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glucose metabolism and fertility

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https://www.readbyqxmd.com/read/28804986/effects-of-hydroxycitric-acid-on-lipid-droplet-accumulation-in-chicken-embryos
#1
Mengling Peng, Longlong Li, Lei Yu, Chongyang Ge, Haitian Ma
This study was conducted to determine the impact of (-)-hydroxycitric acid ((-)-HCA) on biochemical indices and lipid metabolism parameters in chicken embryos. Two hundred and forty fertilized eggs were divided into six groups and injected with (-)-HCA at concentrations of 0, 0.1, 0.5, 1.0, 10.0 and 50 mg/kg (n = 40). After 19 days of incubation, serum and liver were collected for analysis of biochemical indices and lipid metabolism parameters. Results showed no significant differences on serum biochemical indices: 1-50 mg/kg (-)-HCA significantly increased serum glucose and hepatic glycogen contents (P < 0...
August 14, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28777818/gluc-het-a-complementary-chick-embryo-model-for-the-characterization-of-antidiabetic-compounds
#2
Renate Haselgrübler, Flora Stübl, Katja Essl, Marcus Iken, Klaus Schröder, Julian Weghuber
Insulin resistance and β cell failure are the main causes of elevated blood glucose levels in Type 2 diabetes mellitus (T2DM), a complex and multifactorial metabolic disease. Several medications to treat or reduce the symptoms of T2DM are used, including the injection of insulin and the application of insulin sensitizing or glucose production reducing drugs. Furthermore, the use of phytochemicals has attracted increasing attention for the therapy and prevention of T2DM. In order to identify and characterize antidiabetic compounds, efficient test systems are required...
2017: PloS One
https://www.readbyqxmd.com/read/28755931/blood-plasma-traits-associated-with-genetic-merit-for-feed-utilization-in-holstein-cows
#3
C D Dechow, C R Baumrucker, R M Bruckmaier, J W Blum
The objective of this study was to evaluate the potential of selection for feed utilization on associated blood plasma metabolite and hormone traits. Dry matter intake (DMI) was recorded in 970 Holsteins from 11 commercial farms in Pennsylvania and used to derive dry matter efficiency (DME; fat-corrected milk yield/DMI), crude protein efficiency (CPE; protein yield/crude protein intake), and residual feed intake (RFI, defined as actual feed intake minus expected feed intake for maintenance and milk production, based on calculation of DMI adjusted for yield, body weight, and body condition score)...
July 26, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28724173/a-comparative-study-between-myo-inositol-and-metformin-in-the-treatment-of-insulin-resistant-women
#4
K Nas, L Tűű
OBJECTIVE: Insulin resistance (IR) is a common disorder, which can impair female fertility and is characterized by phenotypic heterogeneity. Life-style treatment and insulin sensitizers are commonly used in the management of women with IR and consequent hyperinsulinemia, in order to restore the normal endocrinological and clinical parameters. Metformin (MET) is considered one of the first approaches to this pathology but new evidences are showing promising results using myo-inositol (MYO) in the management of this pathology...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28708519/relationships-between-uterine-health-and-metabolism-in-dairy-cows-with-different-dry-period-lengths
#5
J Chen, N M Soede, G J Remmelink, R M Bruckmaier, B Kemp, A T M van Knegsel
The first objective of this study was to evaluate effects of dry period (DP) length and dietary energy source on ovarian activity, uterine health status, pregnancy rate, and days open in dairy cows in the second subsequent lactation after implementation of DP length and dietary treatments. The second objective was to determine relationships of uterine health status with ovarian activity, milk yield, energy balance (EB), and metabolic status in dairy cows. Holstein-Friesian dairy cows (n = 167) were assigned randomly to 1 of 3 DP lengths (0-, 30-, or 60-d) and 1 of 2 early lactation diets (glucogenic or lipogenic diet) for 2 subsequent lactations...
June 13, 2017: Theriogenology
https://www.readbyqxmd.com/read/28645790/vitamin-e-deficiency-during-embryogenesis-in-zebrafish-causes-lasting-metabolic-and-cognitive-impairments-despite-refeeding-adequate-diets
#6
Melissa McDougall, Jaewoo Choi, Lisa Truong, Robert Tanguay, Maret G Traber
Vitamin E (α-tocopherol; VitE) is a lipophilic antioxidant required for normal embryonic development in vertebrates, but the long-term effects of embryonic VitE deficiency, and whether they are ameliorated by feeding VitE-adequate diets, remain unknown. We addressed these questions using a zebrafish (Danio rerio) model of developmental VitE deficiency followed by dietary remediation. Adult zebrafish maintained on VitE-deficient (E-) or sufficient (E+) diets were spawned to obtained E- and E+ embryos, respectively, which we evaluated up to 12 days post-fertilization (dpf)...
September 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28644873/circular-rna-expression-profiling-of-human-granulosa-cells-during-maternal-aging-reveals-novel-transcripts-associated-with-assisted-reproductive-technology-outcomes
#7
Jing Cheng, Jia Huang, Suzhen Yuan, Su Zhou, Wei Yan, Wei Shen, Yun Chen, Xi Xia, Aiyue Luo, Da Zhu, Shixuan Wang
Circular RNAs (circRNAs) are a unique class of endogenous RNAs which could be used as potential diagnostic and prognostic biomarkers of many diseases. Our study aimed to investigate circRNA profiles in human granulosa cells (GCs) during maternal aging and to uncover age-related circRNA variations that potentially reflect decreased oocyte competence. CircRNAs in GCs from in vitro fertilization (IVF) patients with young age (YA, ≤ 30 years) and advanced age (AA, ≥ 38 years) were profiled by microarray, and validated in 20 paired samples...
2017: PloS One
https://www.readbyqxmd.com/read/28620410/transcriptome-analysis-of-differentially-expressed-genes-induced-by-low-and-high-potassium-levels-provides-insight-into-fruit-sugar-metabolism-of-pear
#8
Changwei Shen, Jie Wang, Xiaoqian Shi, Yalong Kang, Changyan Xie, Lirun Peng, Caixia Dong, Qirong Shen, Yangchun Xu
Potassium (K) deficiency is a common abiotic stress that can inhibit the growth of fruit and thus reduce crop yields. Little research has been conducted on pear transcriptional changes under low and high K conditions. Here, we performed an experiment with 7-year-old pot-grown "Huangguan" pear trees treated with low, Control or high K levels (0, 0.4, or 0.8 g·K2O/kg soil, respectively) during fruit enlargement and mature stages. We identified 36,444 transcripts from leaves and fruit using transcriptome sequencing technology...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28575154/effects-of-propylene-glycol-or-elevated-lh-during-follicle-development-on-ovulation-fertilization-and-early-embryo-development
#9
Katherine S Hackbart, Robb W Bender, Paulo D Carvalho, Lais M Vieira, Ana R Dresch, Jerry N Guenther, Hidir Gencoglu, Anibal B Nascimento, Randy D Shaver, Milo C Wiltbank
Seventeen non-lactating Holstein cows were superovulated in a Latin-square designed experiment to determine effects of increased propylene glycol (PROP) and LH during antral follicle development on ovarian function, fertilization, and early embryo quality. PROP was orally drenched every 4 h for 7d to induce hyperinsulinemia and associated metabolic changes. LH concentrations were altered by increasing LH (3-fold) during last 2 d of superovulation. Treatment groups were: 1) Control-oral drenching with water plus low-LH preparation; 2) HLH-water plus high-LH preparation; 3) PROP-drenching with PROP plus low-LH; 4) PROP/HLH-PROP plus high-LH...
May 30, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28571659/gut-microbiota-endocrine-disrupting-chemicals-and-the-diabetes-epidemic
#10
REVIEW
Ganesan Velmurugan, Tharmarajan Ramprasath, Mithieux Gilles, Krishnan Swaminathan, Subbiah Ramasamy
Diabetes is rapidly emerging as one of the biggest health concerns worldwide, with profound implications for disability, mortality, and costs. This suddenly escalating rate of diabetes correlates with global industrialization and the production of plastics, pesticides, synthetic fertilizers, electronic waste, and food additives that release endocrine-disrupting chemicals (EDCs) into the environment and the food chain. Emerging evidence indicates an association between exposure of EDCs and diabetes. In humans, these chemicals are also metabolized by the gut microbiota and thereby their toxicodynamics are altered...
May 29, 2017: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/28535836/season-of-birth-is-associated-with-first-lactation-milk-yield-in-holstein-friesian-cattle
#11
M Van Eetvelde, M M Kamal, L Vandaele, G Opsomer
The aim of the present research was to assess factors associated with first-lactation milk yield in dairy heifers, including maternal and environmental factors, factors related to the development of the heifer and factors related to its offspring such as gender of the calf. In addition, the potential underlying mechanism, in particular metabolic adaptations, was further explored. Data on body growth, reproduction and milk yield of 74 Holstein Friesian heifers on three herds in Flanders (Belgium) were collected...
May 24, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28511935/bile-acids-and-male-fertility-from-mouse-to-human
#12
REVIEW
Lauriane Sèdes, Emmanuelle Martinot, Marine Baptissart, Silvère Baron, Françoise Caira, Claude Beaudoin, David H Volle
Next to their involvement in digestion, bile acids have been defined as signaling molecules. They have been demonstrated to control many physiological functions among which lipid homeostasis, glucose and energy metabolisms. Bile acids are ligands of several receptors and multiple studies using transgenic mouse models defined the major roles of their respective nuclear and membrane receptors namely the Farnesoid-X-Receptor (FXRα) and the G-protein-coupled bile acid receptor 1(GPBAR1; TGR5). Here we review the reports highlighting the impacts of bile acids on testicular physiology and on male reproductive functions...
August 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28475193/metabolomic-profiling-and-biochemical-evaluation-of-the-follicular-fluid-of-endometriosis-patients
#13
Santonastaso Marianna, Pucciarelli Alessia, Costantini Susan, Caprio Francesca, Sorice Angela, Capone Francesca, Natella Antonella, Iardino Patrizia, Colacurci Nicola, Chiosi Emilio
Diseases are complex systems that can be studied through the integration of data derived from different disciplines to obtain a global and reliable picture of the biological phenomenon under investigation. Based on the recent observations that the metabolomics profiling of follicular fluids reflects the ovarian microenvironment of women and that endometriosis represents an example of complex diseases, clearly diagnosed by laparoscopy, we thought that the follicular fluids of endometriosis patients can represent a study model to evaluate the possibility of integrating data obtained by different approaches...
June 1, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28462079/loss-of-hepatic-deptor-alters-the-metabolic-transition-to-fasting
#14
Alexandre Caron, Mathilde Mouchiroud, Nicolas Gautier, Sébastien M Labbé, Romain Villot, Laurie Turcotte, Blandine Secco, Guillaume Lamoureux, Michael Shum, Yves Gélinas, André Marette, Denis Richard, David M Sabatini, Mathieu Laplante
OBJECTIVE: The mechanistic target of rapamycin (mTOR) is a serine/threonine kinase that functions into distinct protein complexes (mTORC1 and mTORC2) that regulates growth and metabolism. DEP-domain containing mTOR-interacting protein (DEPTOR) is part of these complexes and is known to reduce their activity. Whether DEPTOR loss affects metabolism and organismal growth in vivo has never been tested. METHODS: We have generated a conditional transgenic mouse allowing the tissue-specific deletion of DEPTOR...
May 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28458903/using-kisspeptin-to-assess-gnrh-function-in-an-unusual-case-of-primary-amenorrhoea
#15
S Vimalesvaran, S Narayanaswamy, L Yang, J K Prague, A Buckley, A D Miras, S Franks, K Meeran, W S Dhillo
SUMMARY: Primary amenorrhoea is defined as the failure to commence menstruation by the age of 15 years, in the presence of normal secondary sexual development. The potential causes of primary amenorrhoea extend from structural to chromosomal abnormalities. Polycystic ovarian syndrome (PCOS) is a common cause of secondary amenorrhoea but an uncommon cause of primary amenorrhoea. An early and prompt diagnosis of PCOS is important, as up to 30% of these women are predisposed to glucose intolerance and obesity, with the subgroup of women presenting with primary amenorrhoea and PCOS displaying a higher incidence of metabolic dysfunction...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28407789/identification-and-functional-characterisation-of-a-schistosoma-japonicum-insulin-like-peptide
#16
Xiaofeng Du, Donald P McManus, Pengfei Cai, Wei Hu, Hong You
BACKGROUND: Previous studies have shown that insulin receptors in schistosomes, triggered by host insulin, play an important role in parasite growth, development and fecundity by regulating glucose metabolism. However, limited information is available on the recently identified endogenous insulin-like peptide (ILP) in blood flukes. RESULTS: We isolated ILPs from Schistosoma japonicum (SjILP) and S. recognised (SmILP) and present results of their molecular and structural analysis...
April 14, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28344405/biochemical-components-of-seminal-plasma-and-their-correlation-to-the-fresh-seminal-characteristics-in-marwari-stallions-and-poitou-jacks
#17
Thirumala Rao Talluri, Gorakh Mal, Sanjay Kumar Ravi
AIM: To investigate various biochemical components of seminal plasma in Marwari stallions and Poitou Jacks and to find out their correlation with that of the seminal characteristics. MATERIALS AND METHODS: In this study, semen was collected from six Marwari stallions and six Poitou jacks aged from 4 to 6 years and with known fertility status. The semen collection from the stallions were collected during the breeding season, i.e., between the months of April and June...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28323106/implications-of-epigallocatechin-3-gallate-in-cultured-human-sertoli-cells-glycolytic-and-oxidative-profile
#18
Tânia R Dias, Marco G Alves, Joaquina Silva, Alberto Barros, Mário Sousa, Susana Casal, Branca M Silva, Pedro F Oliveira
Sertoli cells are crucial for the success of spermatogenesis, which is the biological process that ensures male fertility. These cells present high metabolic rates, being often subjected to high oxidative stress levels that, if uncontrolled, may compromise male fertility. Since the most abundant tea catechin, epigallocatechin-3-gallate (EGCG), has demonstrated a potent preventive activity against oxidative stress, we have evaluated its effect at concentrations of 5 and 50μM, on the metabolism, mitochondrial functionality and oxidative profile of human Sertoli cells (hSCs)...
March 18, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28295644/effect-of-vitrification-on-the-mrna-transcriptome-of-bovine-oocytes
#19
N Wang, C-Y Li, H-B Zhu, H-S Hao, H-Y Wang, C-L Yan, S-J Zhao, W-H Du, D Wang, Y Liu, Y-W Pang, X-M Zhao
Vitrification has been shown to decrease the developmental capacity of mammalian oocytes, and this is closely associated with the abnormal mRNA expressions of vitrified oocytes. However, the effect of vitrification on transcriptional machinery of oocytes examined by RNA sequencing (RNA-seq) has yet to be defined. In the present study, the mRNA transcriptomes of fresh and vitrified bovine oocytes were analysed by Smart-seq2 with the differently expressed genes determined by DEseq2 (an adjusted p-value of .05 and a minimum fold change of 2)...
March 12, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28268040/long-term-liquid-storage-and-reproductive-evaluation-of-an-innovative-boar-semen-extender-formula12-%C3%A2-containing-a-non-reducing-disaccharide-and-an-enzymatic-agent
#20
Carla Bresciani, Annalisa Bianchera, Ruggero Bettini, Annamaria Buschini, Laura Marchi, Clotilde Silvia Cabassi, Alberto Sabbioni, Federico Righi, Claudio Mazzoni, Enrico Parmigiani
There are no reports of saccharolytic enzymes being used in the preparation of formulations for animal semen extenders. In the present study, the use of an innovative semen extender (Formula12(®)) in the long-term liquid storage of boar semen at 17°C was evaluated. The formulation included use of a disaccharide (sucrose) as the energy source precursor coupled to an enzymatic agent (invertase). The innovative extender was evaluated and compared in vitro to a commercial extender (Vitasem LD(®)) for the following variables: Total Motility (TM), Forward Progressive Motility (FPM), sperm morphology, membrane integrity, acrosome integrity, and chromatin instability...
February 24, 2017: Animal Reproduction Science
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