keyword
MENU ▼
Read by QxMD icon Read
search

Gastric acid

keyword
https://www.readbyqxmd.com/read/28454330/high-bim-mrna-levels-are-associated-with-longer-survival-in-advanced-gastric-cancer
#1
Nandie Wu, Ying Huang, Zhengyun Zou, Ana Gimenez-Capitan, Lixia Yu, Wenjing Hu, Lijing Zhu, Xia Sun, Jose Javier Sanchez, Wenxian Guan, Baorui Liu, Rafael Rosell, Jia Wei
Chemotherapy drugs, including 5-fluorouracil (5-FU), oxaliplatin and docetaxel, are commonly used in the treatment of gastric cancer (GC). Apoptosis-relevant genes may be associated with drug resistance. In the present study, the messenger RNA (mRNA) expression levels of B-cell lymphoma 2 interacting mediator of cell death (BIM), astrocyte elevated gene-1 (AEG-1) and AXL receptor tyrosine kinase (AXL) were investigated in 131 advanced GC samples, and the expression levels of these genes were correlated with patients' overall survival (OS)...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28445279/promoter-hypermethylation-of-mgmt-gene-may-contribute-to-the-pathogenesis-of-gastric-cancer-a-prisma-compliant-meta-analysis
#2
Zongxin Zhang, Shaojun Xin, Min Gao, Yunxiang Cai
BECKGROUND: The association of MGMT (O-methyguanine deoxyribonucleic acid methyltransferase) promoter hypermethylation with gastric cancer (GC) risk has been studied extensively, but the results remained unclear. Here, we performed a meta-analysis to evaluate whether promoter hypermethylation of the MGMT gene contributed to gastric pathogenesis. METHODS: Relevant studies were identified by retrieving the PubMed, Web of Science, Embase, and China National Knowledge Infrastructure (CNKI) databases...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28443084/gene-expression-profiling-of-transcription-factors-of-helicobacter-pylori-under-different-environmental-conditions
#3
Miguel A De la Cruz, Miguel A Ares, Kristine von Bargen, Leonardo G Panunzi, Jessica Martínez-Cruz, Hilda A Valdez-Salazar, César Jiménez-Galicia, Javier Torres
Helicobacter pylori is a Gram-negative bacterium that colonizes the human gastric mucosa and causes peptic ulcers and gastric carcinoma. H. pylori strain 26695 has a small genome (1.67 Mb), which codes for few known transcriptional regulators that control bacterial metabolism and virulence. We analyzed by qRT-PCR the expression of 16 transcriptional regulators in H. pylori 26695, including the three sigma factors under different environmental conditions. When bacteria were exposed to acidic pH, urea, nickel, or iron, the sigma factors were differentially expressed with a particularly strong induction of fliA...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28442261/identification-of-a-novel-fluoropyrrole-derivative-as-a-potassium-competitive-acid-blocker-with-long-duration-of-action
#4
Haruyuki Nishida, Yasuyoshi Arikawa, Keizo Hirase, Toshihiro Imaeda, Nobuhiro Inatomi, Yasunobu Hori, Jun Matsukawa, Yasushi Fujioka, Teruki Hamada, Motoo Iida, Mitsuyoshi Nishitani, Akio Imanishi, Hideo Fukui, Fumio Itoh, Masahiro Kajino
With the aim to find a novel long-lasting potassium-competitive acid blocker (P-CAB) that would perfectly overcome the limitations of proton pump inhibitors (PPIs), we tried various approaches based on pyrrole derivative 1b as a lead compound. As part of a comprehensive approach to identification of a new drug, we explored excellent compounds that have low lipophilicity by introducing a polar hetero-aromatic group at position 5 of the pyrrole ring. Among the compounds synthesized, fluoropyrrole derivative 37c, which has a 2-F-3-Py group at the fifth position, lower pKa, and much lower ClogP and logD values than 1b dose, showed potent gastric-acid suppressive action resulting from gastric H(+),K(+)-ATPase inhibition in animal models...
April 13, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28440689/self-assembled-hemoglobin-nanoparticles-for-improved-oral-photosensitizer-delivery-and-oral-photothermal-therapy-in-vivo
#5
Kaikai Wang, Gang Chen, Qi Hu, Yuqian Zhen, Huipeng Li, Jiao Chen, Bin Di, Yiqiao Hu, Minjie Sun, David Oupický
AIM: The aim of the present study was to use hemoglobin (Hb) nanoparticles (NPs) to improve oral bioavailability of a near-infrared dye IR780 for in vivo antitumor application in photothermal therapy. METHODS: One-step acid-denaturing method was used to encapsulate IR780 into self-assembled Hb NPs (IR780@Hb NPs). Pharmacokinetics, biodistribution and antitumor effect were studied in vivo. RESULTS: The Hb NPs showed high stability in enzymatic and acidic conditions similar to the gastric environment, and enhanced absorption of IR780 into the blood...
April 25, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28440551/alternating-ph-landscapes-shape-epithelial-cancer-initiation-and-progression-focus-on-pancreatic-cancer
#6
REVIEW
Stine F Pedersen, Ivana Novak, Frauke Alves, Albrecht Schwab, Luis A Pardo
We present here the hypothesis that the unique microenvironmental pH landscape of acid-base transporting epithelia is an important factor in development of epithelial cancers, by rendering the epithelial and stromal cells pre-adapted to the heterogeneous extracellular pH (pHe ) in the tumor microenvironment. Cells residing in organs with net acid-base transporting epithelia such as the pancreatic ductal and gastric epithelia are exposed to very different, temporally highly variable pHe values apically and basolaterally...
April 25, 2017: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/28440522/-nutrition-management-in-obese-patients-with-type-2-diabetes-mellitus-after-laparoscopic-sleeve-gastrectomy
#7
Weihong Tang, Yuhua Chen, Meizhen Pan, Lihua Chen, Lele Zhang, Tingfeng Wang, Xiong Zhang, Peng Zhang, Chengzhu Zheng, Bo Yu
OBJECTIVE: To explore the value of nutrition management in obese patients with type 2 diabetes mellitus(T2DM) after laparoscopic sleeve gastrectomy(LSG). METHODS: Clinical data of 22 obese T2DM patients undergoing LSG from March 2013 to July 2015 in Fudan University Pudong Medical Center were collected. All the patients strictly followed the specialized instruction by nutritionists: diabetic and low calorie diet 3347.2 to 5020.8 kJ (800 to 1200 kcal) per day before the operation; low calorie liquid diet 2510...
April 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28440477/synchronized-dual-pulse-gastric-electrical-stimulation-improves-gastric-emptying-and-activates-enteric-glial-cells-via-upregulation-of-gfap-and-s100b-with-different-courses-of-subdiaphragmatic-vagotomy-in-rats
#8
Nian Wang, Shuangning Song, Jie Chen
Previous research and clinical practice have indicated that damage to the vagal nerve may seriously affect gastrointestinal physiological movement behavior. The aim of the current study was to observe the change of gastric motility, as well as enteric glial cells (EGCs) in the stomach with different courses of vagal nerve transection in rats prior to and following synchronized dual pulse gastric electrical stimulation. The gastric emptying rates were measured to assess the gastric motility. The glial markers, containing calcium binding protein (S100B) and glial fibrillary acidic protein (GFAP), were detected by reverse transcription‑quantitative polymerase chain reaction and double‑labeling immunofluorescence analysis...
April 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28439300/genetic-variants-of-helicobacter-pylori-type-iv-secretion-system-components-cagl-and-cagi-and-their-association-with-clinical-outcomes
#9
Hirofumi Ogawa, Akira Iwamoto, Toshihito Tanahashi, Rina Okada, Koji Yamamoto, Shin Nishiumi, Masaru Yoshida, Takeshi Azuma
BACKGROUND: Helicobacter pylori infection is associated with risk for chronic gastritis (CG), gastric ulcer (GU), duodenal ulcer (DU), and gastric cancer (GC). The H. pylori Cag type IV secretion system (TFSS) translocates the virulence factor cytotoxin-associated gene A protein into host cells and plays an important role in initiating gastric carcinogenesis. The CagL and CagI proteins are components of the TFSS. The Arg-Gly-Asp (RGD) motif of CagL, and the six most distal C-terminal amino acids (Ser-Lys-Ile-Ile-Val-Lys, and Ser-Lys-Val-Ile-Val-Lys) of CagL and CagI are essential for TFSS adhesion to host cells...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/28438092/characterization-by-lectin-histochemistry-of-two-subpopulations-of-parietal-cells-in-the-rat-gastric-glands
#10
Laura Gómez-Santos, Edurne Alonso, Lucio Díaz-Flores, Juan F Madrid, Francisco J Sáez
Parietal cells undergo a differentiation process while they move from the isthmus toward the pits and the base region of the gastric gland. The aim of this work was to analyze the rat gastric glands by lectin histochemistry to show the glycans expressed by upper (young) and lower (old) parietal cells. We used lectins recognizing the most frequent sugar moieties in mammals. Each lectin was assayed alone and in combination with several deglycosylation pretreatments: (1) β-elimination, which removes O-linked oligosaccharides; (2) incubation with Peptide-N-glycosidase F, to remove N-linked glycans; (3) acid hydrolysis, which removes terminal sialic acid moieties; (4) methylation-saponification, to remove sulfate groups from sugar residues; and (5) glucose oxidase, a technique carried out with the lectin concanavalin A to convert glucose into gluconic acid...
May 2017: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/28437585/chronic-intestinal-electrical-stimulation-improves-glucose-intolerance-and-insulin-resistance-in-diet-induced-obesity-rats
#11
Shiying Li, Weijian Zhu, Sujuan Zhang, Jiande Dz Chen
OBJECTIVE: Obesity is a contributing factor to insulin resistance and type 2 diabetes. The aim of this study was to study the therapeutic potential of intestinal electrical stimulation (IES) for obesity and associated glucose intolerance and insulin resistance in diet-induced obesity (DIO) rats. METHODS: DIO rats were divided into two groups to receive sham or IES for 8 weeks. Oral glucose tolerance and insulin tolerance tests were performed. Gastric emptying and small bowel transit tests were performed...
April 24, 2017: Obesity
https://www.readbyqxmd.com/read/28436598/the-expression-of-helicobacter-pylori-tfs-plasticity-zone-cluster-is-regulated-by-ph-and-adherence-and-its-composition-is-associated-with-differential-gastric-il-8-secretion
#12
Bruno Silva, Alexandra Nunes, Filipa F Vale, Raquel Rocha, João Paulo Gomes, Ricardo Dias, Mónica Oleastro
BACKGROUND: Helicobacter pylori virulence is associated with different clinical outcomes. The existence of an intact dupA gene from tfs4b cluster has been suggested as a predictor for duodenal ulcer development. However, the role of tfs plasticity zone clusters in the development of ulcers remains unclear. We studied several H. pylori strains to characterize the gene arrangement of tfs3 and tfs4 clusters and their impact in the inflammatory response by infected gastric cells. METHODS: The genome of 14 H...
April 24, 2017: Helicobacter
https://www.readbyqxmd.com/read/28435261/ph-sensitive-au-bsa-dox-fa-nanocomposites-for-combined-ct-imaging-and-targeted-drug-delivery
#13
He Huang, Da-Peng Yang, Minghuan Liu, Xiangsheng Wang, Zhiyong Zhang, Guangdong Zhou, Wei Liu, Yilin Cao, Wen Jie Zhang, Xiansong Wang
Albumin-based nanoparticles (NPs) as a drug delivery system have attracted much attention owing to their nontoxicity, non-immunogenicity, great stability and ability to bind to many therapeutic drugs. Herein, bovine serum albumin (BSA) was utilized as a template to prepare Au-BSA core/shell NPs. The outer layer BSA was subsequently conjugated with cis-aconityl doxorubicin (DOX) and folic acid (FA) to create Au-BSA-DOX-FA nanocomposites. A list of characterizations was undertaken to identify the successful conjugation of drug molecules and targeted agents...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28434196/role-of-gut-microbiota-bile-acids-and-their-crosstalk-in-the-effects-of-bariatric-surgery-on-obesity-and-type-2-diabetes
#14
Haijun Liu, Cheng Hu, Xueli Zhang, Weiping Jia
Type 2 diabetes mellitus is becoming increasingly prevalent worldwide and has become one of the greatest threats to global health. Bariatric surgery was initially designed to achieve weight loss and subsequently was noted to induce improvements or remission of type 2 diabetes. Currently, these bariatric operations such as Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) are the most effective procedures for the treatment of obesity and type 2 diabetes mellitus worldwide. However, the specific mechanism mediating the beneficial effects of metabolic surgery has remained largely unknown...
April 23, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28434172/lactobacillus-paracasei-strain-06tca19-suppresses-inflammatory-chemokine-induced-by-helicobacter-pylori-in-human-gastric-epithelial-cells
#15
Shiro Takeda, Keiji Igoshi, Chuluunbat Tsend-Ayush, Tsendesuren Oyunsuren, Ryoichi Sakata, Yasuhiro Koga, Yuo Arima, Masahiko Takeshita
Helicobacter (H.) pylori infection is an important risk factor for gastric cancer that causes gastric inflammation. Inflammatory chemokines such as interleukin (IL)-8 and regulated on activation normal T cell expressed and secreted (RANTES) are elevated in the gastric mucosa by H. pylori. This study aimed to investigate the effects of Lactobacillus paracasei strain 06TCa19, a probiotic strain, on IL-8 and RANTES expression and production induced by H. pylori using human gastric epithelial cell lines. Strain 06TCa19 was shown to suppress H...
April 22, 2017: Human Cell
https://www.readbyqxmd.com/read/28433795/helicobacter-pylori-cagl-amino-acid-polymorphism-d58e59-pave-the-way-toward-peptic-ulcer-disease-while-n58e59-is-associated-with-gastric-cancer-in-north-of-iran
#16
Mina Rezaee Cherati, Javad Shokri-Shirvani, Ahmad Karkhah, Ramzan Rajabnia, Hamid Reza Nouri
The cagL protein of Helicobacter pylori involving in pathogenesis of gastroduodenal disorders. Therefore, the current study was conducted to determine the cagL amino acid polymorphisms in patients with gastric diseases. One hundred gastric biopsies were collected from gastritis, peptic ulcer (PUD) and gastric cancer (GC) patients and were screened for cagL using polymerase chain reaction (PCR). Also, sequence variations of the cagL were assessed via sequence translation. The cagL geneopositivity was 71.6% in patients were infected with H...
April 20, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28432224/a-bacterial-cause-of-cancer-an-historical-essay
#17
Marshall A Lichtman
This article reviews the history of the discovery of microbes that increase the risk of cancer of some tissues with a special emphasis on the bacterium Helicobacter pylori and the role played by two Australian physicians, neither schooled in research, who had open minds about the shibboleth that mycobacteria (acid-fast organisms) can survive the acid environment of the stomach, but that other pathogenic bacteria cannot. They discovered one of the most important human pathogens, Helicobacter pylori, and showed it capable of inducing severe gastric inflammatory disease...
April 21, 2017: Oncologist
https://www.readbyqxmd.com/read/28430608/adrenalectomy-abolishes-hypergravity-induced-gastric-acid-hyposecretion
#18
Kiyong Na, Hyun-Soo Kim
Jet fighter pilots experience high gravitational acceleration forces in the cephalocaudal direction (+Gz), causing severe stress. Stress affects different physiological functions of the gastrointestinal tract. Although the effects of exposure to hypergravity on cardiovascular and cerebral functions have been the subject of numerous studies, crucial information regarding potential pathophysiological alterations following hypergravity exposure in the gastrointestinal tract is lacking. We recently documented a significant decrease in gastric secretory activity in rats after acute exposure to hypergravity...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429247/a-review-of-the-novel-application-and-potential-adverse-effects-of-proton-pump-inhibitors
#19
REVIEW
Li-Yuan Yu, Lu-Ning Sun, Xue-Hui Zhang, Yue-Qi Li, Lei Yu, Zi-Qing-Yun Yuan, Ling Meng, Hong-Wen Zhang, Yong-Qing Wang
Proton pump inhibitors (PPIs) are known as a class of pharmaceutical agents that target H(+)/K(+)-ATPase, which is located in gastric parietal cells. PPIs are widely used in the treatment of gastric acid-related diseases including peptic ulcer disease, erosive esophagitis and gastroesophageal reflux disease, and so on. These drugs present an excellent safety profile and have become one of the most commonly prescribed drugs in primary and specialty care. Except for gastric acid-related diseases, PPIs can also be used in the treatment of Helicobacter pylori infection, viral infections, respiratory system diseases, cancer and so on...
April 20, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28428706/gastroesophageal-reflux-disease-and-morbid-obesity-to-sleeve-or-not-to-sleeve
#20
EDITORIAL
Fabrizio Rebecchi, Marco E Allaix, Marco G Patti, Francisco Schlottmann, Mario Morino
Laparoscopic sleeve gastrectomy (LSG) has reached wide popularity during the last 15 years, due to the limited morbidity and mortality rates, and the very good weight loss results and effects on comorbid conditions. However, there are concerns regarding the effects of LSG on gastroesophageal reflux disease (GERD). The interpretation of the current evidence is challenged by the fact that the LSG technique is not standardized, and most studies investigate the presence of GERD by assessing symptoms and the use of acid reducing medications only...
April 7, 2017: World Journal of Gastroenterology: WJG
keyword
keyword
98181
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"