histamine h2 antagonists

..Positive associations were observed for any hip and vertebral fracture. The effect size was modest; however, the significance lies in the widespread prescribing of acid suppressants...

..The use of PPIs in older women, and perhaps older men with low calcium intake, may be associated with a modestly increased risk of nonspine fracture...

..In all cases, the changes in risk estimates were small and the clinical significance was limited...

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..Gastric acid suppressing drugs (that is, histamine(2) receptor antagonists and proton pump inhibitors) could affect the risk of oesophageal or gastric adenocarcinoma but few studies are available...

..0% and that of control group was 85.7% (P=n.s.)). These results clearly indicate that cimetidine treatment dramatically improved survival in colorectal cancer patients with tumour cells expressing high levels of sL(x) and sL(a)...

..It is assumed that lafutidine interacts with CSN at yet unidentified sites other than TRPV1...

..LIM2412, another colonic cancer cell line, was significantly stimulated by both cimetidine and ranitidine in vivo. Ranitidine had no effect on in vitro cell proliferation...

..The luminal H+ itself is not a ligand for the RT-sensitive site of VR1 but plays a modulator role in the CSN-mediated physiological responses...

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..Proton pump inhibitors (PPIs) may interfere with calcium absorption through induction of hypochlorhydria but they also may reduce bone resorption through inhibition of osteoclastic vacuolar proton pumps...

..These observations suggest that lafutidine might reduce WIR-induced gastric mucosal injury not only by inhibiting acid secretion but also by inhibiting neutrophil activation through enhancement of sensory neuron activation...

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..In conclusion, both the histamine H1 and H2 receptors in the epidermis are involved in skin barrier function and the cutaneous condition of epidermal hyperplasia...

..CONCLUSIONS: Our survey has identified a number of areas of controversy and confusion related to the management of GERD. We hope that our findings can assist in the development of educational materials on GERD for PCPs...

..Previous human studies have not assessed its gastroprotective effects. The purpose of the present study was to determine the effects of lafutidine on the human gastric mucus layer using both histological and biochemical methods...

..Furthermore, our data suggested that especially gastric pH increasing medication could increase the risk for nosocomial pneumonia. Routine prophylaxis for stress-related bleeding even in high-risk patients seems not to be justified...

..Since then, several studies have appeared which suggest an anticancer activity for cimetidine, although few attempts have been made to corroborate their findings in large, placebo-controlled, double-blind studies...

..This action might be attributable at least partly to the enhancement of colonic mucus secretion...

..Cimetidine at a dose of 400 mg or 800 mg twice a day does not have a significant influence on the survival of patients with gastric cancer compared to placebo...

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..The clinical relevance of nosocomial pneumonia due to gastric bacterial overgrowth has decreased during the past decade due to several changes in the management of critically ill patients...

..CONCLUSIONS: Intravenous proton-pump inhibitors are suitable, possibly superior, alternatives to intravenous H(2)-receptor antagonists in treatment of upper GI bleeding...

..We concluded that lafutidine increases plasma concentrations of CGRP and somatostatin in humans, which may result in inhibition of postprandial acid secretion and gastroprotective activity...

..In an attempt to compensate for the lower efficacy, H2-receptor antagonists are now increasingly being used at a higher dose...

..We evaluate the literature to better define thrombocytopenia related to H(2) antagonist administration and discuss mechanism, potential as a risk factor and case reports describing the severity and duration of thrombocytopenia...

..In this study of CIV IL-2 and antihistamines, this combination appears to be active in metastatic kidney cancer. There appears to be no negative effect of antihistamine on the CIV IL-2 response rate in this disease...

..To report a case of vitamin B(12) deficiency associated with long-term use (approximately 4 1/2 y) of histamine(2) (H(2))-receptor antagonists and a proton-pump inhibitor (PPI) in a patient with gastroesophageal reflux...

..To evaluate the role of combination therapy with proton-pump inhibitors (PPIs) and histamine(2) receptor antagonists in gastroesophageal reflux disease (GERD)...

..The aim of our study was to evaluate the effects of proton pump inhibitors alone or in combination with H2 receptor blockers on gastric acidity with 24-hour gastric pH monitoring...

..Gastrin level was highest in patients administered famotidine and lowest among those administered cimetidine. The pattern of gastrin change in patients administered ranitidine was intermediate between famotidine and cimetidine...

..Preoperative oral lafutidine may be an alternative to ranitidine as a prophylaxis against aspiration pneumonia...

..The released CGRP and SP by ranitidine and nizatidine administration may produce a gastroprotective effect, increase mucosal blood flow, and inhibit acid secretion in the gastrointestinal tract...

..The results obtained were analyzed statistically and compared with those obtained by the official methods...

..Finally, we include our personal experience in prevalence and management of Hp found in endoscopies...

..No standard methods exist for determining the onset of action of gastric antisecretory agents in human subjects...

..These findings suggested that upon exposure to an antagonist (inverse agonist), the equilibrium between receptor endocytosis and recycling is altered before H2R upregulation, probably via suppressing H2R degradation...

..Twice daily administration of a suspension of omeprazole, was the only regimen tested that approached the potential therapeutic efficacy for acid-related disease when assessed by criteria used for human patients...

..An assessment was made of the change and the effect of a histamine H(2)-receptor blocker (H(2)-blocker) or omeprazole on gastric pH after surgery...

..These results suggest that rOat3 is the most likely candidate transporter involved in regulating the CSF concentration of H(2)-receptor antagonists at the CP...

..The intra-gastric candidal infection was not related to intra-gastric pH or anti-secretory medication in this study...

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..There are few data on empiric, stepped therapy for heartburn relief or subsequent relapse in primary care...

..8 and 14% acetonitrile. The recovery, selectivity, linearity, precision and accuracy of the method were evaluated from spiked human plasma. The method has been implemented to monitor ranitidine levels in clinical samples...

..The present study suggests that a proton pump inhibitor may be effective for prophylaxis of acid aspiration pneumonia in patients showing the full tolerance to H2 antagonists...

..A small number of GERD patients resistant to PPI therapy may be due to nocturnal acid breakthrough (NAB) or rapid metabolism of PPI (extensive metabolizer for CYP2C19)...

..This is the first report documenting nasal pain resolved with acid suppressive therapy in a child with EERD. The incidence and pathogenesis of EERD induced nasal symptoms in children merits further investigation...

..CONCLUSION: The incidence of stricture is low and remains unchanged, despite the increased prevalence of reflux disease. Most patients have a good prognosis, only half needing further forcible dilatation, mainly within the first 2 years...

..Although there is evidence that treatment for GORD does improve symptoms and HR-QOL outcomes, further research is needed to more completely understand the value of medical therapy for GORD...

..These results suggest that elevation of intrasperm Ca(2+) by H(2)-receptor antagonists plays a key role in influencing sperm viability...

..The results obtained show that it is necessary to determine the indications to operations in patients with ulcerous stenosis after complex conservative therapy and the reassessment of the degree of evacuatory disorders...

..Meta-analyses evaluated several aspects of Helicobacter pylori eradication based on the randomised controlled trials...

..Because of H2RA tolerance, there is no difference in acid suppression between PPI twice daily and PPI twice daily + H2RA after 1 week of combination therapy...

..The few previous studies evaluating this association have been null but have been limited by small sample sizes, and none have evaluated risk by either histologic type or estrogen receptor/progesterone receptor status...

..The present findings suggest that the full dose of cimetidine is capable of inhibiting tubular transport of creatinine and thus may improve the accuracy of creatinine clearance measurements for the study of renal function...

..These data suggest that cimetidine acts directly on endothelial cells to inhibit high-glucose-induced expression of adhesion molecules and neutrophil adhesion mediated by increasing endothelial NO production, but not by inhibiting PKC...

..The assay was successfully applied to a human volunteer study using ranitidine as the model compound...

..Studies with larger numbers of participants were less likely to demonstrate this effect. Relative to accepted, legal definitions of intoxication, the effect of any H2RA on blood alcohol level is unlikely to be clinically relevant...

..After two decades of use, PPIs have proved to be very effective and safe drugs...

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..As a result, the availability of captopril was affected by the concurrent administration of H2-receptor antagonists. Accordingly coadministration of both the drugs should be avoided...

..56 x 10(-10) g/mL for CIMT, 8.69 x 10(-10) g/mL for RANT hydrochloride and 2.35 x 10(-9) g/mL for FAMT (S:N = 3). This method has been successfully implemented for the analysis of H(2)-receptor antagonists in pharmaceuticals...

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..The acquisition of information on OCT/Oct mediated-transport and/or inhibition such as that presented in this report is very useful for further understanding of certain aspects of uptake, distribution, and excretion for drug candidates...

..Combined therapy for nonresponders is described. Algorithm for stopping the medication is recommended. These recommendations may provide an efficient and economical approach to the management of this problem...

..In this study, we provide evidence that histamine signaling through the histamine H(2) but not the H(1) receptor is important for controlling Y. enterocolitica infection within the Peyer's patches and mesenteric lymph nodes of mice...

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..3-102.6+/-0.57-1.90%) without interference from the common excipients. The results obtained by the proposed method were comparable with those obtained by the official methods...

..This study was done to evaluate the efficacy of rabeprazole (proton-pump-inhibitor) and ranitidine (H(2)-receptor antagonist) in the symptom relief and treatment of erosive esophagitis diagnosed by endoscopy...

..CONCLUSION: Proton pump inhibitor treatment provides more consistent heartburn relief than an H2-receptor antagonist, or "step-up" or "step-down" therapy...

..The level of the MDA was determined from the plasma and compared to the 1 mg of the blood protein. None of administered H2 blockers changed the malondialdehyde level in serum of the experimental rats...

..On the other hand, increase in metformin concentration may result in hypoglycemic effects...

..043). The inhibitory effect of ranitidine, 75 mg, on intragastric acidity can be detected from 0-15 hr after an oral dose. Cimetidine 200 mg has little inhibitory effect beyond 10 hr...

..To test the hypothesis that GA suppression could be associated with an increased risk of acute gastroenteritis and pneumonia in children treated with GA inhibitors, we conducted a multicenter, prospective study...

..The new class of drug, the reversible proton pump blocker (e.g., BY841) approaches this requirement...

..pylori infections or as monotherapy in the treatment and prophylaxis of GORD with or without oesophagitis or NSAID-induced gastrointestinal damage...

..Histamine might also play an important role in compound 48/80-induced scratching behavior...

..Lansoprazole has emerged as a useful and well tolerated treatment option in the management of acid-related disorders...

..Additional studies are clearly needed to address the unresolved treatment issues in GERD...

..Since the last Canadian Consensus Conference in 1996, GERD management has evolved substantially...

The isolated perfused rat kidney model was used to examine the effect of the histamine H2 antagonists cimetidine, ranitidine, and famotidine and the organic anion inhibitor probenecid on the differential renal handling of triamterene and ..

..In comparison with famotidine and cimetidine, nizatidine may be different from other histamine H2-receptor antagonists and has unique properties other than its gastric antisecretory activity...

b>Histamine H2 antagonists (e.g., ranitidine) are generally thought to specifically reduce gastric acid secretion and are commonly used for stress ulcer prophylaxis in critically ill patients because of their efficacy and safety profile...

..This study aims to compare use and costs of anti-secretory and cardiovascular co-medication in osteoarthritis patients treated with selective or non-selective NSAIDs...

..These results suggested that histamine H1 receptors play an important role in nasal allergy symptoms induced by histamine...

..There are no clear data to support either treatment strategy as a universal approach to all patients; consequently, physicians must always choose the course best suited to the individual patient...

..In conclusion, nefopam analgesic activity is not mediated by histamine H1 or H2 receptors, but can be slightly modulated by histamine H3 receptors in mouse pain tests...

..It is suggested that the ganglion effect may be due to the action of these agents on the acetylcholine receptor-ion channel complex in the postsynaptic membrane...

..In addition to its efficacy in healing or maintenance treatment, it may provide more effective symptom relief than other comparator agents...

..One focus of CCS analyses will be the relation of the widely used drug classes, statins, histamine H2 antagonists, and selective serotonin uptake inhibitors, to risk of common cancers...

..The results of these studies will be invaluable to the development and testing of strategies to reduce the risk of AD and related conditions, and to reduce the burden of cognitive decline in the growing population of older persons. ..

..Results of the study may provide unique insights on the pathogenesis of this complex disease and lead to innovative strategies for prostate cancer prevention. ..

..These exposures will receive emphasis in the incidence phase of the study as a likely preface to randomized primary prevention trials. ..

..Understanding the means of survival and cytotoxicity of this pathogen will enable more rational treatment of peptic ulcer disease. ..

..A better understanding of effects of acid inhibition on H. pylori may allow improvement or replacement of triple therapy for eradication. ..

..Hence this approach will provide additional insights into mechanisms of regulation of gastric secretion and enable illuminated interpretation of the pathophysiology of peptic ulcer disease. ..

..The results of the proposed research will further improve the agents used for the treatment of acid-related diseases and also our knowledge of the ATPase and cellular events involved in regulation of its activity. ..

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..These data will allow a novel understanding of the peripheral regulation of gastric acid secretion as well as the exocytotic process in a non- excitable endocrine cell. ..

..A better understanding of effects of acid inhibition on H. pylori may allow improvement or replacement of triple therapy for eradication. ..

..These experiments will help to discover the mechanism of action of this novel class of agents, and lead to the development of new pharmacotherapies for pain. ..

..This proposal will uncover new biochemical mechanisms for pain relief, and test a new group of chemicals for pain-relieving properties. This research could lead to the development of new, non-addicting pain relievers. ..

..These collaborative experiments between pharmacologists, neurophysiologists and chemists will discover the mechanism of action of this novel class of agents and lead to the development of new, non-opioid pharmacotherapies for pain. ..

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..These studies will enhance our knowledge of antinociceptive mechanisms, and may lead to the development of novel, clinically useful agents for the relief of pain...

..These studies will clarify the mechanisms by which MOR relieves pain, enhance the understanding of histaminergic antinociceptive mechanisms, and may lead to the discovery of non-addicting, novel medications for the treatment of pain. ..

..We present preliminary data on microarray and RT-PCRanalyses on 5 patients with BE that suggest an overactive Wnt pathway: we have also assembled the essential components of a successful study using microarrays. ..

..Subsequently, in a case-control study, all newly diagnosed BE and randomly selected controls will be examined for the volume and activity of visceral obesity (CT scan and serum adipocytokines). ..

..Subsequently, in a case-control study, all newly diagnosed BE and randomly selected controls will be examined for the volume and activity of visceral obesity (CT scan and serum adipocytokines). ..

..Evaluating the extent and patterns of HCC surveillance is crucial in understanding diffusion (and obstacles) of this practice and in designing interventions to improve the implementation of HCC surveillance. ..

..Future directions: We anticipate that participants' responses could guide the design of specific counseling and educational interventions to overcome a patients' reluctance to accept dementia screening. ..

..These studies will examine new roles for prostaglandins and their relationship with other vasoactive mediators during development. ..

..These questions are especially relevant given our nation's current obesity epidemic. ..

..Future directions: We anticipate that participants' responses could guide the design of specific counseling and educational interventions to overcome a patients' reluctance to accept dementia screening. ..

..The proposed study explores how hormones associated with body fat may change the way the body heals after an injury, and increase the risk of cells developing precancerous changes. ..

..These studies will examine new roles for prostaglandins and their relationship with other vasoactive mediators during development. ..

..M. Michael Wolfe, well-established investigators in health-services research. At the completion on the project, the candidate will have gained the experience to become an independent researcher in clinical epidemiology. ..

..The study will provide data that clinicians need to prescribe these widely used medications in a way that minimizes the risk of sudden cardiac death. ..

..A major advantage of the proposed individualized intervention is reducing exposure to potentially harmful medications and using low dose of haloperidol during the critical early days of ICU care. ..

..These projects are tightly linked to our theme/sub-theme and have the potential to materially improve clinical practice in highly vulnerable populations that often are under-represented in other research programs. ..

..The results of these experiments will enhance the understanding of maternal-fetal PG signaling, and are likely to provide new insights into premature or dysfunctional labor in women. ..

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