Thematische Bibliographien / Ovum Physiology

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Auswahl der wissenschaftlichen Literatur zum Thema „Ovum Physiology“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 27. Januar 2023

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Zeitschriftenartikel zum Thema "Ovum Physiology"

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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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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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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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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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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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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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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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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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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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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Dissertationen zum Thema "Ovum Physiology"

Ying, Ying, and 應嬴. "Male accessory sex glands and oocyte activation at fertilization in the golden hamster." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31239663.

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Nottle, Mark Brenton. "Short-term nutrition and its effect on ovulation in the ewe." Title page, table of contents and summary only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phn921.pdf.

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Seridi-Benkaddour, Ratiba. "Etude ultrastructurale et biochimique de la secretion de la goutte micropylaire par le nucelle au moment de la pollinisation chez quatre gymnospermes : thuya orientalis, cupressacees, cephalotaxus drupacea, cephalotaxacees, taxus baccata, taxacees." Paris 7, 1988. http://www.theses.fr/1988PA077152.

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Nottle, Mark Brenton. "Short-term nutrition and its effect on ovulation in the ewe / by Mark Brenton Nottle." Thesis, 1988. http://hdl.handle.net/2440/19113.

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Includes bibliographical references (leaves 143-165)<br>xiii, 168 leaves : ill. (some col.) ; 30 cm.<br>Reports on studies undertaken to examine the physiological basis of the known ability of lupin grain to increase ovulation rate in the ewe.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Animal Sciences, Waite Agricultural Research Institute, 1989

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Bagg, Melanie Anna. "Factors affecting the developmental competence of pig oocytes matured in vitro." 2007. http://hdl.handle.net/2440/42908.

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Pre-pubertal pig oocytes possess lower developmental competence than those from adult pigs following in vitro maturation (IVM). Previous studies have demonstrated that exposure of pre-pubertal oocytes to 1 mM dibutyryl cAMP (dbcAMP), a membrane permeable cyclic adenosine monophosphate (cAMP) analogue, for the first 20 h of IVM improves the rate of blastocyst development. Developmental competence of in vitro matured pig oocytes has been reported to increase with increasing follicle size. In this thesis, experiments were carried out using pre-pubertal and adult pig oocytes to investigate the rel

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Bücher zum Thema "Ovum Physiology"

1932-, Yoshinaga Koji, Mori Takahide 1933-, and International Congress of Endocrinology (8th : 1988 : Kyoto, Japan), eds. Development of preimplantation embryos and their environment: Proceedings of a Symposium on Development of Preimplantation Embryos and their Environment (satellite symposium of the 8th International Congress of Endocrinology), held in Kyoto, Japan, July 14-16, 1988. New York: A.R. Liss, 1989.

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Evers, Johannes Leonardus Henricus, 1949- and Heineman Maas Jan 1952-, eds. From ovulation to implantation: Proceedings of the VIIth Reinier de Graaf Symposium, Maastricht, the Netherlands, 30 May-2 June 1990. Amsterdam: Excerpta Medica, 1990.

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R, Barnea E., Parvensky Mary T, and Society for Implantation and Early Pregnancy in Humans. World Conference, eds. Implantation and early pregnancy in humans: A combuned research and clinical approach. London: Parthenon Pub. Group, 1994.

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Paulesu, Luana Ricci. Signal molecules in animal and human gestation. Kerala, India: Research Signpost, 2004.

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J, Babin Patrick, Cerdà Joan 1965-, and Lubzens Esther, eds. The fish oocyte: From basic studies to biotechnological applications. Dordrecht, the Netherlands: Springer, 2007.

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Loke, Y. W. Human implantation: Cell biology and immunology. Cambridge: Cambridge University Press, 1995.

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1949-, Chapman Michael, Grudzinskas J. G, and Chard T, eds. Implantation: Biological and clinical aspects. London: Springer-Verlag, 1988.

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M, Beier H., Harper Michael J. K, and Chwalisz K. 1952-, eds. The endometrium as a target for contraception. Berlin: Springer, 1997.

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Development of preimplantation embryos and their environment: Proceedings of a Symposium on Development of Preimplantation Embryos and their Environment ... in clinical and biological research). A.R. Liss, 1989.

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The placenta from implantation to trophoblastic disease: Apoptosis, proliferation, invasion, and pathology. Rochester, NY: University of Rochester Press, 1999.

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Buchteile zum Thema "Ovum Physiology"

Carr, Bruce R., and Victor E. Beshay. "Fertilization, Implantation, and Endocrinology of Pregnancy." In Textbook of Endocrine Physiology. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199744121.003.0013.

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The complex and coordinated set of events leading to sperm and egg maturation and transport in the female genital tract that culminates in fertilization is one of the most remarkable phenomena in nature. This set of events is followed by the equally important unique processes of implantation, fetal maturation, and parturition. The hormonal changes that regulate these events are dependent on the close interaction of the fetal-placental-maternal unit. Just before ovulation, the egg, which has been arrested in the diplotene stage, completes the first meiotic division and forms the first polar body. The second meiotic division starts at the time of ovulation but ends only after fertilization by a sperm. The process of egg maturation is regulated through a closely interrelated set of hormonal events, most notably involving follicle-stimulating hormone (FSH), luteinizing hormone (LH), and estrogen. At the time of ovulation the fimbria of the oviduct are closely applied to the surface of the ovary. The extruded oocyte and adherent granulosa cells, known as the cumulus oophorus, is collected by the ciliated fimbrial end of the fallopian tube. The transport of the egg into the end of the fallopian tube occurs within minutes and is regulated primarily by ciliary action. The cumulus cells are able to communicate with one another via a network of intercellular bridges through the zona pellucida to the perivitelline space. The cumulus cells have also been reported to play a role in nutrition and maintenance of the ovum. There are three different stages of passage of the ovum through the fallopian tube. The first stage includes the transfer of the ovum from the fimbriated end of the fallopian tube until the egg reaches and is retained at the ampullary-isthmic junction. The ampullary-isthmic junction is a functional block but is not a clearly defined anatomical structure. The ovum remains at this junction for 1–2 days, during which time fertilization occurs.

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Mashamba, Tshililo. "Types of Multiple Pregnancy." In Multiple Pregnancy - New Insights [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105788.

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Multiple pregnancy is condition where more than one offsprings are formed. This result from either fertilization of more than one ovum individually by separate sperms or division of fertilized ovum. The implantation sites may be in different part of the genital organs and even the peritoneal cavity. The physiology of monozygotic multiple pregnancy is not fully understood as the trigger has not yet been identified. The incidence of multiple pregnancy is increasing, and this is as a result of assisted reproductive technologies.

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Al-Rshoud, Firas, and Tamara Darwish. "Controlled Ovarian Stimulation." In Advances in Assisted Reproduction Technologies, 112–24. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815051667122050006.

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For conception to occur, whether naturally or via assisted reproductive technology (ART), three things are required; a healthy sperm for fertilization, an ovum released from both ovaries (in the fallopian tubes for natural pregnancy or in the laboratory in IVF/ICSI), and a healthy place for the embryo to implant (a healthy receptive endometrial cavity), so any defect in any of the aforementioned pregnancy requirements will affect the achievement of pregnancy in both types; the natural one or that resulting from ART [1]. Ovarian stimulation is used to overcome any ovulatory disorder or in ART to collect as many eggs as possible (10-15 eggs at least) [2] to maximize the chances of pregnancy. Assessment of ovarian reserve is the first and most important step in ovarian stimulation, as this will indicate the proper method and dose needed for ovulation induction. We test for ovarian reserve using Biomarkers (FSH and AMH) and physical markers (antral follicles count(AFC)) by transvaginal ultrasound(TVS). Both AMH and AFC have similar accuracy in assessing ovarian reserve and are both superior to FSH as they have no cyclic variations [3]. This chapter will discuss all aspects of the physiology of the ovulation process and ovarian stimulation.

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Chenery-Morris, Sam, and Aileen Lynch. "Reproductive system." In Clinical Skills in Children's Nursing. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780199559039.003.0025.

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This chapter describes a number of clinical procedures related to the reproductive system that commonly occur in children. After completing this chapter you will have a working knowledge of the reproductive system and will have accomplished the following learning objectives. After reading this chapter you should be able to: ● Describe the anatomy of the female reproductive system including the external genitalia, the ovaries, the accessory reproductive structures, and the mammary glands. ● Describe the ovarian and menstrual cycles and the hormones that regulate them. ● Describe the anatomy of the male reproductive system including the external genitalia, the testes, the internal ducts, and the glands. ● Discuss the procedures involved in preparing the child for pelvic examination, demonstrating an awareness of the cultural, ethical, and legal implications of this examination. ● Explain and prepare the child for a swab procedure. ● Undertake the post-operative care of dressings on genitalia. Before embarking on this chapter it would be helpful to read through Chapter Two and Chapter Four, to provide you with relevant background skills required in this context. Informed consent and child protection are quite important related issues, and are covered in great detail in Chapter Four. The initial part of this chapter describes the anatomy and physiology of the reproductive system as a background towards understanding the relevant nursing care. This discussion is not intended to replace detailed study of anatomy and physiology, and for further and more detailed instruction on the topic you ought to consult a key text such as Martini & Nath (2008). The female reproductive system is regulated in a cyclical manner by hormones. The onset of the first menstrual cycle (menarche) occurs at puberty, and the female has the capacity to become pregnant up until the menopause, when the menstrual cycle ceases. The essential sex organs of the female reproductive system are the ovaries, which release one ovum (egg) each month. The fallopian tubes, uterus, vagina, and the mammary glands (breasts) make up the female accessory reproductive structures. The anatomy of the female reproductive system is illustrated in Figure 16.1.

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