keyword
MENU ▼
Read by QxMD icon Read
search

Gastric mucosal protection

keyword
https://www.readbyqxmd.com/read/27930268/recombinant-bacillus-subtilis-spores-expressing-cholera-toxin-b-subunit-and-helicobacter-pylori-urease-b-confers-protection-against-h-pylori-in-mice
#1
Zhenwen Zhou, Hui Dong, Shuwen Yao, Yanmei Huang, Bingshao Liang, Yongqiang Xie, Yan Long, Jialiang Mai, Sitang Gong
Helicobacter pylori infection is associated with chronic gastritis, peptic ulcers, gastric cancer and mucosa-associated lymphoid tissue lymphoma. The limitations of current therapies for Helicobacter pylori infection include poor compliance and antibiotic resistance. Therefore, an effective anti-H. pylori vaccine would be an alternative or complement to antibiotic treatment. Urease B (UreB) is considered an ideal vaccine antigen against H. pylori infection. In this study, cholera toxin B subunit (CTB), a mucosal adjuvant, was used to enhance the immunogenicity of novel Bacillus subtilis spores vaccine that express CTB-UreB along with the B...
December 8, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27895392/determination-of-the-adequate-dosage-of-rebamipide-a-gastric-mucoprotective-drug-to-prevent-low-dose-aspirin-induced-gastrointestinal-mucosal-injury
#2
Kazuhiro Ota, Toshihisa Takeuchi, Sadaharu Nouda, Haruhiko Ozaki, Shinpei Kawaguchi, Yoshiaki Takahashi, Satoshi Harada, Shoko Edogawa, Yuichi Kojima, Takanori Kuramoto, Kazuhide Higuchi
Small intestinal mucosal injury caused by low-dose aspirin is a common cause of obscure gastrointestinal bleeding. We aimed to investigate the protective effects and optimal dose of rebamipide for low-dose aspirin-induced gastrointestinal mucosal injury. In this prospective randomized trial, 45 healthy volunteers (aged 20-65 years) were included and divided into three groups. The groups received enteric-coated aspirin 100 mg (low-dose aspirin) plus omeprazole 10 mg (Group A: proton pump inhibitor group), low-dose aspirin plus rebamipide 300 mg (Group B: standard-dose group), or low-dose aspirin plus rebamipide 900 mg (Group C: high-dose group)...
November 2016: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/27873354/gastroprotective-effect-of-esculin-on-ethanol-induced-gastric-lesion-in-mice
#3
Weifeng Li, Yu Wang, Xiumei Wang, Hailin Zhang, Zehong He, Wenbing Zhi, Fang Liu, Xiaofeng Niu
The gastroprotective effect of esculin was investigated in a mouse model of ethanol-induced gastric lesion. Administration of esculin at doses of 5, 10, and 20 mg/kg body weight prior to ethanol ingestion led to significant gastroprotection compared to untreated mice. Gastric mucosal lesions were evaluated by macroscopic and histopathological alterations, lesion index, and myeloperoxidase (MPO) activity. Pretreatment with esculin significantly reduced macroscopic and histopathological damage, gastric lesion index, and MPO activity in a dose-dependent manner...
November 22, 2016: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/27864656/nitric-oxide-and-hydrogen-sulfide-interact-when-modulating-gastric-physiological-functions-in-rodents
#4
Larisse Tavares Lucetti, Renan Oliveira Silva, Ana Paula Macedo Santana, Bruno de Melo Tavares, Mariana Lima Vale, Pedro Marcos Gomes Soares, Francisco José Batista de Lima Júnior, Pedro Jorge Caldas Magalhães, Fernando de Queiroz Cunha, Ronaldo de Albuquerque Ribeiro, Jand-Venes Rolim Medeiros, Marcellus Henrique Loiola Ponte Souza
AIM: The objective was to evaluate the effects of nitric oxide (NO) and hydrogen sulfide (H2S) donors and possible interactions between these two systems in modulating gastric function. METHODS: Mice received saline, sodium nitroprusside (SNP), or sodium hydrosulfite (NaHS), and after 1 h, the animals were killed for immunofluorescence analysis of CSE or eNOS expressions, respectively. Other groups received saline, SNP, NaHS, Lawesson's reagent (H2S donor), PAG + SNP, L-NAME, L-NAME + NaHS, or L-NAME + Lawesson's reagent...
November 18, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/27859804/gastric-mucosal-cracked-and-cobblestone-like-changes-by-the-use-of-proton-pump-inhibitors
#5
Shuichi Miyamoto, Mototsugu Kato, Momoko Tsuda, Kana Matsuda, Tetsuhito Muranaka, Satoshi Abiko, Masayoshi Ono, Takeshi Mizushima, Saori Omori, Keiko Yamamoto, Katsuhiro Mabe, Shoko Ono, Takahiko Kudo, Yuichi Shimizu, Naoya Sakamoto
OBJECTIVES: Use of proton pump inhibitors (PPIs) is histologically associated with oxyntic gland dilatations. Two interesting mucosal changes are often detected endoscopically in patients who use PPIs: gastric cracked mucosa (GCM) and gastric cobblestone-like mucosa (GCSM). The aim of this study was to clarify the relationship between PPI use and these mucosal changes. METHODS: This was a single-center observational study. All successive subjects who underwent a routine esophagogastroduodenoscopy (EGD) between August and November 2014 in Hokkaido University Hospital were enrolled...
November 17, 2016: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/27825819/interaction-between-endogenous-carbon-monoxide-and-hydrogen-sulfide-in-the-mechanism-of-gastroprotection-against-acute-aspirin-induced-gastric-damage
#6
Marcin Magierowski, Katarzyna Magierowska, Magdalena Hubalewska-Mazgaj, Juliusz Adamski, Dominik Bakalarz, Zbigniew Sliwowski, Robert Pajdo, Slawomir Kwiecien, Tomasz Brzozowski
Acetylsalicylic acid (ASA) is mainly recognized as painkiller or anti-inflammatory drug. However, ASA causes serious side effects towards gastrointestinal (GI) tract which limits its usefulness. Carbon monoxide (CO) and hydrogen sulfide (H2S) have been described to act as important endogenous messengers and mediators of gastroprotection but whether they can interact in gastroprotection against acute ASA-induced gastric damage remains unknown. In this study male Wistar rats were pretreated with 1) vehicle (saline, i...
November 5, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27825384/inhibiting-the-proton-pump-mechanisms-benefits-harms-and-questions
#7
Jeffrey K Aronson
Inhibition of the H(+)/K(+)-adenosine triphosphatase (the proton pump) is the final common mechanistic pathway in reducing gastric acid secretion pharmacologically. Proton pump inhibitors are widely used in upper gastrointestinal diseases, including gastric and duodenal ulcers, eradication of Helicobacter pylori in combination with antibiotics, gastroesophageal reflux disease, Zollinger-Ellison syndrome, eosinophilic esophagitis, and prevention of non-steroidal anti-inflammatory drug-induced peptic ulceration...
November 9, 2016: BMC Medicine
https://www.readbyqxmd.com/read/27816726/astragaloside-iv-protects-rat-gastric-mucosa-against-aspirin-induced-damage
#8
Dan-Dan Fan, Shan Lin, Yan-Ping Song, Ze-Yu Wang, Bo Liu, Sai-Nan Gao, Yu-Hua Fan, Shan Zhu, Sen Li, Lei Jiang
Aspirin (Asp) is commonly used as an anti-inflammatory drug, but the long-term usage of Asp can lead to severe gastrointestinal damage. Thus the co-administering of Asp with another drug that can suppress its side effect while having no impact on its anti-inflammatory activity would be ideal. Astragaloside IV (AST-IV) is a natural anti-inflammatory compound that has been shown to protect rat gastric mucosa from anhydrous ethanol-inflicted damage. In this study, we investigated whether AST-IV could protect rat gastric mucosa against Asp-induced gastric mucosal damage...
November 2, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27814791/lipoic-acid-protects-gastric-mucosa-from-ethanol-induced-injury-in-rat-through-a-mechanism-involving-aldehyde-dehydrogenase-2-activation
#9
Jia-Hui Li, Gui-Xia Ju, Jun-Lin Jiang, Nian-Sheng Li, Jun Peng, Xiu-Ju Luo
Numerous studies demonstrate that reactive aldehydes are highly toxic and aldehyde dehydrogenase 2 (ALDH2)-mediated detoxification of reactive aldehydes is thought as an endogenous protective mechanism against reactive aldehydes-induced cell injury. This study aims to explore whether lipoic acid, a potential ALDH2 activator, is able to protect gastric mucosa from ethanol-induced injury through a mechanism involving clearance of reactive aldehydes. The rats received 60% of acidified ethanol through intragastric administration and held for 1 h to establish a mucosal injury model...
November 2016: Alcohol
https://www.readbyqxmd.com/read/27814789/novokinin-inhibits-gastric-acid-secretion-and-protects-against-alcohol-induced-gastric-injury-in-rats
#10
Yang Zhang, Minghui Xiu, Jinhong Jiang, Jianzheng He, Dongqin Li, Shiwei Liang, Qiang Chen
Novokinin (Arg-Pro-Leu-Lys-Pro-Trp), a potent vasorelaxing and hypotensive peptide modified from ovokinin, exhibits highly selective affinity for the AT2 receptor. However, its role in gastrointestinal functions is still not fully understood. In this study, we found that novokinin inhibited basal gastric acid secretion and protected gastric mucosa from alcohol-induced injury in a dose-related manner in rats after intracerebroventricular (i.c.v.) administration. Novokinin significantly decreased basal gastric acid output at the dose of 50 and 100 nmol/rat...
November 2016: Alcohol
https://www.readbyqxmd.com/read/27813628/quercetin-attenuates-indomethacin-induced-acute-gastric-ulcer-in-rats
#11
Abdullah Glil Rada Alkushi, Naser Ahmed Mahmoud Elsawy
BACKGROUND: Peptic ulcer diseases are common and are induced by many factors, including stress, smoking, and ingestion of non-steroidal anti-inflammatory drugs. Quercetin is considered to be an anti-oxidant with healing effects on many experimental toxic injuries. MATERIALS AND METHODS: The present study aimed to explore the possible effect of quercetin on acute gastric ulcer induced by indomethacin in rats. Three groups received indomethacin (30mg/kg body weight) orally by orogastric gavage on two consecutive days...
November 4, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27780710/the-effects-of-baicalein-on-gastric-mucosal-ulcerations-in-mice-protective-pathways-and-anti-secretory-mechanisms
#12
Ana Roseli S Ribeiro, José Diego do Nascimento Valença, Jeferson da Silva Santos, Thaise Boeing, Luisa Mota da Silva, Sérgio Faloni de Andrade, Ricardo L C Albuquerque-Júnior, Sara Maria Thomazzi
Many flavonoids have been shown to present good results for the treatment of gastric ulcers. Baicalein, a bioactive flavonoid derived from the Scutellaria baicalensis Georgi root, possesses several biological effects, such as anti-inflammatory and antioxidant. This study was conducted to assess the gastroprotective properties of baicalein. Anti-ulcerogenic assay was performed using the protocol of ulcer induced by ethanol/HCl in mice; then, the role of presynaptic α2-receptors, sulfhydryl (SH) compounds, nitric oxide (NO), prostaglandin (PG) and ATP-sensitive K(+) (KATP) channels in gastroprotection of baicalein was investigated...
October 22, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27739140/complementarity-of-in-vitro-and-in-vivo-models-for-the-evaluation-of-gastro-protective-effects-of-pharmacological-substances
#13
Sonia Goineau, Vincent Castagné
Gastric mucosa is frequently exposed to various gastric irritants and there is a continuing requirement to develop new gastro-protective agents. The present study compares the effects of three such agents, sucralfate, rebamipide and cimetidine in both in vivo and in vitro indomethacin-induced gastric damage models. For the in vivo approach, rats were orally administered sucralfate, rebamipide and cimetidine at 300 mg/kg before an acute dose of indomethacin (30 mg/kg). Gastric lesions were then macroscopically examined...
October 14, 2016: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/27717330/role-of-vitamin-d3-combined-to-alginates-in-preventing-acid-and-oxidative-injury-in-cultured-gastric-epithelial-cells
#14
Francesca Uberti, Claudio Bardelli, Vera Morsanuto, Sabrina Ghirlanda, Claudio Molinari
BACKGROUND: Gastric diseases are a worldwide problem in modern society, as reported in the USA, in the range of 0.5-2 episodes/year/person and an incidence of 5-100 episodes/1000/week according to seasons and age. There is convincing evidence that oxidative stress is involved in the pathogenesis of acute gastric injury. Acid secreted from gastric parietal cells determines mucosal injuries which in turn cause inflammation and oxidative stress. Consequent inflammation produces free radicals by mitochondria thus causing lipid peroxidation, oxidative and acidic stress, which can lead to cell apoptosis...
October 7, 2016: BMC Gastroenterology
https://www.readbyqxmd.com/read/27713029/colon-targeted-oral-drug-delivery-system-based-on-alginate-chitosan-microspheres-loaded-with-icariin-in-the-treatment-of-ulcerative-colitis
#15
Qiang-Song Wang, Gui-Fang Wang, Jie Zhou, Li-Na Gao, Yuan-Lu Cui
In recent years, oral colon specific drug delivery system has been paid more attention in the treatment of inflammatory bowel disease (IBD). As the special pH condition in gastrointestinal tract, the challenge for treatment of IBD was that the colon drug delivery system should endure the low pH in stomach and release drugs quickly in high pH in colon. Icariin with the poor solubility and low bioavailability limited the treatment of many diseases in clinic. In this study, the protective mechanism of alginate-chitosan microspheres loaded with icariin were investigated with trinitrobenzene sulfonic acid (TNBS)/ethanol induced colonic mucosal injury in rats...
October 3, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27704617/netazepide-a-gastrin-cck2-receptor-antagonist-can-eradicate-gastric-neuroendocrine-tumours-in-patients-with-autoimmune-chronic-atrophic-gastritis
#16
Malcolm Boyce, Andrew R Moore, Liv Sagatun, Bryony N Parsons, Andrea Varro, Fiona Campbell, Reidar Fossmark, Helge L Waldum, David M Pritchard
AIMS: Netazepide, a gastrin/CCK2 receptor antagonist, once daily for 12 weeks reduced the number of tumours and size of the largest one in 16 patients with autoimmune chronic atrophic gastritis (CAG), achlorhydria, hypergastrinaemia and multiple gastric neuroendocrine tumours (type 1 gastric NETs), and normalised circulating chromogranin A (CgA) produced by enterochromaffin-like cells, the source of the tumours. The aim was to assess whether longer-term netazepide treatment can eradicate type 1 gastric NETs...
October 4, 2016: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27693316/selective-scavenging-of-intra-mitochondrial-superoxide-corrects-diclofenac-induced-mitochondrial-dysfunction-and-gastric-injury-a-novel-gastroprotective-mechanism-independent-of-gastric-acid-suppression
#17
Somnath Mazumder, Rudranil De, Souvik Sarkar, Asim Azhar Siddiqui, Shubhra Jyoti Saha, Chinmoy Banerjee, Mohd Shameel Iqbal, Shiladitya Nag, Subhashis Debsharma, Uday Bandyopadhyay
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used to treat multiple inflammatory diseases and pain but severe gastric mucosal damage is the worst outcome of NSAID-therapy. Here we report that mitoTEMPO, a mitochondrially targeted superoxide (O2(-)) scavenger protected as well as healed gastric injury induced by diclofenac (DCF), the most commonly used NSAID. Common existing therapy against gastric injury involves suppression of gastric acid secretion by proton pump inhibitors and histamine H2 receptor antagonists; however, dyspepsia, vitamin B12 deficiency and gastric microfloral dysbalance are the major drawbacks of acid suppression...
September 28, 2016: Biochemical Pharmacology
https://www.readbyqxmd.com/read/27676456/induction-of-mucosal-immune-responses-against-helicobacter-pylori-infection-after-sublingual-and-intragastric-route-of-immunization
#18
Louise Sjökvist Ottsjö, Frida Jeverstam, Linda Yrlid, Alexander U Wenzel, Anna K Walduck, Sukanya Raghavan
There is a current lack of effective mucosal vaccines against major gastroenteric pathogens and particularly against Helicobacter pylori, a chronic infection that can lead to peptic ulcers and gastric cancer in a sub-population of infected individuals. Mucosal CD4(+) T cell responses have been shown to be essential for vaccine-induced protection against H. pylori infection. The current study addresses the influence of the adjuvant and site of mucosal immunization on early CD4(+) T cell priming to H. pylori antigens...
September 27, 2016: Immunology
https://www.readbyqxmd.com/read/27649624/dioscin-attenuates-gastric-ischemia-reperfusion-injury-through-the-down-regulation-of-pkc-erk1-2-signaling-via-pkc%C3%AE-and-pkc%C3%AE-2-inhibition
#19
Yupeng Hu, Xufeng Tao, Xu Han, Lina Xu, Lianhong Yin, Yan Qi, Yanyan Zhao, Youwei Xu, Changyuan Wang, Jinyong Peng
BACKGROUND: We previously reported the promising effects of dioscin against cerebral and renal ischemia-reperfusion (I/R) injury. However, its role against gastric I/R injury has not yet been reported. Thus, the aim of the present work was to investigate the protective effect and possible mechanisms of dioscin against gastric I/R. MATERIALS AND METHODS: The hypoxia-reoxygenation (H/R) model in GES-1 cells and the celiac artery occlusion model in rats were carried out in the study...
October 25, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27635116/protective-effect-of-amphipterygium-adstringens-extract-on-dextran-sulphate-sodium-induced-ulcerative-colitis-in-mice
#20
Mario Rodriguez-Canales, Ruben Jimenez-Rivas, Maria Margarita Canales-Martinez, Ana Judith Garcia-Lopez, Nelly Rivera-Yañez, Oscar Nieto-Yañez, Yadira Ledesma-Soto, Luvia Enid Sanchez-Torres, Miriam Rodriguez-Sosa, Luis Ignacio Terrazas, Marco Aurelio Rodriguez-Monroy
Amphipterygium adstringens is an endemic species in Mexico commonly known as "cuachalalate." Healers to treat gastritis, gastric ulcers, and gastrointestinal cancer have traditionally used the bark. We investigated the effects of alcoholic extract of A. adstringens (AaEE) in DSS-induced colitis in mice. The protective effect of AaEE was determined at 200 mg/kg by oral gavage for 10 days. We determine the effect of AaEE on clinical features (disease activity index), antioxidants, anti-inflammatory, and immunomodulatory activities in relation to the activity of SOD, CAT, and GPx, levels of proinflammatory cytokines, and changes both macroscopic and microscopic of the colonic mucosa...
2016: Mediators of Inflammation
keyword
keyword
939
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"