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Artículos de revistas sobre el tema "Ovum Physiology"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 27 de enero de 2023

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1

Seneda, M. M., F. Morotti, A. F. Zangirolamo, N. C. da Silva, T. K. Sanches, W. Blaschi, and T. R. R. Barreiros. "Antral follicle population in prepubertal and pubertal heifers." Reproduction, Fertility and Development 31, no. 1 (2019): 10. http://dx.doi.org/10.1071/rd18344.

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The antral follicle count (AFC) is an important tool in the selection of bovine females destined for biotechnology. However, little is known about AFC in prepubertal and pubertal heifers. Some challenges inherent to the physiology of young females must be considered to achieve efficient rates with different procedures, such as ovum pick-up and IVF. This paper covers some important topics about ovarian physiology related to the population of antral follicles and reproductive efficiency in young female cattle.

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2

Erickson, Gregory. "An Analysis of Follicle Development and Ovum Maturation." Seminars in Reproductive Medicine 4, no. 03 (August 1986): 233–54. http://dx.doi.org/10.1055/s-2007-1022504.

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3

Mishra, Sanjay, Amit Kumar Mani Tiwari, Ram B. Singh, and Abbas A. Mahdi. "Sperm DNA Links from Sperm to Ovum to Implant Genetic Changeability: an Overview." SOJ Gynecology , Obstetrics & Women's Health 4, no. 1 (April 10, 2018): 1–10. http://dx.doi.org/10.15226/2381-2915/4/1/00132.

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Sperm DNA disintegration is known to cooperate male fertility. The data bring about that sperm DNA cleavage can be competently treated with orally administered antioxidant during a relatively short moment period. It is an accepting thought that the two types of DNA become visible to be distinctive and autonomously packaged molecules; though, investigation has established the symbiotic nature of these structures in contributing to male infertility. Data should continue to be gathered to ascertain strong correlation between conventional semen examination parameters and sperm DNA integrity; this

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4

Humblot, Patrice, Daniel Le Bourhis, Sebastien Fritz, Jean Jacques Colleau, Cyril Gonzalez, Catherine Guyader Joly, Alain Malafosse, et al. "Reproductive Technologies and Genomic Selection in Cattle." Veterinary Medicine International 2010 (2010): 1–8. http://dx.doi.org/10.4061/2010/192787.

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The recent development of genomic selection induces dramatic changes in the way genetic selection schemes are to be conducted. This review describes the new context and corresponding needs for genomic based selection schemes and how reproductive technologies can be used to meet those needs. Information brought by reproductive physiology will provide new markers and new improved phenotypes that will increase the efficiency of selection schemes for reproductive traits. In this context, the value of the reproductive techniques including assisted embryo based reproductive technologies (Multiple Ov

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5

Podolsky, Robert D. "Fertilization ecology of egg coats: physicalversuschemical contributions to fertilization success of free-spawned eggs." Journal of Experimental Biology 205, no. 11 (June 1, 2002): 1657–68. http://dx.doi.org/10.1242/jeb.205.11.1657.

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SUMMARYFree-spawned eggs are typically enclosed within accessory structures that are shed early in development. Most research on the role of these structures in fertilization has focused on chemical constituents and their influence on sperm—egg interaction. Here I test an alternative hypothesis that accessory structures play an important physical role in fertilization by increasing the size and buoyancy of the egg, making it a better target for sperm. In the sand dollar Dendraster excentricus, the jelly coat increases egg target size sixfold. At nonsaturating sperm concentrations,fertilization

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6

Azumendi, Guillermo, Kazuo Maeda, Ritsuko K. Pooh, and Iva Lausin. "Advances in Visualization of the Early Human Development." Donald School Journal of Ultrasound in Obstetrics and Gynecology 3, no. 3 (2009): 25–38. http://dx.doi.org/10.5005/jp-journals-10009-1018.

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Abstract The anatomy and physiology of placental and embryonic development is a field where medicine exerts its impact on early pregnancy and opens fascinating aspects of embryonic differentiation. The introduction of high frequency transvaginal transducers as well as three and four dimensional sonography has resulted in remarkable progress in ultrasonic visualization of early embryos and fetuses. Ultrasound has been widely used in the field of early human development due to its safety, diagnostic accuracy and convenience. Normal fetal anatomy and development have been widely investigated usin

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7

Csöbönyeiová, M., I. Varga, L. Lapides, L. Pavlíková, C. Feitscherová, and M. Klein. "From a Passive Conduit to Highly Dynamic Organ. What are the Roles of Uterine Tube Epithelium in Reproduction?" Physiological Research 71, Suppl. 1 (December 27, 2022): S11—S20. http://dx.doi.org/10.33549/physiolres.934954.

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It is well known that the mammalian uterine tube (UT) plays a crucial role in female fertility, where the most important events leading to successful fertilization and pre-implantation embryo development occur. The known functions of these small intra-abdominal organs are: an uptake and transport of oocytes; storage, transportation, and capacitation of spermatozoa, and finally fertilization and transport of the fertilized ovum and early embryo through the isthmus towards the uterotubal junction. The success of all these events depends on the interaction between the uterine tube epithelium (UTE

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8

Leese, H. J., and S. M. Gray. "Vascular perfusion: a novel means of studying oviduct function." American Journal of Physiology-Endocrinology and Metabolism 248, no. 5 (May 1, 1985): E624—E632. http://dx.doi.org/10.1152/ajpendo.1985.248.5.e624.

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An in situ preparation for the combined vascular and luminal perfusion of the rabbit oviduct has been developed. Medium 199, gassed with 5% CO2 in O2 and supplemented with heparin, antibiotics, and 2.5% wt/vol dialyzed bovine serum albumin was infused into the ovarian artery at a rate of 1 ml/min. Krebs Ringer bicarbonate medium was recirculated through the lumen at a rate of 50 microliter/min. The ovary was perfused together with the oviduct, and the preparation is viable for up to 3 h. Equal concentrations of pyruvate, lactate, glucose, and sucrose added to the vascular medium were transport

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9

Jemal, Jeilu, Tamrat Degefa, Tefera Yilma, Sayid Ali, and Lemma Alemayehu. "Ovarian follicular dynamics in Boran and Crossbred heifers in Ethiopia: Implications for assisted reproductive techniques." Ethiopian Veterinary Journal 24, no. 2 (November 10, 2020): 54–72. http://dx.doi.org/10.4314/evj.v24i2.4.

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The study was conducted to characterize the follicular dynamics of purebred Boran (Bos indicus) and Boran * Holstein Friesian crossbred heifers during estrous cycles; for use in ovum pick up and in-vitro embryo production. Insight of reproductive physiology of cattle would help to understand and exploit the reproductive potential of elite animals for breed improvement. Follicular development, growth and atresia during estrous cycles were evaluated using a trans-rectal real-time B-mode ultrasound system for three consecutive estrus cycles. Luteal activity was evaluated by serum progesterone lev

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10

Wong, PY. "Abnormal fluid transport by the epididymis as a cause of obstructive azoospermia." Reproduction, Fertility and Development 2, no. 2 (1990): 115. http://dx.doi.org/10.1071/rd9900115.

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It has been known for more than a decade that in many mammalian species including man, spermatozoa once shed from the testis are immature, immotile and incapable of fertilizing the ovum. During their transit through the epididymis, they undergo various morphological and functional changes that confer on them the ability to ascend the female tract, to undergo an acrosome reaction, to penetrate the zona pellucida and to effect a successful fertilization. By the time spermatozoa have reached the cauda epididymidis, they are held in a quiescent state by factors in the epididymal fluid. The epididy

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11

Mani, Kannan, Sheetal A. Agrawal, and Ashish S. Agrawal. "Garbhavkranti and Chronological Evaluation of Garbha: A Review." International Journal of Research and Review 8, no. 7 (July 14, 2021): 154–60. http://dx.doi.org/10.52403/ijrr.20210721.

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Ayurveda the science of medicine deals with the aim of Swastha Sharir. The Rachna Sharir is the ayurveda term which mainly deals with the anatomical and physiological compositions of body. Sushrut samhita is one of those Ayurvedic classic which deals with human anatomy and physiology. It gives precise description of Garbha vruddhi and vikas kram in detail. The knowledge of Sharir starts from Garbha. The understanding of Garbha helps to manage healthy progeny. According to Ayurveda, the union of shukra (spermatozoa), shonita (ovum) and Atma (soul) inside the uterus is known as garbha (embryo).

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12

Joyce, Kamryn, Ahmed Gad, Nico G. Menjivar, Daniella C. Heredia, Camila Santos Rojas, Dawit Tesfaye, and Angela M. Gonella. "PSIII-17 Transcriptome Response of Granulosa Cells to Seasonal Heat Stress in Beef Cows." Journal of Animal Science 100, Supplement_3 (September 21, 2022): 242–43. http://dx.doi.org/10.1093/jas/skac247.438.

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Abstract Investigation of cellular responses to thermal heat stress can lead to identifying novel targets of intervention to tackle the increasing fertility decline due to climate change-associated seasonal heat stress. We aimed to study the response of granulosa cells to seasonal thermal stress. Dry beef cows (n=11) were kept together during the study and subjected to synchronization and stimulation for follicular dynamics. Ovum pick-up (OPU) was conducted on all animals in the winter and summer. Once OPU-fluid settled, cumulus-oocyte-complexes (COCs) and granulosa cells were isolated form th

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13

Huanca, W. F., J. M. Palomino, J. C. Villanueva, J. Malaga, and W. Huanca. "228 Effect of seminal plasma on the interval to application of equine chorionic gonadotrophin for the recovery of cumulus-oocyte complexes in alpacas (Vicugna pacos)." Reproduction, Fertility and Development 32, no. 2 (2020): 242. http://dx.doi.org/10.1071/rdv32n2ab228.

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Alpacas as other camelids are induced ovulators and require an external stimulus-mounting by the male-for ovulation. NGF-β, protein present in the seminal plasma (SP) is reported as being responsible for stimulating ovulation. However, limited information exists on the effect of ovulation inducers in the new follicular wave emergence with application on protocols of superstimulation. The aim of the study was to determine the effect of two ovulation induced techniques and two different times on the interval to application of equine chorionic gonadotrophin (eCG) for the ovarian superstimulation

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14

Wohlres-Viana, S., M. M. Pereira, A. P. Oliveira, J. H. M. Viana, M. A. Machado, and L. S. A. Camargo. "257 DIFFERENCES BETWEEN BOS TAURUS AND BOS INDICUS EMBRYOS: TRANSCRIPTS AMOUNTS." Reproduction, Fertility and Development 22, no. 1 (2010): 285. http://dx.doi.org/10.1071/rdv22n1ab257.

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The Zebu breeds (Bos indicus) are different from European breeds (Bos taurus) in some aspects of their reproductive physiology, including follicle recruitment, number of follicular waves, and oocyte ultrastructure. On the other hand, embryos produced in vivo and in vitro show morphological and developmental differences, which can be related to culture environment. The aim of this study was to evaluate the effect of breed (Gyr v. Holstein) within embryo production system (in vivo and in vitro), as well as effect of production systems within breeds on relative abundance of transcripts related to

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15

Shah, Syed Mohmad, and Manmohan Singh Chauhan. "Modern biotechnological tools for enhancing reproductive efficiency in livestock." Indian Journal of Genetics and Plant Breeding (The) 79, no. 01S (April 20, 2019). http://dx.doi.org/10.31742/ijgpb.79s.1.14.

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Farm animals, an important component of agriculture in Asia and other countries of the world plays a pivotal role in agricultural economy in the form of meat, milk and drought power. This important animal resource needs to be genetically improved owing to considerable dependence of the state economy, food chain as well as the farmer’s security upon them. The limitation to genetic improvement imposed by inherent biological factors can be overcome by the use of reproductive bio-techniques which aim to manipulate reproduction - related events and/or structures to achieve pregnancy with the final

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16

Chaudhari, Latesh Y., Saurabh P. chaudhari, and Paresh K. Patil. "A Brief Review On: In Vitro Fertilization." International Journal of Pharmaceutical Sciences Review and Research, July 15, 2022, 47–57. http://dx.doi.org/10.47583/ijpsrr.2022.v75i01.008.

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In vitro fertilization (IVF) is the advanced and miraculous process by which the egg is fertilized by the sperm outside the body or a coined as the In-vitro. The advanced clinical treatment for the In-vitro fertilization (IVF) infertility when previously; other methods of assisted reproductive technology had been failed. The first successful birth of the "test tube baby" name was, Louise Brown, was born in 25 July, 1978 in London as the result of the natural cycle In-vitro fertilization (IVF). Robert G. Edwards, the physiologist who was developed the treatment, was awarded the Nobel Prize in P

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17

Devi, Kh Ambala, Pasang sona, Soram Gayatri Gatphoh, and L. Bimolchandra Singh. "“SPECTRUM OF HISTOPATHOLOGICAL CHANGES OF FALLOPIAN TUBES AND ITS POSSIBLE RELATION TO THE STATE OF UTERUS AND OVARIES IN SURGICALLY REMOVED SPECIMENS” – A TWO YEAR STUDY IN A TERTIARY CARE HOSPITAL." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH, September 1, 2022, 32–34. http://dx.doi.org/10.36106/ijsr/0501066.

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Background: The fallopian tube functions as an anatomic and physiologic link between the ovary and the uterus in reproduction by ensuring efcient and orderly ovum transport and providing a proper environment in which fertilization occurs. Not much studies has been done about the lesions of fallopian tube and its relation to the lesions of uterus and ovaries Objectives: To study the various histopathological lesions of uterus, ovaries and fallopian tubes. To correlate the possible relation of the lesions in the uterus and the ovaries to the changes in the fallopian tubes. Materials And Methods

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