Search Results 1-20 of 71

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  • Development of a bovine sperm selection procedure for improvement of livestock fertility

    NAGATA Maria-Portia B. , YAMASHITA Kenichi

    家畜の繁殖性改善は、畜産業の生産性向上による食糧供給の安定化とともに、地方の産業振興やバイオエコノミーとしての位置づけなど、幅広い意義を持つ。我々は、牛の繁殖性改善のため、手薄とされる精子側の研究に取り組んだ。研究開発の方向性は、ヒトの不妊治療にかかる報告を参考にして、健全性の高い精子は、運動性も高いという点に着目し、運動している精子を周囲の溶液に流れを生じさせて集合させるという技術を開発すること …

    Synthesiology English edition 12(2), 75-84, 2021

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  • Effects of human chorionic gonadotropin and intravaginal progesterone device treatment after artificial inseminations on the reproductive performance of normal and repeat breeder lactating dairy cows

    IZUMI Taiki , MIURA Ryotaro , SOBU Natsumi , HIRASE Akiya , YONEYAMA Osamu , MIYAKE Yoh-ichi , HANEDA Shingo , MATSUI Motozumi

    … We examined the effects of human chorionic gonadotropin (hCG) treatment on Day 5 (Day 0 = day of artificial insemination: AI) and intravaginal progesterone device (IVPD) treatment from Day 5 to 19 on the conception and detection rates of return to estrus (re-estrus) in lactating dairy cows. … A total of 306 cows from a commercial dairy farm were divided into the following three groups on Day 5: non-treatment group (n = 128), untreated; …

    Journal of Reproduction and Development 66(6), 523-528, 2020

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  • Development of a bovine sperm selection procedure for improvement of livestock fertility  [in Japanese]

    NAGATA MariaPortia B. , YAMASHITA Kenichi

    家畜の繁殖性改善は、畜産業の生産性向上による食糧供給の安定化とともに、地方の産業振興やバイオエコノミーとしての位置づけなど、幅広い意義を持つ。我々は、牛の繁殖性改善のため、手薄とされる精子側の研究に取り組んだ。研究開発の方向性は、ヒトの不妊治療にかかる報告を参考にして、健全性の高い精子は、運動性も高いという点に着目し、運動している精子を周囲の溶液に流れを生じさせて集合させるという技術を開発すること …

    Synthesiology 12(2), 75-83, 2019

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  • Cell signaling protein expression in ovary and uterus during preimplantation stage of the sows  [in Japanese]

    SA Soo-Jin , CHUNG Hak-Jae , BAEK Sun-Young , PARK Jun-Chel , HONG Jun-Gi , CHO Eun-Seuk , KIM Young-Shin , CHO Kyu-Ho , CHOI In-Chul , KIM Bong-Ki

    … <p>Synchronization of the estrus of sow using altrenogest treatment has been known to increase ovulation and strong estrus. … The purpose of this study was to investigate the effect if estrus synchronization to altrenogest regumate, PMSG/hCG and artificial insemination (AI) on galectin-3 and FGF-9 genes and protein expression. … Gelactin-3 and FGF-9 were affected by regumate/PMSG/hCG treatment in the both pre-embryonic development stages (P < …

    The Journal of Reproduction and Development Supplement 112(0), P-59-P-59, 2019

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  • Florivory indirectly decreases the plant reproductive output through changes in pollinator attraction

    Tsuji Kaoru , Ohgushi Takayuki

    … We examined whether artificial florivory decreased fruit and seed production, and also whether flower size affected florivory and the number of floral visitors. … The petal removal treatment (i.e., artificial florivory) showed approximately 50% reduction in both fruit and seed set in natural pollination but not in artificial pollination. …

    Ecology and Evolution 8(5), 2993-3001, 2018-03-05

    IR 

  • Reproductive performance in dairy cows with cystic ovarian disease after single treatment with buserelin acetate or dinoprost

    BORȘ Silviu Ionut , IBĂNESCU Iulian , CREANGĂ Șteofil , BORȘ Alina

    … <p>The treatment of cystic ovarian disease (COD) in dairy cows is still controversial, and some researchers recommend using gonadotropin-releasing hormone (GnRH) regardless of the type of cysts. … The aim of this study was to comparatively evaluate the reproductive performance of cows diagnosed with follicular or luteal cystic structures, after treatment with either buserelin acetate (GnRH agonist) or dinoprost (prostaglandin F2-alpha or PGF<sub>2α</sub>). …

    Journal of Veterinary Medical Science 80(7), 1190-1194, 2018

    J-STAGE  Ichushi Web 

  • Prevalence and risk factors of clinical endometritis diagnosed by vaginoscopy in dairy herds  [in Japanese]

    Okawa H. , Fujikura A.

    <p> 子宮内膜炎は分娩後に認められる重要な繁殖障害である.繁殖成績向上に寄与するために,乳用牛群における腟検査による腟粘液スコア(VMS)のグレード分類に基づき診断した臨床性子宮内膜炎発生の実態把握および,その発生に影響する危険因子の解明を目的として疫学調査を実施した.VMSは以下の4分類[0:粘液を認めないまたは透明粘液,1:やや灰色がかった,または透明粘液に白色小片を含む,2:5 …

    Japanese Journal of Large Animal Clinics 7(Supple), 225-230, 2017

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  • The examination of the maternal back ground factor of pregnant women by infertility treatment who wish NIPT  [in Japanese]

    SAKAMOTO Miwa , SHIRATO Nahoko , MIYAGAMI Keiko , HIROSE Tatsuko , IZUMI Mikiko , SEKIZAWA Akihiko

    <p>生殖補助医療(ART)患者は近年増加傾向にあり,妊娠後も出生前検査の多様化に伴い選択肢も増え,妊婦の心身的ストレスは続く.今回我々は無侵襲的母体血性胎児染色体検査(NIPT)の遺伝カウンセリングを行った妊婦に対し,不妊治療歴があることによるストレス因子,不安,うつの影響について検討した.当院で平成26年6月から9カ月間にNIPTを施行した529名のうち,ARTを実施した121名の …

    Journal of Japanese Society of Psychosomatic Obstetrics and Gynecology 22(3), 266-270, 2017

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  • Study of 118 pregnant women over 43 years old after infertility treatment  [in Japanese]

    HAMADA Hironori , NAKAYAMA Takahiro , DAHAL Sachiko , TACHIIRI Chieko , YAMADE Ichiro , INOUE Takuya , YANO Juri , HATAYAMA Hiroshi

    <p>【目的】平成28年度より不妊治療に対する特定治療支援事業では43歳以上の患者が対象外となった.その一方,43歳以上で不妊治療により妊娠・出産に至る例を少なからず経験するところであり,43歳以上に対する治療について検討することは喫緊の課題といえる.今回,その一助とすべく当院での不妊治療による43歳以上の妊娠症例を解析,検討した.【方法】2011年から2013年に当院で不妊治療を行い …

    ADVANCES IN OBSTETRICS AND GYNECOLOGY 69(3), 262-268, 2017

    J-STAGE  Ichushi Web 

  • Effect of diagnosis and treatment of clinical endometritis based on vaginal discharge score grading system in postpartum Holstein cows

    OKAWA Hiroaki , FUJIKURA Atsushi , WIJAYAGUNAWARDANE Missaka M.P. , VOS Peter L.A.M. , TANIGUCHI Masayasu , TAKAGI Mitsuhiro

    … <p>In this study, the prevalence, effectiveness of diagnosis, and treatment based on vaginal discharge score (VDS) of clinical endometritis in cattle were evaluated. … mild endometritis, no treatment (VDS=1; … The NTR group required significantly more artificial inseminations per pregnancy than NEM and TEM groups (2.8 ± 1.8 vs 2.0 ± 1.3, 1.9 ± 0.8, <i>P</i><0.05). …

    Journal of Veterinary Medical Science 79(9), 1545-1551, 2017

    J-STAGE  Ichushi Web 

  • Male Infertility and the Protection of Motherhood::For whom was artificial insemination by donor practiced ?

    Yui Hideki

        人文・社会科学分野では、男性と不妊をめぐる問題はほとんど議論されてこなかった。本稿では、戦中期から戦後初期にかけての産婦人科医の言説を、母性保護概念と不妊医療、とりわけ非配偶者間人工授精に着目して分析し、このような状況が形成された背景を検証した。そして、家族研究における生殖補助医療技術をめぐる議論を進展させるための素材を提示しようと試みた。 < …

    Annals of Family Studies 40(0), 7-23, 2015

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  • GnRH analogue treatment on LH surge day 0 followed by single transvaginal artificial insemination with frozen semen on day 5 in bitches

    OHTAKI Tadatoshi , KOGA Yasuna , ONO Mamiko , WATANABE Gen , TAYA Kazuyoshi , TSUMAGARI Shigehisa

    Reproductive parameters were evaluated in 19 and 14 estrous beagles that received 100 <i>µ</i>g of gonadotropin-releasing hormone (GnRH) and saline treatment, respectively, on the day of luteinizing hormone (LH) surge (Day 0; … estimated by serial progesterone assay) and balloon catheter-aided single transvaginal artificial insemination of frozen semen on Day 5. …

    Journal of Veterinary Medical Science 77(1), 123-126, 2015

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  • Anthelmintic effect of avermectin derivatives and its influence on productivity of Japanese Black and Holstein young cattle reared in Tohoku region in Japan  [in Japanese]

    Takahashi F.

    宮城県では,全国各地から気高系黒毛和種繁殖素牛の導入が推奨された.これは肥育素牛の産肉能力の向上をもたらした反面,乳頭糞線虫(SPL)のような消化管内線虫(GIN)の侵入に伴う病害も増加させた.また野外放牧場のホルスタイン種育成乳牛でもピロプラズマ対策とは対照的にGINへの対策はほとんど実施されておらず,増体や繁殖成績不振の要因と推察された.そこで,アベルメクチン系薬剤投与による駆虫効果および生産 …

    Japanese Journal of Large Animal Clinics 5(2), 65-75, 2014

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  • Fixed-Time Artificial Insemination Protocol after Treatment for Synchronization of Ovulation with a Combination of Prostaglandin F<sub>2α </sub>and Gonadotropins in Pigs  [in Japanese]

    NAKATA Tomoko , TAJIMA Yoko , NOGUCHI Michiko , UENOYAMA Yoshihisa , OHKURA Satoshi , MAEDA Kei-Ichiro , SUZUKI Chie , YOSHIOKA Koji

    プロスタグランジンF<sub>2α</sub>(PGF<sub>2α</sub>),馬絨毛性性腺刺激ホルモン及びヒト絨毛性性腺刺激ホルモン(hCG)投与による排卵同期化法を用いた豚の定時人工授精(AI)技術の確立を目的とし,排卵同期化処置を施した豚の生殖内分泌動態,排卵時期及びAI適期を検討した.排卵後12日から排卵同期化処置を施した豚の血中プロジェ …

    Journal of the Japan Veterinary Medical Association 67(2), 119-124, 2014

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  • Effects of Continuous Lighting and Time of Initiation of Treatments on the Flowering Time and Growth of Everbearing Strawberry Nursery Plants in a Closed Plant Factory  [in Japanese]

    YOSHIDA Hideo , HIKOSAKA Shoko , GOTO Eiji , TAKASUNA Hiroyuki , KUDO Tadashi

    本試験では, 人工光型植物工場を用いたイチゴの栽培における初期コストの削減および栽培期間の短縮(ランニングコストの削減)を目的として, 連続明期およびその開始時期が四季成り性イチゴ苗(<i>Fragaria×ananassa Duch.</i> 'HS138')の花成および生育に及ぼす影響について調査した. 処理光源には, 花成促進効果が報告されている青色光を多く含む青色蛍 …

    Shokubutsu Kankyo Kogaku 25(2), 77-82, 2013-06-01

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  • PERSONAL OVERVIEW OF THE APPLICATION OF LLLT IN SEVERELY INFERTILE JAPANESE FEMALES

    Ohshiro Toshio

    … The present article will show how the application of low level laser therapy (LLLT) is a potentially effective treatment for severe infertility.<br><b>Subjects and Methods:</b> … Seventy-four females (average age 39.28 yr) with severe infertility in whom assisted reproductive technology (ART) had been unsuccessful (average of 9.13 yr) participated in the first part of a study from October 1996 . …

    LASER THERAPY 21(2), 97-103, 2012

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  • Embryonic Stem Cells: A Novel Attractive Research Tool for Germ Cell Development

    Fukunaga Naoto , Teramura Takeshi , Hosoi Yoshihiko

    … Despite recent astonishing advances in the treatment of infertility by assisted reproductive technology (ART), the fundamental approaches to solving complete infertility due to congenital absence of germ cells or impaired fertility arising from gonadotoxic therapies during prepubertal childhood still remain unclear. …

    Journal of Mammalian Ova Research 29(1), 11-16, 2012

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  • Developing the nursing intervention program for pregnant women after the artificial reproductive treatment to promote maternal role attainment  [in Japanese]

    森 恵美 , 坂上 明子 , 前原 邦江 [他]

    Journal of Japan Maternity Nursing 11(1), 19-26, 2011-03

    Ichushi Web 

  • Varicocele and Its Treatment for Male Infertility

    Ishizaka Kazuhiro , Nagabuchi Tomio , Ohya Kazuhiro , Sekine Hideaki

    精索静脈瘤は男性不妊症の原因で最も頻度の高い精子形成障害のうち30%を占め,手術治療が標準治療として行われてきた.コントロールスタディやメタアナリシスでは精索静脈瘤手術後の精液所見や妊娠率の改善は必ずしも明らかにされていないので,適応は個々の症例ごとに検討すべきである.手術治療は補助生殖技術より経済的に優れており,特に大きな精索静脈瘤のある若年不妊症男性には自然妊娠のために有用であると考えられる. …

    Journal of Mammalian Ova Research 28(4), 198-202, 2011

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  • Temporal and Spatial Regulation of Let-7a in the Uterus During Embryo Implantation in the Rat

    XIA Hong-Fei , JIN Xiao-Hua , SONG Pei-Pei , CUI Yi , LIU Chun-Mei , MA Xu

    … in the uterus during early pregnancy, pseudopregnancy, artificial decidualization and activation of delayed implantation was detected by Northern blotting and <i>in situ</i> … was not significantly different in the pseudopregnant uterus and increased significantly in the uteri of rats subjected to artificial decidualization and activation of delayed implantation. … Treatment with estradiol-17<i>β</i> …

    Journal of Reproduction and Development 56(1), 73-78, 2010

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