• Journal of Periodontal and Implant Science
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• 제29권1호
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• pp.31-40
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• 1999

Many factors may affect periodontal changes during the physiologic conditions of woman(e.g. puberty, menstrual cycle, pregnancy, menopause). Recently many research has focused on the immunological changes of host, but the exact mechanism is not clear. Collagen is a major constituent of periodontium, and collagenase specifically digests the collagen and plays a role in destruction of periodontal tissue. So, I suppose that it participates with the cytokines in the inflammation of gingiva and vascular response during the changes of female sex hormones. Because there are some evidences of the existence of the receptors of estrogen and progesterone in the gingiva, it may be a target tissue of female sex hormones. In this experiment, gingival fibroblast and periodontal ligament cell were cultured in the presence of various concentrations of estrogen or progesterone corresponding to the menstrual cycle and pregnancy. Collagenase activity of the supernatant of culture media was determined by Spectrophotometric collagenase assay. The enzyme activity was calculated by the % decrease of the coated collagen. 1. The estrogen at both concentrations had no effect on the activity of collagenase of the gingival fibroblast. 2. The progesterone had some effect on the collagenase activity of the gingival fibroblast at low and high concentration of menstrual cycle, and elevated the enzyme activity at all range of pregnancy concentrations. 3. In periodontal ligament cells, estrogen elevated the enzyme activity at the early pregnancy concentration and progesterone elevated at the concentration just before menstruation. In this experiment, pregesterone elevated the collagenase activity of gingival fibroblast and periodontal ligament cells. But the mechanism of the up-regulation of the enzyme activity was not confirmed. The more experiments of direct effect of progesterone on gingival at the molecular level(e.g. northern blot analysis) can reveal the exact mechanism.

• 대한한방종양학회지
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• 제4권1호
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• pp.55-70
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• 1998

It has been known that "Gobongeonyangdan" has a certain effects on male sterility in the field of oriental medicine. This thesis purposes to prove such effects of the medicine especially concerning sex hormones and hematogenesis. In the study were used three groups of rats: two of those were treated with Gobongeonyangdan with a variety of quantity and the other untreated. The experiment spans for 35 days: tests upon those subjects were done three times on the 7th, 21st, and 35th day checking the change of testosterone, estradiol, LH, FSH and iron in the serums, and RBC, hematocrit and hemoglobin levels. The results obtained from the study are as follows: 1. The content of testosterone in the serums marked a significant increase in both treated groups in comparison to the untreated group. 2. The content of estradiol in the serums showed a significant increase in the treated groups as to the untreated. 3. The content of LH in the serums increased significantly in the treated groups as to the untreated. 4. The content of FSH in the serums also increased remarkably in the two treated groups as to the untreated. 5. The content of iron in the serum was seen to be increased in the treated groups rather than the untreated group. 6. The RBC was observed to show a tendency toward a significant increase in both the treated groups in comparison with the untreated group. 7. The hemoglobin levels were also increased significantly in the treated groups as to the untreated. 8. The hematocrit levels were decreased significantly in one of the two treated group(sample A group) and there was no difference in the other group(sample B group) in comparison with the untreated group. Consequently, "Gobongeonyangdan" may well be a favorable medicine for patients two have sexual functional disorder and it is also effective on hematogenesis.

• 한국수산과학회지
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• 제43권5호
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• pp.474-481
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• 2010

The sperm collection time, sex steroid hormones, and gonadal development of protandrous black porgy, Acanthopagrus schlegeli, acclimated in freshwater for more than 2 years were investigated to evaluate its reproductive capability. The gonadal development of black porgy reared in seawater and freshwater could each be classified into four successive stages. For black porgy reared in seawater (BSW) as the control, these were the growing (December to February), mature (February to March), spent (March to June), and degeneration and resting (July to December) stages; for black porgy reared in freshwater (BFW), these were the growing (November to January), mature (January to February), spent (February to May), degeneration and resting (June to November) stages. In both BSW and BFW, the plasma cortisol levels were the highest in March. The plasma testosterone (T) levels of BSW and BFW were the highest in March and February, respectively. The plasma estradiol-$17{\beta}$ ($E_2$) levels did not differ significantly between BSW and BFW. The 11-ketotestosterone (11-KT) levels in the plasma of BSW and BFW were the highest in April. Sperm was collectible from March to June in BSW and from February to May in BFW. The results indicated that the gonadal maturation of BFW was about 1 month faster than that of BSW.

• 한국양식학회지
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• 제11권4호
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• pp.513-519
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• 1998

인간의 태반성 성선자극 호르몬(HCG) 또는 성선자극 호르몬-방출 호르몬 유도체(GnRH-a) 단독 주사와 HCG+GnRH-a, GnRH-a+prostaglandin E sub(2) (PGF sub(2)), GnRH-a+pimozide를 복합적으로 주사하여 성숙한 암컷 쏘가리에서 배란 유도 실험을 하였다. 호르몬과 유도체의 반응 효과는 배란후 인공 수정하여 수정율과 배체형성율을 측정하여 결정하였다. 일반적으로 GnRH-a 실험군이 HCG 실험군에 비해서 수정율과 배체형성율 및 부화율이 높았다. HCG(5,000 IU/kg)+(GnRH-a(10 ${\mu}$g), GnRH-a(10 ${\mu}$g/kg)+PG$F^2$(500 ng/kg) 및 GnRH-a(10 ${\mu}$g/kg)+pimozide(1-5 mg/kg)에서 89% 이상의 높은 부화율을 보였다. 본 연구에서 사용된 성성숙 호르몬과 자극물질로 처리된 모든 암컷에서 배란이 유도되었지만, HCG+GnRH-a+dopamine과 GnRH-a+PG$F_2$+indometacin 처리군에서는 배란이 억제되었다. 이들의 결과는 산란시기에 여러 가지 성성숙 호르몬과 관련된 호르몬과 성성숙 억제물질(GRIF)이 분비된다는 점을 시사한다.

• Asian-Australasian Journal of Animal Sciences
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• 제23권5호
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• pp.649-658
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• 2010

Myogenic satellite cells (MSCs) are adult stem cells that activate and differentiate into myotubes. These stem cells are multipotent as they transdifferentiate into adipocyte-like cells, nerve cells and osteocytes. The effects of steroid hormones ($E_2$ and testosterone) were studied as a further step toward understanding the mechanism of MSCs proliferation and differentiation. In this study, MSCs were grown continuously for 87 days, implying that there may be a group of MSCs that continue to proliferate rather than undergoing differentiation. Isolated MSCs were cultured in Dulbecco's Modified Eagle's Medium supplemented with adult male, female or castrated bovine serum to observe the effect of steroid hormones on MSC proliferation. Cell proliferation was the highest in cultures supplemented with male serum followed by female and castrated serum. The positive effect of male hormone on MSC proliferation was confirmed by the observation of testosterone-mediated increased proliferation of cells cultured in medium supplemented with castrated serum. Furthermore, steroid hormone treatment of MSCs increased lipid accumulation in myotubes. Oil-Red-O staining showed that 17${\beta}$-estradiol ($E_2$) treatment avidly increased lipid accumulation, followed by $E_2$+testosterone and testosterone alone. To our knowledge, this is the first report of lipid accumulation in myotubes due to steroids in the absence of an adipogenic environment, and the effect of steroid hormones on cell proliferation using different types of adult bovine serum, a natural hormonal system. In conclusion, we found that sex steroids affect MSCs proliferation and differentiation, and lipid accumulation in myotubes.

• Clinical and Experimental Reproductive Medicine
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• 제42권4호
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• pp.131-135
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• 2015

The thyroid hormones act on nearly every cell in the body. Moreover, the thyroid gland continuously interacts with the ovaries, and the thyroid hormones are involved in almost all phases of reproduction. Thyroid dysfunctions are relatively common among women of reproductive age, and can affect fertility in various ways, resulting in anovulatory cycles, high prolactin levels, and sex hormone imbalances. Undiagnosed and untreated thyroid disease can be a cause of subfertility. Subclinical hypothyroidism (SCH), also known as mild thyroid failure, is diagnosed when peripheral thyroid hormone levels are within the normal reference laboratory range, but serum thyroid-stimulating hormone levels are mildly elevated. Thyroid autoimmunity (TAI) is characterized by the presence of anti-thyroid antibodies, which include anti-thyroperoxidase and anti-thyroglobulin antibodies. SCH and TAI may remain latent, asymptomatic, or even undiagnosed for an extended period. It has also been demonstrated that controlled ovarian hyperstimulation has a significant impact on thyroid function, particularly in women with TAI. In the current review, we describe the interactions between thyroid dysfunctions and subfertility, as well as the proper work-up and management of thyroid dysfunctions in subfertile women.

• 한국임상수의학회지
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• 제29권5호
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• pp.400-403
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• 2012

10년령의 수컷 푸들이 복부팽만, 등쪽 몸통 부위 탈모, 간비대와 혈청 알칼리인산분해효소의 지속적인 상승으로 전북대학교 수의과대학 동물병원에 내원하였다. 간 생검 및 미세침흡인세포 검사법과 PAS 염색을 실시한 결과 공포성 간병증 및 간세포에 글리코겐이 침착된 것을 확인 하였다. ACTH 자극 시험 실시 전 후 코티솔 및 부신과 관련된 성 호르몬의 농도를 측정하였다. 측정결과 안드로스텐디온, 프로게스테론 및 수산화 프로게스테론의 상승을 관찰할 수 있었으며 코티솔농도는 정상 범위내에 존재하였다. 진단은 성호르몬과 관련된 비정형의 부신피질 기능 항진증으로 내렸으며 치료는 트릴로스탄으로 하였다. 치료 8주 후 등 부위의 탈모를 포함한 임상증상들이 개선되었다.

• Biomolecules & Therapeutics
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• 제9권2호
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• pp.119-124
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• 2001

In order to determine the role of dehydroepiandrosterone (DHEA), the important sex-steroid hormone precursor, in vascular reactivity in rats, animals were treated for two weeks with DHEA or sex hormones, and the vascorelaxant and contractile responses of isolated aorta were examined. DHEA diminished the acetylcholine (ACh)-induced relaxation in female rats, while the drug was without effect in males. Testoterone lowered the vasorelaxant activity to ACh in either sex. 17$\beta$-Estradiol enhanced ACh-induced vasorelaxation in male rats, but this female sex hormone did not influence in females. In male rats, the androgen receptor antagonist flutamide also enhanced vasorelaxant action of ACh. When the male rat aorta was incubated in vitro with a nitric oxide (NO) synthase inhibitor L-NAME, phenylephrine-induced contraction was greatly potentiated in DHEA-pretreated rats compared to control ones. The present results suggest that DHEA stimulates mainly androgen in female, but both androgen and estrogen in male rats. The participation of NO In the modulation of vascular reactivity with pretreated DHEA was also considered.

• 한국양식학회지
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• 제9권3호
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• pp.279-285
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• 1996

넙치의 전 암컷 집단의 생산을 위한 연구의 일환으로 실제 양식 어민이 손쉽게 이용할 수 있는 성전환 처리방법을 개발하고자, 부화 후 30일째부터 90일까지 60일간 $17{\beta}-methyltestoste-rone$ (MT)과 $estradiol-17{\beta}\;(E_2)$을 $1\~100$ ppb로 매일 2시간 동안 침지하여 성전환을 유도하였다. 부화 후 200일째의 실험군의 성비는 대조군에서 수컷이 $46.7\%$로 나타나 암수비가 거의 1 : 1이었으나, MT에 의한 수컷 유도율은 1 ppb 처리군이 $72.5\%$, 그리고 10 ppb 처리군이 $87.2\%$로 나타났고, 특히 100 ppb 처리군의 경우 $100\%$로 나타났다. $E_2$에 의한 암컷 유도율은 1 ppb 처리군에서 $75.5\%$ ,10 ppb 처리군에서 $91.9\%$였고, 가장 높은 농도인 100 ppb에서는 $97.2\%$로 나타났다. 호르몬 농도에 따른 각 처리군별 생존율 및 성장은 유의한 차이가 없었다(P>0.05).

• Clinical and Experimental Reproductive Medicine
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• 제51권2호
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• pp.151-157
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• 2024

Objective: People vaccinated with the coronavirus disease 2019 (COVID-19) (severe acute respiratory syndrome coronavirus-2 [SARS-CoV-2]) mRNA vaccine have reported experiencing various adverse effects. For instance, reproductive-age women have presented with complaints of abnormal uterine bleeding or menstrual cycle changes. We speculated that differences in basal sex hormone levels before and after vaccination may be present in women who experienced irregular bleeding or menstrual cycle changes; thus, this study aimed to investigate the differences in basal sex hormone levels of women before and after two doses of SARS-CoV-2 mRNA vaccination. Methods: This retrospective study included patients who received SARS-CoV-2 mRNA vaccines between January 2021 and February 2022 at a single center. In an outpatient setting, patients were queried regarding their menstrual cycle, the date of SARS-CoV-2 mRNA vaccination, vaccination type, and vaccination side effects. Differences in basal hormone levels (menstrual cycle days 2-3, follicle-stimulating hormone [FSH], luteinizing hormone [LH], and estradiol) before and after vaccination were compared. Results: Among the 326 patients, patients with no laboratory records of the hormones were excluded. The median time interval between SARS-CoV-2 mRNA vaccination and the laboratory test day was 79 days (interquartile range, 44 to 127). A comparative analysis of these hormones before and after vaccination revealed no significant differences. Subgroup analyses based on age and reported adverse events also found no statistically significant differences. Conclusion: This study showed no significant differences in basal hormone levels (FSH, LH, and estradiol) before and after SARS-CoV-2 mRNA vaccination.