• Asian-Australasian Journal of Animal Sciences
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• v.18 no.4
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• pp.470-474
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• 2005

The efficiency of a short-term treatment with an intravaginal device containing progesterone (CIDR) combined with pregnant mares' serum gonadotrophin (PMSG) and prostaglandin analogue ($PGF_{2\alpha}$) was evaluated for the induction of estrus, initiation of cyclic activity, and fertility in postpartum suckled yak cows. Seventy-five postpartum suckled yak cows were assigned to three treatments: (1) insertion of a CIDR intravaginal progesterone (1.9 g) (day 0), an administration of $PGF_{2\alpha}$ (0.2 mg i.m.) on day 6 and PMSG (1,000 IU i.m.) at the time of CIDR withdrawal on day 7 (CPP group, n=28); (2) an administration of $PGF_{2\alpha}$ (0.2 mg i.m.) on day 6 and PMSG (1,000 IU i.m.) on day 7 (PP group, n=21); (3) untreated animals served as the control (CG group, n=26). Seven yak bulls were placed in pastures with the cows for natural mating. Estrus rate in the CPP group (28/28) was higher (p<0.01) than in the PP group (6/21) and in the CG group (0/26) within 96 h after the end of treatment. The first service conception rate in the CPP group (21/28) was higher (p<0.01) compared with in the PP group (2/9) as judged by serum $P_4$ concentration $\geq$2.35 ng/ml on day 21 after breeding. It is concluded that a short-term progesterone treatment combined with PMSG and prostaglandin increased the proportion of yak cows that exhibited behavioral estrus with more synchronized estrus response and satisfactory conception rate in postpartum suckled yak cows.

• Journal of Pharmaceutical Investigation
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• v.34 no.2
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• pp.107-114
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• 2004

External lyogels containing prostaglandin $E_1$ ethyl ester $(PGE_1-EE)$, a prodrug of prostaglandin $E_1\;(PGE_1)$ as a therapeutic agent for erectile dysfunction, were formulated to overcome the aqueous instability and enhance the percutaneous absorption. Lyogels of $PGE_1-EE$ were prepared with ethanol (EtOH)/proplyene glycol (PG) cosolvent system as a vehicle, cineol as an enhancer, and hydroxypropylcellusose as a gelling agent. In vitro percutaneous absorption studies were performed to determine the rate of $PGE_1$ absorption through rat or hairless mouse skin. The permeability of $PGE_1-EE$ lyogel with enhancer was 16-fold greater than that of lyogel without enhancer. Cosolvent produced 9-fold increase in percutaneous absorption. Pharmacodynamic effects of lyogels were evaluated in mature male cats in terms of intracavernosal pressure (ICP). Lyogels containing 0.1 % of $PGE_1-EE$ showed higher ICP compared to intraurethral preparation of $PGE_1$ (1 %) and enhancer-free control lyogel. The shelf-life $(t_{10%})$ of lyogel at refrigerated condition $(4^{\circ}C)$ was calculated as 928 days, which is 4.2 times longer than that of control hydrogel. As a result, $PGE_1-EE$ was formulated successfully to a lyogel system with a selective enhancer and cosolvent system for the topical delivery of $PGE_1$.

• Journal of Embryo Transfer
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• v.31 no.1
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• pp.53-59
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• 2016

This study was to investigate effect of progesterone ($P_4$) on prostaglandin (PG) synthases and plasminogen activators (PAs) system in bovine endometrium during estrous cycle. Endometrium tissues were collected from bovine uterus on follicular and luteal phase and were incubated with culture medium containing 0 (Control), 0.2, 2, 20 and 200 ng/ml $P_4$ for 24 h. The $PGF_{2{\alpha}}$ synthase (PGFS), $PGE_2$ synthase (PGES), cyclooxygenase-2 (COX-2), urokinase PA (uPA), and PA inhibitors 1 (PAI-1) mRNA in bovine endometrium were analyzed using reverse transcription PCR and PA activity was measured using spectrophotometry. In results, COX-2 was higher at 2 ng/ml $P_4$ group than control group in luteal phase (p<0.05), but, it did not change in follicular phase. Contrastively, PGES was significantly increased in 2 ng/ml $P_4$ group compared to control group in follicular phase, but there were no significant differ among the treatments in luteal phase. uPA was no significant difference between $P_4$ treatment groups and control group in both of different phase. PAI-1 was decreased in 20 ng/ml $P_4$ group compared to control group in follicular phase (p<0.05). PA activity was decreased in 2 ng/ml $P_4$ group compared to other groups in follicular and luteal phase (p<0.05). In conclusion, we suggest that $P_4$ may influence to translation and post-translation process of PG production and PA activation in bovine endometrium.

• Reproductive and Developmental Biology
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• v.28 no.2
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• pp.89-94
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• 2004

This study was conducted to determine expression of acyl-CoA synthetase 4(ACS4), which is involved in converts arachidonic acid to postaglandins, in the mouse uterus during pregnancy. In arachidonic acid metabolism, acyl-CoA synthetase plays a key role in the esterification of free arachidonic acid into membrane phospholipids. Following its release by the action of calcium dependent phospholipases, free arachidonic acid is believed to be rapidly converted to arachidonoyl-CoA and reesterified into phospholipids in order to prevent excessive synthesis of prostaglandins. Here we demonstrate that ACS4 gene are differentially regulated in the peri-implatation mouse uterus. During the preimplantation period(days 0.5∼3.5), the ACS4 gene was expressed in the uterus until day 3.5 after which the expression was downregulated. The expression of cPLA2, COX1, and COX2 gene was similar to that of ACS4 gene in the preimplantation periods. However expression levels of COX1 gene show much variation on the various days of pregnancy examined. These data, suggest that ACS4 expression in preimplantation period is involved in initial attachment reaction with cPLA2, COX1, and COX2 gene.

• Korean Journal of Acupuncture
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• v.22 no.1
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• pp.85-93
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• 2005

목적 : 본 연구는 봉독 약침액이 BV2 microglial cell에서 LPS로 유발된 염증반응에 대한 억제효과를 관찰하고자 하였다. 방법 : 봉독 약침액의 항염증작용을 관찰하기 위하여 BV2 microglial cell에 봉독약침액을 1시간전에 농도별$(0.1,\;1,\;100\;{\mu}g/ml)$로 전처치한 후 LPS $(5\;{\mu}g/ml)$로 24시간 동안 처리하여 RT-PCR, western blot, $PGE_2$, assay, NO synthesis assay등의 방법으로 관찰하였다. 결과 : LPS 염증유발에 의해서 BV2 microglial cell에서 COX-2 및 NOS 발현이 증가하였고, 이 러한 증가는 prostaglandin E2 및 NO 합성을 증가시켰다. 이에 반하여 봉독약침액으로 전처치한 군에서는 COX-2 및 NOS 발현을 억제시켜 결과적으로 prostaglandin 합성 및 NO 합성을 억제시킴을 확인할 수 있었다. 또한 LPS 염증유발에 의해서 활성화된 NF-kB의 발현을 억제 시켰다. 결론 : 봉독약침 액은 LPS 염증유발에 의해서 증가된 prostaglandin E2 및 NO 합성을 억제시킴으로써 여러 가지 염종질환의 치료에 유효한 효과가 있을 것으로 사려 된다.

• Women's Health Nursing
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• v.15 no.2
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• pp.150-159
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• 2009

Purpose: The purpose of this study was to identify effects of Artemisia A. Smoke(Ssukjahun) on primary dysmenorrhea, Method: This study was a pretestposttest design with a nonequivalent control group. Data were collected from May 1, 2007 to May 27, 2008. A total of 40 women with dysmenorrhea participated in the study. Among them, 20 women were assigned to an experimental group and the other 20 to a control group. Artemisia A. Smoke(Ssukjahun) was provided daily for 4 days, starting 7 days prior to next expected menses in the experimental group. The instruments used in this study included MDQ (Moos' Menstrual Distress Questionnaire) by Kim (1995), Visual Analogue Scale by Keele (1948), and PG F2$\alpha$ by urine. Result: The results of this study are as follows; The experimental group was lower than the control group in the degree of menstrual distress (t=5.25, p=0.000), intensity of dysmenorrhea (t=7.71,p=0.000), and prostaglandin F2$\alpha$ levels (t=4.56, p=0.000). Conclusion: Artemisia A. Smoke (Ssukjahun) was proved as an effective nursing intervention to reduce dysmenorrhea in young women. Its convenience and accessibility may make it a useful intervention in nursing practice and education.

• Proceedings of the Ginseng society Conference
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• 1988.08a
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• pp.77-80
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• 1988

The effects of ginseng saponins and some phenolic acids on the in vitro biosynthesis of prostaglandins was examined in order to identify the role of some ginseng components on the regulaion of arachidonic acid metabolism. The productions of prostaglandin $E_2(PGE_2).$ prostaglandin $F_2{\alpha}(PGF_2{\alpha}).$ thromboxane $B_2(TxB_2)$ and 6-keto-prostaglandin $F_1{\alpha}(6-keto-PGF_1{\alpha})$ from $[^3H]-arachidonic$ acid were evaluated with rabbit kidney microsome. human platelet homogenate and bovine aortic microsome. The amounts of the total cyclooxy-genase products from arachidonic acid did't show significant changes in the presence of ginseng saponins. Panaxadiol. panaxatriol and all of the ginsenosides used in these experiments reduced the formation of $TxB_2.$ while increased the $6-keto-PGF_1{\alpha}$ production dose dependently. Ginseng saponins did't inhibit the ADP($10{\mu}M$) induced platelet aggregation. but sodium arachidonate (0.5 mM) induced platelet aggregation. but sodium arachidonate (0.5 mM) induced platelet aggregation was signiticantly inhibited. These findings suggest that ginseng saponins seem to playa role in the regulation of the arachidonate metabolism. probably by affecting the divergent biosynthetic pathway of prostaglandins from endoperoxide.

• Biomolecules & Therapeutics
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• v.16 no.2
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• pp.82-86
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• 2008

The fruits of Gardenia jasminoides Ellis have been previously reported to possess anti-inflammatory activity. In this study, the constituents including geniposide, geniposidic acid, genipin and crocin were evaluated for their effects on prostaglandin and NO production in an attempt to establish anti-inflammatory cellular mechanisms. Among the constituents tested, only genipin significantly inhibited cyclooxygenase-2-mediated $PGE_2$ and inducible nitric oxide synthase-mediated NO production from lipopolysaccharide-treated RAW 264.7 cells at 10-100 ${\mu}$M. Genipin also inhibited nuclear transcription factor-${\kappa}B$ activation. Moreover, genipin showed in vivo antiinflammatory activity on ${\lambda}$-carrageenan-induced paw edema in mice (10.4-29.9% inhibition at 20-100 mg/kg, i.p.). All of these results suggest that genipin may contribute to anti-inflammatory activity of the fruits of G. jasminoides and an inhibitory action on prostaglandin and NO production is, at least, the part of anti-inflammatory mechanism of genipin.

• Asian-Australasian Journal of Animal Sciences
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• v.3 no.4
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• pp.343-346
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• 1990

A study was conducted to determine the effect of prostaglandin $F_2$ alpha ($PGF_2$ alpha) on the reaction time and seminal characteristics of buffalo bulls. Semen was collected from three Murrah bulls in three periods: pre-treatment, treatment and post-treatment. During the treatment period each bull was administered 2 ml $PGF_2$ alpha (Synchrocept, Fenprostalene) im, 1 hour prior to semen collection. In the post-treatment, semen was collected 7 days after the last injection of $PGF_2$. Semen samples were evaluated immediately after collection. Pre-collection injection of $PGF_2$ alpha has no significant effect on reaction time, semen volume, percentage motility, sperm concentration and total number of sperms per ejaculate. Fluctuations in semen color and consistency were observed. There is a significant (p<0.05) increase in the mean percentage of normal spermatozoa during the treatment and post treatment periods. Likewise, administration of PG results into a significant (p<0.05) rise on the average percentage of live sperms but this effect was not manifested in the post-treatment period. Improvement in mass activity was observed during the treatment and post-treatment periods.

• Parasites, Hosts and Diseases
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• v.48 no.1
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• pp.15-21
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• 2010

Astrocytes are the most abundant cells in the central nervous system that play roles in maintaining the blood-brain-barrier and in neural injury, including cerebral malaria, a severe complication of Plasmodium falciparum infection. Prostaglandin (PG) $D_2$ is abundantly produced in the brain and regulates the sleep response. Moreover, $PGD_2$ is a potential factor derived from P. falciparum within erythrocytes. Heme oxygenase-1 (HO-1) is catalyzing enzyme in heme breakdown process to release iron, carbon monoxide, and biliverdin/bilirubin, and may influence iron supply to the P. falciparum parasites. Here, we showed that treatment of a human astrocyte cell line, CCF-STTG1, with $PGD_2$ significantly increased the expression levels of HO-1 mRNA by RT-PCR. Western blot analysis showed that $PGD_2$ treatment increased the level of HO-1 protein, in a dose- and time-dependent manner. Thus, $PGD_2$ may be involved in the pathogenesis of cerebral malaria by inducing HO-1 expression in malaria patients.