Sleep deprivation decreases the reproductive capacity by affecting the arrival of morulas in the uterus.

A previous animal study by our group found that sleep deprivation during preimplantation was associated with decreased pregnancy maintenance. Given its impact on human society, we aimed in the current study to assess whether sleep deprivation affects blastocyst gene expression and/or the implantation process. For this, pregnant mice (gestational day 0 [GD 0]) were assigned into paradoxical sleep deprivation (SD, 72 hr; multiple platform method) and, a control (CT) group. Animals were euthanized on GD 3.5 and blood, uterus (embryos) and fallopian tube were collected. Then, 89% of CT presented blastocysts in the uterus versus 25% from SD group. Compared to CT, SD presented lighter relative uterus weight, increased plasma concentrations of corticosterone and testosterone, decreased concentrations of progesterone and luteinizing hormone, but no statistical differences in plasma concentrations of 17ß-estradiol and follicle stimulating hormone. There were no differences in uterus and blastocyst gene expression related to embryo implantation and development, and no alteration in blastocysts global DNA methylation. Considering this, the decreased pregnancy maintenance after sleep deprivation seems not to be associated with implantation losses or developmental problems related to the blastocysts. It is likely that complications in morula development and/or its movement through the fallopian tubes affect the pregnancy rate, since only 25% of SD females presented a blastocyst on the GD 3.5. In fact, three out of four females without blastocysts in the uterus presented morula in the fallopian tubes due to a phase delay. Additionally, we suggest that the observed hormonal changes may play a role in this outcome.

Ovarian environment aging: follicular fluid lipidomic and related metabolic pathways.

PURPOSE: The decline in female fecundity with age may be caused by decreased oocyte quality, a factor that may be associated with the altered composition of follicular fluid (FF). METHODS: In an effort to better understand follicular aging and the role of lipids in a given biological system, we present a prospective study that compares lipid profiles of FF from women older than 35 years (aging group, n = 12) to women equal or younger than 35 years old (control group, n = 17). FF lipids were extracted, and mass spectra were generated using a Waters Synapt G1 Q-TOF in MS mode. MS data was evaluated for both multi- and univariate statistics. The lipids identified as potential biomarkers of follicle aging were attributed by the online databases Lipid Maps, followed by pathway network analysis using Cytoscape software. RESULTS: The in vitro fertilization (IVF) parameters showed significant differences in aging, number of follicles, total number of oocytes and oocytes in MII, and number of injected oocytes. Additionally, FF from the aging group revealed 11 lipids with higher abundance, while FF from the control group included 4 lipids with higher abundance. CONCLUSIONS: We suspect that aging may influence lipid metabolism in a downstream cascade leading, ultimately, to decreased oocyte quality. The discovery of target lipids may assist oocyte selection for IVF in the future. Furthermore, systems biology approach based on post-genomic medicine may help unravel a number of altered mechanisms not previously understood.

Lipidomics analysis of follicular fluid by ESI-MS reveals potential biomarkers for ovarian endometriosis.

PURPOSE: The aim of the present study was to analyze the lipid profile of follicular fluid from patients with endometriosis and endometrioma who underwent in vitro fertilization treatment (IVF). METHODS: The control group (n = 10) was composed of women with tubal factor or minimal male factor infertility who had positive pregnancy outcomes after IVF. The endometriosis group consisted of women with endometriosis diagnosed by videolaparoscopy (n = 10), and from the same patients, the endometriomas fluids were collected, which composed the endometrioma group (n = 10). From the follicular fluid and endometriomas, lipids were extracted by the Bligh and Dyer method, and the samples were analyzed by tandem mass spectrometry. RESULTS: We observed phosphatidylglycerol phosphate, phosphatidylcholine, phosphatidylserine, and phosphatidylnositol bisphosphate in the control group. In the endometriosis group, sphingolipids and phosphatidylcholines were more abundant, while in the endometrioma group, sphingolipids and phosphatidylcholines with different m/z from the endometriosis group were found in high abundance. CONCLUSION: This analysis demonstrated that there is a differential representation of these lipids according to their respective groups. In addition, the lipids found are involved in important mechanisms related to endometriosis progress in the ovary. Thus, the metabolomic approach for the study of lipids may be helpful in potential biomarker discovery.

Follicular fluid lipid fingerprinting from women with PCOS and hyper response during IVF treatment.

PURPOSE: Polycystic ovary syndrome (PCOS) is an endocrine-metabolic disorder that leads to lower natural reproductive potential and presents a challenge for assisted reproductive medicine because patients may exhibit immature oocyte retrieval and a higher risk of ovarian hyper stimulation syndrome during in vitro fertilization (IVF) treatment. This study aimed to identify potential lipid biomarkers for women with PCOS and a hyper response to controlled ovarian stimulation. METHODS: Follicular fluid samples were collected from patients who underwent IVF, including normal responder women who became pregnant (control group, n = 11), women with PCOS and a hyper response to gonadotropins (PCOS group, n = 7) and women with only hyper response to gonadotropins (HR group, n = 7). A lipidomic analysis was performed by electrospray ionization mass spectrometry, and candidate biomarkers were analyzed by tandem mass spectrometry experiment. RESULTS: The lipid profiles indicated particularities related to differences in phosphatidylcholine (PCOS and HR), phosphatidylserine, phosphatydilinositol and phosphatidylglycerol (control), sphingolipids (PCOS) and phosphatidylethanolamine (control and HR). CONCLUSIONS: These findings contribute to the understanding of the molecular mechanisms associated with lipid metabolism in the PCOS-related hyper response, and strongly suggest that these lipids may be useful as biomarkers, leading to the development of more individualized treatment for pregnancy outcome.

Use of Triggers on in vitro Fertilization and Evaluation of Risk Factors for Sub-Optimal Maturation Rate.

OBJECTIVE: To compare the oocyte maturation rate in the treatment of in vitro fertilization (IVF) in terms of the use of human chorionic gonadotropin (hCG), agonist gonadotropin-releasing hormone (GnRH) and dual trigger and to evaluate the associated risk factors for sub-optimal maturation rates. METHODS: A retrospective cohort study with 856 women who underwent IVF. They performed oocyte retrieval and were classified into 3 groups (1 - hCG, 2 - GnRH agonist, 3 - dual trigger). The primary outcome was maturation rate per trigger, and the secondary outcomes were the pregnancy rate per oocyte retrieval and the correlations between low maturation rate as well as the clinical and treatment characteristics of women. RESULTS: The maturation rate was 77% in group 1; 76% in group 2, and 83% in group 3 (p = 0.003). Group 2 showed women with better ovarian reserve, greater number of oocytes collected, and more mature oocytes and embryos compared with the other groups (p < 0.001). The cumulative clinical pregnancy rate was no different between the groups (p = 0.755). Low ovarian reserve and low doses of follicle-stimulating hormone (FSH) administered during the stimulus were associated with a higher chance of null maturation rate. CONCLUSION: The oocyte maturation rates and IVF results were similar in all groups. Low ovarian reserve is associated with the worst treatment results.

OBJETIVO: Comparar a taxa de maturação oocitária no tratamento de fertilização in vitro (FIV) em relação so o uso de gonadotrofina coriônica humana (hCG), agonista de hormônio liberador de gonadotrofina (GnRH), e gatilho duplo e avaliar os fatores de risco associados a taxas de maturação subótimas. MéTODOS: Estudo de coorte retrospectivo com 856 mulheres submetidas à FIV. Elas foram classificadas em 3 grupos (1 - hCG, 2 - GnRH agonista, 3 - gatilho duplo). O desfecho primário foi a taxa de maturação por gatilho, e os desfechos secundários foram a taxa de gravidez por recuperação de oócitos e as correlações entre a baixa taxa de maturação bem como as características clínicas e do tratamento das mulheres. RESULTADOS: A taxa de maturação foi de 77% no grupo 1; 76% no grupo 2, e 83% no grupo 3 (p = 0,003). O grupo 2 apresentou mulheres com melhor reserva ovariana, maior número de oócitos coletados, oócitos maduros, e embriões, em comparação aos demais grupos (p < 0,001). A taxa cumulativa de gravidez clínica não foi diferente entre os grupos (p = 0,755). Baixa reserva ovariana e baixas doses de hormônio folículo-estimulante (FSH) administradas durante o estímulo foram associadas a uma maior chance de taxa de maturação nula. CONCLUSãO: As taxas de maturação oocitárias e os resultados de FIV foram semelhantes em todos os grupos. A baixa reserva ovariana está associada aos piores resultados do tratamento.

Women with temporomandibular disorders: Untargeted proton nuclear magnetic resonance spectroscopy-based metabolomics of saliva and psychological instruments dataset.

This article introduces the first dataset of 1H- nuclear magnetic resonance - based metabolomic spectroscopy of saliva samples from women with temporomandibular disorders (TMD) of muscular origin. Our data generated a metabolomic profile for TMD of muscular origin. The samples were separated in two groups: Experimental Group (EG) represented by women with TMD who were submitted to a conservative treatment compared with a Control group (CG) of women without TMD. These data also include information about time of onset the pain, measures of pain obtained before and after the treatment by the visual analogic scale. Information about some psychological instruments as pain catrastophizing scale, hospital anxiety and depression, and oral health impact profile-14 were also obtained in the CG and in the EG before submitted to the conservative treatment (EG-pre) and at the end of the treatment (EG-post). Those instruments help differentiate the groups, due to the psychosocial impact that TMD has on their lives perpetuating the physiological imbalance of the stomatognathic system. Raw data are available at: https://data.mendeley.com/datasets/wys5xd2vfg/1. It's published on mendeley, the DOI is DOI:10.17632/wys5xd2vfg.1. The data presented in this article are related to the research article entitled "1H-NMR-Based salivary metabolomics from female with temporomandibular disorders - a pilot study" (Lalue Sanches et al. 2020, https://doi.org/10.1016/j.cca.2020.08.006).

STUDY OF LIPID BIOMARKERS OF PATIENTS WITH POLYPS AND COLORECTAL CÂNCER.

BACKGROUND: Colorectal cancer (CRC) is one of the leading causes of cancer worldwide. Early diagnostic methods using serum biomarkers are required. The study of omics, most recently lipidomics, has the purpose of analyzing lipids for a better understanding of human lipidoma. The evolution of mass spectrometry methods, such as MALDI-MS technology, has enabled the detection and identification of a wide variety of lipids with great potential to open new avenues for predictive and preventive medicine. OBJECTIVE: To determine the lipid profile of patients with colorectal cancer and polyps. METHODS: Patients with stage I-III CRC, adenomatous polyps and individuals with normal colonoscopy were selected. All patients underwent peripheral blood collection for lipid extraction. The samples were analyzed by MALDI-MS technique for lipid identification. STATISTICAL ANALYSIS: Univariate and multivariate (principal component analysis [PCA] and discriminant analysis by partial least squares [PLS-DA]) analyses workflows were applied to the dataset, using MetaboAnalyst 3.0 software. The ions were identified according to the class of lipids using the online database Lipid Maps (http://www.lipidmaps.org). RESULTS: We included 88 individuals, 40 with CRC, 12 with polyps and 32 controls. Boxplot analysis showed eight VIP ions in the three groups. Differences were observed between the cancer and control groups, as well as between cancer and polyp, but not between polyps and control. The polyketide (810.1) was the lipid represented in cancer and overrepresented in polyp and control. Among the patients with CRC we observed differences between lipids with lymph node invasion (N1-2) compared to those without lymph node invasion (N). CONCLUSION: Possible lipid biomarkers were identified among cancer patients compared to control and polyp groups. The polyketide lipid (810.1) was the best biomarker to differentiate the cancer group from control and polyp. We found no difference between the biomarkers in the polyp group in relation to the control.

Use of Triggers on in vitro Fertilization and Evaluation of Risk Factors for Sub-Optimal Maturation Rate / Uso de gatilhos na fertilização in vitro e avaliação dos fatores de risco para taxa de maturação subótima

Abstract Objective To compare the oocyte maturation rate in the treatment of in vitro fertilization (IVF) in terms of the use of human chorionic gonadotropin (hCG), agonist gonadotropin-releasing hormone (GnRH) and dual trigger and to evaluate the associated risk factors for sub-optimal maturation rates. Methods A retrospective cohort study with 856 women who underwent IVF. They performed oocyte retrieval and were classified into 3 groups (1 - hCG, 2 - GnRHagonist, 3 - dual trigger). The primary outcome was maturation rate per trigger, and the secondary outcomes were the pregnancy rate per oocyte retrieval and the correlations between low maturation rate as well as the clinical and treatment characteristics of women. Results The maturation rate was 77% in group 1; 76% in group 2, and 83% in group 3 (p=0.003). Group 2 showed women with better ovarian reserve, greater number of oocytes collected, and more mature oocytes and embryos compared with the other groups (p<0.001). The cumulative clinical pregnancy rate was no different between the groups (p=0.755). Low ovarian reserve and low doses of follicle-stimulating hormone (FSH) administered during the stimulus were associated with a higher chance of null maturation rate. Conclusion The oocyte maturation rates and IVF results were similar in all groups. Low ovarian reserve is associated with the worst treatment results.

Resumo Objetivo Comparar a taxa de maturação oocitária no tratamento de fertilização in vitro (FIV) emrelação so o uso de gonadotrofina coriônica humana (hCG), agonista de hormônio liberador de gonadotrofina (GnRH), e gatilho duplo e avaliar os fatores de risco associados a taxas de maturação subótimas. Métodos Estudo de coorte retrospectivo com 856 mulheres submetidas à FIV. Elas foram classificadas em 3 grupos (1 - hCG, 2 - GnRH agonista, 3 - gatilho duplo). O desfecho primário foi a taxa de maturação por gatilho, e os desfechos secundários foram a taxa de gravidez por recuperação de oócitos e as correlações entre a baixa taxa de maturação bem como as características clínicas e do tratamento das mulheres. Resultados A taxa de maturação foi de 77% no grupo 1; 76% no grupo 2, e 83% no grupo 3 (p=0,003). O grupo 2 apresentou mulheres com melhor reserva ovariana, maior número de oócitos coletados, oócitosmaduros, e embriões, emcomparação aos demais grupos (p<0,001). A taxa cumulativa de gravidez clínica não foi diferente entre os grupos (p=0,755). Baixa reserva ovariana e baixas doses de hormônio folículoestimulante (FSH) administradas durante o estímulo foram associadas a uma maior chance de taxa de maturação nula. Conclusão As taxas de maturação oocitárias e os resultados de FIV foram semelhantes em todos os grupos. A baixa reserva ovariana está associada aos piores resultados do tratamento.

Estudo de biomarcadores lipídicos em pacientes portadores com pólipos e câncer colorretal / Study of lipid biomarkers of patients with polyps and colorectal câncer

ABSTRACT BACKGROUND: Colorectal cancer (CRC) is one of the leading causes of cancer worldwide. Early diagnostic methods using serum biomarkers are required. The study of omics, most recently lipidomics, has the purpose of analyzing lipids for a better understanding of human lipidoma. The evolution of mass spectrometry methods, such as MALDI-MS technology, has enabled the detection and identification of a wide variety of lipids with great potential to open new avenues for predictive and preventive medicine. OBJECTIVE: To determine the lipid profile of patients with colorectal cancer and polyps. METHODS: Patients with stage I-III CRC, adenomatous polyps and individuals with normal colonoscopy were selected. All patients underwent peripheral blood collection for lipid extraction. The samples were analyzed by MALDI-MS technique for lipid identification. STATISTICAL ANALYSIS: Univariate and multivariate (principal component analysis [PCA] and discriminant analysis by partial least squares [PLS-DA]) analyses workflows were applied to the dataset, using MetaboAnalyst 3.0 software. The ions were identified according to the class of lipids using the online database Lipid Maps (http://www.lipidmaps.org). RESULTS: We included 88 individuals, 40 with CRC, 12 with polyps and 32 controls. Boxplot analysis showed eight VIP ions in the three groups. Differences were observed between the cancer and control groups, as well as between cancer and polyp, but not between polyps and control. The polyketide (810.1) was the lipid represented in cancer and overrepresented in polyp and control. Among the patients with CRC we observed differences between lipids with lymph node invasion (N1-2) compared to those without lymph node invasion (N). CONCLUSION: Possible lipid biomarkers were identified among cancer patients compared to control and polyp groups. The polyketide lipid (810.1) was the best biomarker to differentiate the cancer group from control and polyp. We found no difference between the biomarkers in the polyp group in relation to the control.

RESUMO CONTEXTO: O câncer colorretal (CCR) é, mundialmente, uma das principais causas de câncer. Métodos de diagnóstico precoce através de biomarcadores séricos são necessários. O estudo das ômicas, mais recentemente a lipidômica, tem a finalidade de analisar os lipídeos para melhor compreensão do lipidoma humano. A evolução dos métodos de espectrometria de massa, como a tecnologia por MALDI-MS, possibilitou a detecção e a identificação de uma ampla variedade de lipídeos com grande potencial para abrir novos caminhos para a medicina preditiva e preventiva. OBJETIVO: Determinar o perfil lipidômico de pacientes com câncer colorretal e pólipos. MÉTODOS: Foram selecionados pacientes com CCR estádio I-III, com pólipos adenomatosos e indivíduos com colonoscopia normal. Todos os pacientes foram submetidos a coleta do sangue periférico para extração do lipídeo. As amostras foram analisadas por técnica de MALDI-MS para a identificação dos lipídeos. ANÁLISE ESTATÍSTICA: Para análise univariada e multivariada foram utilizados a análise de componentes principais (PCA) e a análise discriminante pelos quadrados mínimos (PLS-DA). Os íons foram identificados de acordo com a classe de lipídeos usando-se o Lipid Maps (http://www.lipidmaps.org). RESULTADOS: Foram incluídos 88 indivíduos, 40 com CCR, 12 com pólipos e 32 controles. A análise de boxbolt evidenciou oito íons VIP nos três grupos. Observou-se diferenças entre os grupos câncer e controle, assim como entre câncer e pólipo, mas não entre pólipos e controle. O policetídeo (810,1) foi o lipídeo hipo-representado no câncer e hiperrepresentado no pólipo e controle. Entre os pacientes com CCR observamos diferenças entre os lipídeos com invasão linfonodal (N1-2) comparados aos sem invasão linfonodal (N0). CONCLUSÃO: Foram identificados possíveis biomarcadores lipídicos entre os pacientes com câncer comparados aos grupos controle e pólipo. O lipídeo policetídeo (810,1) foi o melhor biomarcador para diferenciar o grupo câncer do controle e pólipo. Não encontramos diferença entre os biomarcadores no grupo pólipo em relação ao controle.

Lipid profiling of follicular fluid from women undergoing IVF: young poor ovarian responders versus normal responders.

This study identified possible lipid biomarkers in follicular fluid from women with poor ovarian response. These biomarkers indicate pathophysiological pathways and have potential diagnostic applications. An observational case-control study of young women undergoing ovarian stimulation for in-vitro fertilization was conducted. The participants were categorized into a poor ovarian response group and a normal ovarian response to stimulation group. All of the women underwent the same ovarian stimulation protocol, and follicular fluid was collected after ovarian aspiration. Analyses were performed using matrix-assisted laser desorption/ionization mass spectrometry. Principal component analysis and Volcano plots were used to describe follicular fluid classification models based on the lipid profiles. A total of 10 lipids were differentially expressed between the study and control groups. Of these lipid ions, three belonged to the phosphatidylcholine subclass and were present in higher concentrations in the control group. The other seven differential lipids were present in the study group and classified into four lipid subclasses: phosphatidylethanolamines, phosphatidylglycerols, phosphatidylinositols, and diacylglycerols. These distinctive lipids may be involved in hormonal responses and oocyte development processes and may be useful as biomarkers for therapeutic intervention in women with poor ovarian response.