scholarly journals PP-25 EVOLUTION IN METHOD OF IN VITRO FERTILIZATION (CLASSICAL IVF OR ICSI) IN ASSISTED REPRODUCTION TECHNIQUES IN SPAIN

2012 ◽  
Vol 24 ◽  
pp. S14
Author(s):  
Yolanda Cabello ◽  
Esther Vidal ◽  
Fernando Prados ◽  
María José De Los Santos ◽  
Francisca Luceño ◽  
...  
Keyword(s):  
In Vitro Fertilization ◽  
Assisted Reproduction ◽  
Assisted Reproduction Techniques ◽  
Vitro Fertilization

scholarly journals Reproductive aspects of the male jaguar (Panthera onca): A review

2021 ◽  
Author(s):  
E. López-Pérez ◽  
F. Cortés-Villavicencio ◽  
C. Muñoz-García ◽  
J. Gallegos-Sánchez ◽  
Alejandro Ávalos-Rodríguez
Keyword(s):  
In Vitro Fertilization ◽  
Assisted Reproduction ◽  
Reproductive System ◽  
Artificial Insemination ◽  
Relevant Information ◽  
Panthera Onca ◽  
Leopardus Pardalis ◽  
Assisted Reproduction Techniques ◽  
Vitro Fertilization

Objective: To describe the anatomy, morphology and physiology of the reproductive system of male jaguars, as well as assisted reproduction techniques. Methodology: A literature review on the anatomy and morphology of the jaguar´s reproductive system, its physiological characteristics and assisted reproduction techniques were carried out to document relevant information on the topic. Results: With this review, basic aspects of the morphology of the reproductive system of the jaguars are disclosed, although scarce knowledge is available on their reproduction. The advances in the collection, evaluation and cryopreservation of semen of this feline are shown, in addition to assisted reproduction techniques such as artificial insemination and in vitro fertilization, which have a great potential to safeguard the species. Study limitations: The jaguar, an emblematic species of Latinamerica, is an endangered species, like other wild felids species as ocelot (Leopardus pardalis) and margay (Leopardus wiedii), which makes it necessary to have a national assisted reproduction program. However, for this to be possible, information about their reproductive physiology is necessary, which is complicated in wild animals and even more so because the reproductive mechanisms greatly differ between felids species. There is scarce information in this regard from its free-living or Mexican zoos, it is for this reason necessary to generate such information. Conclusions: It is necessary to continue working on designing protocols for artificial insemination and other assisted reproduction techniques such as in-vitro fertilization specifically for male Panthera onca.

scholarly journals The Role of MEMS in In-Vitro-Fertilization

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
I. D. Wijegunawardana ◽  
Y. W. R. Amarasinghe
Keyword(s):  
In Vitro Fertilization ◽  
Assisted Reproduction ◽  
Success Rates ◽  
Assisted Reproduction Techniques ◽  
Vitro Fertilization ◽  
Viable Solution ◽  
Micro Electromechanical System ◽  
Experienced Individual

The assisted reproduction has been considered a viable solution for the infertility of humankind for more than four decades. In-Vitro-Fertilization (IVF) is one of the most successful assisted reproduction techniques, where the reproductive cell of the female partner is fertilized outside of her body. Initially, the IVF process has been conducted manually by an experienced embryologist. However, even with a highly experienced individual, the operation had extremely lower success rates due to the limited control in environmental conditions and the requirement of precise movements. Therefore, to address this technological deficit, the feasibility of the mechatronics devices for IVF procedures has been investigated. Among the different mechatronics concepts, micro-electromechanical system (MEMS) technologies have been gradually attracted to the IVF process and improved its capabilities. The purpose of this paper is to present a brief overview of the role of MEMS technologies in IVF. The article classifies the MEMS technologies in IVF based on their application in order to emphasize its contribution. In addition, the article extensively discusses the state-of-the-art mechatronic techniques utilized in Intracytoplasmic Sperm Injection (ICSI), one of the most popular techniques used in IVF. This review article expects to become extremely beneficial for the engineering researchers new to this field who seek critical information on IVF in simple terms with highlights on the possible advancements and challenges that may emerge in the future.

scholarly journals Euthyroid Hyperthyrotropinemia in Children Born after in Vitro Fertilization

2009 ◽  
Vol 94 (4) ◽  
pp. 1338-1341 ◽  
Author(s):  
Sophia D. Sakka ◽  
Ariadne Malamitsi-Puchner ◽  
Dimitrios Loutradis ◽  
George P. Chrousos ◽  
Christina Kanaka-Gantenbein
Keyword(s):  
In Vitro Fertilization ◽  
Assisted Reproduction ◽  
Primary Hypothyroidism ◽  
Thyroid Peroxidase ◽  
Thyroglobulin Antibodies ◽  
Assisted Reproduction Techniques ◽  
Vitro Fertilization ◽  
Serum T3

Abstract Context: Assisted reproduction techniques are now commonly used. Although classic in vitro fertilization (IVF) started almost 30 yr ago, few long-term systematic prospective studies of children conceived with assisted reproduction have been performed. Objective: Our objective was to investigate thyroid function in children conceived after IVF vs. naturally conceived controls. Populations and Methods: A total of 106 children conceived after classic IVF and 68 naturally conceived controls, aged 4–14 yr, were studied. All children were thoroughly examined, and serum T3, T4, TSH, anti-thyroid peroxidase, and anti-thyroglobulin antibodies were measured. A second TSH determination and a thyroid ultrasound were performed for TSH higher than 5 μIU/ml, and children were considered to have persistent hyperthyrotropinemia, if the TSH elevation was confirmed. Results: Seven IVF children but none of the controls had persistent elevations of circulating TSH, suggesting euthyroid hyperthyrotropinemia or subclinical primary hypothyroidism (P = 0.044). TSH was significantly higher in the IVF group than in controls (P = 0.046), whereas no significant differences in the concentrations of T3 or T4 were observed. None of the children had detectable circulating antithyroid antibodies in either group. Conclusions: A significant elevation of serum TSH compatible with a mild TSH resistance of the thyroid were found in IVF children compared with controls. This was not due to the presence of antithyroid autoantibodies. We suggest that this might represent a slight epigenetic developmental abnormality related to the preimplantation manipulation of the embryo. Further studies are needed to confirm these findings and to better determine their etiopathogenesis and clinical significance.

Slægtskabsreguleringer. Feministisk retsretorik som analyseramme og dens potentiale for at identificere lovens performative effekter

2019 ◽  
Vol 23 (79) ◽  
Author(s):  
Charlotte Kroløkke ◽  
Janne Rothmar Herrmann
Keyword(s):  
In Vitro Fertilization ◽  
Gender Equality ◽  
Assisted Reproduction ◽  
Reproductive Technologies ◽  
Global Market ◽  
Ethical Guidelines ◽  
Vitro Fertilization ◽  
Rhetorical Figures ◽  
Master Plots

Involuntary childlessness is a well-known phenomenon, and in Denmark, every twelfth child is born through the use of assisted reproduction. Denmark is currently positioned as one of the key global actors both as far as the use of in-vitro ­fertilization (IVF) is concerned as well as within the global ­market in sperm and reproductive technologies. In this article, the authors develop a feminist legal rhetorical framework to discuss how the Danish law and ethical guidelines on adoption and assisted reproduction rhetorically produce different master plots on “natural,” “artificial,” and “monstrous” forms of kinship. The authors conclude with a discussion of the potential that a feminist legal rhetorical framework holds, including its ability to analyze how rhetorical figures and metaphors legitimize certain types of kinship as well as the ability to raise new and provo­cative questions related to gender equality within the law

scholarly journals Estrogen-Induced Abnormally High Cystic Fibrosis Transmembrane Conductance Regulator Expression Results in Ovarian Hyperstimulation Syndrome

2005 ◽  
Vol 19 (12) ◽  
pp. 3038-3044 ◽  
Author(s):  
Louis Chukwuemeka Ajonuma ◽  
Lai Ling Tsang ◽  
Gui Hong Zhang ◽  
Connie Hau Yan Wong ◽  
Miu Ching Lau ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
In Vitro Fertilization ◽  
Assisted Reproduction ◽  
Ovarian Hyperstimulation Syndrome ◽  
Ovarian Hyperstimulation ◽  
Transmembrane Conductance Regulator ◽  
Transmembrane Conductance ◽  
Vitro Fertilization ◽  
Cystic Fibrosis Transmembrane

Abstract Ovarian hyperstimulation syndrome (OHSS) remains one of the most life-threatening and potentially fatal complications of assisted reproduction treatments, arising from excessive stimulation of the ovaries by exogenous gonadotropins administrated during in vitro fertilization procedures, which is characterized by massive fluid shift and accumulation in the peritoneal cavity and other organs, including the lungs and the reproductive tract. The pathogenesis of OHSS remains obscure, and no definitive treatments are currently available. Using RT-PCR, Western blot, and electrophysiological techniques we show that cystic fibrosis transmembrane conductance regulator (CFTR), a cAMP-activated chloride channel expressed in many epithelia, is involved in the pathogenesis of OHSS. Upon ovarian hyperstimulation, rats develop OHSS symptoms, with up-regulated CFTR expression and enhanced CFTR channel activity, which can also be mimicked by administration of estrogen, but not progesterone, alone in ovariectomized rats. Administration of progesterone that suppresses CFTR expression or antiserum against CFTR to OHSS animals results in alleviation of the symptoms. Furthermore, ovarian hyperstimulation does not induce detectable OHSS symptoms in CFTR mutant mice. These findings confirm a critical role of CFTR in the pathogenesis of OHSS and may provide grounds for better assisted reproduction treatment strategy to reduce the risk of OHSS and improve in vitro fertilization outcome.

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