JP5735918B2 - 妊娠促進のためのlpaの使用及び妊娠促進剤 - Google Patents
妊娠促進のためのlpaの使用及び妊娠促進剤 Download PDFInfo
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/66—Phosphorus compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
- A61P15/08—Drugs for genital or sexual disorders; Contraceptives for gonadal disorders or for enhancing fertility, e.g. inducers of ovulation or of spermatogenesis
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Description
1.胚盤胞移植における患者の妊娠を促進するための妊娠促進剤であって,リゾホスファチジン酸を含有してなるものである,妊娠促進剤。
2.該リゾホスファチジン酸が,LPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2からなる群から選択される1又は複数のものである,上記1の妊娠促進剤。
3.該リゾホスファチジン酸がLPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2である,上記1の妊娠促進剤。
4.LPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2の相互の含有割合が,モル比で36〜66:1〜2:5〜10:13〜25:15〜28である,上記3の妊娠促進剤。
5.1回の投与当たり,LPA-C16:0が98〜182 pmol,LPA-C16:1が2.8〜5.2 pmol,LPA-C18:0が14〜26 pmol,LPA-C18:1が36〜68 pmol及びLPA-C18:2が40〜76 pmolの量で該患者の子宮腔に注入されるものである,上記3の妊娠促進剤。
6.胚盤胞の移植に先立ち投与されるものである,上記1ないし5の何れかの妊娠促進剤。
7.哺乳動物の胚を培地中で培養するステップと,これにより得られる培養液の上清を採取するステップとを含んでなる,リゾホスファチジン酸の製造方法。
8.該リゾホスファチジン酸が,LPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2からなる群から選択される1又は複数のリゾホスファチジン酸である,上記7の製造方法。
9.該哺乳動物が,ヒトである上記7又は8の製造方法。
10.該培地が無血清培地である,上記7ないし9の何れかの製造方法。
11.胚盤胞移植において,有効量のリゾホスファチジン酸を患者の子宮腔に投与することを含んでなる,妊娠促進方法。
12・該リゾホスファチジン酸が,LPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2からなる群から選択される1又は複数のものである,上記11の方法。
13.該リゾホスファチジン酸がLPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2である,上記11の方法。
14.LPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2の相互の含有割合が,モル比で36〜66:1〜2:5〜10:13〜25:15〜28である,上記13の方法。
15.1回の投与当たり,LPA-C16:0が98〜182 pmol,LPA-C16:1が2.8〜5.2 pmol,LPA-C18:0が14〜26 pmol,LPA-C18:1が36〜68 pmol及びLPA-C18:2が40〜76 pmolの量で該患者の子宮腔に注入されるものである,上記13の方法。
16.胚盤胞移植に先立ちリゾホスファチジン酸を投与する,上記11の方法。
患者に対して,SEET療法による治療前周期の高温期の7日前からゴナドトロピン放出ホルモン(GnRH)アゴニスト600μgを使用開始し,月経3日目から,次席卵胞の直径が18 mmになるまで連日卵胞刺激ホルモン(FSHまたはHMG製剤)による卵巣刺激を施した。次席卵胞の直径が18 mmを超えたとき,排卵を促した。ヒト絨毛性性腺刺激ホルモン(hCG)5000単位を筋肉注射し,その36時間後に超音波検査法により経膣的に採卵した。卵胞の計測は超音波スキャニング(Mitsubishi RDF173H)により行った。
Embryo Culture, Irvine Scientific, Santa Ana CA USA)の被膜下で,BlastAssist System培地2〔合成血漿代替物(SSR),ヒト血漿アルブミン,グルコース,ピルビン酸ナトリウム,乳酸,硫酸カリウム,硫酸マグネシウム,塩化ナトリウム,リン酸水素ナトリウム,必須アミノ酸,非必須アミノ酸,L-グルタミン,重炭酸ナトリウム,ストレプトマイシン50 mg/L,ペニシリン50,000 IU/L,及びフェノールレッドを含有;MediCult社, Jyllinge, Denmark〕の小滴50μL中で,更に3日,併せて5日目まで培養し胚盤胞を得た。培養プレートとしてFALCON353002 Tissue Culture Dish (Becton Dickinson, Franklin Lakes
USA)を使用した。胚の培養は5%CO2,5%O2,90%N2,37℃,100%湿度に設定してインキュベーター(TE-HER PRODUCT O2・CO2 incubator CP 02-1800シリーズ,ヒラサワ)内で実施した。胚培養上清を回収し,SEET療法に用いるまで-20℃で保存した。なお,この培養過程で得られた初期胚及び胚盤胞は患者に移植された。
SEET療法を受けた45名の患者の胚培養上清で,SEET療法に用いなかった残液をプールし,これを成分分析に供した。プールした残液の量は約2.6
mLであった。
まず最初に,培養上清に含まれる活性成分がペプチドホルモン等のタンパク質成分であると考え,SEET療法における妊娠率の改善に寄与すると考えられるヒト絨毛性性腺刺激ホルモン(hCG)等の培養上清中における濃度をELISA法により測定した。その結果,これらのタンパク質成分は胚培養液中に全く検出されず,活性成分が非ペプチド性の物質であることがわかった。
〔LPAの分析〕
に供した。
検体を分析して得られた各検出ピークの面積と,既知量のLPA-C18:1を含む標準溶液を分析して得られた検出ピークの比から,検体中に含まれる各リゾフォスファチジン酸の濃度を測定した。測定結果を表2に示す。SEET療法において子宮腔内に注入される培養上清の量は約20μLであることから,1回当たり患者に投与されるリゾフォスファチジン酸の量は,LPA-C16:0が約140 pg,LPA-C16:1が約4 pg,LPA-C18:0が約20 pg,LPA-C18:1が約
52pg,LPA-C18:2が約58 pgである。
Claims (3)
- 胚盤胞移植における患者の妊娠を促進するための妊娠促進剤であって,5種のみのリゾホスファチジン酸を含有してなるものであり,該5種のリゾホスファチジン酸がLPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2であり,且つ化学的に合成されたものであり,且つLPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2の相互の含有割合が,モル比で36〜66:1〜2:5〜10:13〜25:15〜28である,妊娠促進剤。
- 胚盤胞移植における患者の妊娠を促進するための妊娠促進剤であって,5種のみのリゾホスファチジン酸を含有してなるものであり,該5種のリゾホスファチジン酸がLPA-C16:0,LPA-C16:1,LPA-C18:0,LPA-C18:1及びLPA-C18:2であり,且つ化学的に合成されたものであり,且つ1回の投与当たり,LPA-C16:0が98〜182 pmol,LPA-C16:1が2.8〜5.2 pmol,LPA-C18:0が14〜26 pmol,LPA-C18:1が36〜68 pmol及びLPA-C18:2が40〜76 pmolの量で該患者の子宮腔に注入されるものである,妊娠促進剤。
- 胚盤胞の移植に先立ち投与されるものである,請求項1又は2の妊娠促進剤。
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| JPN6010063844; 徳村彰、他5名: '保温血漿および卵胞液に存在するリゾホスファチジン酸の生成機構' 脂質生化学研究 36, 1994, 23-26 * |
| JPN6014035378; Biology of Reproduction 77(6), 2007, 954-959 * |
| JPN6014035380; Human Reproduction 22(Suppl.1), 2007, I211-I214 * |
| JPN6014035382; Nature 435(7038), 2005, 104-108 * |
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