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1.
Article in Chinese | WPRIM | ID: wpr-928100

ABSTRACT

This paper discussed the guiding significance of "disease-syndrome-symptom" mode in FU Qing-zhu's Obstetrics and Gynecology(FU Qing-zhu Nyu Ke) for dealing with ovulation disorder infertility caused by hyperprolactinemia(HPRL). FU Qing-zhu's Obstetrics and Gynecology(FU Qing-zhu Nyu Ke) concentrates on the disease entities, main symptoms, pathogenesis, and syndrome differentiation, based on which the prescriptions are prescribed. This reflects the "disease-syndrome-symptom" mode, with the core lying in the "combination of disease with syndrome". The contained Discussion on Menstruation Regulation(Tiao Jing Pian) and Discussion on Getting Pregnant(Zhong Zi Pian) have important reference significance for later doctors in the diagnosis and treatment of inferti-lity, and many prescriptions are still in use due to good effects. It is believed in traditional Chinese medicine(TCM) that HPRL results from kidney deficiency and liver depression, among which kidney deficiency is the main cause. Liver depression accelerates the onset of HPRL, so the kidney-tonifying and liver-soothing herbs were mainly selected. The "disease-syndrome-symptom" mode in FU Qing-zhu's Obstetrics and Gynecology(FU Qing-zhu Nyu Ke) sheds enlightenment on the diagnosis and treatment of ovulation infertility caused by HPRL, in that it is not confined to disease entity and syndrome type. The integration of "disease-syndrome-symptom" highlights the main complaint of patients and emphasizes the main pathogenesis, thus giving full play to the overall advantage of syndrome differentiation. For multiple diseases in FU Qing-zhu's Obstetrics and Gynecology(FU Qing-zhu Nyu Ke) such as infertility due to liver depression, infertility due to obesity, delayed menstruation, and irregular menstruation, although the typical lactation symptom of HPRL is not mentioned, the medication can still be determined according to the chief complaint, syndrome type, and symptoms and signs, making up for the defects of excessive reliance on serum biochemical indicators in modern Chinese medicine. We should learn its diagnosis and treatment thoughts of paying attention to liver, spleen, kidney, and heart, holism, and strengthening body resistance to eliminate pathogenic factors.


Subject(s)
Female , Gynecology , Humans , Hyperprolactinemia/drug therapy , Infertility , Obstetrics , Ovulation , Pregnancy
2.
Acta toxicol. argent ; 29(2): 1-10, dic. 2021. graf
Article in Spanish | LILACS | ID: biblio-1364280

ABSTRACT

Resumen El consumo crónico de alcohol es un problema de salud mundial que afecta particularmente a la población femenina. Sin embargo, los efectos de la ingesta semicrónica en cantidades moderadas a bajas en el ovario y el oocito son poco conocidos. En un modelo murino, se administró etanol al 10% en agua de bebida (hembras tratadas) o agua (hembras control) por 15 días, y luego de la superovulación o no (ovulación espontánea), se analizó el ciclo estral y la calidad ovárico-gamética. En las hembras tratadas, la frecuencia y duración del diestro aumentó, y las frecuencias de folículos y cuerpos lúteos disminuyeron vs hembras controles, valores que se restauraron luego de la superovulación. Sin embargo, en las hembras tratadas, la tasa de proliferación celular folicular y el desbalance de la expresión ovárica de VEGF (factor de crecimiento endotelial) persistieron luego de la superovulación. El número de ovocitos ovulados con metafase II anormal, fragmentados y activados partenogenéticamente fue mayor en las hembras tratadas respecto las controles. En conclusión, el consumo semicrónico moderado de alcohol produce anestro, ciclo estral irregular, foliculogénesis deficiente y anomalías núcleo-citoplasmáticas en los oocitos ovulados. Estas alteraciones podrían constituirse en un factor etiológico de pérdida gestacional temprana y desarrollo embrionario anormal luego del consumo de alcohol.


Abstract Chronic alcohol consumption is a global health problem that particularly affects the female population. However, the ef-fects of semi-chronic ethanol intake in low-moderate amounts on the ovary and oocyte are poorly understood. In a mouse model, 10% ethanol was administered in drinking water (treated females) or water (control females) for 15 days, and after superovulation or not (spontaneous ovulation), the estrous cycle and ovarian-gametic quality were analyzed. In treated females, the frequency and duration of the diestrus increased, and the frequencies of follicles and corpus luteum decreased vs control females, values that restored after superovulation. However, in treated females, the follicular cell proliferation rate and the imbalance in ovarian expression of VEGF (endothelial growth factor) persisted after superovulation. The number of ovulated oocytes with abnormal metaphase II, fragmented and parthenogenetically activated was higher in treated females than in control ones. In conclusion, moderate semi-chronic alcohol consumption produces anestrum, irregular estrous cycle, poor folliculogenesis, and nuclear-cytoplasmic abnormalities in ovulated oocytes. These alterations could constitute an etiological factor of early gestational loss and abnormal embryonic development after alcohol consumption.


Subject(s)
Humans , Animals , Female , Mice , Oocytes/drug effects , Alcohol Drinking/adverse effects , Ethanol/adverse effects , Ovarian Follicle/drug effects , Ovary/cytology , Ovary/drug effects , Oviducts/cytology , Oviducts/drug effects , Ovulation/drug effects , Models, Animal , Estrous Cycle/drug effects , Cell Proliferation , Germ Cells/cytology , Germ Cells/drug effects , Ovarian Follicle/cytology
3.
Arq. Ciênc. Vet. Zool. UNIPAR (Online) ; 24(2, cont.): e2408, jul-dez. 2021. ilus, graf
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1352315

ABSTRACT

A inseminação artificial em tempo fixo (IATF) é uma biotécnica com inúmeras vantagens para a produção de bovinos. Para a realização da IATF, as fêmeas bovinas devem receber um protocolo farmacológico que induz a ovulação de forma sincronizada. Esse protocolo inicia com a inserção de um dispositivo impregnado com progesterona que deve permanecer no fundo vaginal da fêmea por tempo determinado. O presente relato tem por objetivo descrever a remoção de um implante impregnado com progesterona que foi encontrado na cavidade abdominal de uma novilha. Durante um atendimento reprodutivo de rotina em uma propriedade rural, uma novilha da raça Jersey, recém-adquirida, com histórico de ter sido submetida à IATF, foi avaliada para diagnóstico de gestação. No exame a novilha não estava gestante e apresentava um cisto folicular ovariano. A novilha foi submetida novamente à IATF em que foi inserido e removido um implante, com isso o cisto regrediu e ao inseminar a novilha não foi possível passar a cérvix com o aplicador. Vinte dias após a inseminação a novilha manifestou estro e ao ser avaliada para nova inseminação, foi identificado um implante solto na cavidade abdominal da novilha. Foi realizada uma laparotomia pelo flanco esquerdo e o implante foi removido. Após a recuperação da cirurgia a novilha foi inseminada e novamente e ficou gestante. Os protocolos de IATF devem ser realizados por profissionais capacitados para evitar problemas como a presente situação em que um implante foi encontrado na cavidade abdominal de uma novilha.(AU)


The fixed-time artificial insemination (FTAI) is a biotechnique with numerous advantages for cattle production. In order to perform the FTAI, the cows must receive a pharmacological protocol to induce ovulation in a synchronized way. This protocol begins with the insertion of a device impregnated with progesterone that must remain in the vaginal fundus of the cow for a specific period of time. This report aims at describing the removal of a progesterone impregnated implant that was found in the abdominal cavity of a heifer. During a routine reproductive service in a rural property, a recently acquired Jersey heifer, with history of having been submitted to FTAI, was evaluated for pregnancy diagnosis. At the exam, it was observed that the heifer was not pregnant and presented an ovarian follicular cyst. The heifer was then submitted to FTAI again, where an implant was inserted and removed. This made the cyst to recede, and upon subsequent insemination, the applicator was not able to pass the cervix. Twenty days after insemination, the heifer was in estrus and when it was evaluated for insemination, a loose implant was identified in the abdominal cavity of the heifer. A laparotomy was performed through the left flank and the implant was removed. After recovery from the surgery, the heifer was inseminated again and became pregnant. The FTAI protocols should only be carried out by trained professionals to avoid problems such as the one presented herein, where an implant was found in the abdominal cavity of a heifer.(AU)


La inseminación artificial a tiempo fijo (FTAI) es una biotécnica con numerosas ventajas para la producción de ganado. Para realizar FTAI, las hembras bovinas deben recibir un protocolo farmacológico que induzca la ovulación de forma sincronizada. Este protocolo comienza con la inserción de un dispositivo impregnado con progesterona que debe permanecer en el fondo vaginal de la hembra durante un tiempo específico. Este informe tiene como objetivo describir la extracción de un implante impregnado de progesterona que se encontró en la cavidad abdominal de una novilla. Durante la atención reproductiva de rutina en una propiedad rural, se evaluó el diagnóstico de preñez de una novilla de Jersey recién adquirida con antecedentes de someterse a FTAI. En el examen, la novilla no estaba embarazada y tenía un quiste folicular ovárico. La novilla fue nuevamente sometida a FTAI, en la cual se insertó y removió un implante, con esto el quiste retrocedió y al inseminar a la novilla no fue posible pasar el cérvix con el aplicador. Veinte días después de la inseminación, la vaquilla manifestó estro y cuando se evaluó para una nueva inseminación, se identificó un implante suelto en la cavidad abdominal de la vaquilla. Se realizó una laparotomía a través del flanco izquierdo y se extrajo el implante. Después de recuperarse de la cirugía, la novilla fue inseminada y nuevamente quedó embarazada. Los protocolos FTAI deben ser realizados por profesionales capacitados para evitar problemas como la situación actual donde se encontró un implante en la cavidad abdominal de una novilla.(AU)


Subject(s)
Animals , Cattle , Ovulation , Progesterone , Pregnancy, Animal , Insemination, Artificial , Cervix Uteri , Foreign Bodies , Estrus
4.
Arq. bras. med. vet. zootec. (Online) ; 73(4): 771-780, Jul.-Aug. 2021. tab, graf, ilus
Article in English | LILACS, VETINDEX | ID: biblio-1285281

ABSTRACT

The objective of this study was to evaluate follicular growth and ovulatory rates in mares treated with an intravaginal progesterone device (P4) during the 10-day period, associated with the use of estradiol benzoate (EB). The results were compared during the transition period (ET) in the spring and the breeding season in the summer (ER). The variables were submitted to ANOVA (Tukey's test), considering P<0.05. No ovulation occurred during the permanence of the P4 implant in both experimental periods. The ovulatory rate in the ER was 100% (n = 8) and in the ET 62.5% (n = 5; P = 0.0547). Significant differences were observed (<0.001), in both periods, comparing follicular growth rates during the permanence of P4 device (ER: 1.33 ± 0.89mm/d; ET: 1.00 ± 0.81mm/d) to the period without P4 (ER: 3.63 ± 1.33 mm/d; ET: 3.31 ± 1.66 mm/d). The present study demonstrated applicability and efficiency of a hormonal protocol using P4 intravaginal device and EB for follicular control in mares, both during ET and ER.


O objetivo deste trabalho foi avaliar a taxa de crescimento folicular e a taxa ovulatória em éguas tratadas com dispositivo intravaginal de progesterona (P4) durante o período de 10 dias, associado à utilização de benzoato de estradiol (BE). Os resultados foram comparados durante o período de transição (ET) da primavera com a época de reprodução no verão (ER). As variáveis foram submetidas à ANOVA (teste de Tukey), considerando-se P<0,05. Nenhuma ovulação ocorreu durante a permanência do dispositivo de P4 em ambos os períodos experimentais. A taxa ovulatória na ER foi de 100% (n = 8) e na ET, de 62,5% (n=5; P=0,0547). Diferença significativas (<0,001) foram observadas, em ambos os períodos experimentais, comparando as taxas de crescimento folicular durante a permanência da P4 (ER: 1,33 ± 0,89mm/d; ET: 1,00 ± 0,81mm/d) com o período sem P4 (ER: 3,63 ± 1,33mm/d; ET: 3,31 ± 1,66mm/d). O presente estudo demonstrou aplicabilidade e eficiência do protocolo hormonal utilizando dispositivo intravaginal de P4 e BE para controle folicular de éguas, tanto na ET quanto na ER.


Subject(s)
Animals , Female , Progesterone/administration & dosage , Benzoates , Estradiol , Horses/physiology , Ovulation , Seasons , Administration, Intravaginal , Analysis of Variance , Ovarian Follicle/physiology
5.
Rev. bras. ginecol. obstet ; 43(6): 480-486, June 2021. graf
Article in English | LILACS | ID: biblio-1341135

ABSTRACT

Abstract The process of ovulation involves multiple and iterrelated genetic, biochemical, and morphological events: cessation of the proliferation of granulosa cells, resumption of oocyte meiosis, expansion of cumulus cell-oocyte complexes, digestion of the follicle wall, and extrusion of the metaphase-II oocyte. The present narrative review examines these interrelated steps in detail. The combined or isolated roles of the folliclestimulating hormone (FSH) and luteinizing hormone (LH) are highlighted. Genes indiced by the FSH genes are relevant in the cumulus expansion, and LH-induced genes are critical for the resumption ofmeiosis and digestion of the follicle wall. A nonhuman model for follicle-wall digestion and oocyte release was provided.


Resumo O processo de ovulação envolve modificações genéticas, bioquímicas e morfológicas múltiplas e interrelacionadas: suspensão da proliferação das células da granulosa, reinício da meiose do oócito, expansão das células do complexo cumulus-oócito, digestão da parede folicular, e extrusão do oócito. Esta revisão narrativa examina em detalhes cada um desses eventos e os principais genes e proteínas envolvidos. Mais importante, a ação combinada ou isolada do hormônio folículo-estimulante (HFE) e do hormônio luteinizante (HL) é destacada. Detalha-se o papel do HFE na expansão do cumulus e do HL na digestão da parede folicular, permitindo a extrusão do oócito na superfície ovariana. Proveu-se um modelo não humano para explicar a digestão da parede folicular.


Subject(s)
Humans , Animals , Female , Ovulation/physiology , Luteinizing Hormone/physiology , Oocytes/growth & development , Ovulation/genetics , Luteinizing Hormone/genetics , Signal Transduction , Models, Animal , Cumulus Cells/physiology , Follicle Stimulating Hormone/physiology , Follicle Stimulating Hormone/genetics , Ovarian Follicle/growth & development , Granulosa Cells/physiology , Meiosis/physiology , Meiosis/genetics
6.
Article in Chinese | WPRIM | ID: wpr-887932

ABSTRACT

In the context of the new era, paying attention to maternal and child health and advocating prenatal and postnatal care can effectively improve the quality of the birth population. Traditional Chinese medicine has a long history of prenatal and postnatal healthcare with rich content, which is the theoretical basis of modern related services. With the social development and the improvement of people's awareness of prenatal and postnatal healthcare, people have gradually shifted the focus of prenatal and postnatal healthcare to the peri-pregnancy stage at present, namely that couples of childbearing age are guided to prepare for pregnancy under the premise of solving their basic diseases. Infertility is a common and refractory disease for women of childbearing age. Ovulation disorder is one of its common pathological mechanisms. Traditional Chinese medicine believes that kidney deficiency is the main cause and pa-thogenesis of anovulation infertility and blood stasis is an important factor throughout the disease course. In clinical practice, therapies for invigorating kidney and activating blood are safe and reliable to treat anovulatory infertility mainly by adjusting the hypothalamus-pituitary-ovarian axis, improving ovarian function, uterine environment and gamete quality and increasing endometrial volume. Under the guidance of the thought of prenatal and postnatal healthcare, the authors tried to explore the effect of therapies for kidney-tonifying and blood-activating in the treatment of anovulatory infertility in eugenics, with the purpose of providing ideas and basis for subsequent relevant clinical studies and contributing to prenatal and postnatal healthcare services.


Subject(s)
Anovulation , Child , Eugenics , Female , Humans , Infertility, Female/drug therapy , Kidney , Medicine, Chinese Traditional , Ovulation , Pregnancy
7.
Braz. J. Vet. Res. Anim. Sci. (Online) ; 58: e182745, 2021. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1348007

ABSTRACT

The objective of this study was to determine the ability of prostaglandin E2 (PGE2) to induce ovulation and expression of PGE2 receptor (EP2 and EP4) and COX genes (COX-1 and COX-2) in the ovary and pituitary of prepubertal mice. The positive control consisted of the application of 5 µg of gonadotropin-releasing hormone (GnRH, n = 29); the negative control applied 0.5 mL of phosphate buffered saline (PBS, n=31); the treatment tested the application of 250 µg of PGE2 (n = 29), making a total of 89 prepubertal mice (BALB/c). Mice were euthanized 14 to 15 h after treatments to detect ovulation and tissue collection. A Chi-square test was used to compare the proportion of animals ovulating. Gene expressions and number of ovulation were analyzed by one-way ANOVA and Tukey's test was used to compare means among groups. A greater proportion of mice (P < 0.001) ovulated after receiving GnRH (89.7%, 26/29) compared to PGE2 group (58.6%, 17/29). However, the proportion was higher compared to those treated with PBS (0%, 0/31). Ep2gene expression in the pituitary was > two-fold higher (P < 0.05) in the PGE2 group compared to the PBS and GnRH groups. Further, PGE2 stimulated Cox1 (2.7 fold, P < 0.05) while GnRH stimulated Cox2 expression (6.5 fold, P < 0.05) in the pituitary when compared to the PBS group. In conclusion, our results support the hypothesis that PGE2 can induce ovulation in prepubertal mice with a concomitant increase in Ep2 and Cox1 gene expression in the pituitary gland.(AU)


O objetivo deste estudo foi determinar a capacidade da prostaglandina E2 (PGE2) em induzir a ovulação e expressão do receptor PGE2 (EP2 e EP4) e genes COX (COX-1 e COX-2) no ovário e na hipófise de camundongos pré-púberes. O controle positivo consistiu na aplicação de 5 µg de hormônio liberador de gonadotrofina (GnRH, n = 29); o controle negativo aplicação 0,5 mL de tampão fosfato-salino (PBS, n=31); o tratamento testado aplicação de 250 µg de PGE2 (n = 29), perfazendo um total de 89 camundongos (BALB/c) pré-púberes. Os camundongos foram sacrificados 14 a 15 h após os tratamentos para detectar ovulações e coleta de tecido. O teste do qui-quadrado foi usado para comparar a proporção de animais ovulando. As expressões gênicas e o número de ovulação foram analisados por ANOVA e o teste de tukey foi usado para comparar as médias entre os grupos. Uma maior proporção de camundongos (P <0,001) ovulou após receber GnRH (89,7%, 26/29) em comparação com o grupo PGE2 (58,6%, 17/29). No entanto, a proporção foi maior em comparação com aqueles tratados com PBS (0%, 0/31). A expressão do gene Ep2 na hipófise foi duas vezes maior (P <0,05) no grupo PGE2 em comparação com os grupos PBS e GnRH. Além disso, a PGE2 estimulou a Cox1(2,7 vezes, P <0,05) enquanto o GnRH estimulou a expressão de Cox2 (6,5 vezes, P <0,05) na pituitária em comparação com o grupo PBS. Em conclusão, nossos resultados suportam a hipótese de que PGE2 é capaz de induzir ovulação em camundongos pré-púberes com aumento concomitante na expressão dos genes Ep2 e Cox1 na glândula pituitária.(AU)


Subject(s)
Animals , Mice , Ovulation , Dinoprostone/analysis , Gene Expression , Mice/genetics , Pituitary Gland
8.
Braz. J. Vet. Res. Anim. Sci. (Online) ; 58: e175001, 2021. ilus, graf
Article in English | LILACS, VETINDEX | ID: biblio-1344777

ABSTRACT

This study aimed to evaluate the role of prostaglandin F2α (PGF) on ovulation. In Experiment 1, cows were randomly allocated to two treatments to receive 150 µg of d-Cloprostenol (PGF Group, n = 12) or 2 mL of NaCl 0.9% (Control Group, n = 11) and CIDRs, were removed 4 days later. No cow ovulated in Control and PGF groups. In Experiment 2, cows were randomly separated into two experimental groups to receive 4 injections of 150 µg of d-Cloprostenol (n = 9) or 2 mL of NaCL 0.9% (n = 9). In this experiment, ovulation was not observed in any cows. In Experiment 3, ovariectomized cows receive three injections of 300µg of PGF analog (PGF Group, n = 5), 100µg of Lecirelin (GnRH Group, n = 5) or 2 mL of PBS (Control Group, n = 4). The LH concentration was higher (P <0.0001) in cows from the GnRH group than in the PGF and Control groups. In experiment 4, cows with preovulatory follicles (>11.5 mm) were treated with Saline (Control Group, n = 6); Lecirelin (GnRH Group, n = 7) or Cloprostenol Sodium (PGF Group, n = 6). There was a significant increase in the vascular area of follicles from 0 to 24 h in GnRH and PGF treatments. In conclusion, PGF was not able to induce ovulation in cows with high or low plasma progesterone concentration. Additionally, PGF alone was not able to induce LH release and follicle luteinization, but increased follicular vascularization.(AU)


O objetivo deste estudo foi avaliar o papel da prostaglandina F2α (PGF) na ovulação. No Experimento 1, as vacas foram alocadas aleatoriamente em dois tratamentos para receber 150 µg de d-Cloprostenol (Grupo PGF, n = 12) ou 2 mL de NaCl 0,9% (Grupo Controle, n = 11) e os CIDR, foram removidos 4 dias depois. Nenhuma vaca ovulou nos grupos Controle e PGF. No Experimento 2, as vacas foram separadas aleatoriamente em dois grupos experimentais para receber 4 injeções de 150 µg de d-Cloprostenol (n = 9) ou 2 mL de NaCL 0,9% (n = 9). Não foi observada ovulação em nenhum dos animais deste experimento. No Experimento 3, vacas ovariectomizadas receberam três injeções de 300µg de análogo de PGF (Grupo PGF, n = 5), 100µg de Lecirelina (Grupo GnRH, n = 5) ou 2 mL de PBS (Grupo Controle, n = 4). A concentração de LH foi maior (P <0,0001) nas vacas do grupo GnRH do que nos grupos PGF e Controle. No Experimento 4, vacas com folículos pré-ovulatórios (> 11,5 mm) foram tratadas com solução salina (Grupo Controle, n = 6), Lecirelina (Grupo GnRH, n = 7) ou Cloprostenol Sódico (Grupo PGF, n = 6). Houve um aumento significativo na área vascular dos folículos de 0 a 24h nos tratamentos com GnRH e PGF. Em conclusão, a PGF não foi capaz de induzir ovulação em vacas com alta ou baixa concentração plasmática de progesterona. Além disso, a PGF sozinha não foi capaz de induzir a liberação de LH e a luteinização do folículo, mas aumentou a vascularização folicular.(AU)


Subject(s)
Animals , Female , Cattle , Prostaglandins, Synthetic , Cattle/embryology , Cattle/physiology , Luteinizing Hormone , Dinoprost/analysis , Ovulation , Pituitary Gland
9.
Rev. invest. clín ; 72(6): 363-371, Nov.-Dec. 2020. tab, graf
Article in English | LILACS | ID: biblio-1289731

ABSTRACT

Abstract Background: Levonorgestrel (LNG) is a progesterone receptor agonist used in both regular and emergency hormonal contraception; however, its effects on the endometrium as a contraceptive remain widely unknown and under public debate. Objective: To analyze the effects of LNG or mifepristone (MFP), a progesterone receptor antagonist and also known as RU-486, administered at the time of follicle rupture (FR) on endometrial transcriptome during the receptive period of the menstrual cycle. Methods: Ten volunteers ovulatory women were studied during two menstrual cycles, a control cycle and a consecutively treated cycle; in this last case, women were randomly allocated to two groups of 5 women each, receiving one dose of LNG (1.5 mg) or MFP (50 mg) the day of the FR by ultrasound. Endometrial biopsies were taken 6 days after drug administration and prepared for microarray analysis. Results: Genomic functional analysis in the LNG-treated group showed as activated the bio-functions embryo implantation and decidualization, while these bio-functions in the T-MFP group were predicted as inhibited. Conclusions: The administration of LNG as a hormonal emergency contraceptive resulted in an endometrial gene expression profile associated with receptivity. These results agree on the concept that LNG does not affect endometrial receptivity and/or embryo implantation when used as an emergency contraceptive.


Subject(s)
Humans , Female , Adult , Young Adult , Embryo Implantation/drug effects , Mifepristone/pharmacology , Levonorgestrel/pharmacology , Contraceptives, Postcoital, Hormonal/pharmacology , Endometrium , Transcriptome/drug effects , Ovulation , Time Factors , Mifepristone/administration & dosage , Levonorgestrel/administration & dosage , Contraceptives, Postcoital, Hormonal/administration & dosage
11.
Rev. bras. ciênc. vet ; 27(2): 88-92, abr./jun. 2020. il.
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1378302

ABSTRACT

O objetivo do estudo foi comparar o efeito das técnicas hormonais e de luz artificial nas éguas receptoras de embrião acíclicas avaliando as taxas de gestação aos 14 e 28 dias durante a fase de transição de primavera. Os 48 animais foram distribuídos aleatoriamente nos grupos: controle (CONT, n=16), éguas cíclicas na fase ovulatória; luz artificial (LUZ, n=16), éguas acíclicas submetidas ao tratamento de luz artificial; e hormônio (HORM, n= 16), éguas acíclicas submetidas ao protocolo hormonal na fase de transição. As éguas do grupo LUZ foram estimuladas por 60 dias com luz artificial durante cinco horas por dia. Nos grupos CONT e LUZ, quando observada a presença de folículo ≥ 35 mm de diâmetro e edema uterino ≥ grau II, foram administrados 1,5 mg de acetato de deslorelina e 1500 UI de hCG para induzir a ovulação. As éguas do grupo HORM foram tratadas com três doses de 1,5 mg de benzoato de estradiol e seguiram os mesmos protocolos dos Grupos CONT e LUZ. Foi avaliada a taxa de gestação por ultrassonografia aos 14 dias e confirmação aos 28 em todos os grupos experimentais. Foi realizada análise descritiva e teste Qui-quadrado (significância de 5%). Taxas de gestação aos 14 e 28 dias foram semelhantes (p>0,05) entre todos os grupos. Os tratamentos HORM e LUZ durante o período de transição inverno-primavera mostraram-se eficazes para atender ao programa de transferência de embrião. Por ser um método mais natural, o protocolo LUZ tem potencial como mais uma ferramenta biotecnológica na reprodução de equinos.


The aim of this study was to compare the effect of hormonal and artificial light techniques on acyclic embryo recipient mares by assessing pregnancy rates at 14 and 28 days during the spring transition period. The 48 animals were randomly assigned to the groups: control (CONT, n = 16), cyclic mares in the ovulatory phase; artificial light (LIGHT, n = 16), acyclic mares subjected to artificial light treatment; and hormone (HORM, n = 16), acyclic mares submitted to hormonal protocol in transition phase. In the LIGHT group, mares were stimulated with artificial light for five hours a day, for 60 days. In CONT and LIGHT groups, when a follicle ≥ 35 mm in diameter and uterine edema ≥ grade II were observed, 1.5 mg of deslorelin acetate and 1500 IU hCG were administered to induce ovulation. In the HORM group, mares were treated with three doses of 1.5 mg of estradiol benzoate and followed the same protocols as the CONT and LIGHT groups. Pregnancy rate was assessed by ultrasound at 14 days and confirmation at 28 days in all experimental groups. Descriptive analysis and chi-square test (5% significance) were performed. Pregnancy rates at 14 and 28 days were similar (p> 0.05) among all groups. The HORM and LIGHT treatments during the winter-spring transition period proved to be effective during the embryo transfer programs. As it is a more natural method, the LIGHT protocol has the potential to be one more biotechnological tool in equine reproduction.


Subject(s)
Animals , Ovulation/physiology , Pregnancy, Animal/physiology , Reproductive Techniques, Assisted/veterinary , Embryo, Mammalian , Embryo Transfer/veterinary , Fertility , Horses/embryology , Phototherapy/veterinary , Seasons , Anestrus
12.
Int. j. morphol ; 38(1): 165-175, Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1056416

ABSTRACT

An alternative hyper-ovulator inducer to replace clomiphene citrate (CC) is needed as it is unsuitable for women with polycystic ovarian syndrome and is associated with low pregnancy rates. Anastrozole is an effective hyper-ovulator inducer, but has not been well researched. In order to determine the effectiveness of anastrozole as a hyper-ovulator inducer and to an extent compare it with CC in similar situations, this study ascertained the effects of these drugs on the expression of the focal adhesion proteins, paxillin and FAK, which are uterine receptivity markers in the surface luminal uterine epithelial cells of day 1 and day 6 pregnant Wistar rats. The results show that paxillin is localized in focal adhesions at the base of the uterine epithelial cells at day 1 of pregnancy whereas at day 6, paxillin disassembles from the basal focal adhesions and localizes and increases its expression apically. FAK is faintly expressed at the basal aspect of the uterine epithelial cells while moderately expressed at the cell-to-cell contact at day 1 in all groups from where it disassembles and relocates apically and becomes more intensely expressed at day 6 of pregnancy in untreated and anastrozole treated rats. Although paxillin is localized apically at day 6, its expression is significantly down-regulated with CC treatment suggesting its interference with the implantation process. These findings seem to suggest that anastrozole could favor implantation.


Para reemplazar el citrato de clomifeno (CC) es necesario un inductor de hiperovulación alternativo, ya que no es adecuado para mujeres con síndrome de ovario poliquístico y está asociado con tasas bajas de embarazo. El anastrozol es un inductor eficaz del hiper-ovulador, pero no se ha investigado adecuadamente. Con el fin de determinar la efectividad del anastrozol como inductor del hiper-ovulador y, en cierta medida, compararlo con CC en situaciones similares, este estudio determinó los efectos de estos fármacos en la expresión de las proteínas de adhesión focal, paxillin y FAK, uterinas marcadores de receptividad en la superficie luminal de células uterinas epiteliales, del día 1 y día 6 en ratas Wistar preñadas. Los resultados muestran que la paxilina se localiza en adherencias focales en la base de las células epiteliales uterinas en el día 1 del embarazo, mientras que en el día 6, la paxilina se desmonta de las adherencias focales basales y localiza y aumenta su expresión apicalmente. FAK se expresa débilmente en el aspecto basal de las células epiteliales uterinas, mientras que se expresa moderadamente en el contacto de célula a célula en el día 1 en todos los grupos, donde se separa y se reubica apicalmente y se expresa con mayor intensidad el día 6 de la preñez, en pacientes no tratados y tratados. ratas tratadas con anastrozol. Aunque la paxillina se localiza apicalmente en el día 6, su expresión está significativamente disminuida con el tratamiento con CC, lo que sugiere su interferencia con el proceso de implantación. Estos hallazgos sugieren que el anastrozol podría favorecer el proceso de implantación.


Subject(s)
Animals , Female , Rats , Uterus/drug effects , Anastrozole/pharmacology , Ovulation/drug effects , Rats, Wistar , Focal Adhesions/drug effects , Epithelium/drug effects , Focal Adhesion Protein-Tyrosine Kinases/drug effects , Paxillin/drug effects , Real-Time Polymerase Chain Reaction , Microscopy, Fluorescence
13.
Arq. bras. med. vet. zootec. (Online) ; 71(6): 1934-1939, Nov.-Dec. 2019. tab
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1055117

ABSTRACT

Avaliaram-se diferentes momentos de aplicação da gonadotrofina coriônica equina (eCG) em protocolos de inseminação artificial em tempo fixo (IATF) para vacas de leite. Foram utilizadas 76 fêmeas, as quais receberam, no dia zero (D0) do protocolo, dispositivos intravaginais de progesterona, sendo esses retirados no D9, e os animais foram, então, distribuídos aleatoriamente em três tratamentos: T1 - aplicação de eCG no momento da retirada dos dispositivos; T2 e T3 - aplicação de eCG 48h e 24h antes da retirada dos dispositivos, respectivamente. No D10 os animais receberam 1mg de GnRH, e a IATF foi realizada 52 horas após a retirada do implante. Não houve diferença (P>0,05) para intervalo entre a retirada do implante à ovulação (72,56±3,92h), o diâmetro do maior folículo no D9 (10,88±1,49mm), o diâmetro do folículo ovulatório (15,15±1,16mm) e do segundo maior folículo (7,49±0,52mm), a taxa de crescimento folicular (1,38±0,04mm/dia), a taxa de ovulação (96,67%), o intervalo entre diâmetro final e inicial do folículo dominante (73,49±3,84h), a área de corpo lúteo (2,27±0,43cm²), a porcentagem de CL no ovário direito (53,00%) e no esquerdo (26,33%) e a taxa de gestação (33,33%). O momento da aplicação da eCG não influenciou na eficiência do protocolo. Recomenda-se a utilização da eCG no momento da retirada do implante por otimização do manejo.(AU)


Different times of application of equine chorionic gonadotropin (eCG) in Fixed-Time Artificial Insemination (FTAI) protocols for dairy cows were evaluated. A total of 76 females were used, which received intravaginal progesterone devices on day zero (D0) of the protocol, which were withdrawn on D9, and the animals were then randomly distributed in three treatments: T1- application of eCG at the time of device withdrawal; T2 and T3 - application of eCG 48h and 24h before withdrawal of the devices, respectively. On D10 the animals received 1mg of GnRH and the FTAI was carried out 52 hours after the removal of the implant. There was no difference (P>0.05) for interval from implant removal to ovulation (72.56±3.92h), diameter of the largest follicle of D9 (10.88±1.49mm), diameters of ovulatory follicle (15.15±1.16mm) and of the second largest follicle (7.49±0.52mm), follicle growth rate (1.38±0.04mm/day), ovulation rate (96.67%), interval between final diameter and initial diameter of dominant follicle (73.49±3.84h), corpus luteum area (2.27±0.43cm²), percentage of CL in right ovary (53.00%) and in left ovary (26.33%) and pregnancy rate (33.33%). The time of the application of eCG did not influence the efficiency of the protocol. We recommend the use of eCG at the time of the removal of the implant for management optimization.(AU)


Subject(s)
Animals , Female , Cattle , Ovulation , Insemination, Artificial/veterinary , Gonadotropins, Equine/administration & dosage
14.
Pesqui. vet. bras ; 39(5): 324-331, May 2019. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1012747

ABSTRACT

This study aimed to evaluate the effect of treatment with equine chorionic gonadotrophin (eCG) on the follicular dynamics and function of crossbred cows with different circulating progesterone (P4) concentrations during synchronization of ovulation in a fixed-time artificial insemination (FTAI) protocol. To this end, 30 crossbred cows were submitted to a pre-synchronization protocol to ensure that all of them presented corpus luteum (CL) at the beginning of the protocol, and were evaluated by transrectal ultrasonography (TRUS) to verify the presence of CL. After that, the animals underwent an ovulation synchronization protocol and evaluation of follicular dynamics and vascularization by B-mode and power-Doppler ultrasound (US). High plasma P4 concentrations at the time of ovulation synchronization negatively influenced follicle diameter on day 10 (D10), preovulatory follicle diameter, and preovulatory follicle wall vascularization area (p<0.05). Cows with high P4 concentration at the time of ovulation synchronization that were treated with eCG showed follicle diameter on D10 and preovulatory follicle diameter and wall vascularization area (p>0.05) similar to those of animals with low P4 concentration at the time of ovulation synchronization. Therefore, high P4 concentrations at the time of ovulation synchronization negatively influence follicular diameter and vascularization, and eCG can be used as a strategy to favor better follicular and luteal response in crossbred cows with high P4 concentrations submitted to an FTAI protocol.(AU)


Objetivou-se neste estudo avaliar o efeito do tratamento com gonadotrofina coriônica equina (eCG) sobre a dinâmica e função folicular em fêmeas mestiças com diferentes concentrações circulantes de P4 durante a sincronização da ovulação em um protocolo de IATF. Para tanto, foram utilizadas 30 fêmeas mestiças e submetidas a um protocolo de pré-sincronização para garantir que todos os animais apresentassem corpo lúteo (CL) no início do protocolo, sendo avaliadas por ultrassonografia (US) transretal para a verificação da presença ou não de CL. Em seguida foram submetidas a um protocolo de sincronização da ovulação e avaliação da dinâmica e vascularização folicular por ultrassonografia (US) em modo B e Doppler colorido. Altas concentrações de P4 no momento da sincronização da ovulação impactaram negativamente no diâmetro do folículo no D10, o diâmetro do folículo pré-ovulatório e na área de vascularização da parede do folículo pré-ovulatório (P<0,05). As vacas com alta concentração de P4 no momento da sincronização da ovulação e que foram tratadas com eCG apresentaram diâmetro do folículo no D10 e no diâmetro e a área de vascularização da parede do folículo pré-ovulatório (P>0,05), semelhantes às vacas que com baixa concentração de P4 no momento da sincronização da ovulação. Conclui-se que elevadas concentrações de P4 no momento da sincronização da ovulação impactam negativamente no diâmetro e vascularização folicular e que o eCG pode ser utilizado como uma estratégia para favorecer uma melhor resposta folicular e luteal em fêmeas mestiças com altas concentrações de P4 submetidas a um protocolo de IATF.(AU)


Subject(s)
Animals , Female , Cattle , Progesterone/analysis , Insemination, Artificial/veterinary , Electrocardiography/drug effects , Ovulation
15.
Rev. bras. ginecol. obstet ; 41(3): 183-190, Mar. 2019. graf
Article in English | LILACS | ID: biblio-1003542

ABSTRACT

Abstract Considering that myths and misconceptions regarding natural procreation spread rapidly in the era of easy access to information and to social networks, adequate counseling about natural fertility and spontaneous conception should be encouraged in any kind of health assistance. Despite the fact that there is no strong-powered evidence about any of the aspects related to natural fertility, literature on how to increase the chances of a spontaneous pregnancy is available. In the present article, the Brazilian Federation of Gynecology and Obstetrics Associations (FEBRASGO, in the Portuguese acronym) Committee on Endocrine Gynecology provides suggestions to optimize counseling for non-infertile people attempting spontaneous conception.


Resumo Uma vez que mitos e equívocos sobre a procriação natural se espalham rapidamente na era do fácil acesso à informação e às redes sociais, o aconselhamento adequado sobre a fertilidade natural e a concepção espontânea deve ser encorajado em qualquer tipo de assistência à saúde. Apesar do fato de não haver evidências fortes sobre qualquer dos aspectos relacionados à fertilidade natural, existe literatura sobre como aumentar as chances de uma gravidez espontânea. No presente artigo, a Comissão Nacional de Ginecologia Endócrina da Federação Brasileira das Associações de Ginecologia e Obstetrícia (FEBRASGO) oferece sugestões para otimizar o aconselhamento a pessoas que tentam a concepção espontânea, na ausência do diagnóstico de infertilidade.


Subject(s)
Humans , Male , Female , Pregnancy , Adult , Young Adult , Preconception Care , Fertilization/physiology , Ovulation/physiology , Posture , Brazil , Attitude to Health , Smoking/adverse effects , Age Factors , Maternal Age , Paternal Age , Coitus/psychology , Sex Determination Processes/physiology , Counseling , Diet , Lubricants/administration & dosage , Fertility/physiology , Infertility, Female/diagnosis , Middle Aged
16.
Article in Chinese | WPRIM | ID: wpr-776264

ABSTRACT

OBJECTIVE@#To review systematically the safety and effectiveness of acupuncture-related therapies on ovulation rate and pregnancy rate in patients with polycystic ovary syndrome (PCOS).@*METHODS@#From PubMed, EMbase, the Cochrane Library, China Biology Medicine disc (CBM), China National Knowledge Infrastructure (CNKI), Wanfang database and VIP database, the randomized controlled trials (RCTs) on PCOS were retrieved in the period from the date of database establishment to January 8, 2018. Two researchers screened the articles, extracted the data and assessed the bias risk of the eligible trials independently. Using Stata 13.0 and WinBUGS 1.4.3 software, the data were analyzed.@*RESULTS@#A total of 39 RCTs were collected, including 4605 cases of PCOS and 14 kinds of acupuncture-related therapies and the comprehensive therapies. The short-term therapeutic effects were observed. The results of mesh meta-analysis showed: regarding the ovulation rate, the effects of the acupuncture-medication therapy were better than western medication. The top 6 therapeutic measures were the treatment with acupoint thread-embedding therapy and medication (93.3%), the treatment with moxibustion and Chinese herbal medicine (91.4%), moxibustion (74.5%), the treatment with acupuncture and medication (65.7%), the treatment with acupuncture-moxibustion and auricular point therapy (61.9%) and the treatment with acupuncture and auricular point therapy (49.6%). Regarding the pregnancy rate, the effects of the acupuncture-medication therapy were better than western medication. The top 6 therapeutic measures were the treatment with acupuncture and auricular point therapy (91.5%), the treatment with moxibustion and Chinese herbal medication (86.9%), the treatment with acupuncture-moxibustion and auricular point therapy (81.1%), the treatment with acupoint thread-embedding therapy and medication (69.4%), the treatment with acupuncture and medication (66.1%) and the treatment with placebo and western medication (58.7%).@*CONCLUSION@#Among acupuncture-related therapies, the combined treatment is more advantageous than single therapy and its safety is superior to western medication. The combined therapies are various in advantages. Because of the limitation of the present researches, it needs a large scale of RCTs with rational design, high quality and proper methods to verify this research conclusion.


Subject(s)
Acupuncture Therapy , China , Female , Humans , Network Meta-Analysis , Ovulation , Polycystic Ovary Syndrome , Therapeutics , Pregnancy , Pregnancy Rate , Randomized Controlled Trials as Topic
17.
Article in Chinese | WPRIM | ID: wpr-775880

ABSTRACT

OBJECTIVE@#To observe the effects of abdominal acupuncture and the periodic therapy of Chinese herbal medicine on follicular development and endometrial receptivity in the patients with infertility induced by ovulation failure and differentiated as kidney deficiency in TCM.@*METHODS@#A total of 84 patients with infertility induced by ovulation failure and differentiated as kidney deficiency were randomized into a combined therapy group (27 cases), an abdominal acupuncture group (27 cases) and a western medication group (30 cases). In the combined therapy group, abdominal acupuncture and the periodic treatment of Chinese herbal medicine was provided. In the abdominal acupuncture group, the simple abdominal acupuncture therapy was used. In the western medication group, clomiphene citrate (CC) and human chorionic gonadotrophin (HCG) prescribed. The treatment for one menstrual cycle was taken as one session and 3 sessions of treatment were required except the pregnancy. The folicle development, endometrial thickness and morphology, menstrual condition and TCM symptom score were observed before and after treatment in the three groups, and the clinical efficacy was evaluated.@*RESULTS@#After treatment, the ovulation was recovered to different degrees in the three groups. The ovulation rate was 59.3% (16/27) in the combined therapy group, 55.6% (15/27) in the abdominal acupuncture group and 53.3% (16/30) in the western medication group. The difference was not significant in comparison among the three groups (>0.05). After treatment, the endometrial thickness in the periovulatory period was increased as compared with the thickness before treatment in the combined therapy group and the abdominal acupuncture group (both <0.05). After treatment, the endometrial thickness in the combined therapy group was higher than the western medication group (<0.05). In comparison before and after treatment, the difference in the endometrial morphology was significant in the combined therapy group and the abdominal acupuncture group (both <0.05). In comparison between the combined therapy group and the western medication group, the difference in the endometrial morphology was significant after treatment (<0.05). After treatment, the menstrual condition and TCM symptom score in the combined therapy group and the abdominal acupuncture group were all improved as compared with those before treatment (all <0.05). The score of menstrual condition in the combined therapy group was higher than the western medication group (<0.05) and TCM symptom score in the combined therapy group and abdominal acupuncture group was higher than the western medication group after treatment (all <0.05). The total effective rate was 88.9% (24/27) in the combined therapy group and was 92.6% (25/29) in the abdominal acupuncture group, which was higher than 56.7% (17/30) in the western medication group (<0.01). There was no adverse reaction in the combined therapy group and the abdominal acupuncture group.@*CONCLUSION@#Abdominal acupuncture combined with the periodic therapy of Chinese herbal medicine improve the menstrual condition and relieve the clinical symptoms of infertility induced by ovulation failure of kidney deficiency in the patients and the therapeutic effects are better than the medication with CC + HCG. This combined therapy improves the ovulation rate and the endometrial receptivity at periovulatory stage to increase the pregnancy rate. There is no adverse reaction discovered in clinical practice.


Subject(s)
Acupuncture Therapy , Clomiphene , Drugs, Chinese Herbal , Female , Humans , Infertility, Female , Ovulation , Pregnancy
18.
Article in Chinese | WPRIM | ID: wpr-774588

ABSTRACT

To analyze the clinical efficiency of traditional Chinese medicine( TCM) Bushen Culuan Decoction in treating anovulatory infertility due to premature ovarian insufficiency( POI). A total of 90 eligible cases were randomly divided into experimental group and control group. The 45 cases in the experimental group took Bushen Culuan Decoction,while the other 45 cases in the control group took estradiol valerate( Progynova),clomiphene( Clomiphene Citrate tablet) and progesterone. The ovulation rate,pregnancy rate,serum hormone level and TCM symptom scale were tested to evaluate the effectiveness of the two therapies. All indexes in experimental group improved significantly after treatment( P<0. 05). The total effectiveness rate was 95. 35% in experimental group and 88. 37% in control group,with a significant difference( P<0. 01). Compared with control group,experimental group had better results in depressing FSH level,elevating AMH level,increasing number of AFC and improving TCM symptom,with significant differences( P < 0. 05). There was no significant difference between experimental group and control group in ovulation rate,pregnancy rate,depressing LH level or elevating E2 level. In this study,Bushen Culuan Decoction is proved to be safe and effective for clinical use in treating infertility due to POI.


Subject(s)
Drugs, Chinese Herbal , Female , Humans , Infertility, Female , Ovulation , Ovulation Induction , Pregnancy , Treatment Outcome
19.
Pers. bioet ; 22(2): 358-366, jul.-dic. 2018.
Article in Spanish | LILACS, BDENF, COLNAL | ID: biblio-990227

ABSTRACT

Resumen Este artículo tiene como finalidad hacer un comentario breve alusivo a la influencia de la Humanae vitae, cincuenta años después de haber sido publicada. En este contexto se comentan algunos aspectos alusivos a la influencia positiva que confiere esta encíclica al entorno afectivo de la sexualidad, tanto en la edad adulta como en edades temprana de la juventud, ante la influencia de la ideología LGTBI. La visión antropológica de la sexualidad confiere un entorno de respeto por la dignidad de la persona, ante las desviaciones que pueden llegar a presentarse debidas a la influencia de la ideología de género. Finalmente, se citan algunos artículos científicos de índole internacional, que ilustran positivamente la posibilidad de compatibilizar la ciencia con el carácter unitivo y procreativo de la Humanae vitae, en un entorno globalizado.


Abstract This short article aims to briefly comment on the influence of Humanae Vitae, fifty years after publication. In this context, some aspects related to the positive impact that Humanae Vitae lends to the affective environment of sexuality, both in adulthood and in the early ages of youth, are discussed given the influence of LGTBI ideology. The anthropological view of sexuality provides an environment of respect for the dignity of the person in terms of the deviations that may occur due to the influence of gender ideology. Finally, some international scientific articles are cited, which positively demonstrate the possibility of making science compatible with the unitive and procreative nature of Humanae Vitae in a globalized environment.


Resumo Este pequeno artigo visa fazer um breve comentário aludindo à influência da Humanae vitae, cinquenta anos depois de ter sido publicada. Nesse contexto, alguns aspectos relacionados à influência positiva que a Humanae vitae confere ao ambiente afetivo da sexualidade são discutidos, tanto na idade adulta quanto nos primeiros anos da juventude, diante da influência da ideologia LGTBI. A visão antropológica da sexualidade confere um ambiente de respeito à dignidade da pessoa, diante de desvios que podem surgir devido à influência da ideologia de gênero. Por fim, são citados alguns artigos científicos internacionais, que ilustram positivamente a possibilidade de compatibilizar a ciência com o caráter unitivo e procriador da Humanae vitae, em um entorno globalizado.


Subject(s)
Humans , Ovulation , Biotechnology , Biomarkers , Gender Expression , Gender Identity
20.
Rev. MVZ Córdoba ; 23(2): 6649-6659, May-Aug. 2018. tab, graf
Article in English | LILACS | ID: biblio-957360

ABSTRACT

Abstract Objective. To evaluate the uterine involution in Holstein cow, under the conditions of production of the bovine dairy cattle in the province El Carchi, Ecuador. Materials and Methods. Sixty cows were selected and the time for uterine involution was determined by the recto-vaginal examination, ultrasonography and the clinical score of the regression of the uterus. The statistical parameters for each variable were determined. The effect of parity and body condition (CC) on complete uterine involution was evaluated by multifactorial ANOVA and the LSD test to compare means. Results. The clinical involution of the uterus, without taking into account the clinical score occurred at 29.86±7.71 days but considering this notation was at 42 ± 0.39 days. The uterine involution took place earlier (p<0.05) in cows with BCS ≥ 3.5 at birth than in those with BCS <3.5. In second calving cows it was at 25.17±1.32 days and it was extended (p<0.05) for the third and fourth calving. The occurrence of the dominant follicle and ovulation occur at 16.63 ± 3.83 and 27.76±7.71 days, respectively. Conclusions. The clinical involution of the uterus occurred in less time when the recto-vaginal examination was considered, compared when it was evaluated taking into account the clinical score. The uterine involution process is influenced by parity and body condition at calving.


Resumen Objetivo. Evaluar la involución uterina en vacas Holstein, en las condiciones de producción de la ganadería bovina lechera en la provincia El Carchi, Ecuador. Materiales y métodos. Se seleccionaron 60 vacas y se determinó el tiempo para la involución uterina mediante la exploración recto-vaginal, ultrasonografía y la puntuación clínica de la regresión del útero. Se determinaron los estadígrafos descriptivos de cada variable. Se evaluó el efecto de la paridad y la condición corporal (CC) sobre la completa involución uterina mediante un ANOVA multifactorial y la prueba LSD para comparar las medias. Resultados. La involución del útero, sin tomar en cuenta la puntuación clínica ocurrió a los 29.86 ± 7.71 días pero considerando esta notación fue a los 42±0.39 días. La involución uterina ocurrió más temprano (p<0.05) en las vacas con CC al parto ≥ que 3.5 que en las que la tenían < de 3.5. En las vacas de segundo parto fue a los 25.17 ± 1.32 días y se prolongó (p<0.05) en el tercero y cuarto parto. La aparición del folículo dominante y la ovulación ocurrieron a los 16.63±3.83 y 27.76±7.71 días, respectivamente. Conclusiones. La involución clínica del útero considerando el examen recto-vaginal ocurrió en menor tiempo que cuando se evaluó considerando la puntuación clínica. El proceso de involución uterina está iinfluenciado por la paridad y la CC al parto.


Subject(s)
Ovulation , Parity , Postpartum Period
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