Juan Carlos Castillo, Maria Martínez-Moya, Ana Fuentes, Belen Moliner, María Gonzalez, Andrea Bernabeu, Rafael Bernabeu
{"title":"Exploring uterine contractility frequency in infertile population: A comparative study among different control groups with and without a C-section defect.","authors":"Juan Carlos Castillo, Maria Martínez-Moya, Ana Fuentes, Belen Moliner, María Gonzalez, Andrea Bernabeu, Rafael Bernabeu","doi":"10.5935/1518-0557.20240037","DOIUrl":"https://doi.org/10.5935/1518-0557.20240037","url":null,"abstract":"<p><strong>Objective: </strong>Women undergoing IVF who have had a previous c-section (CS) have a lower live birth rate than those with a previous vaginal delivery. However, the precise underlying mechanisms need clarification. Does a previous CS affect the pattern of uterine contractility?.</p><p><strong>Methods: </strong>Prospective evaluation in patients undergoing frozen blastocyst embryo transfer in medicated endometrial preparation cycles. Twenty patients were included in groups: A/nulliparous. B/previous vaginal delivery. C/ previous CS without a niche, whereas fifteen patients were recruited in group D (CS and a niche). Patients employed estradiol compounds and 800 mg vaginal progesterone. A 3D-scan was performed the transfer-day where uterine contractility/minute was recorded.</p><p><strong>Results: </strong>Baseline characteristics (age, BMI, smoking, endometrial thickness) were similar. Mean frequency of uterine contractions/minute was similar between groups (1.15, 1.01, 0.92, and 1.21 for groups A, B, C, and D, respectively). There was a slight increase in the number of contractions in patients with a sonographic niche versus controls, not reaching statistical significance (p=0.48). No differences were observed when comparing patients with a previous C-section (regardless of the presence of a niche) to those without a C-section, either nulliparous (p=0.78) or with a previous vaginal delivery (p=0.80). The frequency of uterine contractions was similar between patients who achieved a clinical pregnancy and those who did not (1.19 vs. 1.02 UC/min, p=0.219, respectively).</p><p><strong>Conclusions: </strong>Our study found no significant difference in the frequency of uterine contractility between patients with or without a previous C-section or sonographic diagnosed niche. Further investigation is necessary to understand the physiological mechanisms affecting implantation in patients with isthmocele.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141724714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Adriana Leal Griz Notaro, Filipe Tenório Lira Neto, Giuliano Marchetti Bedoschi, Maria Jéssica da Silva, Mariana Corrêa Nunes, Catharina Cavalcanti Pessoa Monteiro, José Natal Figueiroa, Alex Sandro Rolland Souza
{"title":"Evaluation of ovarian reserve in women with thyroid autoimmunity.","authors":"Adriana Leal Griz Notaro, Filipe Tenório Lira Neto, Giuliano Marchetti Bedoschi, Maria Jéssica da Silva, Mariana Corrêa Nunes, Catharina Cavalcanti Pessoa Monteiro, José Natal Figueiroa, Alex Sandro Rolland Souza","doi":"10.5935/1518-0557.20240032","DOIUrl":"10.5935/1518-0557.20240032","url":null,"abstract":"<p><strong>Objective: </strong>To compare the ovarian reserve of women of reproductive age with and without thyroid autoimmunity (TAI).</p><p><strong>Methods: </strong>We performed a retrospective analysis of medical records from an assisted reproduction clinic from February 2017 to December 2021. Women aged between18 and 47 years with data on antithyroperoxidase and antithyroglobulin (anti-Tg) antibodies and assessment of ovarian reserve by anti-müllerian hormone (AMH) and antral follicle count (AFC) were included. Among the 188 participants included, 63 were diagnosed with TAI, and 125 had both antibodies negative. AMH and AFC were compared between groups. Subanalysis based on age, types of antibodies, and thyroid function markers were performed. In addition, bivariate analysis and regression models were used.</p><p><strong>Results: </strong>Overall, there was no difference in the median levels of AMH or AFC between the two groups. However, in the subgroup analysis by age, we observed a trend towards lower median levels of AMH in women over 39 years with TAI (0.9 ng/mL vs. 1.5 ng/mL, p=0.08). In a subanalysis according to antibodies, we found a significantly lower median AFC in the group with anti-Tg than in the group without this antibody (8.0 follicles vs. 11.5 follicles, p=0.036). We also found a significantly higher prevalence of anti-Tg in patients with low ovarian reserve compared to those with normal reserve (60.7% vs. 39.3%, p=0.038).</p><p><strong>Conclusions: </strong>The ovarian reserve of women with TAI appears to be insidiously compromised over the years, with a decreased ovarian reserve in women with anti-Tg.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":" ","pages":"442-449"},"PeriodicalIF":1.8,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11349256/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141260841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maria do Carmo Borges de Souza, Roberto de Azevedo Antunes, Marcelo Marinho de Souza, Ana Cristina Allemand Mancebo, Ana Luiza Barbeitas, Veronica de Almeida Raupp, Dandhara Martins Rebello
{"title":"Vaginal micronized progesterone on preventing luteinizing hormone untimely surge in ART cycles: A prospective proof-of-concept study.","authors":"Maria do Carmo Borges de Souza, Roberto de Azevedo Antunes, Marcelo Marinho de Souza, Ana Cristina Allemand Mancebo, Ana Luiza Barbeitas, Veronica de Almeida Raupp, Dandhara Martins Rebello","doi":"10.5935/1518-0557.20240045","DOIUrl":"https://doi.org/10.5935/1518-0557.20240045","url":null,"abstract":"<p><strong>Objective: </strong>A new approach to evaluate whether Progestin-Primed Ovarian Stimulation with micronized vaginal progesterone was as effective as using dydrogesterone in suppress LH pulse surge in young women under stimulation in an oocyte donor programme.</p><p><strong>Methods: </strong>This prospective study included 21 patients aged 19 to 32 years-old stimulated with Elonva® 150, associated or not with Menopur® or Merional® (75 or 150IU) since the beginning of the cycle, plus HMG 150-225IU after the 8th day or just HMG 150-300IU per day. Patients were placed in a PPOS protocol with micronized vaginal progesterone (MVP) 200 mg (Gynpro® Exeltis or Junno Farmoquimica) every 12 hours or dydrogesterone (Duphaston® Abbott) 10 mg every 8 hours from the start of stimulation until the day after the GnRH trigger with Triptorelin 0.2 mg (Gonapeptyl daily®). The primary endpoint was the prevention of untimely LH surge, and secondarily the number of 16 mm follicles, retrieved oocytes and metafase II.</p><p><strong>Results: </strong>Fourteen oocyte donor patients were prescribed MVP while seven others received dydrogesterone (DYG).The gonadotropin protocols included 04 with Corifollitropin alfa 150 plus HMG since the beginning and complemented after the 7th day, and 17 times of just HMG. There was no diferences in the number of follicles >10≤15mm, ≥16mm or number of metafase II oocytes. There was no untimely LH surge on both groups and no OHSS was developed after the agonist trigger.</p><p><strong>Conclusions: </strong>Progestin-Primed Ovarian Stimulation with micronized vaginal progesterone seems to be a compelling choice for preventing premature ovulation without compromising oocyte quality in women undergoing ovarian stimulation.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141321794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ricardo Andre Medeiros Negreiros, Viviane Rosado Negreiros d'Assunção, Luis Eduardo Negreiros d'Assunção, Maria Madalena Pessoa Caldas, Eduardo Sérgio Soares Sousa
{"title":"Effect of day 5 or 6 blastocyst embryo transfer on pregnancy outcomes in euthyroid women undergoing IVF: A single centre retrospective cohort.","authors":"Ricardo Andre Medeiros Negreiros, Viviane Rosado Negreiros d'Assunção, Luis Eduardo Negreiros d'Assunção, Maria Madalena Pessoa Caldas, Eduardo Sérgio Soares Sousa","doi":"10.5935/1518-0557.20240036","DOIUrl":"https://doi.org/10.5935/1518-0557.20240036","url":null,"abstract":"<p><strong>Objective: </strong>This study examined whether blastocysts transferred on day 5 or day 6 of embryo development, as well as positivity for anti-thyroid peroxidase antibodies, affect gestational outcomes in euthyroid women undergoing in vitro fertilisation.</p><p><strong>Methods: </strong>Of 428 women who underwent in vitro fertilisation assessed in this retrospective cohort study, 212 (49.5%) underwent embryo transfer on day 5 of blastulation and 216 (50.5%) on day 6. Dichotomization based on anti-thyroid peroxidase antibodies status was also performed, with 370 (86.4%) women testing negative and 58 (13.6%) testing positive. Clinical and hormonal data and rates of clinical pregnancy, miscarriage, and live births were compared between the groups.</p><p><strong>Results: </strong>When evaluating gestational outcomes based on the day of blastulation, a statistically significant difference was observed in clinical pregnancy rates [51.4% (day 5) vs. 40.7% (day 6); p=0.033]. However, there was no significant difference in the relative frequencies of miscarriages (p=1.000), live births (p=1.000), or preterm births (p=1.000). Using Cramer's V test, a weak association was found between the day of blastulation and clinical pregnancy outcomes (V2=10.7%; p=0.027). There were no statistically significant differences between the anti-thyroid peroxidase antibodies-negative and -positive groups in terms of clinical pregnancy rates (p=0.396), miscarriages (p=0.129), and live births (p=0.129).</p><p><strong>Conclusions: </strong>Higher rates of clinical pregnancy were observed in women who underwent embryo transfers performed on day 5 compared to those on day 6. However, no effect was observed with gestational outcomes. Further, anti-thyroid peroxidase antibody positivity did not have a statistically significant impact on gestational outcomes.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141288743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Roberto de A Antunes, Brenda M L de Melo, Maria do Carmo B de Souza, Marcelo M de Souza, Gabriela P S Melo, Thamires F M Jandre, Ana Cristina A Mancebo, Flavia L Conceição, Tania M Ortiga-Carvalho
{"title":"Vitamin D and follicular recruitment in the in vitro fertilization cycle.","authors":"Roberto de A Antunes, Brenda M L de Melo, Maria do Carmo B de Souza, Marcelo M de Souza, Gabriela P S Melo, Thamires F M Jandre, Ana Cristina A Mancebo, Flavia L Conceição, Tania M Ortiga-Carvalho","doi":"10.5935/1518-0557.20240005","DOIUrl":"10.5935/1518-0557.20240005","url":null,"abstract":"<p><strong>Objective: </strong>Vitamin D (VD) is a fat-soluble steroid hormone, synthesized by the skin, most known for its role in bone mineral balance. Vitamin D receptors (VDR) are also found in the female reproductive system, but their role remains unclear. The objective of this study was to analyze the relationship between serum vitamin D levels and the number of oocytes retrieved after ovarian stimulation.</p><p><strong>Methods: </strong>This is a retrospective study involving 267 patients undergoing in vitro fertilization (IVF) carried out in the Fertipraxis clinic, a private practice facility. The patients were initially divided into two groups according to their VD levels. Group 1 included 152 patients with VD levels < 30 ng/mL and group 2 had 115 patients with VD levels > 30 ng/mL. They were further analyzed and separated considering their age, anthropometric data, ovarian reserve, amount of gonadotropin used, and follicles obtained until trigger day.</p><p><strong>Results: </strong>In our analysis, there were no difference in the number of follicles and oocytes retrieved, nor in the number of mature oocytes obtained from patients with both vitamin D deficiency and sufficiency.</p><p><strong>Conclusions: </strong>The results of our study show no difference among number of follicles, oocytes retrieved and mature oocytes obtained after ovarian stimulation according to their vitamin D serum levels. Further higher-quality studies are needed to evaluate the possible roles of serum vitamin D levels in other stages of human fertilization process.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":" ","pages":"269-275"},"PeriodicalIF":1.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152436/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139933544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Empty follicle syndrome following GnRH agonist stimulation, in a patient with PCOS treated with HCG rescue protocol, resulting in 3PN zygote formation: a case report.","authors":"Nasrin Saharkhiz, Nazanin Hajizade, Mahsa Kazemi, Samaneh Esmaeili, Bahareh Karimi","doi":"10.5935/1518-0557.20230051","DOIUrl":"10.5935/1518-0557.20230051","url":null,"abstract":"<p><p>Empty follicle syndrome is a rare condition characterized by failure to retrieve oocytes despite repeated careful aspiration of mature precursor follicles during controlled ovarian stimulation. This report presents a case of empty follicle syndrome in a patient with polycystic ovary syndrome using a gonadotropin-releasing hormone agonist as a trigger for final oocyte maturation. No oocytes were retrieved from the right ovary and the procedure was discontinued. The patient was administered an injection with 10,000 units of HCG and 3 oocytes were obtained after 24 hours. All oocytes were mature (MII); fertilization was performed with sperm from the patient's husband resulting in 3PN zygotes. The formation of 3PN zygotes from ICSI might be due to oocyte cytoplasmic disorders caused by long-term exposure to gonadotropins and increased duration of stimulation. Although our patient had false empty follicle syndrome and the hCG rescue protocol led to the retrieval of oocytes, the oocytes were not of good quality. As previously described, empty follicle syndrome is not a predictor of success in subsequent cycles. Our patient's next cycle was uneventful.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":" ","pages":"365-367"},"PeriodicalIF":1.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152426/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139472355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maria do Carmo Borges de Souza, Roberto de Azevedo Antunes, Marcelo Marinho de Souza, Hitomi Miura Nakagawa, Adelino Amaral Silva, Emerson Barchi Cordts, Caio Parente Barbosa
{"title":"Corpus luteum and progesterones in embryo transfer cycles: current challenges of different luteal phase support protocols.","authors":"Maria do Carmo Borges de Souza, Roberto de Azevedo Antunes, Marcelo Marinho de Souza, Hitomi Miura Nakagawa, Adelino Amaral Silva, Emerson Barchi Cordts, Caio Parente Barbosa","doi":"10.5935/1518-0557.20240044","DOIUrl":"10.5935/1518-0557.20240044","url":null,"abstract":"","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":"28 2","pages":"211-214"},"PeriodicalIF":1.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152424/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141076735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Licia Cristina Silva de Lima Oliveira, Elton Carvalho Costa, Fernanda Domingues Gomes Martins, Alcenir Sales da Rocha, Girlandia Alexandre Brasil
{"title":"Probiotics supplementation in the treatment of male infertility: A Systematic Review.","authors":"Licia Cristina Silva de Lima Oliveira, Elton Carvalho Costa, Fernanda Domingues Gomes Martins, Alcenir Sales da Rocha, Girlandia Alexandre Brasil","doi":"10.5935/1518-0557.20240013","DOIUrl":"10.5935/1518-0557.20240013","url":null,"abstract":"<p><p>Infertility is a widespread global issue that affects approximately 15% of sexually active and active couples, which contributes to about 50% of cases. Currently, the condition remains prevalent and often inadequately treated. This systematic review aims to evaluate existing studies investigating the effects of probiotic supplementation in men. A comprehensive search was conducted across major databases, including PubMed, Cochrane, Science Direct, and Scielo, using relevant keywords such as 'probiotic' OR 'Lactobacillus' OR 'Bifidobacterium' AND 'Male infertility' OR 'male fertility' OR 'sperm quality' OR 'sperm motility' OR 'oligoasthenoteratozoospermia' and their Portuguese equivalents. Four randomized clinical studies met the inclusion criteria, focusing on men diagnosed with idiopathic male infertility (oligozoospermia, teratozoospermia, and asthenozoospermia). The findings revealed that probiotic administration exhibited promising antioxidant properties by combating reactive oxygen species (ROS), consequently protecting sperm DNA from damage that correlates with declining sperm quality. Significant improvements were observed across all sperm parameters, with notable enhancement in motility. Consequently, probiotic supplementation emerges as a potential therapeutic alternative for men diagnosed with idiopathic infertility, demonstrating positive effects on sperm quality.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":" ","pages":"341-348"},"PeriodicalIF":1.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152433/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140294913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High ovarian responders have the highest risk of premature progesterone rise.","authors":"Alfredo Cortés-Vazquez, Greys Thelma Vásquez-Ramírez, Alfredo Leonardo Cortés-Algara, Jesús-Daniel Moreno-García, Panagiotis Drakopoulos","doi":"10.5935/1518-0557.20240004","DOIUrl":"10.5935/1518-0557.20240004","url":null,"abstract":"<p><strong>Objective: </strong>Late follicular phase progesterone elevation is a complication that affects approximately 38% of IVF cycles. There is a lack of consensus on the appropriate cut-off levels for progesterone on hCG day. Although premature progesterone rise occurs in all kinds of ovarian responses, there is a knowledge gap regarding the ovarian response with the highest risk of this phenomenon. Our study aims to assess the relative risk of each kind of ovarian response for premature progesterone rise and evaluate the prevalence of premature progesterone rise in each ovarian response.</p><p><strong>Methods: </strong>A retrospective, cross-sectional, comparative and analytic study was performed at the Reproductive Endocrinology Department in Centro Médico Nacional 20 de Noviembre in Mexico City. All conventional-antagonist cycles were grouped according to their ovarian response and were evaluated from 2015 to 2020. Pearson's Squared-chi, Cramer's V, cross-table and the relative risk were calculated.</p><p><strong>Results: </strong>The prevalence of premature progesterone rise oscillated from 20.8 to 67.9% for low and high ovarian responders, respectively. After calculating the relative risk, high ovarian responders had a 1.38 higher risk for premature progesterone rise than other groups.</p><p><strong>Conclusions: </strong>High ovarian responders have the highest risk for premature progesterone rise compared to normal and low ovarian responders. High ovarian responders have a 67.9% prevalence of premature progesterone rise.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":" ","pages":"295-298"},"PeriodicalIF":1.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152415/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140294912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The effect of coenzyme Q10 on cryotolerance of in vivo-derived mouse embryos.","authors":"Parichehr Sadat Hosseini, Iraj Jafari Anarkooli, Alireza Abdanipour, Mitra Arianmanesh","doi":"10.5935/1518-0557.20240029","DOIUrl":"10.5935/1518-0557.20240029","url":null,"abstract":"<p><strong>Objective: </strong>Cryopreservation has some adverse effects on embryos including cell metabolism reduction, mitochondria and plasma membrane damage, excess production of 'Reactive Oxygen Species' and damage to DNA. In the present study. In this study we assessed the effect of coenzyme Q10 as an exogenous antioxidant on mouse embryos following cryopreservation.</p><p><strong>Methods: </strong>We collected mice embryos at the morula stage from uterine horns on the third day of gestation. The morulae were divided into 9 groups (1 control, 2 vehicles and 6 experimental), then vitrified. The culture and/or vitrification media of the experimental groups were supplemented by 10 or 30 μM of CoQ10. After one week, the embryos were warmed and then cultured. After 48 hours of embryo culture, the blastocyst rate, total cell number, viability; and after 72 hours of embryo culture, we assessed the hatching rate.</p><p><strong>Results: </strong>Blastocyst rate and hatching rate were significantly reduced in the groups containing 30 μM CoQ10 supplemented culture media compared to other groups (p<0.05). The hatching rate in the groups containing 10 μM CoQ10 supplemented in both culture and vitrification media was significantly higher than in the other groups (p<0.05). In groups containing 10 μM CoQ10 supplemented culture media, the viability was higher than that in the other groups (p<0.05).</p><p><strong>Conclusions: </strong>It seems that CoQ10 in a dose-dependent manner is able to improve hatching rate and viability following cryopreservation through its antioxidant and anti-apoptotic properties, and through the production of ATP.</p>","PeriodicalId":46364,"journal":{"name":"Jornal Brasileiro de Reproducao Assistida","volume":"28 2","pages":"276-283"},"PeriodicalIF":1.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152423/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141076687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}