Modulation of Uterine Phospholipase $A_2$ Activity by Estradiol During the Delayed Implantation Process in Rats

윤미정,김창미,최임순,유경자,Yoon, Mi-Chung,Kim, Chang-Mee,Choe, Rim-Soon,Ryu, Kyung-Za The Korean Society of Pharmacology 1991 대한약리학잡지 Vol.27 No.2

본 연구에서는 흰쥐의 수정란 착상시기에 estradiol이 prostaglandins(PGs) 합성의 전구체인 arachidonic acid를 생성하는데 관여하는 phospholipase $A_2(PLA_2)$의 활성도를 조절하므로써 PGs의 합성을 촉진하는가를 조사하여 다음과 같은 결과를 얻었다. 자궁의 $PLA_2$ 활성도는 수정란이 착상하는 시기인 임신 제 5일에 증가되었으며, 비착상부위에서보다는 착상부위에서 더 높은 것으로 나타났다. Delayed implantation model에서, $PLA_2$ 활성도는 estradiol을 투여한 지 11시간후에 증가되었으며, dbcAMP를 투여한지 8시간후에 증가되었다. 또한 estradiol을 투여하기 2시간전에 phosphodiesterase inhibitor인 theophylline을 투여하면 estradiol만 투여한것에 비하여 $PLA_2$ 활성도가 증가되었다. Estradiol 또는 dbcAMP와 함께 indomethacin을 투여하면 자궁의 PGs합성은 억제되었으나 $PLA_2$ 활성도에는 영향을 주지않았다. 이상의 결과로 보아 흰쥐의 착상시기에 estradiol은 cAMP를 매개로하여 자궁의 $PLA_2$ 활성도를 촉진하므로써 PGs의 합성을 증가시키는 것으로 생각된다. The present study was performed to determine whether estradiol, via cAMP mediation, induces prostaglandin synthesis by modulating phospholipase $A_2$ activity which hydrolyzes phospholipids into arachidonic acids, a precursor for prostaglandin synthesis, during the implantation process in rats. Uterine phospholipase $A_2$ activity was elevated on day 5 of pregnancy when implantation normally occurs in rats. Moreover, phospholipase $A_2$ activity was higher in the implant sites than in the non-implant sites of uterus on day 6. In delayed implantation model, phospholipase $A_2$ activity was increased at 12 hrs after estradiol administration and at 8 hrs after dbcAMP administration. In addition, higher activity of phospholipase $A_2$ was induced by the treatment of estradiol plus theophylline, compared with estradiol-only treated group. The simultaneous treatment of indomethacin with estradiol or dbcAMP did not alter phospholipase $A_2$ activity compared with estradiol or dbcAMP-only treated group although significant suppression was observed in uterine PGE and $PGF_{2{\alpha}}$ concentrations. These results suggest that estradiol or cAMP stimulates uterine phospholipase $A_2$ activity, thereby increasing prostaglandin synthesis during the implantation process in rats.

cAMP Mediation in Estradiol-induced Uterine Prostaglandin Synthesis During the Delayed Implantation Process in Rats

윤미정,김창미,최임순,유경자,Yoon, Mi-Chung,Kim, Chang-Mee,Choe, Rim-Soon,Ryu, Kyung-Za The Korean Society of Pharmacology 1991 대한약리학잡지 Vol.27 No.2

본 연구에서는 흰쥐의 착상지연을 유도하여 착상기간동안 자궁조직내 prostaglandin (PG) 생합성이 어떠한 인자에 의해서 조절되는가를 관찰하여 다음과 같은 결과를 얻었다. 흰쥐의 착상지연과정동안 estradiol을 처리하면 처리후 4시간만에 자궁조직내의 cAMP의 농도가 급격하게 증가하였다. PGE와 $PGF_2{\alpha}$의 농도는 estradiol을 처리한 후 12시간이 경과하였을때 증가하였으나 $PGF_2{\alpha}$의 증가는 통계적으로 유의하지는 않았다. 또한 indomethacin을 estradiol과 동시에 처리하면 estradiol 처리로 인한 PGE와 $PGF_2{\alpha}$의 농도 증가는 나타나지 않았으나 cAMP 농도는 증가하였다. dbcAMP를 처리하면 자궁내 PGE 및 $PGF_2{\alpha}$의 농도가 증가하기 시작하여 estradiol이 투여시에 비하여 4시간 빨리 8시간후에 최고치에 도달하였으며 phosphodiesterase inhibitor인 theophylline을 전처치하면 estradiol만 투여한 것에 비하여 자궁조직내 PGE 및 $PGF_2{\alpha}$의 농도가 유의하게 증가하였다. 이상의 결과로 보아 흰쥐의 착상지연과정동안 estradiol이 자궁의 prostaglandin 합성을 증가시키며 이러한 증가는 cAMP의 증가를 매개하는 것으로 생각된다. The present study was performed to elucidate the factors which modulate uterine prostaglandin synthesis during the implantation period in rats, by employing delayed implantation model. Administration of estradiol sharply increased uterine cAMP concentration 4 hrs later during the delayed implantation process. Concentrations of uterine PGE and $PGF_2{\alpha}$ were increased at 12 hrs after the estradiol treatment although an increase in $PGF_2{\alpha}$ was not statistically significant. The concomitant treatment of indomethacin with estradiol significantly suppressed estradiol-induced PGE and $PGF_2{\alpha}$ at 12 hrs, while uterine cAMP concentration was not suppressed. The treatment of dbcAMP without estradiol gradually increased uterine PGE and $PGF_2{\alpha}$ showing the maximum 8 hrs later, suggesting that cAMP minics estradiol effect on uterine prostaglandin synthesis during the implantation process. Furthermore, the pretreatment of theophylline, phosphodiesterase inhibitor, induced significantly greater concentrations of uterine PGE and $PGF_2{\alpha}$, compared with estradiol-only treated group. These results suggest that estradiol stimulates uterine prostaglandin synthesis and this process may be mediated by an elevation of cAMP during the delayed implantation process in rats.

흰쥐의 착상기간중 Estradiol이 자궁의 Phospholipase A₂ 활성도에 미치는 영향

윤미정(Mi-chung Yoon),김창미(Chang-mee Kim),최임순(Rim-Soon Choe),유경자(Kyung-za Ryu) 대한약리학회 1991 대한약리학잡지 Vol.27 No.2

본 연구에서는 흰쥐의 수정란 착상시기에 estradiol이 prostaglandins(PGs) 합성의 전구체인 arachidonic acid를 생성하는데 관여하는 phospholipase A₂(PLA₂)의 활성도를 조절하므로써 PGs의 합성을 촉진하는가를 조사하여 다음과 같은 결과를 얻었다. 자궁의 PLA₂ 활성도는 수정란이 착상하는 시기인 임신 제 5일에 증가되었으며, 비착상부위에서보다는 착상부위에서 더 높은 것으로 나타났다. Delayed implantation model에서, PLA₂ 활성도는 estradiol을 투여한 지 11시간후에 증가되었으며, dbcAMP를 투여한지 8시간후에 증가되었다. 또한 estradiol을 투여하기 2시간전에 phosphodiesterase inhibitor인 theophylline을 투여하면 estradiol만 투여한것에 비하여 PLA₂ 활성도가 증가되었다. Estradiol 또는 dbcAMP와 함께 indomethacin을 투여하면 자궁의 PGs합성은 억제되었으나 PLA₂ 활성도에는 영향을 주지않았다. 이상의 결과로 보아 흰쥐의 착상시기에 estradiol은 cAMP를 매개로하여 자궁의 PLA₂ 활성도를 촉진하므로써 PGs의 합성을 증가시키는 것으로 생각된다. The present study was performed to determine whether estradiol, via cAMP mediation, induces prostaglandin synthesis by modulating phospholipase A₂ activity which hydrolyzes phospholipids into arachidonic acids, a precursor for prostaglandin synthesis, during the implantation process in rats. Uterine phospholipase A₂ activity was elevated on day 5 of pregnancy when implantation normally occurs in rats. Moreover, phospholipase A₂ activity was higher in the implant sites than in the non-implant sites of uterus on day 6. In delayed implantation model, phospholipase A₂ activity was increased at 12 hrs after estradiol administration and at 8 hrs after dbcAMP administration. In addition, higher activity of phospholipase A₂ was induced by the treatment of estradiol plus theophylline, compared with estradiol-only treated group. The simultaneous treatment of indomethacin with estradiol or dbcAMP did not alter phospholipase A₂ activity compared with estradiol or dbcAMP-only treated group although significant suppression was observed in uterine PGE and PGE_2α concentrations. These results suggest that estradiol or cAMP stimulates uterine phospholipase A₂ activity, thereby increasing prostaglandin synthesis during the implantation process in rats.

비소세포성 폐암의 척추 전이로 발생한 암성통증에 대한 초오 약침을 포함한 한방 치료 1례

윤미정,조나경,이유리,최홍식,김승모,김경순,Yoon, Mi-jung,Cho, Na-kyung,Lee, Yu-Ri,Choi, Hong-sic,Kim, Seung-Mo,Kim, Kyung-soon 대한암한의학회 2019 大韓癌韓醫學會誌 Vol.24 No.2

Objectives : The purpose of this case report is to examine clinical application of Traditional Korean medicine including aconitum ciliare decaisne pharmacopuncture for cancer pain caused by bone metastasis of non small cell lung cancer. Methods : The patient diagnosed as non small cell lung cancer was treated with pharmacopuncture, acupuncture, electroacupuncture and herbal medicine. We used NRS(Numeric rating scale) and ECOG PS(Eastern Cooperative Oncology Group Performance Status) to observe the effect of the treatment. Results : After the treatment, NRS of cancer pain and ECOG PS score decreased. Also, the frequency of using rapid-onset opioids decreased. Conclusions : This study suggests Traditional Korean medicine treatment including aconitum ciliare decaisne pharmacopuncture is effective in cancer pain control caused by metastasis to bone with multiple organs with non small cell lung cancer.

한의학적 치료로 호전된 전이성 대장암 환자의 복통에 대한 증례보고

윤미정,김나연,최홍식,김승모,김경순,Yoon, Mi-jung,Kim, Na-yeon,Choi, Hong-sik,Kim, Seung-mo,Kim, Kyung-soon 대한한방내과학회 2021 大韓韓方內科學會誌 Vol.42 No.4

Objectives: The aim of this case report is to present abdominal pain relief in a patient diagnosed with colorectal cancer with several organ metastases. Methods: The patient was treated with herbal medicine, acupuncture, and moxibustion. The effect of the treatment was measured by a numeric rating scale (NRS). Results: The NRS of the patient's abdominal pain was reduced after Korean medicine treatment. Conclusions: This case report suggests that Korean medicine may be effective for treating abdominal pain in cancer patients. However, additional study is needed to confirm interactions between Korean medicine and the control of abdominal pain.

Action Mechanism of Antiestrogens on Uterine Growth in Immature Rats

이중빈,윤미정,김창미,홍사석,유경자,Lee, Jung-Bin,Yoon, Mi-Chung,Kim, Chang-Mee,Hong, Sa-Suk,Ryu, Kyung-Za The Korean Society of Pharmacology 1990 대한약리학잡지 Vol.26 No.2

비스테로이드성 항에스트로젠제는 표적기관에서 estrogen 수용체와 상경적으로 결합하므로써 estrogen의 작용을 억제하는 것으로 알려져 있다. 비스테로이드성 항에스트로젠제는 대체로 triphenylethylene계로서 tamoxifen, clomiphene, LYl17018등이 있으며 표적기관에서 estrogen의 작용을 억제하기 때문에 estrogen과 관련된 질환을 치료하는데 이용되어 오고 있다. 본 연구에서는 생후 21-23일된 미성숙 흰쥐를 재료로 항에스트로젠제중 tamoxifen과 LY117018이 자궁세포 성장에 어떠한 영향을 미치며 어떠한 기전으로 estrogen의 작용을 길항하는지를 규명하고자, 항에스트로젠제가 estrogen작용의 중요 지포에 미치는 영향을 비교 관찰하여 다음과 같은 결과를 얻었다. Tamoxifen과 LY117018은 자궁세포에서 estrogen의 영향이 없는 경우에는 estrogen agonist로, estrogen작용하에서는 estrogen antagonist로서 작용하였다. Estrogen 작용의 여러 가지 지표에 대해 tamoxifen이 LY117018보다 agonistic effect는 더 컸으나, antagonistic effect는 LY117018이 더 큰 것으로 나타났다. Estrogen 수용체에 대한 결합능은 LY117018이 estradiol보다는 약간 낮았으나 용량에 비례하여 estrogen 수용체와 결합하였다. 그러나 tamoxifen은 estrogen 수용체에 대한 결합이 아주 낮았다. Estrogen 수용체에 대한 binding affinity는 estradiol(100%), LY117018(77%), tamoxifen(6.3%) 순으로 나타났다. 항에스트로젠제의 생체내 투여는 estrogen 존재 유무에 따라 estrogen 수용체 농도에 agonist 또는 antagonist로 작용하였다. 항에스트로젠제의 단독투여는 progesterone 수용체 생성을 증가시키나, estrogen에 의하여 유도된 progesterone 수용체 생성을 억제하였다. 이상의 결과로 보아, tamoxifen과 LY117018은 estrogen유무에 따라 흰쥐 자궁세포에서 estrogen antagonist로서 뿐만 아니라 agonist로서도 작용함을 알 수 있다. 그러나 estrogen수용체와의 결합능력이 아주 낮은 tamoxifen은, 용량에 비례하여 estrogen수용체에 결합하므로써 작용하는 LY117018과는 다른 기전으로 작용하는 것으로 생각된다. In the present study, we examined the effects of tamoxifen and LY117018 on various parameters for the estrogenic actions in order to understand the mechanism by which tamoxifen and LY117018 act on the uterine cells in 21-23 day old immature rats. Tamoxifen and LY117018 stimulated uterine weight and uterine contents of DNA, protein, and peroxidase activity in the absence of estradiol while inhibited above parameters in the presence of estradiol. Both cytosolic and nuclear progesterone receptors were increased by the treatment of tamoxifen and LY117018 as well as estradiol, but estradiol-induced increase in the progesterone receptors were reduced by the treatment of antiestrogens. These effects were enhanced by the multiple injections of antiestrogens. It seemed that tamoxifen was more agonistic than LY117018 but less antagonistic than LY117018, judged by their effects on various parameters for the estrogenic action. The affinities of estradiol, tamoxifen, and LY117018 for the estrogen receptor were $0.17{\pm}0.01nM(100%)$, $1.10{\pm}0.01nM(6.3%)$, and $0.23{\pm}0.01nM(77%)$, respectively. Furthermore, LY117018 was the competitive ligand for the estrogen receptor in dose-related manner but tamoxifen was not. Following estradiol treatment, nuclear estrogen receptor was sharply increased by 1 h, reaching the maximum by 16 h, while tamoxifen and LY117018 slightly increased nuclear estrogen receptor by 1 h and then decreased thereafter. It is therefore concluded that LY117018 is a competitive antagonist for the estrogen receptor with less estrogenic activity, compared to tamoxifen with low affinity to the estrogen receptor, and tamoxifen may act through other binding site than the estrogen receptor.

RAPD분석에 의한 자란 품종의 유전적 변이 연구

경윤정(Kyung Yun Jeong),윤미정(Yoon Mi Jeong),박기배(Park Ki Bae),박천호(Pak Chun Ho) 한국원예학회 1999 원예과학기술지 Vol.17 No.2

동씨침을 포함한 한방치료로 호전된 정계정맥류로 인한 통증 치험 1례

김나연,윤미정,최홍식,김승모,김경순,Kim, Na-yeon,Yoon, Mi-jung,Choi, Hong-sik,Kim, Seung-mo,Kim, Kyung-soon 대한한방내과학회 2021 大韓韓方內科學會誌 Vol.42 No.5

Objectives: This study investigated the effectiveness of Dong's acupuncture for pain associated with a varicocele. Methods: A 23-year-old male patient visited for pain due to varicocele that occurred on March 2 and was treated with acupuncture and moxibustion three times on March 16, 17, and 19. The Numerical Rating Scale (NRS) was used to evaluate the patient's pain. Results: After the three treatments, the NRS scores decreased, and the patient's subjective symptoms improved. Also, the patient required no medication for a week from the date of treatment start. Conclusions: These findings demonstrate that Korean medicine may be an option for treating a painful varicocele, but further research is required for confirmation.

System Generator를 이용한 MAC 필터의 설계 및 검증

허용원(Hur Yong Won),윤미정(Yoon Mi Kyung),정주수(Jung Ju Su),박지언(Park Ji Un),변건식(Byon Kun Sik) 한국통신학회 2007 한국통신학회 학술대회논문집 Vol.2007 No.7

고지방식이 수컷 마우스 비만모델에서 micro-CT를 이용한 마황(麻黃)과 마우(魔芋)의 복부비만 조절효과

원찬욱,정양삼,윤기현,이희영,윤미정,김보경,박선동,신순식,Won, Chan-Uk,Jung, Yang-Sam,Yoon, Ki-Hyeon,Lee, Hee-Young,Yoon, Mi-Chung,Kim, Bo-Kyung,Park, Sun-Dong,Shin, Soon-Shik 대한한의학방제학회 2008 大韓韓醫學方劑學會誌 Vol.16 No.2

Objectives : We investigated the effects of Herba Ephedrae and Rhizoma Amorphophalli on high fat diet induced obese male mice. Methods : 8 weeks old, high fat diet induced obese male mice were divided into 5 groups: C57BL/6 normal control, obese vehicle control, GGEx55 (Herba Ephedrae), GGEx61 (Rhizoma Amorphophalli), GGEx62 (Herba Ephedrae + Rhizoma Amorphophalli). After mice were treated with GGEx for 8 weeks, we measured body weight gain, food intake, feeding efficiency ratio, rectal temperature, fat weight, plasma leptin and lipid levels. We also took micro-computerized axial tomography (micro-CT) on the mice. Results : 1. GGEx55 and GGEx62 groups significantly decreased body weight gain and feeding efficiency ratio compared with vehicle control. But they significantly increased rectal temperature. 2. Plasma total cholesterol and LDL-cholesterol concentrations were significantly increased by GGEx55 groups, whereas were significantly decreased by GGEx62 groups compared with vehicle control. 3. GGEx55 and GGEx62 groups significantly decreased total, subcutaneous and visceral fat as well as fat areas in micro-CT analysis of abdomen compared with vehicle control. 4. Plasma GOT and GPT concentrations were significantly increased by GGEx55 groups compared with vehicle control. Conclusions : These results demonstrate that GGEx55 and GGEx62 effectively reduces body weight gain, feeding efficiency ratio in high fat diet induced obese mice, leading to the modulation of obesity. In addition, GGEx55 and GGEx62 decreases visceral adipose tissue mass and improves plasma lipids, suggesting that GGEx55 and GGEx62 may act as a therapeutic agent for obesity.