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glucose metabolism and fertility

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https://www.readbyqxmd.com/read/27891185/spermatozoal-cell-death-inducing-dna-fragmentation-factor-%C3%AE-like-effector-a-cidea-gene-expression-and-dna-fragmentation-in-infertile-men-with-metabolic-syndrome-and-normal-seminogram
#1
Ayman Z Elsamanoudy, Hussein Abdelaziz Abdalla, Mohammed Hassanien, Mohammad A Gaballah
BACKGROUND: This is the first study to investigate spermatozoal cell death-inducing DNA fragmentation factor-α-like effector A (CIDEA) gene expression and DNA fragmentations in the spermatozoa of men diagnosed with metabolic syndrome (MS) who have normal seminograms with unexplained infertility, and to correlate these parameters with seminal glucose concentration. METHODS: This study included 120 participants: 75 male subjects with MS (38 fertile and 37 infertile), and a control group of 45 fertile males without MS...
2016: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/27835892/establishment-of-mitochondrial-pyruvate-carrier-1-mpc1-gene-knockout-mice-with-preliminary-gene-function-analyses
#2
Xiaoli Li, Yaqing Li, Gaoyang Han, Xiaoran Li, Yasai Ji, Zhirui Fan, Yali Zhong, Jing Cao, Jing Zhao, Goscinski Mariusz, Mingzhi Zhang, Jianguo Wen, Jahn M Nesland, Zhenhe Suo
Pyruvate plays a critical role in the mitochondrial tricarboxylic acid (TCA) cycle, and it is the center product for the synthesis of amino acids, carbohydrates and fatty acids. Pyruvate transported across the inner mitochondrial membrane appears to be essential in anabolic and catabolic intermediary metabolism. The mitochondrial pyruvate carrier (MPC) mounted in the inner membrane of mitochondria serves as the channel to facilitate pyruvate permeating. In mammals, the MPC is formed by two paralogous subunits, MPC1 and MPC2...
November 8, 2016: Oncotarget
https://www.readbyqxmd.com/read/27793454/the-association-of-plasma-glucose-bhba-and-nefa-with-postpartum-uterine-diseases-fertility-and-milk-production-of-holstein-dairy-cows
#3
M L S Bicalho, E C Marques, R O Gilbert, R C Bicalho
The objective of this study was to investigate the association between the metabolic indicators such as nonesterified fatty acids (NEFA), β-hydroxybutyrate (BHBA), and glucose during the transition period and the development of uterine diseases. In total, 181 Holstein dairy cows were enrolled in the study. Plasma glucose, NEFA, and BHBA concentrations were measured at -50, -6, 3, 7, and 14 days relative to parturition. All cows enrolled in the study were evaluated for retained placenta (RP), metritis, and endometritis...
January 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/27747966/short-term-methionine-supplementation-during-the-early-post-partum-period-in-primiparous-rabbits-improves-prolificacy-associated-with-an-increase-in-serum-concentrations-of-igf-i
#4
Z B Lopéz-Cedillo, A M Rosales-Torres, G D Mendoza, Y Heuze, A E Ávila-Espítia, A Guzmán
The aim of this study was to evaluate the effects of methionine supplementation on energy metabolism and reproductive performance during the early post-partum period in primiparous does. Forty nulliparous New Zealand White does were used. Females were randomized in two groups at calving: the control group (n = 20) was fed with the basal diet, and the methionine group (n = 20) was fed the basal diet plus 1 g/animal/day of methionine from the day of calving to 4 days post-partum. Results showed that methionine supplementation increased (p = 0...
October 16, 2016: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/27704369/development-of-metabolic-syndrome-associated-to-cancer-therapy-review
#5
REVIEW
Stephania Casco, Elena Soto-Vega
Long-term childhood cancer survivors are at great risk of developing late adverse effects after treatment, such as, reduced growth, obesity, decreased fertility, high blood pressure, cardiovascular diseases, impaired glucose, another form of cancer, among others organ dysfunctions, some of them are part of the metabolic syndrome. Metabolic syndrome and cancer connection is still not entirely understood, but there are some notions about it. Metabolic alterations produced during childhood cancer are more likely determined by treatments like radiotherapy, chemotherapy, glucocorticoids therapy, and surgery...
December 2016: Hormones & Cancer
https://www.readbyqxmd.com/read/27634396/prepubertal-heifers-versus-cows-the-differences-in-the-follicular-environment
#6
E Warzych, P Pawlak, M Pszczola, A Cieslak, D Lechniak
The oocyte quality is to a large extent influenced by the sexual maturity of the donor female. Although this phenomenon has already been broadly described in domestic animals, the underlying mechanisms are poorly understood. Published data focus on oocyte ultrastructure, fertilization abnormalities, and blastocyst developmental rate. The goal of the present experiment was to characterize the follicular environment (oocyte, cumulus [CC] and granulosa (GC) cells as well as follicular fluid [FF]) in ovarian follicles of prepubertal heifers and cows...
August 12, 2016: Theriogenology
https://www.readbyqxmd.com/read/27579037/metabolism-and-ovarian-function-in-pcos-women-a-therapeutic-approach-with-inositols
#7
REVIEW
Antonio Simone Laganà, Paola Rossetti, Massimo Buscema, Sandro La Vignera, Rosita Angela Condorelli, Giuseppe Gullo, Roberta Granese, Onofrio Triolo
Polycystic ovary syndrome (PCOS) is characterized by chronical anovulation and hyperandrogenism which may be present in a different degree of severity. Insulin-resistance and hyperinsulinemia are the main physiopathological basis of this syndrome and the failure of inositol-mediated signaling may concur to them. Myo (MI) and D-chiro-inositol (DCI), the most studied inositol isoforms, are classified as insulin sensitizers. In form of glycans, DCI-phosphoglycan and MI-phosphoglycan control key enzymes were involved in glucose and lipid metabolism...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27568457/royal-jelly-may-improve-the-metabolism-of-glucose-and-redox-state-of-ovine-oocytes-matured-in%C3%A2-vitro-and-embryonic-development-following-in%C3%A2-vitro-fertilization
#8
Mahbobeh Eshtiyaghi, Hamid Deldar, Zarbakht Ansari Pirsaraei, Bahram Shohreh
The aim of this study was to investigate the effect of different concentrations of royal jelly (RJ) on in vitro maturation (IVM), fertilization, cleavage, blastocyst rates, glutathione (GSH) content in ovine oocyte, mRNA abundance of antioxidant enzymes in both oocyte and cumulus, and glucose metabolism-related genes in cumulus cells. In vitro maturation of oocyte was performed in the presence of control (RJ0), 2.5 (RJ2.5), 5 (RJ5), and 10 (RJ10) mg/mL of RJ. Nuclear status, intracellular GSH content in oocytes, and mRNA abundance of selected genes were evaluated following 24 hours of IVM...
July 25, 2016: Theriogenology
https://www.readbyqxmd.com/read/27559343/peroxisome-proliferator-activated-receptors-in-female-reproduction-and-fertility
#9
REVIEW
Maurizio Vitti, Giovanna Di Emidio, Michela Di Carlo, Gaspare Carta, Andrea Antonosante, Paolo Giovanni Artini, Annamaria Cimini, Carla Tatone, Elisabetta Benedetti
Reproductive functions may be altered by the exposure to a multitude of endogenous and exogenous agents, drug or environmental pollutants, which are known to affect gene transcription through the peroxisome proliferator-activated receptors (PPARs) activation. PPARs act as ligand activated transcription factors and regulate metabolic processes such as lipid and glucose metabolism, energy homeostasis, inflammation, and cell proliferation and differentiation. All PPARs isotypes are expressed along the hypothalamic-pituitary-gonadal axis and are strictly involved in reproductive functions...
2016: PPAR Research
https://www.readbyqxmd.com/read/27526775/mrna-expression-pattern-of-selected-candidate-genes-differs-in-bovine-oviductal-epithelial-cells-in-vitro-compared-with-the-in-vivo-state-and-during-cell-culture-passages
#10
Sadjad Danesh Mesgaran, Jutta Sharbati, Ralf Einspanier, Christoph Gabler
BACKGROUND: The mammalian oviduct provides the optimal environment for gamete maturation including sperm capacitation, fertilization, and development of the early embryo. Various cell culture models for primary bovine oviductal epithelial cells (BOEC) were established to reveal such physiological events. The aim of this study was to evaluate 17 candidate mRNA expression patterns in oviductal epithelial cells (1) in transition from in vivo cells to in vitro cells; (2) during three consecutive cell culture passages; (3) affected by the impact of LOW or HIGH glucose content media; and (4) influenced by different phases of the estrous cycle in vivo and in vitro...
2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27517965/from-embryos-to-adults-a-dohad-perspective-on-in-vitro-fertilization-and-other-assisted-reproductive-technologies
#11
Sky Feuer, Paolo Rinaudo
Human in vitro fertilization (IVF) as a treatment for infertility is regarded as one of the most outstanding accomplishments of the 20th century, and its use has grown dramatically since the late 1970s. Although IVF is considered safe and the majority of children appear healthy, reproductive technologies have been viewed with some skepticism since the in vitro environment deviates substantially from that in vivo. This is increasingly significant because the Developmental Origins of Health and Disease (DOHaD) hypothesis has illuminated the sensitivity of an organism to its environment at critical stages during development, including how suboptimal exposures restricted specifically to gamete maturation or the preimplantation period can affect postnatal growth, glucose metabolism, fat deposition, and vascular function...
August 9, 2016: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/27515589/pioglitazone-increases-the-glycolytic-efficiency-of-human-sertoli-cells-with-possible-implications-for-spermatogenesis
#12
M J Meneses, R L Bernardino, R Sá, J Silva, A Barros, M Sousa, B M Silva, P F Oliveira, M G Alves
Pioglitazone is a synthetic agonist for the nuclear receptor peroxisome proliferator-activated receptor γ used to treat type 2 diabetes mellitus. Recently we reported that antidiabetic drugs regulate the nutritional support of spermatogenesis by Sertoli cells. Herein, we investigate the effects of pioglitazone on human Sertoli cells metabolism. Human Sertoli cells were cultured in the presence of pioglitazone (1, 10, 100μM). Protein levels of phosphofructokinase 1, lactate dehydrogenase, hexokinase, glucose transporters (GLUT1, GLUT2, GLUT3), monocarboxylate transporter 4 and oxidative phosphorylation complexes were determined by Western blot...
October 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27514712/altered-steroid-metabolism-and-insulin-signaling-in-pcos-endometria-impact-in-tissue-function
#13
Lorena Oróstica, Carlos Rosas, Francisca Plaza-Parrochia, Isis Astorga, Fernando Gabler, Víctor García, Carmen Romero, Margarita Vega
BACKGROUND: Polycystic Ovary Syndrome (PCOS) is a prevalent endocrine/ metabolic disorder characterized by hyperandrogenemia and in most cases, by hyperinsulinemia in addition to obesity. Besides ovarian dysfunction, endometrial physiology is also disrupted since this tissue is highly dependent on the action of steroids; in case of conception cycles, high percentage of abortion is observed. Because of the endocrine/metabolic alterations, PCOS-women present high probability to develop hyperplasia and endometrial cancer, where an imbalance of cell proliferation/apoptosis processes is detected...
2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27488027/downregulation-of-mir-199a-5p-disrupts-the-developmental-potential-of-in-vitro-fertilized-mouse-blastocysts
#14
Kun Tan, Xiaodong Wang, Zhenni Zhang, Kai Miao, Yong Yu, Lei An, Jianhui Tian
Although in vitro fertilization (IVF), one of the most effective and successful assisted reproductive technologies, is widely used for treating infertility and in animal breeding, increasing evidence indicates that IVF offspring are linked to various short- or long-term consequences. Erroneous epigenetic modifications induced by IVF are suspected of contributing to these consequences. Among these epigenetic modifications, microRNAs may affect embryo implantation and early postimplantation development. Here, we performed comparative microRNA profiling between in vivo-fertilized (IVO group) and in vitro-fertilized (IVF group) mouse embryos at Embryonic Day 3...
September 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/27461498/-osteocalcin-and-osteonetwork
#15
Tatsuya Yoshizawa
Nearly nine years ago, new mechanism that bone secretes a hormone called osteocalcin and regulates glucose/energy metabolism was discovered. To date the study of osteocalcin as the bone hormone was progressed well, and the new roles in various tissues, such as glucose metabolism, male fertility, and development of the brain, are demonstrated. On the other hand, signaling pathway of osteocalcin has not yet been fully understood, though its receptor was reported. This review focuses on the diverse roles of osteocalcin and also on the future task that should be solved...
August 2016: Clinical Calcium
https://www.readbyqxmd.com/read/27424378/adverse-long-term-metabolic-and-endometrial-consequences-in-women-with-polycystic-ovarian-syndrome-a-report-of-two-cases
#16
Salma A Mahmoud, Lizhi Zhang, Chenyu Jia, Hong Zang
BACKGROUND: Little prospective data exist on associations between polycystic ovary syndrome (PCOS) and long-term metabolic disorders/endometrial malignancy in women. We report the cases of 2 obese, infertile women with PCOS who experienced long-term adverse metabolic and endometrial consequences. CASE: The first woman developed type 2 diabetes and hypertension after a 10-year history of PCOS and subsequent endometrioid carcinoma after having PCOS for 16 years. The second woman was first diagnosed with endometrial atypical hyperplasia, which failed to respond to high-dose progestin treatment, and then was diagnosed with PCOS after a 10-year history of oligomenorrhea...
May 2016: Journal of Reproductive Medicine
https://www.readbyqxmd.com/read/27399233/1hnmr-based-discriminatory-analysis-of-eurycoma-longifolia-from-different-locations-and-establishing-a-profile-for-primary-metabolites-identification-and-quassinoids-quantification
#17
Forough Ebrahimi, Baharudin Ibrahim, Chin Hoe Teh, Vikneswaran Murugaiyah, Chan Kit Lam
Quassinoids, the major secondary metabolites of Eurycoma longifolia roots, improve male fertility. Hence, it is crucial to investigate their quantitative level in E. longifolia extracts. A profile was established to identify the primary metabolites and major quassinoids, and quantify quassinoids using external calibration curves. Furthermore, the metabolic discrimination of E. longifolia roots from different regions was investigated. The (1)H-NMR spectra of the quassinoids, eurycomanone, eurycomanol, 13,21-dihydroeurycomanone, and eurycomanol-2-O-β-D-glycopyranoside were obtained...
July 11, 2016: Planta Medica
https://www.readbyqxmd.com/read/27385589/sneaker-male-squid-produce-long-lived-spermatozoa-by-modulating-their-energy-metabolism
#18
Noritaka Hirohashi, Miwa Tamura-Nakano, Fumio Nakaya, Tomohiro Iida, Yoko Iwata
Spermatozoa released by males should remain viable until fertilization. Hence, sperm longevity is governed by intrinsic and environmental factors in accordance with the male mating strategy. However, whether intraspecific variation of insemination modes can impact sperm longevity remains to be elucidated. In the squid Heterololigo bleekeri, male dimorphism (consort and sneaker) is linked to two discontinuous insemination modes that differ in place and time. Notably, only sneaker male spermatozoa inseminated long before egg spawning can be stored in the seminal receptacle...
September 9, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27304070/the-possible-impact-of-advanced-glycation-end-products-on-pregnancy-outcome-in-women-with-diabetes-mellitus-type-1
#19
Magdalena Pertynska-Marczewska, Katarzyna Cypryk
Diabetes mellitus (DM) is a group of metabolic disorders of carbohydrate metabolism in which glucose is underutilized, resulting in hyperglycemia. Reproductive impairment in poorly controlled T1DM results from a combined effect of insulin deficiency and hyperglycemia that disrupt the functioning of metabolic signals participating in the regulation of the reproductive system. Good metabolic control as a result of intensive insulin therapy has a great impact on the fertility and childbearing possibilities in the T1DM females...
June 15, 2016: Minerva Endocrinologica
https://www.readbyqxmd.com/read/27264729/high-glucose-levels-affect-spermatogenesis-an-in-vitro-approach
#20
Renata S Tavares, Joana M D Portela, Maria I Sousa, Paula C Mota, João Ramalho-Santos, Sandra Amaral
Besides known factors that may cause male infertility, systemic diseases such as diabetes mellitus may further exacerbate a decline in male fertility. This metabolic disease, clinically characterised by a hyperglycaemic phenotype, has devastating consequences in terms of human health, with reproductive dysfunction being one of the associated clinical complications. Nonetheless, the mechanisms responsible for such alterations are still poorly understood due to the multiplicity of factors involved in the induced pathophysiological changes...
June 6, 2016: Reproduction, Fertility, and Development
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