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https://www.readbyqxmd.com/read/28922661/lysophosphatidic-acid-inhibits-insulin-signaling-in-primary-rat-hepatocytes-via-the-lpa3-receptor-subtype-and-is-increased-in-obesity
#1
Susann Fayyaz, Lukasz Japtok, Fabian Schumacher, Dominik Wigger, Tim Julius Schulz, Kathrin Haubold, Erich Gulbins, Heinz Völler, Burkhard Kleuser
BACKGROUND/AIMS: Obesity is a main risk factor for the development of hepatic insulin resistance and it is accompanied by adipocyte hypertrophy and an elevated expression of different adipokines such as autotaxin (ATX). ATX converts lysophosphatidylcholine to lysophosphatidic acid (LPA) and acts as the main producer of extracellular LPA. This bioactive lipid regulates a broad range of physiological and pathological responses by activation of LPA receptors (LPA1-6). METHODS: The activation of phosphatidylinositide 3-kinases (PI3K) signaling (Akt and GSK-3ß) was analyzed via western blotting in primary rat hepatocytes...
September 1, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28915843/protective-effects-of-gaba-against-metabolic-and-reproductive-disturbances-in-letrozole-induced-polycystic-ovarian-syndrome-in-rats
#2
Asad Ullah, Sarwat Jahan, Suhail Razak, Madeeha Pirzada, Hizb Ullah, Ali Almajwal, Naveed Rauf, Tayyaba Afsar
BACKGROUND: PCOs is a heterogeneous disorder with anovulation/oligo ovulation usually taken as oligo menorrhoea or amenorrhoea, hyperandrogenemia, hirsutism, acne, androgen alopecia and polycystic ovaries as the key diagnostic feathers. The study was undertaken to investigate the possible protective and ameliorating effects of GABA in Letrozole induced PCOS model in rats by targeting insulin resistance. METHODS: PCOs in Adult female rat was induced by the daily gastric administration of letrozole (1 mg/kg/day) in CMC (0...
September 15, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28899231/neuron-type-specific-utility-in-a-brain-machine-interface-a-pilot-study
#3
Martha G Garcia-Garcia, Austin J Bergquist, Hector Vargas-Perez, Mary K Nagai, Jose Zariffa, Cesar Marquez-Chin, Milos R Popovic
Context Firing rates of single cortical neurons can be volitionally modulated through biofeedback (i.e. operant conditioning), and this information can be transformed to control external devices (i.e. brain-machine interfaces; BMIs). However, not all neurons respond to operant conditioning in BMI implementation. Establishing criteria that predict neuron utility will assist translation of BMI research to clinical applications. Findings Single cortical neurons (n=7) were recorded extracellularly from primary motor cortex of a Long-Evans rat...
September 12, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28891521/effects-of-high-fat-diet-and-perinatal-dioxin-exposure-on-development-of-body-size-and-expression-of-platelet-derived-growth-factor-receptor-%C3%AE-in-the-rat-brain
#4
Amartuvshin Bor, Muneko Nishijo, Hiroshi Nishimaru, Tomoya Nakamura, Nghi Ngoc Tran, Quang Van Le, Yusaku Takamura, Jumpei Matsumoto, Yoshikazu Nishino, Hisao Nishijo
Environmental exposure to dioxins, consumption of a high fat diet, and platelet-derived growth factor receptor β signaling in the brain affect feeding behavior, which is an important determinant of body growth. In the present study, we investigated the effects of prenatal exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin and high fact diet after weaning on body growth and expression of platelet-derived growth factor receptor β in the brain in rat pups. Subjects from the control and dioxin exposure groups were assigned to 1 of 3 different diet groups: standard diet, high fat diet in the juvenile period, or high fat diet in adulthood...
2017: Journal of Integrative Neuroscience
https://www.readbyqxmd.com/read/28823096/sub-chronic-exposure-to-low-concentration-of-dibutyl-phthalate-affects-anthropometric-parameters-and-markers-of-obesity-in-rats
#5
Khalid Abdul Mjaeed, Habib Ur Rehman, Muhammad Shahbaz Yousaf, Hafsa Zaneb, Imtiaz Rabbani, Sajid Khan Tahir, Muhammad Afzal Rashid
Dibutyl phthalate is an important phthalate ester extensively used in various products like plastics, adhesives, inks, pharmaceuticals, lacquers, varnishes, paper coatings, safety glasses, and cosmetics. The exposure of DBP to "one's health" is therefore inevitable. The present study focuses on elucidating the effect of low doses of DBP on anthropometric parameters and markers of obesity in rats in a 13-week study. A total of 48 rats were divided into three treatment groups as mg DBP/kg body weight per day: (a) 0 mg/kg (control), (b) 10 mg/kg (DBP-10), and (c) 50 mg/kg (DBP-50)...
August 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28804568/preventive-effects-of-kudzu-root-on-bone-loss-and-cartilage-degradation-in-ovariectomized-rat
#6
Yunyun Luo, Shuang Zheng, Yujia Ding, Yueqin Dai, Yi Zhou, Ruifeng Xiang, Anne C Bay-Jensen, Morten A Karsdal, Per Qvist, Qinlong Zheng
The clinical utility of Traditional Chinese Medicine (TCM) herbs/roots extracts in osteoporosis (OP) and osteoarthritis (OA) has been described in multiple reports, but there have been few studies of TCM for preventing bone loss and cartilage degradation simultaneously. Six-month-old female Sprague-Dawley rats each were subjected to ovariectomized (OVX) or sham surgery and treated orally once daily with herbal extracts or vehicle. Body weight was recorded weekly, and blood samples were collected from fasting animals at different time points...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28795416/the-acute-effect-of-beta-guanidinopropionic-acid-versus-creatine-or-placebo-in-healthy-men-abc-trial-a-randomized-controlled-first-in-human-trial
#7
F A Karamat, D L Horjus, Y C Haan, L van der Woude, M C Schaap, I Oudman, G A van Montfrans, R Nieuwland, G S Salomons, J F Clark, L M Brewster
AIM: Increasing evidence indicates that the ATP-generating enzyme creatine kinase (CK) is involved in hypertension. CK rapidly regenerates ATP from creatine phosphate and ADP. Recently, we showed that beta-guanidinopropionic acid (GPA), a kidney-synthesized creatine analogue and competitive CK inhibitor, reduced blood pressure in spontaneously hypertensive rats. To further develop the substance as a potential blood pressure-lowering agent, we assessed the tolerability of a sub-therapeutic GPA dose in healthy men...
August 10, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28736255/isoalantolactone-derivative-promotes-glucose-utilization-in-skeletal-muscle-cells-and-increases-energy-expenditure-in-db-db-mice-via-activating-ampk-dependent-signaling
#8
Deepti Arha, E Ramakrishna, Anand P Gupta, Amit K Rai, Aditya Sharma, Ishbal Ahmad, Mohammed Riyazuddin, Jiaur R Gayen, Rakesh Maurya, Akhilesh K Tamrakar
Augmenting glucose utilization and energy expenditure in skeletal muscle via AMP-activated protein kinase (AMPK) is an imperative mechanism for the management of type 2 diabetes. Chemical derivatives (2a-2h, 3, 4a-4d, 5) of the isoalantolactone (K007), a bioactive molecule from roots of Inula racemosa were synthesized to optimize the bioactivity profile to stimulate glucose utilization in skeletal muscle cells. Interestingly, 4a augmented glucose uptake, driven by enhanced translocation of glucose transporter 4 (GLUT4) to cell periphery in L6 rat skeletal muscle cells...
July 20, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28684967/cyclocarya-paliurus-batal-ijinskaja-aqueous-extract-cpae-ameliorates-obesity-by-improving-insulin-signaling-in-the-hypothalamus-of-a-metabolic-syndrome-rat-model
#9
Guangyuan Xu, Hisae Yoshitomi, Wen Sun, Xuan Guo, Lili Wu, Xiangyu Guo, Lingling Qin, Yixin Fan, Tunhai Xu, Tonghua Liu, Ming Gao
BACKGROUND: Antiobesity drugs may not be optimal for treating obesity. However novel antiobesity agents, especially those derived from natural products, may be suitable. Therefore, we investigated the effects and mechanisms of Cyclocarya paliurus (CP) aqueous extract (CPAE) on obesity. METHODS: SHR.Cg-Leprcp/NDmcr (SHR/cp) rats were used as a model of obesity and metabolic syndrome. Experimental animals were allocated into two groups-control and CPAE (0.5 g/kg)-for a 7-week treatment period...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28624500/phoenixin-14-concentrations-are-increased-in-association-with-luteinizing-hormone-and-nesfatin-1-concentrations-in-women-with-polycystic-ovary-syndrome
#10
Kamran Ullah, Tanzil Ur Rahman, Dan-Dan Wu, Xian-Hua Lin, Ye Liu, Xiao-Yan Guo, Peter C K Leung, Run-Ju Zhang, He-Feng Huang, Jian-Zhong Sheng
BACKGROUND: Polycystic ovary syndrome (PCOS) is commonly characterized by obesity, insulin resistance (IR), hyperandrogenemia and hirsutism. Following the reported relationship between phoenixin-14 and gonadotropin production in rat hypothalamic-pituitary-gonadal axis, the present study was designed to investigate the circulating concentrations of phoenixin-14 and their associations with the concentrations of sex hormones including luteinizing hormone (LH), follicular stimulating hormone (FSH), estradiol (E2), progesterone (P4) and total testosterone (TT) in PCOS patients...
August 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28620273/state-dependent-decoding-algorithms-improve-the-performance-of-a-bidirectional-bmi-in-anesthetized-rats
#11
Vito De Feo, Fabio Boi, Houman Safaai, Arno Onken, Stefano Panzeri, Alessandro Vato
Brain-machine interfaces (BMIs) promise to improve the quality of life of patients suffering from sensory and motor disabilities by creating a direct communication channel between the brain and the external world. Yet, their performance is currently limited by the relatively small amount of information that can be decoded from neural activity recorded form the brain. We have recently proposed that such decoding performance may be improved when using state-dependent decoding algorithms that predict and discount the large component of the trial-to-trial variability of neural activity which is due to the dependence of neural responses on the network's current internal state...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28619389/the-promising-effect-of-linagliptin-and-or-indole-3-carbinol-on-experimentally-induced-polycystic-ovarian-syndrome
#12
Ahmed M Kabel, Aisha H Al-Shehri, Rehab A Al-Talhi, Maaly A Abd Elmaaboud
Polycystic ovarian syndrome (PCOS) is one of the most common medical conditions that lead to female infertility worldwide. The aim of this study was to assess the effect of linagliptin and/or indole-3-carbinol (I3C) on PCOS in female rats. Fifty female Wistar rats were randomly allocated into five equal groups: Control group; Letrozole-induced PCOS group; Letrozole + Linagliptin group; Letrozole + I3C group and Letrozole + Linagliptin + I3C group. Body weight, body mass index, Lee index and ovarian indices were determined...
June 13, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28615213/experimental-and-human-evidence-for-lipocalin-2-neutrophil-gelatinase-associated-lipocalin-ngal-in-the-development-of-cardiac-hypertrophy-and-heart-failure
#13
Francine Z Marques, Priscilla R Prestes, Sean G Byars, Scott C Ritchie, Peter Würtz, Sheila K Patel, Scott A Booth, Indrajeetsinh Rana, Yosuke Minoda, Stuart P Berzins, Claire L Curl, James R Bell, Bryan Wai, Piyush M Srivastava, Antti J Kangas, Pasi Soininen, Saku Ruohonen, Mika Kähönen, Terho Lehtimäki, Emma Raitoharju, Aki Havulinna, Markus Perola, Olli Raitakari, Veikko Salomaa, Mika Ala-Korpela, Johannes Kettunen, Maree McGlynn, Jason Kelly, Mary E Wlodek, Paul A Lewandowski, Lea M Delbridge, Louise M Burrell, Michael Inouye, Stephen B Harrap, Fadi J Charchar
BACKGROUND: Cardiac hypertrophy increases the risk of developing heart failure and cardiovascular death. The neutrophil inflammatory protein, lipocalin-2 (LCN2/NGAL), is elevated in certain forms of cardiac hypertrophy and acute heart failure. However, a specific role for LCN2 in predisposition and etiology of hypertrophy and the relevant genetic determinants are unclear. Here, we defined the role of LCN2 in concentric cardiac hypertrophy in terms of pathophysiology, inflammatory expression networks, and genomic determinants...
June 14, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28599657/comparison-of-methods-for-calculating-the-health-costs-of-endocrine-disrupters-a-case-study-on-triclosan
#14
Radka Prichystalova, Jean-Baptiste Fini, Leonardo Trasande, Martine Bellanger, Barbara Demeneix, Laura Maxim
BACKGROUND: Socioeconomic analysis is currently used in the Europe Union as part of the regulatory process in Regulation Registration, Evaluation and Authorisation of Chemicals (REACH), with the aim of assessing and managing risks from dangerous chemicals. The political impact of the socio-economic analysis is potentially high in the authorisation and restriction procedures, however, current socio-economic analysis dossiers submitted under REACH are very heterogeneous in terms of methodology used and quality...
June 9, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28576724/interaction-of-gaba-and-norepinephrine-in-the-lateral-division-of-the-bed-nucleus-of-the-stria-terminals-in-anesthetized-rat-correlating-single-unit-and-cardiovascular-responses
#15
Fahimeh Yeganeh, Ali Nasimi, Masoumeh Hatam
The bed nucleus of the stria terminalis (BST) consists of multiple anatomically distinct nuclei. The lateral division, which receives dense noradrenergic innervation, has been implicated in cardiovascular regulation and modulation of responses to stress. This study is performed to identify the cardiovascular and single-unit responses of the lateral BST to norepinephrine (NE), involved adrenoceptors, and possible interaction with GABAergic system of the BST in urethane-anesthetized rats. NE, adrenoreceptor antagonists, and GABAA antagonist were microinjected into the lateral division of BST, while arterial pressure (AP), heart rate (HR), and single-unit responses were simultaneously recorded...
May 31, 2017: Neuroscience
https://www.readbyqxmd.com/read/28463967/increased-anxiety-like-behavior-is-associated-with-the-metabolic-syndrome-in-non-stressed-rats
#16
Daniela Rebolledo-Solleiro, Gabriel Roldán-Roldán, Daniel Díaz, Myrian Velasco, Carlos Larqué, Guadalupe Rico-Rosillo, Gloria Bertha Vega-Robledo, Elena Zambrano, Marcia Hiriart, Miguel Pérez de la Mora
Metabolic syndrome (MS) is a cluster of signs that increases the risk to develop diabetes mellitus type 2 and cardiovascular disease. In the last years, a growing interest to study the relationship between MS and psychiatric disorders, such as depression and anxiety, has emerged obtaining conflicting results. Diet-induced MS rat models have only examined the effects of high-fat or mixed cafeteria diets to a limited extent. We explored whether an anxiety-like behavior was associated with MS in non-stressed rats chronically submitted to a high-sucrose diet (20% sucrose in drinking water) using three different anxiety paradigms: the shock-probe/burying test (SPBT), the elevated plus-maze (EPM) and the open-field test (OFT)...
2017: PloS One
https://www.readbyqxmd.com/read/28404742/autonomic-nervous-system-activation-mediates-the-increase-in-whole-body-glucose-uptake-in-response-to-electroacupuncture
#17
Anna Benrick, Milana Kokosar, Min Hu, Martin Larsson, Manuel Maliqueo, Rodrigo Rodrigues Marcondes, Marzia Soligo, Virginia Protto, Elisabet Jerlhag, Antonina Sazonova, Carl Johan Behre, Kurt Højlund, Peter Thorén, Elisabet Stener-Victorin
A single bout of low-frequency electroacupuncture (EA) causing muscle contractions increases whole-body glucose uptake in insulin-resistant rats. We explored the underlying mechanism of this finding and whether it can be translated into clinical settings. Changes in glucose infusion rate (GIR) were measured by euglycemic-hyperinsulinemic clamp during and after 45 min of low-frequency EA in 21 overweight/obese women with polycystic ovary syndrome (PCOS) and 21 controls matched for age, weight, and body mass index (experiment 1) and in rats receiving autonomic receptor blockers (experiment 2)...
April 12, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28386069/tissue-harvesting-site-and-culture-medium-affect-attachment-growth-and-phenotype-of-ex-vivo-expanded-oral-mucosal-epithelial-cells
#18
Rakibul Islam, Jon Roger Eidet, Reza A Badian, Marit Lippestad, Edward Messelt, May Griffith, Darlene A Dartt, Tor Paaske Utheim
Transplantation of cultured oral mucosal epithelial cells (OMECs) is a promising treatment strategy for limbal stem cell deficiency. In order to improve the culture method, we investigated the effects of four culture media and tissue harvesting sites on explant attachment, growth, and phenotype of OMECs cultured from Sprague-Dawley rats. Neither choice of media or harvesting site impacted the ability of the explants to attach to the culture well. Dulbecco's modified Eagle's medium/Ham's F12 (DMEM) and Roswell Park Memorial Institute 1640 medium (RPMI) supported the largest cellular outgrowth...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28330968/examination-of-carnitine-palmitoyltransferase-1-abundance-in-white-adipose-tissue-implications-in-obesity-research
#19
Jaycob D Warfel, Bolormaa Vandanmagsar, Olga S Dubuisson, Sydney M Hodgeson, Carrie M Elks, Eric Ravussin, Randall L Mynatt
Carnitine palmitoyltransferase 1 (CPT1) is essential for the transport of long-chain fatty acids into the mitochondria for oxidation. Recently, it was reported that decreased CPT1b mRNA in adipose tissue was a contributing factor for obesity in rats. We therefore closely examined the expression level of Cpt1 in adipose tissue from mice, rats, and humans. Cpt1a is the predominate isoform in adipose tissue from all three species. Rat white adipose tissue has a moderate amount of Cpt1b mRNA, but it is very minor compared with Cpt1b expression in muscle...
May 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28274727/serum-uric-acid-is-not-independently-associated-with-plasma-renin-activity-and-plasma-aldosterone-in-hypertensive-adults
#20
COMPARATIVE STUDY
G Mulè, A Castiglia, M Morreale, G Geraci, C Cusumano, L Guarino, D Altieri, M Panzica, F Vaccaro, S Cottone
BACKGROUND AND AIMS: In experimental investigations conducted in rats, raising serum uric acid (SUA) levels resulted in the stimulation of intrarenal renin expression. Studies in humans exploring the association of SUA with plasma renin activity (PRA) yielded conflicting results. Moreover, little is known about the relationship of SUA with plasma aldosterone concentration (PAC). The study aimed to assess the relationship between SUA levels, PRA, and PAC and the influence of age, gender, body mass index (BMI), and hyperuricemia on these relationships in subjects with essential hypertension (EH)...
April 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
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