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glucose metabolism and fertility

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https://www.readbyqxmd.com/read/29207483/biochemical-physiological-and-transcriptomic-comparison-between-burley-and-flue-cured-tobacco-seedlings-in-relation-to-carbohydrates-and-nitrate-content
#1
Yafei Li, Huijuan Yang, Dong Chang, Shuzhen Lin, Yuqing Feng, Jingjing Li, Hongzhi Shi
Burley tobacco is a genotype of chloroplast-deficient mutant with accumulates high levels of tobacco-specific nitrosamines (TSNAs) which would induce malignant tumors in animals. Nitrate is a principle precursor of tobacco-specific nitrosamines. Nitrate content in burley tobacco was significantly higher than that in flue-cured tobacco. The present study investigated differences between the two tobacco types to explore the mechanisms of nitrate accumulation in burley tobacco. transcripts (3079) related to the nitrogen and carbon metabolism were observed...
December 2, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29178045/considering-choline-as-methionine-precursor-lipoproteins-transporter-hepatic-promoter-and-antioxidant-agent-in-dairy-cows
#2
REVIEW
Imtiaz Hussain Raja Abbasi, Farzana Abbasi, Rab N Soomro, Mohamed E Abd El-Hack, Mervat A Abdel-Latif, Wen Li, Ren Hao, Feifei Sun, Bello M Bodinga, Khawar Hayat, Junhu Yao, Yangchun Cao
During the transition period, fatty liver syndrome may be caused in cows undergo negative energy balance, ketosis or hypocalcemia, retained placenta or mastitis problems. During the transition stage, movement of non-esterified fatty acids (NEFA) increases into blood which declines the hepatic metabolism or reproduction and consequently, lactation performance of dairy cows deteriorates. Most of studies documented that, choline is an essential nutrient which plays a key role to decrease fatty liver, NEFA proportion, improve synthesis of phosphatidylcholine, maintain lactation or physiological function and work as anti-oxidant in the transition period of dairy cows...
November 25, 2017: AMB Express
https://www.readbyqxmd.com/read/29136166/diabetes-induced-hyperglycemia-impairs-male-reproductive-function-a-systematic-review
#3
Constanze C Maresch, Dina C Stute, Marco G Alves, Pedro F Oliveira, David M de Kretser, Thomas Linn
BACKGROUND: Hyperglycemia can result from a loss of pancreatic beta-cells or a decline in their function leading to decreased insulin secretion or may arise from insulin resistance and variable degrees of inadequate insulin secretion resulting in diabetes and related comorbidities. To date several reviews have addressed the issue of diabetes-related male infertility but most have focused on how metabolic syndrome causes the decline in male fertility. However, a comprehensive overview as to how diabetes-induced hyperglycemia impairs male fertility is missing...
November 10, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/29105171/performance-body-fat-reserves-and-plasma-metabolites-in-brown-swiss-dairy-cows-indoor-feeding-versus-pasture-based-feeding
#4
H-J Frey, J J Gross, R Petermann, S Probst, R M Bruckmaier, P Hofstetter
Feeding dairy cows indoors or on pasture affects not only labour, machinery and housing costs, but also animals' performance and metabolism. This study investigates the effects of indoor feeding (IF) with a partial-mixed ration (PMR) versus pasture-based feeding (PF) on milk production, fertility, backfat thickness (BFT), body weight (BW) loss and energy metabolism of Brown Swiss (BS) dairy cows with similar genetic production potential. The IF herd consisted of 13 cows fed a PMR composed of maize and grass silage plus protein concentrate according to each cow's requirements...
November 3, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29083015/prenatal-and-or-postnatal-high-fat-diet-alters-testicular-parameters-in-adult-wistar-albino-rats
#5
Pamella Campos-Silva, Waldemar S Costa, Francisco J B Sampaio, Bianca M Gregorio
Here, we evaluated the effects of a high-fat diet during the prenatal and/or postnatal period on the metabolic parameters and testes of 4-month-old Wistar rats. The experimental groups, composed of male Wistar rats, were: C/C (n=8), HF/HF (n=8) (pups with the same diet as their dams, after weaning), C/HF (n=8), and HF/C (n=9) (pups with a different diet after weaning, from that of their dams). The biometric parameters, blood glucose levels, serum levels, the gonadosomatic index, sperm parameters, testes, and genital fat deposits were evaluated...
October 30, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28993852/the-effects-of-the-obesogen-tributyltin-on-the-metabolism-of-sertoli-cells-cultured-ex-vivo
#6
Ana M Cardoso, Marco G Alves, Ana C Sousa, Ivana Jarak, Rui A Carvalho, Pedro F Oliveira, José E Cavaco, Luís Rato
Human exposure to environmental contaminants is widespread. Some of these contaminants have the ability to interfere with adipogenesis, being thus considered as obesogens. Recently, obesogens have been singled out as a cause of male infertility. Sertoli cells (SCs) are essential for male fertility and their metabolic performance, especially glucose metabolism, is under a tight endocrine control, being essential for the success of spermatogenesis. Herein, we studied the impact of the model obesogen tributyltin in the metabolic profile of SCs...
October 9, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28973717/tissue-distribution-and-early-developmental-expression-patterns-of-aldolase-a-b-and-c-in-grass-carp-ctenopharyngodon-idellus
#7
J J Fan, J J Bai, D M Ma, L Y Yu, P Jiang
Aldolase is a key enzyme involved in glycolysis, gluconeogenesis, and the pentose phosphate pathway. To establish the expression patterns of all three aldolase isozyme genes in different tissues and during early embryogenesis in lower vertebrates, as well as to explore the functional differences between these three isozymes, the grass carp was selected as a model owing to its relatively high glucose-metabolizing capability. Based on the cDNA sequences of the aldolase A, B, and C genes, the expression patterns of these three isozymes were analyzed in different tissues and during early embryogenesis using quantitative real-time polymerase chain reaction (qRT-PCR)...
September 27, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28911368/systemic-adiponectin-treatment-reverses-polycystic-ovary-syndrome-like-features-in-an-animal-model
#8
Anusha Singh, Puran Bora, Amitabh Krishna
The present study examined the efficacy of adiponectin for regulating the reproductive, metabolic and fertility status of mice with polycystic ovary syndrome (PCOS). PCOS was induced in prepubertal (21- to 22-day-old) mice using dehydroepiandrosterone (6mg 100g-1day-1 for 25days), after which mice were administered either a low or high dose of adiponectin (5 or 15µgmL-1, s.c., respectively). PCOS mice exhibited typical features, including the presence of numerous cystic follicles, increased circulating androgens, increased body mass, altered steroidogenesis, decreased insulin receptor expression and increased serum triglycerides, serum glucose, Toll-like receptor (TLR)-4 (a marker of inflammation) and vascular endothelial growth factor (VEGF; a marker of angiogenesis)...
September 15, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28881243/assessing-biological-effects-of-fluoxetine-in-developing-zebrafish-embryos-using-gas-chromatography-mass-spectrometry-based-metabolomics
#9
Priti Mishra, Zhiyuan Gong, Barry C Kelly
Continuous low-dose exposure of pharmaceutically active compounds (PhACs) in aquatic ecosystems is a concern worldwide. In this study, we utilized a gas chromatography mass spectrometry (GC-MS) based metabolomics approach to assess endogenous metabolite changes in developing zebrafish embryos exposed to different concentrations of the widely used antidepressant, fluoxetine. Embryos were exposed from 2 h post fertilization (hpf) until 96 hpf. Using the Fiehn GC-MS library, a total of 31 metabolites were positively identified in embryos...
August 31, 2017: Chemosphere
https://www.readbyqxmd.com/read/28851737/cholesterol-metabolism-and-cx43-cx46-cx50-gap-junction-protein-expression-and-localisation-in-normal-and-diabetic-and-obese-ob-ob-and-db-db-mouse-testes
#10
R-Marc Pelletier, Casimir D Akpovi, Li Chen, Maria Leiza Vitale
Decreased fertility and birth rates are afflictions arising from metabolic disorders. This study assesses cholesterol metabolism and Cx46, Cx50, Cx43 expression in interstitium- and seminiferous tubule-enriched fractions of leptin-deficient (ob/ob) and leptin receptor-deficient (db/db) mice, two type 2 diabetes and obesity models associated with infertility. Testosterone decreased, glucose, free and esterified cholesterol increased in serum whereas in interstitium, free and esterified cholesterol decreased in ob/ob and db/db...
August 29, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28834550/osteocalcin-dependent-regulation-of-glucose-metabolism-and-fertility-skeletal-implications-for-the-development-of-insulin-resistance
#11
REVIEW
Pawanrat Tangseefa, Sally K Martin, Stephen Fitter, Paul A Baldock, Christopher G Proud, Andrew C W Zannettino
The skeleton has recently emerged as a critical insulin target tissue that regulates whole body glucose metabolism and male reproductive function. While our understanding of these new regulatory axes remains in its infancy, the bone-specific protein, osteocalcin, has been shown to be centrally involved. Undercarboxylated osteocalcin acts as a secretagogue in a feed-forward loop to stimulate pancreatic β-cell proliferation and insulin secretion, improve insulin sensitivity, and promote testosterone production...
August 23, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28804986/effects-of-hydroxycitric-acid-on-lipid-droplet-accumulation-in-chicken-embryos
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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-luteinizing-hormone-during-follicle-development-on-ovulation-fertilization-and-early-embryo-development
#20
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 nonlactating Holstein cows were superovulated in a Latin-square designed experiment to determine the effects of increased propylene glycol (PROP) and luteinizing hormone (LH) during antral follicle development on ovarian function, fertilization, and early embryo quality. PROP was orally drenched every 4 h for 7 days to induce hyperinsulinemia and associated metabolic changes. LH concentrations were altered by increasing LH (3-fold) during last 2 days of superovulation. Treatment groups were as follows: (1) control-oral drenching with water plus low-LH preparation; (2) high LH(HLH)-water plus HLH preparation; (3) PROP-drenching with PROP plus low LH; (4) PROP/HLH-PROP plus HLH...
October 1, 2017: Biology of Reproduction
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