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1.
J Dairy Sci ; 103(2): 2006-2018, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31785879

RESUMO

One strategy for improving fertility in cattle is administration of GnRH or human chorionic gonadotropin (hCG) during the luteal phase, which increases progesterone (P4) secretion and delays luteolysis. To provide an overview of how GnRH or hCG treatment between 4 and 15 d after artificial insemination (AI) improves pregnancy per AI (P/AI) in cows, a meta-analysis was performed on 107 different trials from 52 publications. Data from 18,082 treated cows and 18,385 untreated controls were meta-analyzed. The meta-analysis explained the relative risk for P/AI with GnRH or hCG treatment under various circumstances. The results did not show any difference in P/AI between cows treated with hCG and cows treated with GnRH. Compared with no treatment, treatment with GnRH or hCG improved the chances of P/AI in cows with very poor (<30%) and poor (30.1 to 45%) fertility, whereas treatment did not benefit cows with very good fertility (>60.1%). Moreover, treatment with GnRH and hCG improved the chances of P/AI in primiparous cows. The improvement was much better in primiparous cows with very low fertility. Treatment with buserelin at a dose above 10 µg and with hCG at a dose above 2,500 IU was associated with increased chances of P/AI compared with lower doses. Treatment with GnRH 10 d after AI was also associated with increased chances of P/AI compared with earlier treatment. The present meta-analysis showed that the use of GnRH and hCG after AI should be focused on cows expected to have low or moderate fertility. Day and dose of treatment have to be considered as well.


Assuntos
Busserrelina/administração & dosagem , Bovinos/fisiologia , Gonadotropina Coriônica/administração & dosagem , Fertilidade/efeitos dos fármacos , Hormônio Liberador de Gonadotropina/administração & dosagem , Animais , Indústria de Laticínios , Feminino , Humanos , Inseminação Artificial/veterinária , Fase Luteal , Luteólise/efeitos dos fármacos , Gravidez , Progesterona/metabolismo , Fatores de Tempo
2.
Theriogenology ; 141: 168-172, 2020 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-31542520

RESUMO

This study evaluated embryo production after superovulation (SO) with a reduced number of FSH applications and increased eCG dose in 26 Bos taurus × Bos indicus donors. On Day 0, donors received an intravaginal device (CIDR) with 1.9 g of progesterone plus 2.5 mg of estradiol benzoate and 50 mg of progesterone via IM. On Day 4, donors were randomly allotted to one of three SO treatments: 1) 455 IU of Folltropin +400 IU of eCG (n = 9), 2) 350 IU of Folltropin +600 IU of eCG (n = 9), and 3) 500 IU of Pluset + 600 IU of eCG (n = 8). In treatment 455 IU of Folltropin +400 IU of eCG, donors received eight IM Folltropin injections in decreasing dose 12 h apart from Day 4 to Day 7. On Day 6, at the same time as the Folltropin, donors received via IM 25 mg of dinoprost tromethamine (PGF2a). On Day 7, the CIDR was removed, and together with the Folltropin, donors received 200 IU of eCG via IM. In treatment 350 IU of Folltropin +600 IU of eCG, donors received four IM Folltropin injections in decreasing dose 12 h apart on Days 4 and 5. On Day 6, donors received via IM 600 IU of eCG in the morning and two doses of 25 mg of PGF2a 12 h apart. On Day 7, the CIDR was removed. Donors from treatment 500 IU of Pluset +600 IU of eCG received four IM Pluset injections in decreasing dose 12 h apart on Days 4 and 5. On Day 6, donors received via IM 600 IU of eCG in the morning and two doses of 25 mg of PGF2a 12 h apart. On Day 7, the CIDR was removed. In the morning of Day 8, donors from the three treatments received 0.25 mg of GnRH via IM. Artificial insemination was performed on Day 8 (pm) and Day 9 (am). Embryos were collected on Day 15. Variables evaluated were number of CL before embryo collection, number of structures recovered, transferable embryos, degenerate embryos and unfertilized oocytes, recovery rate, and viability rate. There was no difference in any variable among treatments (P > 0.05). In conclusion, replacement of four Folltropin or Pluset injections from a conventional eight FSH-injection SO protocol, by a single injection of 600 IU of eCG, is a good alternative to reduce donor handling without decreasing yield of transferable embryos.


Assuntos
Bovinos/embriologia , Gonadotropina Coriônica/farmacologia , Hormônio Foliculoestimulante/farmacologia , Superovulação/efeitos dos fármacos , Animais , Gonadotropina Coriônica/administração & dosagem , Técnicas de Cultura Embrionária , Feminino , Fertilização In Vitro , Hormônio Foliculoestimulante/administração & dosagem , Doadores de Tecidos
3.
Anim Reprod Sci ; 211: 106209, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31785631

RESUMO

In seasonally anestrous goat does, ovulations can be induced by combining a treatment regimen including progestagen, eCG and prostaglandins. Nonetheless, ovulations occur only once and then does return to a seasonally anestrous state. This study was performed to determine whether the presence of a sexually active buck can stimulate a second ovulation after induced luteolysis using prostaglandins following the first ovulation. Three groups of seasonally anestrous does were treated to induce ovulations using an intra-vaginally inserted sponge containing a progestin combined with eCG and prostaglandin administrations. Goats that had ovulations were treated with a prostaglandin 11 days after progestin sponge removal. After the prostaglandin injection, does continued to be isolated from bucks (n = 8), were penned with a control buck (n = 9), or were penned with a sexually active buck (n = 10). The proportion of goats having ovulations after imposing the ovulation-induction protocol was greater than 80% and did not differ among treatment groups (P >  0.05). The proportion of does having ovulations after injecting prostaglandins was greater when does were penned with a sexually active buck (8/10) than does penned with a control buck (0/9) or that were isolated from bucks (0/8; P < 0.05). It is concluded that in seasonally anestrous goat does induced to have ovulations using a hormonal treatment regimen, the presence of a sexually active buck can induce a second ovulation when there is an induced luteolysis.


Assuntos
Gonadotropina Coriônica/farmacologia , Acetato de Fluorogestona/farmacologia , Cabras/fisiologia , Ovulação/fisiologia , Prostaglandinas/farmacologia , Estações do Ano , Animais , Gonadotropina Coriônica/administração & dosagem , Feminino , Acetato de Fluorogestona/administração & dosagem , Masculino , Ovulação/efeitos dos fármacos , Indução da Ovulação/veterinária , Fotoperíodo , Prostaglandinas/administração & dosagem , Comportamento Sexual Animal
4.
Anim Reprod Sci ; 211: 106234, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31785632

RESUMO

Two experiments evaluated the effects of injectable trace minerals (ITM) administered 11 d before artificial insemination (AI) on body weight (BW), body condition score (BCS), ovarian structures, pregnancy rate, and antioxidant response of Nellore cows. In Experiment 1, 20 multiparous cows were assigned to one of two treatments: subcutaneous injection (6 mL/cow; 11 d before AI) of saline solution or ITM (60, 10, 5, and 15 mg/mL of Zn, Mn, Se and Cu, respectively) and BW, BCS, ovarian structures and blood were evaluated. In Experiment 2, 1,144 multiparous cows were assigned to same treatments described in Experiment 1 and pregnancy rate on d 30 was evaluated. In Experiment 1, ITM did not affect (P ≥  0.23) BW, dominant follicle size, ovulation rate, and plasma concentrations of haptoglobin, ceruloplasmin and progesterone (P4). The ITM treatment tended to increase (P =  0.06) cow BCS and reduce (P ≤  0.06) corpus luteum (CL) diameter and volume. Furthermore, ITM treatment tended to increase (P =  0.06) plasma concentrations of SOD and increased (P =  0.007) GSH-Px compared with saline injection. In Experiment 2, ITM treatment tended (P =  0.06) to increase pregnancy rate of cows with BCS ≤ 5.0 but not cows with BCS > 5.0 (P =  0.99). The ITM treatment did not alter BW, plasma P4, and acute phase response, but enhanced plasma concentrations of antioxidant enzymes, and tended to enhance BCS and pregnancy rates to AI of cows with BCS ≤ 5.0, even though there was a smaller corpus luteum size.


Assuntos
Bovinos , Inseminação Artificial/veterinária , Oligoelementos/administração & dosagem , Animais , Gonadotropina Coriônica/administração & dosagem , Gonadotropina Coriônica/farmacologia , Contraceptivos Hormonais/administração & dosagem , Contraceptivos Hormonais/farmacologia , Estradiol/administração & dosagem , Estradiol/análogos & derivados , Estradiol/farmacologia , Feminino , Fármacos para a Fertilidade Feminina/administração & dosagem , Fármacos para a Fertilidade Feminina/farmacologia , Gravidez , Progesterona/administração & dosagem , Progesterona/farmacologia , Reprodução/efeitos dos fármacos , Substâncias para o Controle da Reprodução/administração & dosagem , Substâncias para o Controle da Reprodução/farmacologia
5.
Eur J Obstet Gynecol Reprod Biol ; 243: 133-138, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31704529

RESUMO

OBJECTIVE: To investigate whether intrauterine perfusion of hCG before embryo transfer (ET) is effective in women experienced two or more implantation failures. STUDY DESIGN: Systematic review and meta-analysis. In the current meta-analysis, Pubmed, EMBASE and The Cochrane Library were searched for trials which compared the efficacy of intrauterine perfusion of hCG with no perfusion of hCG in women undergoing in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), or frozen embryo transfer (FET) before ET. The primary outcomes are the clinical pregnancy rate (CPR) and live birth rate (LBR). RESULTS: Six trials consisted of 1432 women were eligible for quantitative analysis. CPR (including 6 trials consisted of 1432 women) and LBR (including 3 trials consisted of 870 women) were significantly improved in the hCG group compared to the control group, with a CPR of 41.8 % vs. 31.2 % (RR 1.30, 95 % CI 1.14∼1.50, P < .001), an LBR of 27.8 % vs. 18.0 % (RR 1.52, 95 % CI 1.18∼1.96, P = .001). CONCLUSION: Intrauterine perfusion of hCG is effective in improving clinical pregnancy rate and live birth rate in women who experienced two or more implantation failures, which might provide a potential therapeutical intervention for recurrent implantation failure (RIF). Although promising, further evidence from multicenter, randomized controlled trials are needed to confirm the conclusion from the current meta-analysis.


Assuntos
Gonadotropina Coriônica/administração & dosagem , Transferência Embrionária/métodos , Nascimento Vivo , Taxa de Gravidez , Substâncias para o Controle da Reprodução/administração & dosagem , Implantação do Embrião , Feminino , Fertilização In Vitro/métodos , Humanos , Gravidez , Falha de Tratamento , Resultado do Tratamento
6.
Anim Sci J ; 90(12): 1523-1529, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31646735

RESUMO

We aimed to define whether embryo collection carried out after pseudopregnancy was of similar outcome and quality as after artificial abortion. To induce pseudopregnancy, 30 gilts or sows were given 20 mg intramuscular estradiol dipropionate (EDP) 10-11 days after the onset of estrus. Ten additional pigs were inseminated artificially at natural estrus as a control group. Prostaglandin F2α (PGF2α ) was administered twice with a 24 hr interval beginning 15, 20, or 25 days after EDP-treatment (n = 10 per group) or between 23 and 39 days after artificial insemination in control pigs. Following this, all pigs were given 1,000 IU equine chorionic gonadotropin and 500 IU human chorionic gonadotropin (hCG) and then inseminated. Embryos were recovered 6 or 7 days after hCG treatment and outcome was recorded. There was no significant difference in the number of normal embryos collected from the pigs with PGF2α initiated at different time points or from the control group. Embryonic developmental stages 7 days after hCG treatment also did not differ among groups. These results indicate that the use of EDP to induce pseudopregnancy, followed by PGF2α administration to synchronize estrus for subsequent embryo harvest, is a suitable alternative to the artificial abortion method.


Assuntos
Estradiol/análogos & derivados , Estro/efeitos dos fármacos , Pseudogravidez , Criação de Embriões para Pesquisa/métodos , Sus scrofa , Animais , Gonadotropina Coriônica/administração & dosagem , Embrião de Mamíferos , Estradiol/administração & dosagem , Estradiol/farmacologia , Feminino , Prostaglandinas F/administração & dosagem , Prostaglandinas F/farmacocinética
7.
Proc Natl Acad Sci U S A ; 116(41): 20267-20273, 2019 10 08.
Artigo em Inglês | MEDLINE | ID: mdl-31570579

RESUMO

The ovulatory homolog model of female orgasm posits that the neuro-endocrine mechanisms underlying female orgasm evolved from and are homologous to the mechanisms mediating copulation-induced ovulation in some mammals. This model predicts that pharmacological agents that affect human orgasm, such as fluoxetine, should also affect ovulation in animals with copulation-induced ovulation, such as rabbits. We tested this prediction by treating rabbits with daily doses of fluoxetine for 2 wk and found that fluoxetine treatment reduces the number of ovulations postcopulation by 30%. In a second experiment we tested whether this result was mediated by an effect on the brain or via peripheral serotonin functions. We treated animals with fluoxetine and induced ovulation with a single injection of human chorionic gonadotropin. In this experiment ovulation rate was nominally reduced by only 8%, which is statistically not significant. We conclude that the effect of fluoxetine on copulation-induced ovulation rate supports the ovulatory homolog model of female orgasm, suggesting that female orgasm has very deep evolutionary roots among the early eutherian mammals.


Assuntos
Evolução Biológica , Gonadotropina Coriônica/farmacologia , Fluoxetina/farmacologia , Ovulação/efeitos dos fármacos , Animais , Gonadotropina Coriônica/administração & dosagem , Copulação/fisiologia , Feminino , Fluoxetina/administração & dosagem , Masculino , Ovulação/fisiologia , Coelhos , Substâncias para o Controle da Reprodução/administração & dosagem , Substâncias para o Controle da Reprodução/farmacologia , Inibidores de Captação de Serotonina/administração & dosagem , Inibidores de Captação de Serotonina/farmacologia
8.
In Vivo ; 33(6): 1737-1749, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31662498

RESUMO

BACKGROUND/AIM: Studies on the impact of intrauterine human Chorionic Gonadotropin (hCG) administration in order to improve the In Vitro Fertilization (IVF) outcome have yielded conflicting results. The aim of the present systematic review and meta-analysis is to investigate whether timing of intrauterine hCG administration prior to embryo transfer affects its efficiency. MATERIALS AND METHODS: A systematic search of the literature on Pubmed/Medline, Embase and Cochrane databases was performed. Only Randomized Control Trials were included in this meta-analysis. RESULTS: Live birth rates were not improved following hCG administration (RR=1.13, 95%CI=0.88-1.46, p=0.34) in the pooled results. Combined live birth and ongoing pregnancy rates were borderline statistically significant following hCG administration (RR=1.27, 95%CI=1.00-1.62, p=0.05). Following subgroup analysis regarding live birth and ongoing pregnancy rates, only the 5-12 minutes prior to the embryo transfer group reported a statistically significant improvement. CONCLUSION: Intrauterine infusion of hCG within an IVF-Intracytoplasmic Sperm Injection (ICSI) cycle improves outcome only when administered 5-12 min prior to embryo transfer.


Assuntos
Gonadotropina Coriônica/administração & dosagem , Infertilidade Feminina/tratamento farmacológico , Animais , Transferência Embrionária/métodos , Feminino , Fertilização In Vitro/métodos , Humanos , Nascimento Vivo , Gravidez , Taxa de Gravidez
9.
J Dermatol ; 46(11): 1042-1045, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31489686

RESUMO

Pharmacological regimens with multiple medications are being used in fertility treatments. Herein, we report a case of a 40-year-old Japanese woman who developed Stevens-Johnson syndrome (SJS) with a severe ocular complication during fertility treatment. Despite early multimodal interventions, including methylprednisolone pulse therapy and plasma exchange, her ocular complications persisted for more than a year. The four drugs administered in this case (cabergoline, medroxyprogesterone acetate, clomiphene, and intravenous human chorionic gonadotropin) have never been reported to induce SJS. Based on this case, we suggest that obstetricians, gynecologists, and dermatologists should be aware of fertility treatment-induced severe drug eruptions.


Assuntos
Oftalmopatias/induzido quimicamente , Fármacos para a Fertilidade Feminina/efeitos adversos , Infertilidade Feminina/tratamento farmacológico , Síndrome de Stevens-Johnson/etiologia , Adulto , Anti-Inflamatórios/administração & dosagem , Cabergolina/administração & dosagem , Cabergolina/efeitos adversos , Cefdinir/administração & dosagem , Gonadotropina Coriônica/administração & dosagem , Gonadotropina Coriônica/efeitos adversos , Clomifeno/administração & dosagem , Clomifeno/efeitos adversos , Quimioterapia Combinada/efeitos adversos , Oftalmopatias/terapia , Feminino , Fármacos para a Fertilidade Feminina/uso terapêutico , Glucocorticoides/administração & dosagem , Humanos , Acetato de Medroxiprogesterona/administração & dosagem , Acetato de Medroxiprogesterona/efeitos adversos , Troca Plasmática , Síndrome de Stevens-Johnson/terapia
10.
Reprod Biol Endocrinol ; 17(1): 74, 2019 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-31488148

RESUMO

BACKGROUND: There is much value in identifying non-invasive ways of measuring endometrial receptivity, as it has the potential to improve outcomes following in vitro fertilization (IVF). It has been suggested that endometrial echogenicity on the day of hCG administration was a good marker of endometrial receptivity. In the daily practice, we notice that patients with non-homogeneous hyperechoic endometrium on the embryo transfer day usually have lower pregnancy rates. We therefore extended the research onward transformation of echo pattern after hCG trigger to analyze the relationship between endometrial echogenicity transformation and IVF outcomes. METHODS: A total of 146 infertile women undergoing their first IVF cycle were recruited in the prospective cohort study from August 2017 through August 2018. A series of endometrial echo pattern monitoring was carried out in these patients after hCG trigger: hCG day, from 1 through 3 days after ovum pick-up (OPU + 1, OPU + 2, OPU + 3). RESULTS: The endometrial echogenicity value was calculated as the ratio of the hyperechogenic endometrial area over the whole endometrial area. Clinical pregnancy rate and embryo implantation rate had positive relationship with echogenicity value. The ROC curve analysis of endometrial echogenicity showed the area under curve was greatest on the second day after oocyte retrieval (OPU + 1, 2, 3 were 0.738, 0.765, 0.714 respectively) versus pregnancy. Endometrial echogenicity value on OPU + 2 had a higher predictive efficiency, and the cutoff value was 76.5%. The sensitivity was 61.3% and specificity was 82.0%. When putting the cut-off at <60%, the sensitivity was 93.8% and the specificity was 23.1%. CONCLUSIONS: The endometrial echogenicity value on OPU + 2 was recommended to evaluate endometrial receptivity. It seemed appropriate for clinicians to provide a 'freeze all' IVF cycle and transfer in a subsequent frozen-thawed embryos cycle when echogenicity value <60% on OPU + 2. TRIAL REGISTRATION: The registration number was ChiCTR-OOC-17012214 and the registration date was August 1st, 2017.


Assuntos
Gonadotropina Coriônica/administração & dosagem , Transferência Embrionária/métodos , Endométrio/diagnóstico por imagem , Fertilização In Vitro/métodos , Infertilidade Feminina/terapia , Adulto , Implantação do Embrião , Endométrio/fisiologia , Feminino , Humanos , Processamento de Imagem Assistida por Computador/métodos , Gravidez , Resultado da Gravidez , Taxa de Gravidez , Estudos Prospectivos , Ultrassonografia/métodos
11.
Reprod Biol ; 19(3): 245-254, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31383475

RESUMO

Granulosa Cells (GCs) are sensitive to excessive production of reactive oxygen species (ROS). Quercetin (QUR) is a free radical scavenger which can alleviate oxidative stress through nuclear factor (erythroid-derived 2)-like 2 (Nrf2)/antioxidant response element (ARE) pathway and thioredoxin (Trx) system. We aimed to explore the probable protective role of QUR on cultured human GCs treated with hydrogen peroxide (H2O2) as an inducer of oxidative stress. MTT assay was applied for evaluating the cell cytotoxicity of QUR and H2O2. The rate of apoptotic cells and intracellular ROS generation were determined by Annexin V-FITC/PI staining and 2'-7'-dichlorodihydrofluorescein diacetate fluorescent probes (DCFH-DA), respectively. Quantitative real-time polymerase chain reaction (qRT-PCR) analysis and western blot analysis were used to evaluate the gene and protein expression of Nrf2 and kelch-like ech-associated protein 1 (Keap1)1. The Nrf2 and Trx activities were measured by Enzyme-linked Immunosorbent Assay (ELISA). The results indicated that QUR pretreatment can decrease ROS production and apoptosis induced by H2O2. In addition, QUR increased Nrf2 gene and protein expression, as well as its nuclear translocation. Moreover, in QUR-treated group, a lower level of Keap1 protein was observed, which was not reported as significant. The results also indicated a significant correlation between the expression of Nrf2 and Keap1 in QUR-treated group. Further, QUR protected GCs from oxidative stress by increasing Trx gene expression and activity. This study suggests that QUR as a supplementary factor may protect GCs from oxidative stress in diseases related to this condition.


Assuntos
Células da Granulosa/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Quercetina/farmacologia , Tiorredoxinas/metabolismo , Adulto , Antioxidantes/farmacologia , Apoptose/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Células Cultivadas , Gonadotropina Coriônica/administração & dosagem , Gonadotropina Coriônica/farmacologia , Estrogênios/sangue , Feminino , Fármacos para a Fertilidade Feminina/administração & dosagem , Fármacos para a Fertilidade Feminina/farmacologia , Hormônio Foliculoestimulante Humano/administração & dosagem , Hormônio Foliculoestimulante Humano/farmacologia , Hormônio Liberador de Gonadotropina/administração & dosagem , Hormônio Liberador de Gonadotropina/análogos & derivados , Hormônio Liberador de Gonadotropina/farmacologia , Humanos , Estresse Oxidativo/fisiologia , Espécies Reativas de Oxigênio , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/farmacologia , Tiorredoxinas/genética , Adulto Jovem
12.
Anim Reprod Sci ; 208: 106108, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31405462

RESUMO

The objective of this study was to evaluate the effects of plasma progesterone (P4) concentrations during eCG-ovarian follicular superstimulatory treatment performed in early luteal phase and estradiol concentrations during peri-ovulatory period on ovarian response, number and embryo quality. On Day -2, females (n = 75) having a follicle ≥7 mm were treated with GnRH to induce ovulation. On Day 0, females that had ovulations (n = 54) were treated with 1000 IU eCG and were assigned to one of two treatments: (1) intravaginal device (ID) containing 0.5 g P4 (P4 group) and (2) no ID (Control group). On Day 5, females were administered PGF2α and the ID was removed. On Day 7 and 8, females were mated and embryo recovery was performed 7 or 8 days later. Blood samples were collected from Day 0 to 9. Number (± SD) of follicles ≥7 mm on day of mating was greater (P =  0.04) in the control (9.7 ± 4.2) than P4-treated (6.7 ±â€¯4.9) group; number of corpora lutea did not differ (5.5 ±â€¯3.1 and 5.2 ±â€¯3.4 respectively). Ovulation rate was greater (P <  0.01) in the P4-group (77.4%; 130/168) than control group (53.3%; 135/253). Number of embryos with an excellent grade (grade 1) tended to be greater (P =  0.07) in the P4-group (82.4%; 42/51) than control group (65.4%; 36/55). It was concluded that supplementation with exogenous P4 during eCG treatment in early luteal phase inhibits excessive follicular growth, increases ovulation rate and improves embryo quality.


Assuntos
Camelídeos Americanos/fisiologia , Gonadotropina Coriônica/farmacologia , Corpo Lúteo/fisiologia , Progesterona/farmacologia , Superovulação/efeitos dos fármacos , Animais , Camelídeos Americanos/sangue , Gonadotropina Coriônica/administração & dosagem , Corpo Lúteo/efeitos dos fármacos , Feminino , Progestinas/farmacologia , Substâncias para o Controle da Reprodução/farmacologia
13.
Anim Reprod Sci ; 208: 106112, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31405481

RESUMO

The establishment of protocols for the control of the ovarian function of collared peccaries is recommended for the development of assisted reproductive techniques. The goals were to (1) compare a gonadotropin combination with prostaglandin analogue to synchronize timing of onset of estrus among animals, and (2) elucidate the effects of the most desirable protocol for performing an artificial insemination study and macroscopic evaluation of the ovaries. Three of five females treated with a double administration of 120 µg prostaglandin (cloprostenol) at a 9-day interval expressed symptoms of estrus 9 days after the second injection. One female presented estrus after 6 days, whereas other did not respond to the treatment. All females (5/5) treated with a single dose containing 400 IU eCG and 200 IU hCG manifested estrus 6 days after the hormone injection. In a second experiment, ten females that were estrous synchronized using eCG/hCG, were artificially inseminated with fresh semen and monitored for pregnancy every 30 days. Although there was no detection of fetuses by ultrasonic examination, seven females (7/10) had greater than basal progesterone values for 60 days after the treatments were imposed. Ovaries from two females treated with eCG/hCG were collected 6 days post-injection. There was confirmation of an ovarian stimulation as a result of the presence of 88 and 25 antral follicles, as well as three and eight hemorrhagic structures in ovaries of each female, respectively. It, therefore, is proposed that eCG/hCG can be used as an effective treatment for estrous synchronization in collared peccaries.


Assuntos
Artiodáctilos/fisiologia , Gonadotropina Coriônica/farmacologia , Sincronização do Estro/métodos , Animais , Gonadotropina Coriônica/administração & dosagem , Cloprostenol/farmacologia , Relação Dose-Resposta a Droga , Feminino
14.
Mar Biotechnol (NY) ; 21(5): 697-706, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31372794

RESUMO

The availability of sexually mature fish often dictates the success of its captive breeding. In this study, we induced reproductive development in juvenile protogynous tiger grouper through oral administration of a plasmid (p) containing an engineered follicle-stimulating hormone (FSH). An expression construct (pcDNA3.1) was designed to express a single-chain FSH consisting of giant grouper FSH ß-subunit and glycoprotein subunit-α (CGα), linked by the carboxy-terminal peptide (CTP) sequence from the human chorionic gonadotropin (hCG). Single oral delivery of pFSH encapsulated in liposome and chitosan to tiger grouper yielded a significant increase in plasma FSH protein level after 4 days. Weekly pFSH feeding of juvenile tiger groupers for 8 weeks stimulated ovarian development as indicated by a significant increase in oocyte diameter and progression of oocytes to cortical alveolar stage. As the pFSH treatment progressed from 20 to 38 weeks, female to male sex change was initiated, characterized by oocyte regression, proliferation of spermatogonial cells, and occurrence of spermatogenic cysts. It was also associated with significantly lower mRNA expression of steroidogenic genes (cyp11b, cyp19a1a, and foxl2) and basal plasma levels of sex steroid hormones 17ß-estradiol (E2), testosterone (T), and 11-ketotestosterone (11KT). Results suggest that pFSH stimulates ovarian development up to cortical alveolar stage and then initiates sex change in tiger grouper. These findings significantly contribute to our knowledge on the role of FSH in the development of protogynous hermaphroditic fish. This study is the first to demonstrate induction of reproductive development in fish through oral delivery of plasmid gonadotropin.


Assuntos
Gonadotropina Coriônica/genética , Hormônio Foliculoestimulante/genética , Gônadas/efeitos dos fármacos , Organismos Hermafroditas/efeitos dos fármacos , Perciformes/genética , Processos de Determinação Sexual/efeitos dos fármacos , Diferenciação Sexual/efeitos dos fármacos , Administração Oral , Animais , Quitosana/química , Gonadotropina Coriônica/administração & dosagem , Gonadotropina Coriônica/biossíntese , Composição de Medicamentos , Feminino , Proteínas de Peixes/biossíntese , Proteínas de Peixes/genética , Hormônio Foliculoestimulante/administração & dosagem , Hormônio Foliculoestimulante/biossíntese , Hormônios Esteroides Gonadais/biossíntese , Hormônios Esteroides Gonadais/genética , Gônadas/crescimento & desenvolvimento , Gônadas/metabolismo , Organismos Hermafroditas/genética , Humanos , Lipossomos/administração & dosagem , Lipossomos/química , Masculino , Oogênese/efeitos dos fármacos , Oogênese/genética , Perciformes/crescimento & desenvolvimento , Perciformes/metabolismo , Plasmídeos/química , Plasmídeos/metabolismo , Proteínas Recombinantes de Fusão/administração & dosagem , Proteínas Recombinantes de Fusão/biossíntese , Proteínas Recombinantes de Fusão/genética , Pré-Seleção do Sexo/métodos , Espermatogênese/efeitos dos fármacos , Espermatogênese/genética
15.
Gynecol Obstet Fertil Senol ; 47(10): 739-746, 2019 10.
Artigo em Francês | MEDLINE | ID: mdl-31336184

RESUMO

OBJECTIVES: The objective of our study is to evaluate the impact of luteal phase support by hCG in intrauterine inseminations preceded by ovarian gonadotropin stimulation. METHODS: A retrospective study was conducted at the CHU of Nice between March 1, 2016 and October 31, 2017. During this period, 300 intrauterine inseminations were included in data analysis. Ovarian stimulation was performed by gonadotropins and a GnRH antagonist was added, if needed. Following a modification of standard operative procedure in the department, patients who performed an intrauterine insemination from December 1, 2016 received luteal phase support with two injections of hCG 1500 IU, performed at three days of interval. Pregnancy and ovarian hyperstimulation syndrome were the primary and secondary study endpoints, respectively. RESULTS: Out of 300 inseminations included in the analysis, 144 were performed with luteal phase support and 156 without support. No statistically significant difference in pregnancy rate was observed between these two groups (19.4% of pregnancy in the luteal phase support group and 15.38% in the group without luteal phase support, P=0.353). No ovarian hyperstimulation syndrome occurred over the course of the study. CONCLUSION: Our study shows a slight improvement of pregnancy rate in the group subjected to luteal phase support by hCG after intrauterine insemination, but the benefit was not significant. A randomised prospective study based on a large cohort could help to assess the effect of luteal phase support during intrauterine inseminations.


Assuntos
Gonadotropina Coriônica/administração & dosagem , Inseminação Artificial/métodos , Fase Luteal/efeitos dos fármacos , Adulto , Feminino , Hormônio Foliculoestimulante/administração & dosagem , França , Hormônio Liberador de Gonadotropina/antagonistas & inibidores , Humanos , Infertilidade/terapia , Fase Luteal/fisiologia , Masculino , Indução da Ovulação/métodos , Gravidez , Taxa de Gravidez , Estudos Retrospectivos
16.
Gynecol Obstet Fertil Senol ; 47(7-8): 568-573, 2019.
Artigo em Francês | MEDLINE | ID: mdl-31271894

RESUMO

OBJECTIVE: This study investigates dual trigger with GnRHa and hCG as a potential treatment in patients with a history of ≥25 % immature oocytes retrieved in IVF/ICSI cycles. METHODS: This is a retrospective case-control study performed between October 2008 and December 2017. Forty-seven patients who experienced high oocyte immaturity rate (≥25 %) during their first IVF/ICSI cycle (analyzed as control group) and received a dual trigger for their subsequent cycle, were involved. During dual trigger cycles, patients received antagonist protocol and ovulation triggering using triptorelin 0.2mg and hCG. Primary endpoint was maturation rate (MR). Secondary endpoints were fertilization, D2 top quality embryo (TQE) rates, clinical pregnancy rate per fresh embryo transfer and cumulative clinical pregnancy rate per couple. RESULTS: A significant increase in MR was achieved in case of dual trigger (71.0 %) when compared to control group (47.8 %; P<0.0001). Moreover, cumulative clinical pregnancy rate yielded 46.8 % in dual trigger group, which was statistically higher than 27.6 % obtained in control group (P=0.05). However, fertilization, D2 TQE rates and clinical pregnancy rates/transfer were statistically similar when compared between the two groups. CONCLUSION: Dual trigger seems efficient for managing patients with high oocyte immaturity rate.


Assuntos
Gonadotropina Coriônica/administração & dosagem , Hormônio Liberador de Gonadotropina/agonistas , Oócitos/crescimento & desenvolvimento , Pamoato de Triptorrelina/administração & dosagem , Adulto , Estudos de Casos e Controles , Feminino , Fertilização In Vitro/métodos , Humanos , Oócitos/efeitos dos fármacos , Estudos Retrospectivos , Injeções de Esperma Intracitoplásmicas/métodos
17.
Fertil Steril ; 112(1): 89-97.e1, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31277770

RESUMO

OBJECTIVE: To evaluate whether intrauterine injection of hCG before embryo transfer can improve IVF-ET outcomes. DESIGN: Meta-analysis. SETTING: Not applicable. PATIENT(S): Infertile women who underwent IVF-ET and received an intrauterine injection of hCG before ET. INTERVENTION(S): Infertile women treated with or without intrauterine hCG injection before ET. MAIN OUTCOME MEASURE(S): The primary outcomes were live birth rate (LBR), ongoing pregnancy rate (OPR), and clinical pregnancy rate (CPR), and the secondary outcomes were implantation rate (IR) and miscarriage rate (MR). Odds ratios with 95% confidence intervals (CIs) and successful ET rates were pooled to determine the effects of hCG on IVF-ET outcomes. RESULT(S): Fifteen randomized controlled trials (RCTs) with a total of 2,763 participants were included. Infertile women in the experimental group (treated with intrauterine hCG injection before ET) exhibited significantly higher LBR (44.89% vs. 29.76%), OPR (48.09% vs. 33.42%), CPR (47.80% vs. 32.78%), and IR (31.64% vs. 22.52%) than those in the control group (intrauterine injection of placebo or no injection). Furthermore, MR was significantly lower (12.45% vs. 18.56%) in the experimental group than in the control group. CONCLUSION(S): The findings of this meta-analysis indicate that intrauterine injection of hCG can improve LBR, OPR, CPR, and IR after IVF-ET cycles. In addition, different timing and dosages of hCG administration may exert different effects on IVT-ET outcomes. Notably, infertile women treated with 500 IU hCG within 15 minutes before ET can achieve optimal IVF-ET outcomes.


Assuntos
Gonadotropina Coriônica/administração & dosagem , Transferência Embrionária , Fármacos para a Fertilidade Feminina/administração & dosagem , Fertilização In Vitro , Infertilidade Feminina/terapia , Gonadotropina Coriônica/efeitos adversos , Implantação do Embrião/efeitos dos fármacos , Transferência Embrionária/efeitos adversos , Feminino , Fertilidade/efeitos dos fármacos , Fármacos para a Fertilidade Feminina/efeitos adversos , Fertilização In Vitro/efeitos adversos , Humanos , Infertilidade Feminina/diagnóstico , Infertilidade Feminina/fisiopatologia , Injeções , Nascimento Vivo , Gravidez , Complicações na Gravidez/etiologia , Taxa de Gravidez , Ensaios Clínicos Controlados Aleatórios como Assunto , Fatores de Risco , Resultado do Tratamento
18.
Reprod Biol ; 19(2): 210-217, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31262644

RESUMO

Clinical outcomes of fresh embryo transfer in non-hCG triggered in vitro maturation (IVM) cycles are inferior compared to vitrified-warmed embryo transfer. This is a prospective observational pilot study in a consecutive cohort of 31 polycystic ovary syndrome (PCOS) patients and 37 normo-ovulatory egg donors who underwent IVM without fresh embryo transfer between July 2009 and June 2014. All subjects received 150 IU of highly purified menotropin (HP-hMG) daily for three days. On cycle day 6, all patients started transdermal oestradiol (E2) at a daily dose of 9 mg. There was no human chorionic gonadotropin (hCG) trigger before oocyte retrieval (OR). Vaginal micronized progesterone was commenced on the evening after OR, at a daily dose of 600 mg. Additional luteal phase support (LPS) was administered as follows: Group A: no additional LPS; Group B: 1500 IU of hCG administered 4 h after OR and Group C: 5000 IU of hCG administered 4 h after OR + an additional injection of 5000 IU of hCG 1 day before endometrial biopsy. Endometrial biopsy for histology and immunohistochemistry (IHC) was performed on day 5 or 6 after OR. Instead of being downregulated, both PR-B and ERα in endometrial glands and stroma were moderately to strongly expressed in all three protocols, suggesting that the mid-luteal histological signature of endometrial receptivity is deficient in a non-hCG-triggered IVM cycle. Poor clinical outcomes after fresh embryo transfer following IVM are probably related to inappropriate endometrial development which may be linked to the short follicular phase of IVM cycles.


Assuntos
Gonadotropina Coriônica/farmacologia , Endométrio/metabolismo , Regulação da Expressão Gênica/efeitos dos fármacos , Síndrome do Ovário Policístico/metabolismo , Receptores de Esteroides/metabolismo , Adulto , Gonadotropina Coriônica/administração & dosagem , Estudos de Coortes , Estradiol/administração & dosagem , Estradiol/farmacologia , Feminino , Humanos , Técnicas de Maturação in Vitro de Oócitos , Projetos Piloto , Progesterona/administração & dosagem , Progesterona/farmacologia , Estudos Prospectivos , Receptores de Esteroides/genética , Adulto Jovem
19.
BJOG ; 126 Suppl 4: 58-65, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31169952

RESUMO

OBJECTIVE: To compare effectiveness of spontaneous ovulation monitored by urinary luteinising hormone (LH) versus induced ovulation by administration of human chorionic gonadotrophin (hCG) in couples undergoing gonadotrophin-stimulated intrauterine insemination (IUI). DESIGN: Randomised controlled trial. SETTING: University-level infertility unit. POPULATION: Couples with unexplained infertility, mild endometriosis, mild male factor infertility and polycystic ovarian syndrome. METHODS: Couples were randomised to an LH group (Group A), in which urinary LH was measured daily to detect spontaneous ovulation, or an hCG group (Group B), in which urinary hCG was administered as a trigger. MAIN OUTCOME MEASURES: Clinical pregnancy rate. Secondary outcomes - ongoing pregnancy, live birth, multiple pregnancy and miscarriage rates. RESULTS: A total of 392 couples were randomised with 196 in each arm. The clinical pregnancy rate per woman randomised was 14/196 (7.1%) in the LH arm versus 15/196 (7.6%) in the hCG arm (P = 0.847, which was not statistically significant). Similarly, the ongoing pregnancy rates [13/196 (6.6%) versus 14/196 (7.1%); P = 0.84] and the live birth rates [13/196 (6.6%) versus 14/196 (7.1%); P = 0.84] between the two groups did not show any significant difference. The duration of stimulation and gonadotrophin dosage also did not differ significantly between the two methods. CONCLUSION: There was no significant difference in clinical pregnancy rates when urinary LH and hCG trigger were compared as methods to time insemination in women undergoing gonadotropin-stimulated IUI. TWEETABLE ABSTRACT: A randomised controlled study showing similar effectiveness between two different methods of timing IUI.


Assuntos
Coeficiente de Natalidade , Gonadotropina Coriônica/administração & dosagem , Hormônio Luteinizante/urina , Indução da Ovulação/métodos , Substâncias para o Controle da Reprodução/administração & dosagem , Feminino , Humanos , Inseminação Artificial/métodos , Masculino , Gravidez
20.
Curr Med Sci ; 39(3): 431-436, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31209815

RESUMO

Polycystic ovary syndrome (PCOS) is one of the most common causes of infertility in women. Progestin-primed ovarian stimulation (PPOS) protocol, which used oral progestin to prevent premature luteinizing hormone (LH) surges in ovarian stimulation, has been proved to be effective and safe in patients with PCOS. The aim of the present study was to compare the efficacy of PPOS protocol with that of the traditional gonadotropin-releasing hormone (GnRH) antagonist protocol in patients with PCOS. A total of 157 patients undergoing in-vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) were recruited into this study. The patients were divided into two groups by the stimulation protocols: the GnRH antagonist protocol group and the PPOS protocol group. There was no significant difference in the clinical characteristics between the two groups. Dose and duration of gonadotropin were higher in the PPOS protocol group. Estradiol levels on the day of human chorionic gonadotropin (hCG) administration were significantly lower in the PPOS protocol group. Fertilization rates and the number of good quality embryos were similar between the two groups. Remarkably, we found 6 patients with moderate ovarian hyperstimulation syndrome (OHSS) in the GnRH antagonist protocol group but 0 in the PPOS protocol group. A total of 127 women completed their frozen embryo transfer (FET) cycles. There were no significant differences between the two groups in terms of clinical pregnancy rate per transfer, implantation rate, first-trimester miscarriage rate and on-going pregnancy rate per transfer. To conclude, PPOS protocol decreased the incidence of OHSS without adversely affecting clinical outcomes in patients with PCOS.


Assuntos
Fármacos para a Fertilidade Feminina/uso terapêutico , Hormônio Liberador de Gonadotropina/análogos & derivados , Antagonistas de Hormônios/uso terapêutico , Infertilidade Feminina/terapia , Indução da Ovulação/métodos , Síndrome do Ovário Policístico/fisiopatologia , Progestinas/administração & dosagem , Adulto , Gonadotropina Coriônica/administração & dosagem , Transferência Embrionária/métodos , Estradiol/sangue , Feminino , Fertilização In Vitro/métodos , Expressão Gênica , Hormônio Liberador de Gonadotropina/antagonistas & inibidores , Hormônio Liberador de Gonadotropina/genética , Hormônio Liberador de Gonadotropina/metabolismo , Hormônio Liberador de Gonadotropina/uso terapêutico , Humanos , Infertilidade Feminina/complicações , Infertilidade Feminina/diagnóstico , Infertilidade Feminina/fisiopatologia , Masculino , Síndrome de Hiperestimulação Ovariana/induzido quimicamente , Síndrome de Hiperestimulação Ovariana/diagnóstico , Síndrome de Hiperestimulação Ovariana/prevenção & controle , Ovário/efeitos dos fármacos , Ovário/metabolismo , Ovário/fisiopatologia , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/diagnóstico , Gravidez , Taxa de Gravidez , Progestinas/efeitos adversos , Estudos Prospectivos , Injeções de Esperma Intracitoplásmicas/métodos , Resultado do Tratamento
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