• Korean Journal of Animal Reproduction
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• v.21 no.4
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• pp.363-371
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• 1997

The present study was carried out to investigate the effect of gonadotropin administration on blood ovarian steroid hormone in angora rabbit. Mature angora rabbits were primed for superovulation with PMSG 100IU. Eighty hours later, the rabbit were induced to ovulate with HCG 100IU. In exp 1, blood progesterone and estradiol of superovulated does were measured by radiommunoassay. Blood progesterone concentration at 93, 99, 102 and 114 hours after HCG injection were 12.9$\pm$0.5, 34.8$\pm$5.1, 12.2$\pm$2.7 and 43.4$\pm$5.8ng/ml, respectively. Mean progesterone concentration of blood collected at 99 and 114 hours after HCG injection(p<0.05). However, mean blood estradiol concentration was not changed. In exp 2, superovulated does were unilaterally ovariectomized at 96 hours after HCG injection. Blood progesterone concentration was tend to be decreased after ovariectomy. Nosignificant changes in blood estradiol concentration was observed after ovariectomy. In exp 3, superovulated does were bilaterally ovariectomized at 96 hours after HCG injection Ovariectomized does were treated with progesterone. Blood progesterone level in the rabbits treated, twice daily, with 5mg progesterone after ovariectomy was similiar to that in the superovulated intact rabbits. Blood estradiol concentration of the rabbits after bilateral ovariectomy was beyond detection range. Blood progesterone concentration was significantly decreased to 7.6$\pm$3.0ng/ml wi thin 3 hours after ovriectomy(p<0.05). However, that value was increased to 34.8$\pm$8.2ng/ml by 5 mg progesterone treatment and this elevated level was significatnly decreased to 7.3$\pm$2.4ng/ml at 12 hours after progesterone administration(p<0.05).

• Korean Journal of Animal Reproduction
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• v.19 no.2
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• pp.141-145
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• 1995

The effect of splenectomy on the concentration of progesterone in pregnant wistar rats showing 4-day regular estrous cycles more than two cycles were investigated. The day after mating with the same male animal was designated day 0 of pregnancy. Splenectomy was conducted on day 0 (early-S), 6 (middle-S) and 13 (late-S) of pregnant rat, respectively. Blood sample were collected at day 1, 7, 14 and 21 of pregnancy. Concentraton of serum progesterone was determined by emzyme-linked immunosorbent assay (ELISA) using specific antibodies and emzyme conjugate(progesterone peroxidase labeled). In normal pregnant rats, serum progesterone concentrations were increased significantly (P<0.05) on day 7 and 14 of pregnancy compared with on day 1 of pregnancy and then dramatically decreased on day 21. However in early and middle splenectomized rats, progesterone concentrations were significantly (P<0.05) decreased on day 7 and 14 of pregnancy compared with same day of normal rats. These observations indicate that luteotropic action and steroidogenesis by corpus luteum of ovary may be regulated by splenocytes in rat.

• Korean Journal of Animal Reproduction
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• v.14 no.3
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• pp.157-164
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• 1990

Anti-progesterone monoclonal antibody injected intraperitonially as a single dose(100$\mu\textrm{g}$) 48hours post coitum(p.c.) almostly blocked pregnancy in ICR mice. The blocking rate of pregnancy in mice treated with antibody were decreased proportionally according to dose of antibody injected ; the rate were 60%, 57% and 17% as the antibody of 10$\mu\textrm{g}$, 50$\mu\textrm{g}$ and 100$\mu\textrm{g}$ were injected respectively. Blood serum progesterone concentration was greatly increased(21 times) after treatment(100$\mu\textrm{g}$), by virtue of high-affinity binding by antibody in circulation of non-pregnant mice in coompared with that of control group at day 10 p.c.. The concentration was about 1.6 times higher in the pregnant mice than in the non-pregnant mice in antibody treated group. In control group, the progesterone concentration was over 7 times higher in the pregnant mice than in non-pregnant mice at day 5 p.c..

• Clinical and Experimental Reproductive Medicine
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• v.19 no.1
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• pp.9-14
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• 1992

Platelet activating factor(PAF) has been reported to play a significant role in ovulation, establishment and maintnance of early pregnancy. The object of this study was to investigate the influence of PAF on progesterone secretion in rabbit by measurement of pheripheral blood concentration of progesterone. PAF had no effect on progesterone secretion and did not induce decidual reaction in nonovulatory rabbit. But 8th day of hCG induced pesudopregnant rabbit, PAF significantly increase progesterone secretion. Progesterone level was significantly increased at 0.5 and 4 hours after treatment with $10^{-8}$ M PAF on days 2, 4, 6, 8 of gestation as compared than those treated with normal saline. When PAF was injected 2 days after coitus, progesterone levels on days 4, 6, 10, 14 of gestation was significantly increased than those with saline injected group. These results suggest that PAF increase progesterone secretion from the hCG-primed ovary and during pregnancy in rabbit.

• Journal of Veterinary Clinics
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• v.14 no.2
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• pp.297-300
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• 1997

Artificial insemination with frozen canine semen using vaginal endoscope was performed in a two years old Golden Retriever to investigate the feasibility of this technique. The bitch was in her second estrus. Blood progesterone concentration was evaluated every two days to decide the timing of insemination since vaginal bleeding was observed. Insemination was performed twice in 48 hours interval on the fourth and sixth posterior to LH surge, respectively. The volume of frozen semen injected was 1.5 ml $(1{\times}10^{8}$ sperms/1ml of semen). The bitch was pregnant and she whelped a female pup on sixty one days after first insemination.

• The Journal of Korean Obstetrics and Gynecology
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• v.19 no.3
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• pp.95-107
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• 2006

Purpose : Salviae Miltiorrhizae Radix is a herb with an effect on extravasated blood and is widely used in gynecology. This study examine, the effects of Salviae Miltiorrhizae Radix on endometriosis. Methods : Rats with surgically induced endometriosis were administered Salviae Miltiorrhizae Radix for 40 days. The size of the ectopic uterine implants at the serosal wall and the concentration of progesterone, estradiol, TNF-${\alpha}$ and IL-2, 4, 6 and 10 in the blood were examined and compared with the control group. Results : The size of the ectopic uterine implants in the treated group was much smaller than that in the control group. The estradiol concentration was significantly lower in the experimental group than in the control group. The IL-10 level was significantly higher in the experimental group than in the control group. The TNF-${\alpha}$ level was lower in the experimental group than in the control group but the difference was not significant. The progesterone, IL-2, 4, 6 levels were similar in the experimental and control groups. Conclusion : These results indicate that Salviae Miltiorrhizae Radix reduces the size of ectopic uterine implants at the serosal wall and inhibits the growth of ectopic uterine implants. This suggests that Salviae Miltiorrhizae Radix is an effective treatment for endometriosis.

• Biomedical Science Letters
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• v.9 no.1
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• pp.29-36
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• 2003

Progesterone levels in the blood plasma or skim milk of cows are considered to be very useful indicator fur the detection of estrus cycle and early pregnancy diagnosis. During 13 to 14 days after estrus the level of progesterone in plasma or skim milk were not different between the inseminated arid non-inseminated cows. In the pregnant cows the peak level of progesterone reached on 14th day after artificial insemination (AI), but in the absence of conceptus the level declines after the 14th day slowly, and then very rapidly towards the basal level after the 17th day. This low level persists about 4 days, including those of estrus and ovulation a highly characteristic pattern which differs so markedly from that in the pregnant cows. Progesterone levels in blood plasma or skim milk can provided a reliable diagnosis of early pregnancy and monitoring ovarian activity in cows. The mean $\pm$ standard deviation of milk urea nitrogen(MUN) and protein concentration in the cows at 9 herds were 17.7$\pm$2.35 mg/dL and 3.2$\pm$0.17%, respectively. The days of nonpregnant after parturition was shorter in the cows in which the lower level of MUN than higher level of MUN concentration.

• Biomedical Science Letters
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• v.8 no.4
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• pp.235-244
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• 2002

This study was carried out to determine the blood and milk progesterone by enzyme-linked immunosorbent assay (ELISA), and milk urea nitrogen (MUN) in cows. MUN and protein concentration were determined using automated infared procedures. The optimum conditions of ELISA system was investigated including the first and second antibody titres, bound percent, and enzyme conjugate and also the factors on MUN and protein concentration by sampling procedures and addition of preservatives. Progesterone antibodies did not react to pregnenlone, testosterone, estrone, estradiol-l7$\beta$, aldosterone, cortisol, corticosterone and 11$\alpha$-dehydroxycortisone (DOC), but reacted with only progesterone. The intra and inter-assay coefficient of variation 4.5%, 6.1~9.4% when used of bovine serum. The morning, MUN concentration (17.6$\pm$2.8 mg/100 ml) in the 13 herds was similar to that of evening MUN concentration of the lactating cows from the same herd. A significant relationship between morning and evening milk samples of upper parameters was found r=0.93. Difference in MUN concentration with sampling procedures and using of preservatives were investigated.

• The Journal of Korean Obstetrics and Gynecology
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• v.20 no.2
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• pp.107-123
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• 2007

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.

• Archives of Pharmacal Research
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• v.12 no.4
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• pp.269-275
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• 1989

Early embryo development and implantation were arrested in ICR mice which were passively immunized with a mouse monoclonal progesterone amtibody given as a single intraperitoneal injection at 12 hrs or 60 hrs post coitum (p. c.). Unimplanted embryos were recovered from the reproductive tract of the antibody-treated mice and none of these progressed to the blastocyst stage. The most pronounced effect was an arrest of embryonic development at a stage prior to cavitation. The plasma progesterone concentration in the blood taken by carbiac puncture increased greatly after the treatment by virtue of high affinity binding by the antibody in circulation. The result showed that passive immunization against progesterone shortly after mating interfered with early hormone dependent steps which were essential for normal embryonic development.