • Organizer
      第162回日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2025-01-30  

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