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Gastric stimulator

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https://www.readbyqxmd.com/read/29150643/%C3%AE-eudesmol-an-oxygenized-sesquiterpene-stimulates-appetite-via-trpa1-and-the-autonomic-nervous-system
#1
Kazuaki Ohara, Takafumi Fukuda, Yuko Ishida, Chika Takahashi, Rena Ohya, Mikio Katayama, Kunitoshi Uchida, Makoto Tominaga, Katsuya Nagai
Transient receptor potential ankyrin 1 (TRPA1) is a calcium-permeable non-selective cation channel, which is activated by various noxious or irritant substances in nature. TRPA1 activators have been generally recognized as noxious, however, foods and beverages containing TRPA1 activators are preferably consumed; the reasons for this discrepancy are not well understood. We demonstrate that TRPA1 is involved in the stimulatory appetite control mechanism. β-Eudesmol is an oxygenated sesquiterpene contained in medicinal or edible plants which activates TRPA1...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29149074/central-cns-and-peripheral-gastric-tissue-selective-monitoring-of-somatostatin-srif-with-micro-sensor-and-voltammetry-in-rats-influence-of-growth-factors-gh-egf
#2
Francesco Crespi
Somatostatin (SRIF) is widely distributed throughout the body, and regulates the endocrine system via interactions with various hormones, including the pituitary growth hormone, the thyroid stimulating hormone and the majority of the hormones of the gastrointestinal tract. SRIF is present in the central nervous system (CNS), where it affects rates of neurotransmission, and is also reported to be active in the intestinal tract, with evidence that stressed rats present a significant decrease in antral somatostatin-like immunoreactivity (SLI)...
November 17, 2017: Biosensors
https://www.readbyqxmd.com/read/29142468/glucagon-like-peptide-2-modulates-the-nitrergic-neurotransmission-in-strips-from-the-mouse-gastric-fundus
#3
Rachele Garella, Eglantina Idrizaj, Chiara Traini, Roberta Squecco, Maria Giuliana Vannucchi, Maria Caterina Baccari
AIM: To investigate whether glucagon-like peptide-2 (GLP-2) influences the neurally-induced responses in gastric strips from mice, since no data are available. METHODS: For functional experiments, gastric fundal strips were mounted in organ baths containing Krebs-Henseleit solution. Mechanical responses were recorded via force-displacement transducers, which were coupled to a polygraph for continuous recording of isometric tension. Electrical field stimulation (EFS) was applied via two platinum wire rings through which the preparation was threaded...
October 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29142437/docking-based-screening-of-ficus-religiosa-phytochemicals-as-inhibitors-of-human-histamine-h2-receptor
#4
Amit Chaudhary, Birendra Singh Yadav, Swati Singh, Pramod Kumar Maurya, Alok Mishra, Shweta Srivastva, Pritish Kumar Varadwaj, Nand Kumar Singh, Ashutosh Mani
Background: Ficus religiosa L. is generally known as Peepal and belongs to family Moraceae. The tree is a source of many compounds having high medicinal value. In gastrointestinal tract, histamine H2 receptors have key role in histamine-stimulated gastric acid secretion. Their over stimulation causes its excessive production which is responsible for gastric ulcer. Objective: This study aims to screen the range of phytochemicals present in F. religiosa for binding with human histamine H2 and identify therapeutics for a gastric ulcer from the plant...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29141593/bidirectional-alteration-of-cav-1-expression-is-associated-with-mitogenic-conversion-of-its-function-in-gastric-tumor-progression
#5
Byung-Kyu Ryu, Min-Goo Lee, Nam-Hoon Kim, Kil Yeon Lee, Shin-Ju Oh, Jung-Rock Moon, Hyo Jong Kim, Sung-Gil Chi
BACKGROUND: Expression of caveolin-1 (Cav-1) is frequently altered in many human cancers and both tumor suppression and promotion functions of Cav-1 have been suggested based on its expression status. However, it remains unanswered how Cav-1 provokes opposite effects in different cancers or different phases of tumor progression. METHODS: To explore the implication of Cav-1 alteration in gastric tumorigenesis, the expression and mutational status of Cav-1 and its effects on tumor cell growth were characterized...
November 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29130228/-valuation-and-prospect-of-function-preserving-gastrectomy
#6
Shuchang Wang, Site Yu, Jia Xu, Gang Zhao
Preserving gastric function and improving quality of life (QOL) is the tendency of surgery for early gastric cancer. Function preserving gastrectomy (FPG) is applied to modify the extent of surgery and to achieve better quality of life at the premise of radical resection. Pylorus-preserving gastrectomy is the most favorable approach of FPG with oncological safety, which can improve nutritional status and QOL via preserving pylorus and vagal nerve. Proximal gastrectomy is widely accepted as FPG for early upper 1/3 gastric cancer...
October 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29128564/epigenetic-mechanisms-of-atm-activation-after-helicobacter-pylori-infection
#7
Juliana Carvalho Santos, Rafael Zuppardo Gambeloni, Aline Tengan Roque, Sebastian Oeck, Marcelo Lima Ribeiro
Gastric cancer (GC) is the second leading cause of cancer-related mortality worldwide. The disease develops from the accumulation of several genetic and epigenetic changes. Among other risk factors, Helicobacter pylori infection is considered the main driving factor of GC development. H. pylori infection increases DNA damage levels and leads to epigenetic dysregulation, which may favor gastric carcinogenesis. An early step in double strand break repair is the recruitment of (ataxia-telangiectasia mutated serine/threonine kinase (ATM) to the damaged site, where it plays a key role in advancing the DNA damage checkpoint process...
November 8, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29125233/in-vivo-imaging-xenograft-models-for-the-evaluation-of-anti-brain-tumor-efficacy-of-targeted-drugs
#8
Kenji Kita, Sachiko Arai, Akihiro Nishiyama, Hirokazu Taniguchi, Koji Fukuda, Rong Wang, Tadaaki Yamada, Shinji Takeuchi, Shoichiro Tange, Atsushi Tajima, Mitsutoshi Nakada, Kazuo Yasumoto, Yoshiharu Motoo, Takashi Murakami, Seiji Yano
Molecular-targeted drugs are generally effective against tumors containing driver oncogenes, such as EGFR, ALK, and NTRK1. However, patients harboring these oncogenes frequently experience a progression of brain metastases during treatment. Here, we present an in vivo imaging model for brain tumors using human cancer cell lines, including the EGFR-L858R/T790M-positive H1975 lung adenocarcinoma cells, the NUGC4 hepatocyte growth factor (HGF)-dependent gastric cancer cells, and the KM12SM colorectal cancer cells containing the TPM3-NTRK1 gene fusion...
November 10, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/29121520/effects-of-growth-hormone-releasing-hormone-gene-targeted-ablation-on-ghrelin-induced-feeding
#9
Lucia Recinella, Sheila Leone, Claudio Ferrante, Annalisa Chiavaroli, Rugia Shohreh, Chiara Di Nisio, Michele Vacca, Giustino Orlando, Roberto Salvatori, Luigi Brunetti
Impairment of growth hormone (GH) signaling has been associated with increased feeding and adiposity. The gastric hormone ghrelin, in addition to its GH-secretagogue effects, stimulates food intake after both central and peripheral administration. In the present study we further investigated the feeding regulatory role of the ghrelin-GH axis in a mouse model of isolated GH deficiency due to targeted ablation of the GH-releasing hormone (GHRH) gene [GHRH knockout (GHRHKO)]. We evaluated the effects of intracerebroventricular ghrelin administration on feeding behavior, related hypothalamic neuropeptides and neurotransmitters, and serum ghrelin levels in mice homozygous for GHRHKO allele (-/-) and heterozygous (+/-) control animals...
November 6, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29117552/circulating-glucagon-1-61-regulates-blood-glucose-by-increasing-insulin-secretion-and-hepatic-glucose-production
#10
Nicolai J Wewer Albrechtsen, Rune E Kuhre, Daniel Hornburg, Christian Z Jensen, Mads Hornum, Carsten Dirksen, Maria Svane, Lærke S Gasbjerg, Nils B Jørgensen, Maria N Gabe, Emilie Balk-Møller, Reidar Albrechtsen, Marie Winther-Sørensen, Katrine D Galsgaard, Felix Meissner, Tina Jorsal, Asger Lund, Tina Vilsbøll, Rasmus Eliasen, Kirstine N Bojsen-Møller, Thomas Idorn, Carolyn F Deacon, Filip K Knop, Mette M Rosenkilde, Bolette Hartmann, Bo Feldt-Rasmussen, Matthias Mann, Sten Madsbad, Jens J Holst
Glucagon is secreted from pancreatic α cells, and hypersecretion (hyperglucagonemia) contributes to diabetic hyperglycemia. Molecular heterogeneity in hyperglucagonemia is poorly investigated. By screening human plasma using high-resolution-proteomics, we identified several glucagon variants, among which proglucagon 1-61 (PG 1-61) appears to be the most abundant form. PG 1-61 is secreted in subjects with obesity, both before and after gastric bypass surgery, with protein and fat as the main drivers for secretion before surgery, but glucose after...
November 7, 2017: Cell Reports
https://www.readbyqxmd.com/read/29113813/altered-glucose-metabolism-after-bariatric-surgery-what-s-glp-1-got-to-do-with-it
#11
REVIEW
Eric P Smith, Georgina Polanco, Abid Yaqub, Marzieh Salehi
Bariatric surgery is an effective treatment for obesity. The two widely performed weight-loss procedures, Roux-en-Y gastric bypass (GB) and sleeve gastrectomy (SG), alter postprandial glucose pattern and enhance gut hormone secretion immediately after surgery before significant weight loss. This weight-loss independent glycemic effects of GB has been attributed to an accelerated nutrient transit from stomach pouch to the gut and enhanced secretion of insulinotropic gut factors; in particular, glucagon-like peptide-1 (GLP-1)...
November 4, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29107295/the-fgf21-response-to-fructose-predicts-metabolic-health-and-persists-after-bariatric-surgery-in-obese-humans
#12
Kasper W Ter Horst, Pim W Gilijamse, Ahmet Demirkiran, Bart A van Wagensveld, Mariette T Ackermans, Joanne Verheij, Johannes A Romijn, Max Nieuwdorp, Eleftheria Maratos-Flier, Mark A Herman, Mireille J Serlie
OBJECTIVE: Fructose consumption has been implicated in the development of obesity and insulin resistance. Emerging evidence shows that fibroblast growth factor 21 (FGF21) has beneficial effects on glucose, lipid, and energy metabolism and may also mediate an adaptive response to fructose ingestion. Fructose acutely stimulates circulating FGF21 consistent with a hormonal response. We aimed to evaluate whether fructose-induced FGF21 secretion is linked to metabolic outcomes in obese humans before and after bariatric surgery-induced weight loss...
November 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29101649/intestinal-incretins-and-the-regulation-of-bone-physiology
#13
Walter Ramsey, Carlos M Isales
Although originally identified as modulators of nutrient absorption, the gut hormones gastric inhibitory polypeptide (GIP), glucagon-like peptide-1 (GLP-1), and glucagon-like peptide-2 (GLP-2) have also been found to play an important role in the regulation of bone turnover. These "incretin" hormones promote bone anabolism by stimulating osteoblast differentiation as well as increasing osteoblast longevity. In addition, GIP and perhaps GLP-2 attenuate the activity of osteoclastic cells, leading to a net increase in bone deposition and ultimately increasing bone mass...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29098797/acylated-ghrelin-treatment-normalizes-skeletal-muscle-mitochondrial-oxidative-capacity-and-akt-phosphorylation-in-rat-chronic-heart-failure
#14
Rocco Barazzoni, Gianluca Gortan Cappellari, Sandra Palus, Pierandrea Vinci, Giulia Ruozi, Michela Zanetti, Annamaria Semolic, Nicole Ebner, Stephan von Heahling, Gianfranco Sinagra, Mauro Giacca, Jochen Springer
BACKGROUND: Chronic heart failure (CHF) is associated with skeletal muscle abnormalities contributing to exercise intolerance, muscle loss, and negative impact on patient prognosis. A primary role has been proposed for mitochondrial dysfunction, which may be induced by systemic and tissue inflammation and further contribute to low insulin signalling. The acylated form of the gastric hormone ghrelin (AG) may improve mitochondrial oxidative capacity and insulin signalling in both healthy and diseased rodent models...
November 3, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29098544/preserving-duodenal-jejunal-foregut-transit-does-not-impair-glucose-tolerance-and-diabetes-remission-following-gastric-bypass-in-type-2-diabetes-sprague-dawley-rat-model
#15
Ponnie R Dolo, Libin Yao, Chao Li, Xiaocheng Zhu, Linsen Shi, Jason Widjaja
BACKGROUND: Possible mechanisms underlying diabetes remission following Roux-en-Y gastric bypass (RYGB) include eradication of putative factor(s) with duodenal-jejunal bypass. OBJECTIVE: The objective of this study is to observe the effects of duodenal-jejunal transit on glucose tolerance and diabetes remission in gastric bypass rat model. METHOD: In order to verify the effect of duodenal-jejunal transit on glucose tolerance and diabetes remission in gastric bypass, 22 type 2 diabetes Sprague-Dawley rat models established through high-fat diet and low-dose streptozotocin (STZ) administered intraperitoneally were assigned to one of three groups: gastric bypass with duodenal-jejunal transit (GB-DJT n = 8), gastric bypass without duodenal-jejunal transit (RYGB n = 8), and sham (n = 6)...
November 2, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/29093684/porcine-stomach-smooth-muscle-force-depends-on-history-effects
#16
André Tomalka, Mischa Borsdorf, Markus Böl, Tobias Siebert
The stomach serves as food reservoir, mixing organ and absorption area for certain substances, while continually varying its position and size. Large dimensional changes during ingestion and gastric emptying of the stomach are associated with large changes in smooth muscle length. These length changes might induce history-effects, namely force depression (FD) following active muscle shortening and force enhancement (FE) following active muscle stretch. Both effects have impact on the force generating capacity of the stomach, and thus functional relevance...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29089975/autonomic-dysreflexia-a-cardiovascular-disorder-following-spinal-cord-injury
#17
REVIEW
Hisham Sharif, Shaoping Hou
Autonomic dysreflexia (AD) is a serious cardiovascular disorder in patients with spinal cord injury (SCI). The primary underlying cause of AD is loss of supraspinal control over sympathetic preganglionic neurons (SPNs) caudal to the injury, which renders the SPNs hyper-responsive to stimulation. Central maladaptive plasticity, including C-fiber sprouting and propriospinal fiber proliferation exaggerates noxious afferent transmission to the SPNs, causing them to release massive sympathetic discharges that result in severe hypertensive episodes...
September 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29072778/regulation-of-kisspeptin-synthesis-and-release-in-the-preoptic-anterior-hypothalamic-region-of-prepubertal-female-rats-actions-of-igf-1-and-alcohol
#18
Jill K Hiney, Vinod K Srivastava, Danielle N Vaden Anderson, Nicole L Hartzoge, William L Dees
Alcohol (ALC) causes suppressed secretion of prepubertal luteinizing hormone-releasing hormone (LHRH). Insulin-like growth factor-1 (IGF-1) and kisspeptin (Kp) are major regulators of LHRH and are critical for puberty. IGF-1 may be an upstream mediator of Kp in the preoptic area and rostral hypothalamic area (POA/RHA) of the rat brain, a region containing both Kp and LHRH neurons. We investigated the ability of IGF-1 to stimulate prepubertal Kp synthesis and release in POA/RHA, and the potential inhibitory effects of ALC METHODS: Immature female rats were administered either ALC (3g/Kg) or water via gastric gavage at 0730 h...
October 26, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29072012/-effect-of-electroacupuncture-intervention-on-gastrointestinal-motility-and-expression-of-insulin-like-growth-factor-1-and-its-receptor-proteins-in-gastric-antrum-in-diabetic-gastroparesis-rats
#19
Jian-Wen Yang, Yan Peng, Hai-Jiao Chen, Cheng-Cheng Zhang, Wei-Wei Liu, Li Liu, Mi Liu, Ya-Ping Lin
OBJECTIVE: To observe the effect of electroacupuncture (EA) intervention of "Zusanli"(ST 36), etc. on gastrointestinal motility and levels of insulin-like growth factor 1 (IGF-1) and IGF-1 receptor (IGF-1 R) proteins in the gastric antrum in diabetic gastroparesis (DGP) rats, so as to study its mechanism underlying improvement of DGP. METHODS: Fifty SD rats, half male and half female, were randomly allocated to control, model, EA acupoint, EA non-acupoint and medication (metoclopramide) groups (n=10 rats/group)...
August 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29071981/-effect-of-point-moxibustion-and-electroacupuncture-on-the-expression-of-endothelial-nitric-oxide-synthase-mrna-and-angiotensin-2-mrna-in-gastric-antrum-in-diabetic-gastroparesis-rats
#20
Li Liu, Xue-Fen Wu, Xue-Na Zheng, Xin Guo, Zeng-Hui Yue, Mi Liu, Yan Peng, Jian-Ling Yuan
OBJECTIVE: To observe the effect of point-moxibustion and electroacupuncture(EA) on gastrointestinal motility, and expression of endothelial nitric oxide synthase(eNOS) mRNA and angiotensin 2(AT Ⅱ) mRNA in gastric antrum in diabetic gastroparesis(DGP) rats, so as to reveal the different effect between point-moxibustion and EA, and explore the mechanism underlying improvement of DGP. METHODS: Forty SD rats were randomly divided into normal, model, point-moxibustion and EA groups, 10 rats in each group...
June 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
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