1,720,970 research outputs found
Effect of myo-inositol and melatonin versus myo-inositol, in a randomized controlled trial, for improving in vitro fertilization of patients with polycystic ovarian syndrome
No full textPolycystic ovarian syndrome (PCOS) induces anovulation in women of reproductive age, and is one of the pathological factors involved in the failure of in vitro fertilization (IVF). Indeed, PCOS women are characterized by poor quality oocytes. Therefore, a treatment for enhancing oocyte quality becomes crucial for these patients. Myo-Inositol and melatonin proved to be efficient predictors for positive IVF outcomes, correlating with high oocyte quality. We tested the synergistic effect of myo-inositol and melatonin in IVF protocols with PCOS patients in a randomized, controlled, double-blind trial. Five-hundred twenty-six PCOS women were divided into three groups: Controls (only folic acid: 400 mcg), Group A (Inofolic® plus, a daily dose of myo-inositol: 4000 mg, folic acid: 400 mcg, and melatonin: 3 mg), and Group B (Inofolic®, a daily dose of myo-inositol: 4000 mg, and folic acid: 400 mcg). The main outcome measures were oocyte and embryo quality, clinical pregnancy and implantation rates. The treatment lasted from the first day of the cycle until 14 days after embryo transfer. Myo-inositol and melatonin have shown to enhance, synergistically, oocyte and embryo quality. In consideration of the beneficial effect observed in our trial and on the bases of previous studies, we decided to integrate routinely MI and M supplementation in the IVF protocols. The same treatment should be taken carefully in consideration in all procedures of this kin
Ovarian Stimulation Protocol in IVF: An Up-to-Date Review of the Literature
No full textThe Assisted Reproductive Technology (ART) was born in order to help couples with infertility issues in having a baby. The first treatments of IVF used the spontaneous cycle of the women, with the retrieval of only one oocyte. Further studies have shown that it is possible to induce ovulation by administrating gonadotropins during the menstrual cycle, in order to obtain a higher number of oocytes. Many stimulation protocols have been introduced for controlled ovarian hyperstimulation of patients undergoing in vitro fertilization treatment. This review describe the different stimulation protocols using follicle-stimulating hormone (FSH) in combination with Gonadotropin releasing hormone (GnRH) either agonist or antagonist, oral supplementations and ovarian triggering. Using GnRH antagonist protocols have been demonstrated to improve significantly the clinical pregnancy rates for expected poor and high-responders, and in those women at high risk of developing ovarian hyperstimulation syndrome (OHSS). Two meta-analyses showed a better outcome in terms of the live birth rate when highly purified human menopausal gonadotropin (HMG) was used for ovarian stimulation compared with recombinant follicle stimulating hormone (rFSH) in the GnRH agonist long protocol. One of the most efficient stimulation protocol is the use of a combined protocol of human derived urinary FSH (uFSH) and rFSH. Combined protocol has resulted in a significant increase in the proportion of mature metaphase II oocytes and grade 1 embryos when compared to either rFSH or uFSH alone. A significantly higher delivery rate was achieved in rFSH+uFSH compared to the other protocols in poor and normal responders. Studying the combination of melatonin with myo-inositol and folic acid has also showed a higher percentage of mature oocytes in the melatonin group and a higher percentage of G1 embryos as well. However, It remains a crucial step to confirm the efficacy of such protocols for clinical application and it is still needs to comparison studies on larger scale with more focused on the differences in patients' response criteria and additional confounding variables, in order to draw more defined conclusions
Urinary hMG (Meropur) versus recombinant FSH plus recombinant LH (Pergoveris) in IVF: A multicenter, prospective, randomized controlled trial
No full textTo compare IVF outcome in ovarian stimulation protocols with recombinant FSH plus recombinant LH versus hMG, 122 patients were randomized into two study groups: group A, patients treated with urinary hMG, and group B, patients treated with rFSH plus rLH. The two groups proved to be comparable to the main IVF outcome (pregnancy rate, implantation rate, oocytes, and embryos quality), with an increasing risk of ovarian hyperstimulation in the Pergoveris group. Copyright © 2010 American Society for Reproductive Medicine, Published by Elsevier Inc
Intra- and extraoral implantology and anaplastology: clinical and instrumental evaluation to 7 years
No full textaim. The aim of this work was to evaluate the follow-up of patients treated 7 years after the application of the implant, focusing on the following specific issues: the quality of osseointegration and the presence of adverse reactions, including views from a radiological point of view, the status of the implant and the impact of its success on the quality of life of the patient.
Methods. From January 2002 to December 2009, in the Epithesis Center of Sant’Andrea Hospital, 65 surgical patients (31 women and 34 men, mean age 44 years) were treated. This study includes only those with control at 7 years for a total of 12 patients including 7 women and 5 men with a mean age of 43 years. The diagnostic and therapeutic procedures were standard for all patients.
Results. With regard to the postoperative clinical control 57 patients had no detectable adverse skin reaction, 3 patients had mild skin redness, inflammatory exudate was present in 1 patient, and inflammation became severe in 1 other patient. Postoperative radiological assessment at 6 months showed no signs of osseointegration in 197 facilities out of 198 (98.9%).
Conclusion. Epitheses are an important alternative to conventional reconstructive surgery for patients with craniofacial deficits. Using implant osseointegration could solve the problems caused by using adhesives and the presence of phenomena of irritation to the skin in contact with such substances, greatly improving the quality of life of patients
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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