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Uterine metabolism

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https://www.readbyqxmd.com/read/28631256/vulnerability-to-a-metabolic-challenge-following-perinatal-asphyxia-evaluated-by-organotypic-cultures-neonatal-nicotinamide-treatment
#1
R Perez-Lobos, C Lespay-Rebolledo, A Tapia-Bustos, E Palacios, V Vío, D Bustamante, P Morales, M Herrera-Marschitz
The hypothesis of enhanced vulnerability following perinatal asphyxia was investigated with a protocol combining in vivo and in vitro experiments. Asphyxia-exposed (AS) (by 21 min water immersion of foetuses containing uterine horns) and caesarean-delivered control (CS) rat neonates were used at P2-3 for preparing triple organotypic cultures (substantia nigra, neostriatum and neocortex). At DIV 18, cultures were exposed to different concentrations of H2O2 (0.25-45 mM), added to the culture medium for 18 h...
June 19, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28630707/evidence-of-endometrial-amino-acid-metabolism-and-transport-modulation-by-peri-ovulatory-endocrine-profiles-driving-uterine-receptivity
#2
Moana Rodrigues França, Maressa Izabel Santos da Silva, Guilherme Pugliesi, Veerle Van Hoeck, Mario Binelli
BACKGROUND: In beef cattle, changes in the periovulatory endocrine milieu are associated with fertility and conceptus growth. A large preovulatory follicle (POF) and the resulting elevated concentrations of progesterone (P4) during diestrus positively affect pregnancy rates. Amino acids (AA) are important components of maternally derived secretions that are crucial for embryonic survival before implantation. The hypothesis is that the size of the POF and the concentration of P4 in early diestrus modulate the endometrial abundance of SLC transcripts related to AA transport and metabolism and subsequently impact luminal concentrations of AA...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28625536/reconstructing-lineage-hierarchies-of-mouse-uterus-epithelial-development-using-single-cell-analysis
#3
Bingbing Wu, Chengrui An, Yu Li, Zi Yin, Lin Gong, Zhenli Li, Yixiao Liu, Boon Chin Heng, Dandan Zhang, Hongwei Ouyang, Xiaohui Zou
The endometrial layer comprises luminal and glandular epithelia that both develop from the same simple layer of fetal uterine epithelium. Mechanisms of uterine epithelial progenitor self-renewal and differentiation are unclear. This study aims to systematically analyze the molecular and cellular mechanisms of uterine epithelial development by single-cell analysis. An integrated set of single-cell transcriptomic data of uterine epithelial progenitors and their differentiated progenies is provided. Additionally the unique molecular signatures of these cells, characterized by sequential upregulation of specific epigenetic and metabolic activities, and activation of unique signaling pathways and transcription factors, were also investigated...
June 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28623968/oxygen-and-tissue-culture-affect-placental-gene-expression
#4
O Brew, M H F Sullivan
INTRODUCTION: Placental explant culture is an important model for studying placental development and functions. We investigated the differences in placental gene expression in response to tissue culture, atmospheric and physiologic oxygen concentrations. METHODS: Placental explants were collected from normal term (38-39 weeks of gestation) placentae with no previous uterine contractile activity. Placental transcriptomic expressions were evaluated with GeneChip(®) Human Genome U133 Plus 2...
July 2017: Placenta
https://www.readbyqxmd.com/read/28587493/a-randomized-controlled-trail-of-a-new-treatment-for-labor-dystocia
#5
Eva Wiberg-Itzel, Susan Wray, Helena Åkerud
OBJECTIVE: Labor dystocia is an intransigent, high-profile issue in obstetric care. Amniotic fluid lactate (AFL) reflects the uterine metabolic status. High levels associate with subsequent need for operative intervention due to dystocia. In sports medicine it is known that lactic acid can affect muscular performance and can be decreased by bicarbonate given orally before physical activity. MATERIAL AND METHODS: Two hundred dystocic deliveries were included. At the confirmation of dystocia, the AFL- level was analyzed...
June 7, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28553146/recurrent-pregnancy-loss-current-perspectives
#6
REVIEW
Hady El Hachem, Vincent Crepaux, Pascale May-Panloup, Philippe Descamps, Guillaume Legendre, Pierre-Emmanuel Bouet
Recurrent pregnancy loss is an important reproductive health issue, affecting 2%-5% of couples. Common established causes include uterine anomalies, antiphospholipid syndrome, hormonal and metabolic disorders, and cytogenetic abnormalities. Other etiologies have been proposed but are still considered controversial, such as chronic endometritis, inherited thrombophilias, luteal phase deficiency, and high sperm DNA fragmentation levels. Over the years, evidence-based treatments such as surgical correction of uterine anomalies or aspirin and heparin for antiphospholipid syndrome have improved the outcomes for couples with recurrent pregnancy loss...
2017: International Journal of Women's Health
https://www.readbyqxmd.com/read/28541634/prognostic-value-of-metabolic-parameters-determined-by-preoperative-%C3%A2-%C3%A2-f-fdg-pet-ct-in-patients-with-uterine-carcinosarcoma
#7
Hyun Ju Lee, Jong Jin Lee, Jeong Yeol Park, Jong Hyeok Kim, Yong Man Kim, Young Tak Kim, Joo Hyun Nam
OBJECTIVE: To evaluate the prognostic value of metabolic parameters measured by preoperative ¹⁸F-fluorodeoxyglucose (¹⁸F-FDG) positron emission tomography (PET)/computed tomography (CT) in patients with uterine carcinosarcoma (UCS). METHODS: Data of 55 eligible patients with UCS who underwent preoperative ¹⁸F-FDG PET/CT and surgical staging were analyzed retrospectively. Maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV₂.₅), and total lesion glycolysis (TLG₂...
July 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28534183/prognostic-importance-of-lymph-node-to-primary-tumor-standardized-uptake-value-ratio-in-invasive-squamous-cell-carcinoma-of-uterine-cervix
#8
Hyun Hoon Chung, Gi Jeong Cheon, Jae-Weon Kim, Noh-Hyun Park, Yong Sang Song
PURPOSE: Using integrated PET/CT, we evaluated the prognostic value of [(18)F]FDG uptake ratio between pelvic lymph node (LN) and primary tumor in invasive squamous cell carcinoma (SCCA) of the uterine cervix. METHODS: We retrospectively reviewed patients with International Federation of Gynecology and Obstetrics (FIGO) stages IB to IIA cervical SCCA who underwent preoperative [(18)F]FDG PET/CT scans. PET/CT parameters such as maximum standardized uptake value (SUV) of the primary cervical cancer (SUVcervix) and LN (SUVLN), and the LN-to-cervical cancer SUV ratio (SUVLN/SUVcervix) were assessed...
May 23, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28531286/is-foetal-hyperexposure-to-androgens-a-cause-of-pcos
#9
Panagiota Filippou, Roy Homburg
BACKGROUND: Polycystic ovary syndrome (PCOS) is the most common endocrinopathy affecting reproductive-aged women. The pathophysiology of this syndrome is still not completely understood but recent evidence suggests that the intra-uterine environment may be a key factor in the pathogenesis of PCOS, in particular, hyperexposure of the foetus to androgens. High concentrations of maternal serum testosterone during pregnancy have been shown to influence behaviour during childhood, the prevalence of autism disorders and anti-Mullerian hormone (AMH) concentrations in adolescence...
May 20, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28523429/kir-lilrb-and-their-ligands-genes-as-potential-biomarkers-in-recurrent-implantation-failure
#10
REVIEW
Izabela Nowak, Karolina Wilczyńska, Jacek R Wilczyński, Andrzej Malinowski, Paweł Radwan, Michał Radwan, Piotr Kuśnierczyk
Reproductive failure in humans is a very important social and economic problem, because nowadays women decide to conceive later in life and delay motherhood. Unfortunately, with increasing age they have less chance for natural fertilization and maintenance of pregnancy. Many of them need assisted reproductive technology. Approximately 10% of women after in vitro fertilization-embryo transfers experience recurrent implantation failure (RIF). Multiple factors may contribute to RIF, including oocyte and sperm quality, parental chromosomal anomalies, genetic or metabolic abnormalities of the embryo, poor uterine receptivity, immunological disturbances in the implantation site, and some gynecologic pathologies such as endometriosis, uterine fibroids, hydrosalpinx and endometrial polyps...
May 18, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28523389/effects-of-calving-season-on-the-voluntary-waiting-period-and-reproductive-performance-of-holstein-cows-in-the-tropical-savannah
#11
Thiago Vilar Silva, Benner Geraldo Alves, Kele Amaral Alves, Regiani Nascimento Gagno Porto, Maria Lucia Gambarini
The effects of calving season [rainy (RS) and dry (DS)] on the voluntary waiting period (VWP) of 58 Holstein cows raised in the tropical savannah were investigated using data of temperature humidity index (THI), total antioxidant status (TAS), respiratory rate (RR), rectal temperature (RT), glucose, total cholesterol (TC), triglycerides (TG), velocity of uterine regression, and subsequent reproductive performance. Blood samples and clinical data were taken once every week, from calving until the sixth postpartum week...
May 18, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28508679/comparison-of-fdg-pet-metabolic-tumour-volume-versus-adc-histogram-prognostic-value-of-tumour-treatment-response-and-survival-in-patients-with-locally-advanced-uterine-cervical-cancer
#12
Yoshiko Ueno, Robert Lisbona, Tsutomu Tamada, Amer Alaref, Kazuro Sugimura, Caroline Reinhold
OBJECTIVE: To evaluate the prognostic utility of volume-based parameters of fluorine 18 fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) and apparent diffusion coefficient (ADC) histogram analysis for tumour response to therapy and event-free survival (EFS) in patients with uterine cervical cancer receiving chemoradiotherapy (CRT). METHODS: The study included 21 patients diagnosed as locally advanced uterine cervical cancer who underwent pre-treatment MRI and (18)F-FDG PET and were treated with concurrent CRT...
May 16, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28483502/oxidative-stress-a-key-regulator-of-leiomyoma-cell-survival
#13
Nicole M Fletcher, Mohammed S Abusamaan, Ira Memaj, Mohammed G Saed, Ayman Al-Hendy, Michael P Diamond, Ghassan M Saed
OBJECTIVE: To determine the effects of attenuating oxidative stress with the use of dichloroacetate (DCA) on the expression of key redox enzymes myeloperoxidase (MPO) and inducible nitric oxide synthase (iNOS) as well as on apoptosis. DESIGN: Prospective experimental study. SETTING: University medical center. PATIENT(S): Cells established from myometrium and uterine fibroid from the same patients. INTERVENTION(S): Cells were exposed to normal (20% O2) or hypoxic (2% O2) conditions for 24 hours with or without DCA (20 μg/mL), a metabolic modulator that shifts anaerobic to aerobic metabolism...
June 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28472298/adiponectin-stimulates-lipid-metabolism-via-ampk-in-rabbit-blastocysts
#14
Maria Schindler, Mareike Pendzialek, Katarzyna Joanna Grybel, Tom Seeling, Jacqueline Gürke, Bernd Fischer, Anne Navarrete Santos
STUDY QUESTION: How does a maternal diabetic hyperadiponectineamia affect signal transduction and lipid metabolism in rabbit preimplantation blastocysts? SUMMARY ANSWER: In a diabetic pregnancy increased levels of adiponectin led to a switch in embryonic metabolism towards a fatty acid-dependent energy metabolism, mainly affecting genes that are responsible for fatty acid uptake and turnover. WHAT IS KNOWN ALREADY: Although studies in cell culture experiments have shown that adiponectin is able to regulate lipid metabolism via 5'-AMP-activated protein kinase (AMPK) and peroxisome proliferator-activated receptor α (PPARα), data on the effects of adiponectin on embryonic lipid metabolism are not available...
May 4, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28469842/peripheral-leukocyte-and-endometrium-molecular-biomarkers-of-inflammation-and-oxidative-stress-are-altered-in-peripartal-dairy-cows-supplemented-with-zn-mn-and-cu-from-amino-acid-complexes-and-co-from-co-glucoheptonate
#15
Fernanda Batistel, Johan S Osorio, Muhammad Rizwan Tariq, Cong Li, Jessica Caputo, Michael T Socha, Juan J Loor
BACKGROUND: Immune dysfunction and a higher risk of uterine infections are characteristics of the transition into lactation in dairy cows. The supply of complexed trace minerals, which are more bioavailable, could help overcome the greater needs of these nutrients in tissues around parturition and early lactation. RESULTS: Twenty Holstein cows received an oral bolus with a mix of inorganic trace minerals (INO) or complexed trace minerals (AAC) to achieve 75, 65, 11, and 1 ppm supplemental Zn, Mn, Cu, and Co, respectively, in the total diet dry matter from -30 d through +30 d relative to parturition...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28439056/-calcium-and-bone-metabolism-across-women-s-life-stages-treatment-for-the-malignant-tumors-in-women-and-bone-calcium-metabolism
#16
Noriko Kobayashi
In the malignant tumors in women, uterine cervical cancer, endometrial cancer, ovarian cancer, and breast cancer are representative diseases. The cancer treatment is classified roughly into an operation, medical treatment, and radiation therapy and has an extremely big influence on ovarian function. With the improvement in survival of cancer patients, the importance of the health care for the cancer survivors increases. It is necessary to prevent the onset of the osteoporotic fractures to maintain QOL. This paper describes the action that the malignant tumors of the women affect bone metabolism mainly from the viewpoint of ovarian function...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28428364/role-of-oestrogen-receptor-signaling-in-skeletal-response-to-leptin-in-female-ob-ob-mice
#17
Russell T Turner, Kenneth A Philbrick, Amida Kuah, Adam J Branscum, Urszula T Iwaniec
Leptin, critical in regulation of energy metabolism, is also important for normal bone growth, maturation and turnover. Compared to wild type (WT) mice, bone mass is lower in leptin-deficient ob/ob mice; osteopenia in growing ob/ob mice is due to decreased bone accrual, and is associated with reduced longitudinal bone growth, impaired cancellous bone maturation and increased marrow adipose tissue (MAT). However, leptin deficiency also results in gonadal dysfunction, disrupting production of gonadal hormones which regulate bone growth and turnover...
April 20, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28423698/parameters-of-simultaneous-18f-fdg-pet-mri-predict-tumor-stage-and-several-histopathological-features-in-uterine-cervical-cancer
#18
Alexey Surov, Hans Jonas Meyer, Stefan Schob, Anne-Kathrin Höhn, Kristina Bremicker, Marc Exner, Patrick Stumpp, Sandra Purz
The purpose of this study was to analyze associations between apparent diffusion coefficient (ADC) and standardized uptake values (SUV) values and different histopathological parameters in uterine cervical cancer. 21 patients with primary uterine cervical cancer were involved into the study. All patients underwent a whole body simultaneous18F-FDG PET/MRI. Mean and maximum SUV were noted (SUVmean and SUVmax). In all tumors minimal, mean, and maximal ADC values (ADCmin, ADCmean, and ADCmax) were estimated. Combined parameters were calculated: SUVmax/SUVmean, ADCmin/ ADCmean, SUVmax/ADCmin and SUVmax/ADCmean...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28395335/role-of-stro1-cd44-stem-cells-in-myometrial-physiology-and-uterine-remodeling-during-pregnancy%C3%A2
#19
Aymara Mas, Lauren Prusinski, Qiwei Yang, Patricia Diaz-Gimeno, Lelyand Stone, Michael P Diamond, Carlos Simón, Ayman Al-Hendy
Regulation of myometrial functions during pregnancy has been considered the result of the integration of endocrine and mechanical signals. Nevertheless, uterine regeneration is poorly understood, and the cellular source within the gravid uterus is largely unexplored.In this study, we isolated and quantified the myometrial stem cells (MSC) population from pregnant female Eker rat uteri, by using Stro1/CD44 surface markers. We demonstrated that prior parity significantly increased the percentage of Stro1+/CD44+ MSC because of injured tissue response...
January 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28389056/effects-of-adipokines-and-obesity-on-uterine-contractility
#20
REVIEW
Henri Azaïs, Audrey Leroy, Louise Ghesquiere, Philippe Deruelle, Sandy Hanssens
Obesity is a major public health problem. The prevalence of obesity has significantly increased in developed countries, particularly in France with an overall increase of 76% over the last 15 years. In pregnant women, obesity is associated with alterations in the quality of labor, such as delayed onset of labor, a higher rate of prolonged pregnancies, prolonged labor, and higher oxytocin requirements. There is also an increased prevalence of Cesarean sections, particularly during the active phase of labor, and perinatal complications (postpartum hemorrhage)...
January 13, 2017: Cytokine & Growth Factor Reviews
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