Kim, B.S.;Oh, K.S.;Kim, J.P.;Bae, C.S.;Kim, S.H.;Kim, J.T.;Park, I.C.;Park, S.G.;Son, C.H.
Journal of Embryo Transfer
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v.21
no.3
/
pp.207-216
/
2006
Vaginal cytology was examined in 12 Shih-tzu bitches to establish the accurate basic data for estimate to the optimal mating time and ovulation time. The mean duration of proestrus and estrus were $9.09{\pm}0.83\;(mean{\pm}SD)$ days and $7.36{\pm}0.47$ days in pregnant bitches. The gestational length in the 12 pregnant bitches was $65.2{\pm}0.5$ days in pregnant bitches when Day 0 was timed from the first day of male acceptance. Characteristic features of vaginal cytology during the estrous cycle were the high proportion of large intermediate cell, superficial cell, anuclear cell and erythrocyte in proestrus, superficial cell, anuclear cell and erythrocyte in estrus, and parabasal cell, small and large intermediate cell and leukocyte in diestrus, respectively. Cornification index (CI) was the high proportion in proestrus and estrus, then it decreased in diestrus and anestrus. When Day 0 was timed from the day of the first male acceptance, the CI peak was Day 2 and maintained above 80% between Day -4 and Day 6 during 11 days, and above 90% between Day -1 and Day 5 during 7 days. In relationship between CI and reproductive hormones, CI showed peak at the first day after plasma estradiol-$17{\beta}$ concentration peak and plasma progesterone concentration was first increased above 4.0 ng/ml at Day 0 which was the first day after CI peak. In conclusion, ovulation in Shih-tzu bitches occurred at the first day after CI peak. Vaginal cytology is the simple and reliable method for estimating estrous cycle, optimal breeding time and ovulation time in Shih-tzu bitches.
Purpose: Endometriosis has been thought to be related with blood stasis in uterus. Pinelliae Tuber is a herb which has effectiveness of dispelling phlegm which can be transformed into blood stasis, so is used in gynecology blood stasis-desease. Therefore in the present study, the effects of Pinelliae Tuber on endometriosis were investigated. Also retention enema therapy acts on the limited part directly, so is used frequently in gynecology clinic. This study was to examine the comparative effects on the surgical induction of endometriosis in the rat between orally and rectally administered with Pinelliae Tuber extract. Methods: The endometrial tissue was autografted to Rat's small intestine. Rats with surgically induced endometriosis were orally and rectally administerd with Pinelliae Tuber extract for 40 days. Size of ectopic uterine implants at the serosal wall and concentration of progesterone, estradiol, $TNF-{\alpha}$ and IL-2, IL-4, IL-6, IL-I0 in serum were examined and compared with the control group. Results: There was no difference in the size of ectopic uterine implants of experimental group compared with control group. The concentration of IL-10 level was significantly decreased in orally administered experimental group and the concentration of progesterone, IL-6 level was significantly decreased in rectally administered experimental group. There was no significant difference between orally and rectally administerd with Pinelliae Tuber. Conclusion: Judging from the above results, it can be suggested that Pinelliae Tuber should be not a useful agent for inhibiting the proliferation of uterine endometrial tissue. There is no difference between orally and rectally administerd with Pinelliae Tuber extract.
CYP1B1 enzyme metabolize PAHs and estradiol. CYP1B1 metabolize estradiol to 4-hydroxyestradiol that is considered as carcinogenic metabolite. Luciferase activity was induced about 20 folds over that control by 1 nM TCDD (2,3,7,8-tetrchlorodibenzo-p-dioxin) and these inductions were dose-dependent. Recent industrialized society, human hasbeen widely been exposed to widespread environmental contaminants such as PAHs (polycyclic aromatic hydrocarbon) that are originated from the incomplete combustion of hydrocarbons. PAHs are known to be ligands of the AhR (aryl hydrocarbon receptor). Induction of cytochrome P4501B1(CYP1B1) in cell culture is widely used as a biomarket for PAHs. Therefore we have studied the effect of PAHs in the human breast cancer cells MCF-7 to evaluate bioactivity of PAHs. Cytochrome P4501B1(CYP1B1) is known to be inducible by xenobiotic compounda such as policyclic aromatic hydrocarbon (PAH) and dioxins such as 2,3,7,8-tetrachloro-dibenzo-p-dioxin(TCDD). And these induction of CYP1B1 is also regulated by many categories of chemicals. In order to investigate the effects of several chemicals on CYP1B1 gene expression in luciferase gene, and then transfected into these cells. After treatment of chemicals, the luciferase activity was measured. We examined effects of PAHs on the CYP1B1-lucifrease reporter gene and CYP1B1 mRNA level. Benzo(k)fluoranthene showed strong response to CYP1B1 promoter activity stimulation, and also CYP1B1 mRNAs increase in MCF-7 cells in a concentration-dependent manner. flvonoids such as genistein decreased B(k)F induced luciferase activity at low concentration. it exhibited stimulatory effect at high concentration.
Su, Chin-Hui;Cheng, Chih-Hsiang;Lin, Jung-Hsin;Liu, Hsiu-Chou;Yu, Yen-Ting;Lin, Chai-Ching;Chen, Wei-Jung
Animal Bioscience
/
v.34
no.11
/
pp.1870-1878
/
2021
Objective: The objective of this experiment was to investigate the effects of different colors produced by light emitting diode (LED) on Brown Tsaiya ducks. Methods: A total of 144 female Brown Tsaiya ducks were randomly allocated into three individual cage rearing chambers with different LED illumination colors as treatments. Three different treatments were: i) white color, ii) blue color, and iii) red color. The experiment periods were from ducks 21 to 49 weeks of age, determined traits included i) egg laying performance, ii) feed intake, iii) egg shell breaking strength, iv) egg shell thickness, v) egg Haugh unit, vi) egg weight, vii) serum Estradiol and Progesterone concentration, and viii) behavior pattern. Results: The results indicated that when compared with white and blue color, red color could stimulate ducks sexual maturation and raised the egg laying performance. The red light group was also observed to have the highest feed intake among three treatments. The blue treatment had the lowest egg shell breaking strength and the highest egg weight among three treatments, nevertheless, no significant difference was observed among three treatments on egg shell thickness and egg Haugh unit. The red light group had higher serum estradiol concentration than the white and blue groups, but no significant difference among treatments on the serum Progesterone concentration was found. The results of behavior pattern indicated that red light group showed more feeding and less resting behavior compared to the blue light group. Conclusion: We found a potential of applying red light illumination in the indoor laying duck raising system with positive results on egg laying performance and acceptable egg weight, equivalent egg qualities compared to white and blue light.
Trigonella foenum-graceum L. (fenugreek) is a phytoestrogen, a nonsteroidal organic chemical compound from plants which has similar mechanism of action to sex hormone estradiol-$17{\beta}$. This study aims to assess the effectivity of fenugreek seeds extract on collagen type I alpha 1 (COL1A1) and collagen type III alpha 1 (COL3A1) which are both decreased in aging skin and become worsen after menopause. This in vitro experimental study used old human dermal fibroblast from leftover tissue of blepharoplasty on a postmenopausal woman (old HDF). As a control of the fenugreek's ability to trigger collagen production, we used fibroblast from preputium (young HDF). Subsequent to fibroblast isolation and culture, toxicity test was conducted on both old and young HDF by measuring cell viability on fenugreek extract with the concentration of 5 mg/mL to $1.2{\mu}g/mL$ which will be tested on both HDF to examine COL1A1 and COL3A1 using ELISA, compared to no treatment and 5 nM estradiol. Old HDF showed a 4 times slower proliferation compared to young HDF (p<0.05). Toxicity test revealed fenugreek concentration of $0.5-2{\mu}g/mL$ was non-toxic to both old and young HDF. The most significant fenugreek concentration to increase COL1A1 and COL3A1 secretion was $2{\mu}g/mL$ (p<0.05).
Ovulation induction was done with 3 different regimens as clomid combined with HMG, HMG only, and FSH combined with HMG in 28 menstrual cycles for IVF-ET and GIFT program. The appearance of endogenous LH surge, estradiol plateau, atypical LH surge, and time from initiation to peak of LH surge in serum and urine were observed and compared in 3 groups. 1. The estradiol concentration of serum LH surge day was similar in three groups but 1st group (Clomiphene Citrate+Sequential HMG) was slightly higher at $1924.0{\pm}865.1\;pg/ml$. In regards to the existence of serum estradiol plateau, 3rd group (FSH+Sequential HMG) was highest at 60%, and 1st group and 2nd group (HMG only) were similar at 33% and 44% respectively. 2. The number of ovarian of ovarian follicle which was more than 18mm in diameter was $4.1{\pm}2.0$, $4.2{\pm}2.1$ respectibely for 2nd group and 3rd group. Although the numbers were slightly higher thean 1st group for each ovarian follicle, serum estradiol value per follicle was higher for 1st group at $583.0{\pm}261.2pg/ml$. 3. When measuring the urine LH surge according to Hi-Gonavi and according to the standard set by three different types of surge, simultameous satisfaction for 1st group, 2nd group, 3rd group was two cases, five cases, four cases respectively at 40%, and the remained cases were composed of numorous type combination which satisfied the two definition, simultaneously in this study, the LH surge starting time was determined only in the cases tow combination were satisfied simultaneously at first, but there are something to study more. In one case of the 3rd group. 4. The concentration of LH surge start in urine and serum of 2nd group was highest at306. $0{\pm}287.2IU/l$ and $34.0{\pm}9.9mIU/ml$ and 1st group was low at $116.6{\pm}66.1IU/l$ and 7.4mIU/ml. The urine and serum value of LH was highest at $1644.4{\pm}988.8IU/l$, $65.9{\pm}15.0mIU/ml$ for 2nd group, 1st group was low at urine, and 3rd group was low of serum. With pregnancy established, the LH concentration of urine was relatively high but on the contrary the LH concentration of serum was low compared to urine concentration. 5. Time from LH surge start to the maximun of urine and serum value was highest at 15. $7{\pm}9.1$ hrs and $10.8{\pm}4.9$ hrs for 1st group and 3rd group. With pregnancy established, time was shortened for urine but on the contrary serum showed an increase in time. 6. The concentration of LH which increases with time on urine was highest at 2nd group ($194.6{\pm}76.8\;IU/hour$). The lowest increase for serum was at 3rd group (2.1mIU/hour). With pregnancy established, urine showed more increase than control group ($266.5{\pm}47.4\;IU/hour$) and for serum there was similar increase ($3.4{\pm}0.8\;mIU/hour$). 7. There were two examples of non-typical surge from 1st group and 3rd group each. Among these three cases showed a reestablishment of LH surge after 10-24 hours. 8. Endogenous spontaneous Lh surge occurs once for each 2nd group and 3rd group.
Kim, Hyun-Chul;Kum, Eun-Joo;Kwon, Do-Hyoung;Lee, Hye-Young
Biomedical Science Letters
/
v.15
no.3
/
pp.217-227
/
2009
The present study was set to evaluate the effect of pomegranate extracts on improvement of the menopausal syndromes such as face flushing in ovariectomized rats by carrying out short- and long-term experiments. Pomegranate extracts used to feed rats were prepared from the pulp part which does not contain the rid of the pomegranate, and were dissolved in propylene glycol. From the short-term (16 days) experiment, it was clear that when the 25, 250, 1,250 mg/kg/day concentrations of pomegranate extracts were orally fed to ovariectomized rats, the body temperature of the rats in all the 3 groups were decreased with statistical significance compared to other control groups which were fed with propylene glycol only. Especially, the body temperature decreased by $2.7^{\circ}C$ compared to control groups even when the pomegranate extracts were fed at the low concentration of 25 mg/kg/day implying the usefulness of pomegranate extracts in improving face flushing troubles. In addition, the body weight of the groups fed with pomegranate extracts also decreased when compared to groups fed with only propylene glycol, and the results were also statistically significant. In case of the estradiol level in the blood of rats, the levels were somewhat higher in the groups fed with pomegranate extracts than the control groups, even though the difference was not statistically significant. As found from the results of the short-term experiment, in long-term experiment, the groups fed with pomegranate extracts showed statistically significant decrease in the body temperature and the body weight, whereas the increase of the estradiol levels in blood in each groups were statistically insignificant. During the short- and long-term experiments, no sign of toxicity was found in rats fed with pomegranate extracts indicating no toxic side effects of the pomegranate extracts when orally fed. The concentrations of pomegranate extracts 25, 250, 1250 mg/kg/day treated to ovariectomized rats in this study can be estimated to be 1.5, 15, and 75 g/day when treated to women whose body weight is 60 kg which is average for women with menopausal syndromes. Since even the 75 g/day of high concentration of pomegranate extracts did not show any toxicity in short- and long-term experiments, taking 1.5 g/day concentration of pomegranate extracts would be safe dose for not causing any side effects. Therefore, it can be concluded from the results of this study that taking 1.5 g/day of pomegranate extracts for certain period time will improve the menopausal syndromes including face flushing.
This study evaluated the effect of ANTORIN R-10(pFSH), a commercially available follicle stimulating hormone on ovarian morphology, on follicular development and serum estradiol levels in rats. Immature female Wistar S/T rats(27 day old; 80-100 g B.wt) maintained under controlled environmental conditions($22{\pm}2^{\circ}C$; 50% humidity; 12 h light/12 h dark cycle) with free access to standard laboratory feed and tap water were utilized. Animals were allowed to acclimatize to the new environment for at least 2 weeks before being included in the experiment. Rats were randomly allotted to 5 groups(Control, SL 0.1AU, SH 0.2AU, TL 0.1AU and TH 0.2AU). ANTORIN R-10 was subcutaneously injected twice daily for 3 days. Twenty hours after hormone treatment, blood was collected to estimate the serum estradiol $17-\beta$ concentration. Immediately, all rats were sacrificed and the ovarian morphology, ovary weight and number of follicles were recorded. Ovaries were fixed for histomorphological examination. Higher standard and treatment groups were significantly increased on ovary weight and the number of follicles more than 1mm compared with lower standard and treatment. However, no difference revealed between standard and treatment groups. ANTORIN R-10 was similar effects of follicles development and maturation compared with House standard FSH.
The condition of the endometrium is an important factor which may influence the success or failure in IVF-ET. This study was undertaken for evaluation of the value of endometrial growth as an early predictor for the success of IVF. Ultrasonographic endometrial measurement were performed in 43 IVF cycles that conceived, 101 cycles that did not with an IVF-ET There was no significant difference in the endometrial thickness and the serum concentration of estradiol in the pregnant versus nonpregnant group(10.4 vs. 9.9 mm: 2348 vs. 2017 pg/ml no hCG administration day). No correlation was found between the ultrasound image and serum estradiol levels around the time of hCG administration(r=0.54, p=0.13 no Day 2; r=0.45, p=0.14 no Day 1). The duration of gonadotropin treatment, number of follicles, number of oocytes retrieved, and fertilization rate were not statistically different in the two groups, however, there was a significant difference in the number of embryos in the pregnant versus nonpregnant group)p< 0.05). A higher pregnancy rate and ongoing pregnancy rate occured with an endometrial thickness over 11 mm compared with below 7mm(p< 0.05, p< 0.005). however, no significant differences were noted in the implantation rate and abortion rate among the groups that classified according to their endmetrial thickness. The endometrial growth(${\Delta}$) from hCG administration day(DO) to D6 was greater in the women who achieved pregnancy than in the nonpregnant group(p< 0.01). There were no significant differences in serum estradiol levels, implantation rate, pregnancy rate, and abortion rate among the groups that classified according to the pattern of echogenesity of endometrium, however, significantly higher ongoing pregnancy rate was noted in group A, B compared with group C.(p< 0.0001, p< 0.001) These results suggest that there were no ultrasonographically detectable differences in the patterns of endometrial growth and development around the time of hCG administration in patients who conceive versus those that do not in IVF-ET.
Effects of A23187 on estradiol$-17^{\beta}$-induced vitellogenin (VTG) induction were electrophore-tically examined in primary hepatocyte cultures in rainbow trout. hepatocytes were predultured for 2 days and then estradiol-$17^{\beta}$(E2, $2{\times}10^{-6}$M) and calcium ionophore (A23187, $10^{-7)$~$10^{-5}$ M) were added to the incubation medium. The hepatocytes were cultured for 7 more days. In addition, effects of A23187 on $E_2$-primed VTG production were investigated for 7 days. The addition of A23187 ($10^{-7)$~$10^{-5}$M) to the incubation medium specifically reduced VTG production by hepatocytes in a concentration-dependent way. The addition of A23187 significantly reduced the rate of $E_2$-primed VTG production to 18% of the control (E2 only) on Day 7. However, $E_2$-primed VTG production was reduced to 47% of the control by withdrawal of $E_2$ from the incubation medium. Therefore, these results suggest that intracellualr sequestered calcium could regulate VTG synthesis at the translational and/or post-translational stage.
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