• 제목/요약/키워드: 1-OHP

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그물베도라치, Dictyosoma burgeri의 성숙기 난모세포 스테로이드 대사에 미치는 Nonylphenol과 2,2',4,6,6'-Pentachlorobiphenyl의 효과 (Effects of Nonylphenol and 2,2',4,6,6'-Pentachlorobiphenyl on In Vitro Steroidogenesis in Maturing Oocytes of Ribbed Gunnel, Dictyosoma burgeri)

  • 황인준;백혜자
    • 한국발생생물학회지:발생과생식
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    • 제14권2호
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    • pp.115-121
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    • 2010
  • 본 연구에서는 nonylphenol(NP)과 2,2',4,6,6'-pentachlorobiphenyl(PCB104)이 성숙한 그물베도라치의 난소 스테로이드 대사과정에 미치는 영향을 조사하였다. 그물베도라치의 성숙란을 방사 표지된 스테로이드 전구물질인 $[^3H]-17{\alpha}$-hydroxyprogesterone($[^3H]-17{\alpha}OHP$)와 함께 NP와 PCB104를 각각 100 ng/$m{\ell}$의 농도로 첨가하여 배양하였다. 배양 후 배양액과 난모세포로부터 스테로이드 호르몬을 추출하여 박막 크로마토그래피를 통해 분리 및 동정하였으며, 주요 스테로이드 대사물질로는 testosterone(T)과 estradiol-$17{\beta}$(E2)로 확인되었다. NP는 난경 1.1, 1.3 그리고 1.4 mm인 난모세포에서 T로의 대사를 저해하였으나, 난경 1.2, 1.3 그리고 1.4 mm인 난모세포에서는 E2로의 대사를 저해하였다. PCB104는 모든 난경의 난모세포에서 T로의 대사를 저해하였으며, 난경 1.2, 1.3 그리고 1.4 mm인 난모세포에서는 E2로의 대사를 저해하였다. 결론적으로, NP와 PCB104는 그물베도라치의 난모세포 성숙 과정에 있어 $[^3H]-17{\alpha}OHP$로부터 T와 E2로의 전환을 저해시키는 것으로 사료된다.

Bisphenol A와 Nonylphenol이 노래미, Hexagrammos agrammus 성숙기 난모세포의 스테로이드 생성과정에 미치는 영향 (Effects of Bisphenol A and Nonylphenol on In Vitro Steroid Production in Matured Oocyte of Greenlings, Hexagrammos agrammus)

  • 황인준;김형배;백혜자
    • 한국발생생물학회지:발생과생식
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    • 제12권3호
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    • pp.275-281
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    • 2008
  • 본 연구에서는 해산어를 이용하여 bisphenol A(BPA)와 nonylphenol(NP)이 난모세포 성숙 과정에 어떤 영향을 미치는지 조사하기 위해 성숙단계에 있는 노래미(Hexagrammos agrammus) 난모세포(난경 약 1.88 mm)를 대상으로 in vitro에서 BPA와 NP 처리에 의한 난모세포의 성스테로이드 생성농도를 조사하였다. 난모세포에 BPA와 NP를 농도구별(0.1, 1, 10, 100, 1,000 ng/$m{\ell}$)로 첨가하고, 50 IU의 human chorionic gonadotropin(HCG)를 농도구별 BPA 또는 NP와 함께 첨가하거나 하지 않고 48시간 동안 배양하였다. 배양 후 배양액 내의 $17{\alpha},20{\beta}$-dihydroxy-4-pregnen-3-one($17{\alpha}20{\beta}OHP$), estradiol-$17{\beta}(E_2)$ 그리고 testosterone(T)의 농도를 방사면역측정법(RIA)을 통해 정량하였다. BPA 처리구에서는 100 ng/$m{\ell}$의 농도구에서 HCG 처리 유무에 상관없이 $E_2$ 생성이 촉진되었다. HCG 처리하에서 0.1 ng/㎖의 농도구에서 T 생성은 촉진 되었으나, HCG를 처리하지 않은 실험구의 모든 농도구에서 T 생성은 저해되었다. NP 처리구에서는 HCG를 처리하지 않은 실험구의 10 ng/$m{\ell}$의 농도구에서 $17{\alpha}20{\beta}OHP$와 T 생성이 촉진되었고, 1 ng/$m{\ell}$의 농도구에서는 $E_2$ 생성이 억제되었다. 이상의 결과를 종합하면, 노래미의 성숙단계의 난모세포에서 BPA는 약한 estrogen-agonistic 효과를, NP는 estrogenantagonistic 효과를 지니는 것으로 사료된다.

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북방산 개구리 여포의 스테로이드생성과정에 협막세포와 난구세포의 역할 (Roles of Theca and Granulosa Cells in Follicular Steroidogenesis in Rana dybowskii)

  • 안련섭;소재목;권혁방
    • 한국동물학회지
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    • 제39권3호
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    • pp.273-281
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    • 1996
  • 본인 등은 참개구리를 이용하여 여포의 스테로이드 생성에 관한 two-cell type model을 제시한바 있다. 본 연구에서는 이 model이 북방산 개구리 (R. dybowskii)에도 적용 되는지와 협막세포층에 minor pathway(P 5$\longrightarrow$17$\alpha$-OHP$_4$)가 있는지의 여부를 조사하였다. 이를 위하여 북방산 개구리 난소로부터 intact follicles (IFs), granulosa cell enclosed-oocytes (GcEOs), theca/epithelium (THEP) layers 및 난구세포가 포함되어 있지 않은 순수한 theca/epithelium (P-THEP) layers를 미세해부기술로 분리해 내었다. 이들 여포 조직들은 전구 스테로이드나 개구리 뇌ㅏ수체추출물(FPH)이 포함되어 있는 배양액에서 6시간 배양한 후, 각 여포조직 의해 전환된 산물스테로이드의 양을 방사면역측정법으로 조사하였다.외부에서 첨가된 P 5와 P$_4$는 GcEOs와 IFs에 의하여 효율적으로 P$_4$혹은 17 $\alpha$-OHP$_4$로 전환되었으나 THEP에 의해서는 전환되지 않았다. 더욱이 순수한 협막층(P-THEP)에 의해서는 전환이 거의 이루어지지 않았다. 17 $\alpha$-OHP$_4$및 testosterone 역시 GCEOs와 IFs에 의해서 estradiol (E$_2$) 및 androstenedione (AD)으로 각각 전환되었으나 THEP에 위해서는 정환되지 않았다. 반면에, AD는 THEP과 IFs에 의해서만 T로 전환되어졌으며, AD를 제외한 다른 전구스테로이드들은 THEP 의해서도 T로 전환되지 못했다. 이러한 결과들은 P$_4$, 17 $\alpha$-OHP$_4$AD 및 E$_2$는 주로 난구세포에서 생성되고, T는 주로 협막세포에서 생성되며 T나 E$_2$의 효율적인 생성에 이들 두 세포의 협조가 필요하다는 것을 말해준다. 이는 참개구리에서 제시한 two-cell type model이 북방산개구리 여포의 스테로이드 생성과정에도 적용되며 협막 세포층에는 minor pathway ( P5 to 17$\alpha$-OHP$_4$)가 존재하지 않음을 또한 보여주고 있다.

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쥐노래미, Hexagrammos otakii의 난소발달에 다른 성 스테로이드 호르몬의 활성 변화 (Activity of Sex Steroid Hormones on Ovarian Development in the Greenling Hexagrammos otakii)

  • 황인준;김성연;백혜자
    • 한국수산과학회지
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    • 제40권3호
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    • pp.153-159
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    • 2007
  • We studied oocyte steroidogenesis in relation to oocyte development in the greenling, Hexagrammos otakii, a marine multiple spawner. Vitellogenic and mature oocytes were incubated in vitro in the presence or absence of $[^3H]-17\;{\alpha}-hydroxyprogesterone$ as a precursor. The major metabolites were androgens [androstenedione $(A)_4)$ and testosterone (T)] and estrogens [$17\;{\beta}-estradiol\;(E_2)$ and estrone ($E_1$)] in vitellogenic oocytes. The metabolic rate of T was lower in 1.08 to 12-mm oocytes, while that of $E_2$ increased with oocyte size. The endogenous productions of T, $E_2$ and 17 ${\alpha}-hydroxy$, 20 ${\beta}-dihydroprogesterone\;(17{\alpha}20{\beta}OHP)$ were quantified using a radioimmunoassay in the non-precursor group. The endogenous levels of T and $E_2$ were highest in 1.08 to 12-mm oocytes and $17{\alpha}20{\beta}OHP$ was produced only in 1.90 to 95-mm oocytes. The relationship between oocyte size and steroidogenesis showed that 1.08 to 12-mm oocytes are full vitellogenic following induction of the maturation process. Moreover, $17{\alpha}20{\beta}OHP$ acts as a maturation inducing hormone in H. otakii.

일반 인구집단에 대한 대기중 총먼지의 생물학적 노출지표로서 요중 1-hydroxypyrene 및 2-naphthol의 유용성 (Urinary 1-Hydroxypyrene and 2-Naphthol as a Biological Exposure Markers of Total Suspended Particulate in the General Population)

  • 강종원;김헌;강대희;이철호;조수헌
    • Journal of Preventive Medicine and Public Health
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    • 제33권3호
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    • pp.306-312
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    • 2000
  • Background : Polycyclic aromatic hydrocarbons (PAH) are well known environmental pollutants. The measurement of PAH in ambient air is not commonly used, because it is quite difficult to perform and is unreliable. Using biomarkers of PAH can be an alternative approach to this problem. The PAH in ambient air is absorbed in particulate matter. Total suspended particulate(TSP) or particulate matter of less than $10{\mu}m$ in diameter (PM10) can be easily measured. Therefore, TSP or PM10 can be used as a surrogate measurements of ambient air PAH. Objectives : We investigated whether the urinary concentration of two biomarkers of PAH, 1-hydroxypyrene (1-OHP) and 2-naphthol, could reflect the total suspended particulate in the general population. Methods : In order to exclude the effects of occupational exposure and smoking, first grade middle school students were included in this study. Four middle schools within a one kilometer boundary of ambient air monitoring stations were selected. Total suspended particulate was regarded as the marker of airborne PAH. Diet and smoking data were collected by self administered questionnaires, and spot urine samples were collected. Urinary 1-OHP and 2-naphthol were analyzed by high performance liquid chromatography. Results : The correlation between urinary 1-OHP, 2-naphthol and passive smoking was not statistically significant. The correlation between urinary 1-OHP and TSP indices was not statistically significant. The correlations between urinary 2-naphthol and TSP of two lag days, one lag day, and zero lag days were statistically significant. The statistical significance of two lag days was the strongest (p=0.001), one lag day was the next (p=0.0275), and zero lag days was the weakest (p=0.0349). Conclusion : Our results imply that the urinary concentration of 2-naphthol can be applied as a PAH exposure marker for the general population with low PAH exposure.

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The Relationship between Urinary 8-hydroxydeoxyguanosine and Polycyclic Aromatic Hydrocarbons Exposure in Working Environment

  • Lee Jong-Seong;Kim Eun-A;Lee Yong-Hag;Moon Deog-Hwan;Kim Kwang-Jong
    • 대한의생명과학회지
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    • 제11권2호
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    • pp.143-152
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    • 2005
  • To investigate the exposure effect of polycyclic aromatic hydrocarbons (PAHs), we analyzed the relationship between urinary 8-hydroxydeoxyguanosine (8-OHdG) concentration and PAHs exposure. The study population contained 44 workers in steel-pipe coating and paint manufacture industries. We measured airborne total PAHs as an external dose, urinary 1-hydroxypyrene (1-OHP) as an internal dose of PAHs exposure, and urinary 8-OHdG as an effective dose of oxidative DNA damage. There was significant correlation between the urinary concentration of l-OHP and the environmental concentration of PAHs, pyrene, urinary cotinine, AST, and GGT. The mean of urinary 8-OHdG was $17.07\pm1.706{\mu}g/g$ creatinine in workers exposed to airborne PAHs. There was significant correlation between the urinary concentration of 8-0HdG and the airborne concentration of PAHs. From the results of stepwise multiple regression analysis about 8-OHdG, significant independents was total PAHs. In this study, there were significant correlation between the urinary concentration of 8-OHdG and the airborne concentration of PAHs. The urinary 1-OHP was effective index as a biomarker of airborne PAHs in workplace. But it was influenced by non-occupational PAHs source, smoking and biomarkers of liver function test.

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Progesterone의 이화(異化)효소, 20α-hydroxysteroid dehydrogenase의 활성 및 활용에 관한 연구 1. 20α-hydroxysteroid dehydrogenase의 활성 및 혈청 progesterone 농도의 변화 (Activity and application of 20α-hydroxysteroid dehydrogenase in rat 1. Changes in activities of 20α-hydroxysteroid dehydrogenase and serum progesterone concentration)

  • 강정부;곽수동
    • 대한수의학회지
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    • 제34권4호
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    • pp.867-872
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    • 1994
  • Progesterone catabolizing enzyme, the enzyme $20{\alpha}$-hydroxysteroid dehydrgenase($20{\alpha}$-HSD) is pivotal in the regulation of ovarian function in rodents, which catabolizes progesterone into biologically inactive $20{\alpha}$-hydroxypregn-4-en-3-one($20{\alpha}$-OHP). In this study was carried out the influence of $20{\alpha}$-HSD activity of ovarian function, we investigated changes in ovarian cytosol $20{\alpha}$-HSD activity and serume progesterone concentration during the estrous cycles and pregnancy in rat. During the estrous cycles, the $20{\alpha}$-HSD activities were highest on the progestrous, but serum progesterone concentration was lowest on this phase. During the pregnancy, the $20{\alpha}$-HSD activities were relatively higher early pregnancy(day-1-3 gestation) and late pregnancy(day 21 to parturition), serum progesterone concentration was maintained significantly high to day 19 of gestation. The $20{\alpha}$-HSD activities were lower during the middle pregnancy. From these results, ovarian $20{\alpha}$-HSD activities may possibly act as physiologically very important in the control and maintenance of estrous cycles in rat.

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