scholarly journals Assisted Reproductive Technologies as Veritable Tools for Improving Production Efficiencies of N’dama and Muturu Cattle Breeds in Nigeria-A Review

2021 ◽  
Author(s):  
Cornelius Nwoga ◽  
Nnanna Ikeh ◽  
Matthew Onodugo ◽  
Paul Baiyeri ◽  
Ndubuisi Machebe

Assisted reproductive technologies (ART) that have come to stay and are still being improved upon in developed countries are still in their infancy stage in developing countries like Nigeria. Nigeria’s cattle population is estimated to be around 18.4 million. The number is far insufficient to meet the country’s demand for meat, milk, and other cow products, let alone contribute to GDP. N’dama and Muturu are both Nigerian breeds that are resistant to trypanosomosis. They are humpless longhorn and humpless shorthorn types of beef cattle. The dairy and beef cow industries’ inadequate adoption of ART is partly to blame for Nigeria’s low cattle output. Sex determination, multiple-ovulation and embryo transfer (MOET), oestrus synchronization, artificial insemination (AI), in vitro fertilization (IVF), cloning, and genetic engineering are all examples of assisted reproductive technologies. It has been reported in humans, rodents and domestic animals, abnormal fetuses, newborns and adult offspring arise from ART. Improper matching of breeding animals mostly leads to overfat calves. This review centers on the applications and potentials of ART in the production of trypanotolerant N’dama and Muturu cattle breeds. Some unorthodox medicines which have proven effective in human reproduction can circumvent the shortfalls in the adoption of ART.

Author(s):  
Jekaterina Avdotina ◽  
Aleksandra Mezecka-Oleinika ◽  
Vija Silina ◽  
Zane Vitina

Background: Women with endometriosis experience painful symptoms and/or infertility, others have no symptoms at all. According to European Society of Human Reproduction and Embryology guidelines, surgery and assisted reproductive technologies (ART) are an appropriate treatment in cases of endometriosis-associated infertility. There are controversial data on the results of surgery and ART in patients with endometriosis.Methods: Retrospective analysis including 99 infertile patients aged between 25 and 48 years old. All of them had laparoscopic surgery as the primary option. 51 of them undergoing in vitro fertilization or intracytoplasmic sperm injection or frozen embryo transfer from 2003 through 2018 at SIA ‘Clinic EGV’.Results: The mean age of women was 34.2±4.5. In 56 (33.5%) cases was only surgery with 28 (50.9%) biochemical pregnancies and 26 (48.1%) live birth. In 111 (66.5%) cases there were surgery with ART with 48 (47.6%) biochemical pregnancies and 23 (22.7%) live birth. In 1 group patients mean age 30.7±4.6 and 2 group with mean age 35.1±4.2 (p=0.000). It was found that there is significant difference between endometriosis phenotype, infertility type, duration of infertility, repeated laparoscopic surgery, ART cycles, retrieved oocyte count and biochemical pregnancy rate.Conclusions: Patients with endometriosis related infertility should undergo surgical treatment as the primary option. Those patients who do not become pregnant after surgery must be treated with assisted reproductive technology. The optimal time to perform ART is first year after endometriosis surgery.


1999 ◽  
Vol 25 (4) ◽  
pp. 455-477
Author(s):  
Judith F. Daar

The world of assisted reproductive technologies (ART) has forced our society to confront scenarios that were unimaginable a mere quarter century ago. The birth of Louise Brown in 1978, the first child conceived through in vitro fertilization (IVF), introduced to the world the notion of asexual reproduction. The bitter battle over the parental status of Baby M., a baby born by a surrogate mother in the early 1980s, engendered a public debate over the interaction between contract law, family law and reproductive liberties that still rages today. In 1992, the highly publicized divorce of Junior and Mary Sue Davis focused national attention on the issue of proper disposition of frozen embryos. This case highlighted the fact that conception and pregnancy could be separated by a significant amount of time as a result of cryopreservation. While each of these events marked a step forward in the march toward total technological mastery of human reproduction, they also suggest that future struggles involving ART will grow increasingly fierce and complicated as our fund of knowledge increased. This Article suggests that current disputes over the disposition of frozen embryos are emblematic of that struggle.


Stanovnistvo ◽  
2004 ◽  
Vol 42 (1-4) ◽  
pp. 45-65
Author(s):  
Mirjana Devedzic

The development of reprogenetics during the last two decades of the XX century has brought a new age of reproduction. The paper surveys different types of reprogenetics in a wider sense, i.e. different assisted reproductive technologies (ART) that include manipulation of female reproductive cell out of a woman's womb. Development of reprogenetics is documented by available quantitative indicators of the number and success of ART procedures in developed countries at the beginning of the XXI century. Since 1978, when the first baby was born from in vitro fertilization, the number of children born that way has reached 1% of all children, and in some countries even over 3%. Moreover, existing documentation is incomplete and does not include all forms of assisted reproduction - in reality, the importance of assisted reproduction is even higher and becomes demographically significant. Hence the paper indicates existing and potential effects of the ART development on the demographic development i.e. on specific demographic aspects of this phenomenon. It also points out the effects on the level of fertility, on the changes of direct fertility determinants, and on the levels of mortality and infant mortality, as well as a new understanding of birth control, the possibility of affecting biological structures, and the changes of the fundaments of marriage and family. Development perspectives of reprogenetics are also being raised in the context of bioethical discussions and indicate ethical dilemmas related to assisted reproduction. Solutions to the dilemmas define the scope of applying new reproductive technologies in the future.


Anthropology ◽  
2019 ◽  
Author(s):  
Amy Speier ◽  
Caridad Zamarripa

Reproductive technologies are those technologies that aid in animal and human reproduction. Assisted reproductive technologies (ARTs) are more narrowly defined as those technologies that help people suffering from social or bodily infertility create a family. Socially infertile includes single women and men as well as homosexual couples who rely on donated gametes for the creation of a future child. Intrauterine Insemination (IUI) is usually the first step taken by couples having trouble conceiving. The most general type of reproduction technology is in vitro fertilization (IVF), which means that the egg is retrieved from a woman’s uterus and sperm is introduced to these eggs in a petri dish. In the case of male infertility, intracytoplasmic sperm injections (ICSI) may be employed, which means that sperm are injected directly into the egg. IVF may include the use of donated sperm, oocytes, and embryos. In addition to gamete donation, surrogacy may be employed in cases where an intended mother or intended gay fathers cannot carry a pregnancy to term. In addition to being used to create families, contraception is also considered a reproductive technology. Anthropologists have been conducting ethnographic analyses of reproductive technologies by studying the people intimately engaged with these varying technologies. Scholarship revolves around major questions about markets and gift exchange, kinship, and how our understandings of family have shifted with the advent of reproductive technologies, as well as globalization and the ways in which bodies, people, and technologies traverse the globe.


2017 ◽  
Vol 66 (4) ◽  
pp. 513-531
Author(s):  
Joseph Nixon ◽  
Olinda Timms

Le tecniche di riproduzione assistita (ART) offrono la possibilità di una maternità surrogata alle coppie sterili o senza figli. Alla fine degli anni ‘80, specialisti qualificati in India hanno approfittato della disponibilità di madri surrogate e dell’assenza di regole per creare un mercato di maternità surrogata per i clienti sia indiani sia esteri. Il Ministero della Salute è intervenuto con le linee guida solo dopo forti proteste di gruppi di donne e cittadini, facendo seguito alle storie su ostelli surrogati, bambini abbandonati e sfruttamento. Nel frattempo, le cliniche dell’infertilità si sono moltiplicate, offrendo gameti di donatori, fecondazione in vitro e maternità surrogata ad un costo molto inferiore rispetto ai paesi occidentali. Dai primi anni del 2000, l’India è divenuta la destinazione più popolare per la pratica della maternità surrogata. In risposta alle proteste e consapevole del divieto di accordi di maternità surrogata negli altri paesi, il Governo indiano ha emanato le linee guida ART che erano via via restrittive; ma tali disposizioni non sono state in grado di arginare il business ormai florido. Infine, nel 2016, il governo ha proposto un disegno di legge per porre fine alla maternità surrogata commerciale. Il regolamento Bill 2016 considera esclusivamente gli accordi di maternità surrogata, non considerando tutti gli altri aspetti della riproduzione assistita e delle cliniche coinvolte. La legislazione è stata rivolta principalmente alle questioni sociali e agli elementi di sfruttamento della maternità surrogata commerciale, più che al processo tecnico. Se approvata, tale legge vieterà efficacemente maternità surrogata commerciale in India. ---------- Assisted Reproductive Technologies (ART) offer the possibility of unrelated surrogacy arrangements to infertile couples and childless human relationships. In the late 80s, qualified specialists in India took advantage of the availability of willing surrogates and the absence of regulations, to create a market in commercial surrogacy for clients from within the country and abroad. The Ministry of Health stepped in with guidelines only after strong protests from women’s groups and citizens, following media stories of surrogate hostels, abandoned children and exploitation. Meanwhile, ‘infertility’ clinics mushroomed, offering donor gametes, in-vitro fertilization and surrogacy services at a fraction of the cost in western countries. By early 2000s, India had emerged as the most popular destination for commercial surrogacy arrangements. In response to protests from doctors, citizens and human rights groups, and mindful of the ban on commercial surrogacy arrangements in most developed countries, the Government issued ART guidelines that were progressively restrictive; but these did not have the teeth to rein in the lucrative business that commercial surrogacy had transformed into. Finally, in 2016, the Government proposed a Bill that would bring an end to commercial surrogacy. The Surrogacy (Regulation) Bill 2016 addressed surrogacy arrangements exclusively, taking it out of proposed ART Bill that was aimed at comprehensively regulating all other aspects of assisted reproduction and the clinics involved. The legislation was directed mainly at the social issues and exploitative elements specific to commercial surrogacy arrangements, rather than the technical process. If passed, the Surrogacy Bill will effectively ban commercial surrogacy in India.


Author(s):  
Svetlana Dragojevic-Dikic ◽  
Saveta Draganic ◽  
Srdjan Dikic ◽  
Vladimir Pilija

One of the main characteristics of the new millennium is the affirmation of human rights in all aspects of human existence, with the intention of turning declarative statements into reality. Development of up-to-date assisted reproductive technologies (ART) and their application in infertility treatment have raised numerous ethical, legal, religious, social and other questions. In vitro fertilization, donation of gametes, embryos and pre-embryos, cryopreservation of gametes, embryos, ovarian and testicular tissues, embryo transfer, genetic reproductive techniques, cloning and other sophisticated methods used in infertility treatment require cooperation between the medical and legal professions. Ethical aspects of human reproduction and assisted fertilization are based on full respect of the life of an individual even before conception, from pre-embryo stage, via embryo stage and fetus stage to a newborn infant. Regarding investigative and clinical projects, this standpoint implies the legalization of all ART procedures, unencumbered exchange of information and consensus about their application, and adherence to the basic ethical principles of autonomy benefit, justice and common welfare. Ethical postulates provide unequivocal directions in the creation of new life and resolve all possible ethical dilemmas, protecting the rights of doctors and participant in relevant procedures alike and reasserting the crucial principle - respect of human dignity.


GYNECOLOGY ◽  
2018 ◽  
Vol 20 (1) ◽  
pp. 113-116
Author(s):  
L A Bagdasaryan ◽  
I E Korneyeva

The aim of the study is to systematically analyze the data available in the modern literature on the relationship between endometrial thickness and the frequency of pregnancy in the program of assisted reproductive technologies (ART). Materials and methods. The review includes data from foreign and domestic articles found in PubMed on this topic. Results. The article presents data on the relationship between the thickness of the endometrium and the frequency of pregnancy in ART programs. The greatest number of studies is devoted to the evaluation of the relationship between the thickness of the endometrium and the frequency of pregnancy on the day of the ovulation trigger. Data are presented on the existence of a correlation between the thickness of the endometrium measured on the day of the ovulation trigger and the frequency of clinical pregnancy, as well as data on the need to evaluate the structure of the endometrium and the state of subendometric blood flow. The importance of multilayered (three-layered) endometrium as a prognostic marker of success in in vitro fertilization/intracytoplasmic sperm injection programs in the ovum is emphasized. The conclusion. The thickness of the endometrium can not be used as an argument for canceling the cycle or abolishing embryo transfer to the uterine cavity. Further studies in this direction are needed with a study of the morphological and molecular genetic characteristics of the endometrium, which in the future will allow us to evaluate the relationship between the thickness of the endometrium and the probability of pregnancy.


Author(s):  
N.A. Altinnik , S.S. Zenin , V.V. Komarova et all

The article discusses the factors that determine the content of the legal limitations of pre-implantation genetic diagnosis in the framework of the in vitro fertilization procedure, taking into account international experience and modern domestic regulatory legal regulation of the field of assisted reproductive technologies. The authors substantiates the conclusion that it is necessary to legislate a list of medical indications for preimplantation genetic diagnosis, as well as the categories of hereditary or other genetic diseases diagnosed in the framework of this procedure.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sandra Monfort ◽  
Carmen Orellana ◽  
Silvestre Oltra ◽  
Mónica Rosello ◽  
Alfonso Caro-Llopis ◽  
...  

AbstractDevelopment of assisted reproductive technologies to address infertility has favored the birth of many children in the last years. The majority of children born with these treatments are healthy, but some concerns remain on the safety of these medical procedures. We have retrospectively analyzed both the fertilization method and the microarray results in all those children born between 2010 and 2019 with multiple congenital anomalies, developmental delay and/or autistic spectrum disorder (n = 486) referred for array study in our center. This analysis showed a significant excess of pathogenic copy number variants among those patients conceived after in vitro fertilization with donor oocyte with respect to those patients conceived by natural fertilization (p = 0.0001). On the other hand, no significant excess of pathogenic copy number variants was observed among patients born by autologous oocyte in vitro fertilization. Further studies are necessary to confirm these results and in order to identify the factors that may contribute to an increased risk of genomic rearrangements, as well as consider the screening for genomic alterations after oocyte donation in prenatal diagnosis.


2021 ◽  
Vol 10 (12) ◽  
pp. 2687
Author(s):  
Kaan Aydos ◽  
Oya Sena Aydos

Retrieving spermatozoa from the testicles has been a great hope for patients with non-obstructive azoospermia (NOA), but relevant methods have not yet been developed to the level necessary to provide resolutions for all cases of NOA. Although performing testicular sperm extraction under microscopic magnification has increased sperm retrieval rates, in vitro selection and processing of quality sperm plays an essential role in the success of in vitro fertilization. Moreover, sperm cryopreservation is widely used in assisted reproductive technologies, whether for therapeutic purposes or for future fertility preservation. In recent years, there have been new developments using advanced technologies to freeze and preserve even very small numbers of sperm for which conventional techniques are inadequate. The present review provides an up-to-date summary of current strategies for maximizing sperm recovery from surgically obtained testicular samples and, as an extension, optimization of in vitro sperm processing techniques in the management of NOA.


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