keyword
MENU ▼
Read by QxMD icon Read
search

H pylori

keyword
https://www.readbyqxmd.com/read/27914073/competition-for-iron-between-host-and-pathogen-a-structural-case-study-on-helicobacter-pylori
#1
Wei Xia
Helicobacter pylori (H. pylori) is a highly successful bacterial pathogen, which colonizes the stomach of more than half of the world's population. To colonize and survive in such an acidic and inhospitable niche, H. pylori cells have evolved complex mechanisms to acquire nutrients from human hosts, including iron, an essential nutrient for both the pathogens and host cells. However, human cells also utilize diverse strategies in withholding of irons to prevent the bacterial outgrowth. The competition for iron is the central battlefield between pathogen and host...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27913793/inflammatory-signaling-pathways-induced-by-helicobacter-pylori-in-primary-human-gastric-epithelial-cells
#2
Cong Tri Tran, Magali Garcia, Martine Garnier, Christophe Burucoa, Charles Bodet
Inflammatory signaling pathways induced by Helicobacter pylori remain unclear, having been studied mostly on cell-line models derived from gastric adenocarcinoma with potentially altered signaling pathways and nonfunctional receptors. Here, H. pylori-induced signaling pathways were investigated in primary human gastric epithelial cells. Inflammatory response was analyzed on chemokine mRNA expression and production after infection of gastric epithelial cells by H. pylori strains, B128 and B128ΔcagM, a cag type IV secretion system defective strain...
December 1, 2016: Innate Immunity
https://www.readbyqxmd.com/read/27906990/surveillance-of-helicobacter-pylori-antibiotic-susceptibility-in-indonesia-different-resistance-types-among-regions-and-with-novel-genetic-mutations
#3
Muhammad Miftahussurur, Ari Fahrial Syam, Iswan Abbas Nusi, Dadang Makmun, Langgeng Agung Waskito, Lukman Hakim Zein, Fardah Akil, Willy Brodus Uwan, David Simanjuntak, I Dewa Nyoman Wibawa, Jimmy Bradley Waleleng, Alexander Michael Joseph Saudale, Fauzi Yusuf, Syifa Mustika, Pangestu Adi, Ummi Maimunah, Hasan Maulahela, Yudith Annisa Ayu Rezkitha, Phawinee Subsomwong, Nasronudin, Dadik Rahardjo, Rumiko Suzuki, Junko Akada, Yoshio Yamaoka
Information regarding Helicobacter pylori antibiotic resistance in Indonesia was previously inadequate. We assessed antibiotic susceptibility for H. pylori in Indonesia, and determined the association between virulence genes or genetic mutations and antibiotic resistance. We recruited 849 dyspeptic patients who underwent endoscopy in 11 cities in Indonesia. E-test was used to determine the minimum inhibitory concentration of five antibiotics. PCR-based sequencing assessed mutations in 23S rRNA, rdxA, gyrA, gyrB, and virulence genes...
2016: PloS One
https://www.readbyqxmd.com/read/27898166/neither-10-nor-14-day-sequential-treatment-is-better-than-standard-triple-therapy-for-helicobacter-pylori-eradication
#4
Emanuel Warrington, Orlando López-Román, Rafael Tirado Montijo, Rafael Urbina, Marcia Cruz-Correa, Doris H Toro
OBJECTIVE: Helicobacter pylori is a bacterial pathogen associated with chronic gastritis, peptic ulcer disease, gastric adenocarcinoma, and gastric mucosa associated lymphoid tissue lymphoma. Current treatment guidelines support a 7- to 14-day, triple-drug protocol consisting of a proton-pump inhibitor (PPI), clarithromycin, and either amoxicillin or an imidazole. The initial eradication rates for this regimen were 80 to 90%. Nevertheless its effectiveness has declined as the antibiotic resistance to clarithromycin and metronidazole has emerged...
December 2016: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/27895975/anti-helicobacter-pylori-effect-of-cag-nana-a-new-sialic-acid-derivative
#5
Yun-Hee Rhee, Hyun-Jeong Ku, Hye-Ji Noh, Hyang-Hyun Cho, Hee-Kyong Kim, Jin-Chul Ahn
AIM: To investigate the bactericidal effects of calcium chelated N-acetylneuraminic acid-glycomacropeptide (CaG-NANA) against Helicobacter pylori (H. pylori). METHODS: For manufacture of CaG-NANA, calcium (Ca) was combined with glycomacropeptide (GMP) by chelating, and N-acetylneuraminic acid (NANA) was produced with Ca-GMP substrate by an enzymatic method. The final concentration of each component was 5% Ca, 7% NANA, 85% GMP, and 3% water. For in vitro study, various concentrations of CaG-NANA were investigated under the minimal inhibitory concentration (MIC)...
November 15, 2016: World Journal of Gastrointestinal Pathophysiology
https://www.readbyqxmd.com/read/27895737/high-parp-1-expression-is-associated-with-tumor-invasion-and-poor-prognosis-in-gastric-cancer
#6
Ying Liu, Yu Zhang, Ying Zhao, Dongna Gao, Jing Xing, Hui Liu
Poly (adenosine diphosphate-ribose) polymerase 1 (PARP-1) was previously demonstrated to be overexpressed in numerous malignant tumors and associated with invasiveness and poor prognosis. However, the expression of the PARP-1 protein in gastric cancer and its association with clinical outcomes requires further investigation. In the present study, the expression of PARP-1 in 564 gastric cancer tissues and 335 tumor-adjacent control tissues is investigated, using tissue microarray-based immunohistochemistry. PARP-1 expression levels were demonstrated to be significantly higher in gastric cancer tissue samples, as compared with control tissue samples...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27895408/molecular-detection-of-helicobacter-pylori-antibiotic-resistance-in-stool-vs-biopsy-samples
#7
Denise E Brennan, Joseph Omorogbe, Mary Hussey, Donal Tighe, Grainne Holleran, Colm O'Morain, Sinéad M Smith, Deirdre McNamara
AIM: To compare (1) demographics in urea breath test (UBT) vs endoscopy patients; and (2) the molecular detection of antibiotic resistance in stool vs biopsy samples. METHODS: Six hundred and sixteen adult patients undergoing endoscopy or a UBT were prospectively recruited to the study. The GenoType HelicoDR assay was used to detect Helicobacter pylori (H. pylori) and antibiotic resistance using biopsy and/or stool samples from CLO-positive endoscopy patients and stool samples from UBT-positive patients...
November 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27895391/characteristics-of-gastric-cancer-detected-within-1-year-after-successful-eradication-of-helicobacter-pylori
#8
Toshihiro Nishizawa, Hidekazu Suzuki, Toru Arano, Shuntaro Yoshida, Hiroharu Yamashita, Keisuke Hata, Takanori Kanai, Naohisa Yahagi, Osamu Toyoshima
Gastric cancers are sometimes diagnosed in patients who have successfully undergone Helicobacter pylori (H. pylori) eradication. We analyzed the clinicopathological features of gastric cancers detected after eradication to clarify their characteristics. We reviewed 31 patients with 34 cases of gastric cancer detected after successful H. pylori eradication. Clinicopathological characteristics analyzed included interval since eradication, interval since last endoscopy, tumor size, and depth of invasion. Patients were classified into two groups: early detection (<1 year since eradication) and delayed detection (≥1 year since eradication)...
November 2016: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/27893207/prevalence-and-risk-factors-for-helicobacter-pylori-infection-among-healthy-inhabitants-in-northern-jakarta-indonesia
#9
Yasuyuki Goto, Ari Fahrial Syam, Nikko Darnindro, Florentina Carolin Puspita Hapsari
Background: The prevalence of Helicobacter pylori (H. pylori) infection in Indonesia has been reported to be exceedingly low. The purpose of our study was to confirm whether this is the case in Northern Jakarta using a sensitive 13C-urea breath test (UBT), and to examine any associations with lifestyle/environment factors and potential routes of transmission. Methods: We recruited a total of 196 subjects from a low-income community in Northern Jakarta, Indonesia, data from 193 who completed a questionnaire about their lifestyle/environment and had UBT being included as the final...
January 10, 2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27892538/helicobacter-pylori-is-associated-with-dyslipidemia-but-not-with-other-risk-factors-of-cardiovascular-disease
#10
Tae Jun Kim, Hyuk Lee, Mira Kang, Jee Eun Kim, Yoon-Ho Choi, Yang Won Min, Byung-Hoon Min, Jun Haeng Lee, Hee Jung Son, Poong-Lyul Rhee, Sun-Young Baek, Soo Hyun Ahn, Jae J Kim
Epidemiologic and clinical data suggest that Helicobacter pylori infection is a contributing factor in the progression of atherosclerosis. However, the specific cardiovascular disease risk factors associated with H. pylori remain unclear. We performed a cross-sectional study of 37,263 consecutive healthy subjects who underwent a routine health check-up. In multivariable log Poisson regression models adjusted for potential confounders, the associations of H. pylori seropositivity with higher LDL-C (relative risk [RR], 1...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27892443/medication-adherence-pattern-and-factors-affecting-adherence-in-helicobacter-pylori-eradication-therapy
#11
S Shakya Shrestha, M Bhandari, S R Thapa, R Shrestha, R Poudyal, B Purbey, R B Gurung
Background Helicobacter pylori (H. pylori) infection is the most common chronic bacterial infection worldwide affecting approximately half of the world's population. A number of screening tests as well as complex multi-drug therapies are available for the detection and treatment of H. pylori infection. However, the optimum eradication rates of H. pylori infection can only be achieved if adherence to drug therapy is higher. Therefore, it is of utmost importance to determine the factors leading to poor adherence to obtain successful treatment outcomes...
January 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/27891343/expression-of-alpha-methylacyl-coa-racemase-amacr-in-gastric-adenocarcinoma-and-its-correlation-with-helicobacter-pylori-infection
#12
Yamini Jindal, Anshul Singh, Ravikant Kumar, Kachnar Varma, Vatsala Misra, Sri Prakash Misra, Manisha Dwivedi
INTRODUCTION: Gastric cancer develops in a multistep progression and is determined by genetic and environmental factors. Over-expression of Alpha Methylacyl CoA Racemase (AMACR) is useful in diagnosis of prostate cancer. There is plenty of genetic alteration that occurs in gastric adenocarcinoma. The present study was planned to determine if AMACR can be used as a diagnostic marker in gastric adenocarcinoma similar to prostate cancer. AIM: To study the expression of AMACR in gastric adenocarcinoma and correlate its expression with density of Helicobacter pylori...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891114/comparative-analysis-of-two-helicobacter-pylori-strains-using-genomics-and-mass-spectrometry-based-proteomics
#13
Roger Karlsson, Kaisa Thorell, Shaghayegh Hosseini, Diarmuid Kenny, Carina Sihlbom, Åsa Sjöling, Anders Karlsson, Intawat Nookaew
Helicobacter pylori, a gastroenteric pathogen believed to have co-evolved with humans over 100,000 years, shows significant genetic variability. This motivates the study of different H. pylori strains and the diseases they cause in order to identify determinants for disease evolution. In this study, we used proteomics tools to compare two H. pylori strains. Nic25_A was isolated in Nicaragua from a patient with intestinal metaplasia, and P12 was isolated in Europe from a patient with duodenal ulcers. Differences in the abundance of surface proteins between the two strains were determined with two mass spectrometry-based methods, label-free quantification (MaxQuant) or the use of tandem mass tags (TMT)...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27891051/analysis-of-helicobacter-pylori-prevalence-in-chittagong-bangladesh-based-on-pcr-and-clo-test
#14
Abdul Musaweer Habib, Md Jibran Alam, Bashudev Rudra, Md Abdul Quader, Mohammad Al-Forkan
The pathogenic bacterium Helicobacter pylori is a causative agent of gastric diseases in Bangladesh as well as throughout the world. This study aimed at analyzing the prevalence of H. pylori infection among dyspeptic patients in Chittagong, the second most populous city of Bangladesh, using 16S rRNA-based H. pylori-specific Polymerase Chain Reaction and Campylobacter-like organism test. We found that 67% of the population under study was positive for H. pylori infection. Gastric ulcer and duodenal ulcer disease showed statistically significant association with H...
2016: Microbiology Insights
https://www.readbyqxmd.com/read/27889168/biofilm-formation-enhances-helicobacter-pylori-survivability-in-vegetables
#15
Chow Goon Ng, Mun Fai Loke, Khean Lee Goh, Jamuna Vadivelu, Bow Ho
To date, the exact route and mode of transmission of Helicobacter pylori remains elusive. The detection of H. pylori in food using molecular approaches has led us to postulate that the gastric pathogen may survive in the extragastric environment for an extended period. In this study, we show that H. pylori prolongs its survival by forming biofilm and micro-colonies on vegetables. The biofilm forming capability of H. pylori is both strain and vegetable dependent. H. pylori strains were classified into high and low biofilm formers based on their highest relative biofilm units (BU)...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27888863/helicobacter-pylori-related-diseases
#16
Javier P Gisbert
This article describes the main conclusions drawn from the presentations on Helicobacter pylori infection in Digestive Diseases Week, 2016. Despite the undeniable widespread reduction in the prevalence of this infection, infection rates continue to be high in developing countries. The prevalence of clarithromycin, metronidazole and quinolone resistance is markedly high in most countries and continues to rise. The management of H. pylori infection in patients with peptic ulcers still leaves much to be desired...
September 2016: Gastroenterología y Hepatología
https://www.readbyqxmd.com/read/27888458/helicobacter-pylori-outer-membrane-protein-homc-shows-geographic-dependent-polymorphism-that-is-influenced-by-the-bab-family
#17
Aeryun Kim, Stephanie L Servetas, Jieun Kang, Jinmoon Kim, Sungil Jang, Yun Hui Choi, Hanfu Su, Yeong-Eui Jeon, Youngmin A Hong, Yun-Jung Yoo, D Scott Merrell, Jeong-Heon Cha
The array of outer membrane proteins (OMPs) found in Helicobacter pylori provides a crucial component for persistent colonization within the gastric niche. Not only does H. pylori harbor a wide number of OMPs, but these OMPs often vary across strains; this likely contributes to immune evasion, adaptation during long term colonization, and potentially differential disease progression. Previous work from our group described OMP differences among the Bab family (babA, babB, and babC) and Hom family (homA and homB) from 80 American H...
December 2016: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/27886029/prevalence-of-h-pylori-in-gastric-biopsy-specimen-in-the-southeastern-region-of-turkey
#18
Fulya Bayındır Bilman, Mehmet Özdemir, Birol Baysal, Muhammed Güzel Kurtoğlu
INTRODUCTION: Helicobacter pylori is a Gram-negative, microaerophilic bacterium that colonizes human gastric mucosa. Gastric ulcer, duodenal ulcer, chronic atrophic gastritis, mucosa-associated lymphoid tissue lymphoma, and stomach adenocarcinoma are associated with H. pylori as the etiological agent. Cytotoxin-associated gene A (cagA), which is one of the most important virulence factors of H. pylori, encodes a 120-145 kDa protein. The prevalence of cagA genes shows differences in H...
November 24, 2016: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/27885227/the-experience-of-dissolving-polypharmacy-by-reducing-the-prescription-of-anti-ulcer-drugs-in-residents-of-a-special-geriatric-nursing-home
#19
Kosuke Okada, Yumiko Yamaguch, Nanao Kamada, Masahiro Okada, Shigeko Katoh, Hidemi Sasaki
AIM: As part of a broader study on polypharmacy among elderly nursing home residents, we examined the impact of reducing or discontinuing the prescription of proton pump inhibitors and other anti-ulcer drugs. METHODS: We employed a strategy of reducing and discontinuing the prescription of drugs to 160 elderly residents of the Hiroshima Atomic Bomb survivors nursing home, Kandayama Yasuragien. The residents had entered the home between April 2012 and November 2015...
2016: Nihon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
https://www.readbyqxmd.com/read/27884380/association-of-endothelial-dysfunction-and-cytotoxin-associated-gene-a-positive-helicobacter-pylori-in-patients-with-cardiac-syndrome-x
#20
COMMENT
Yousef Rasmi, Hadi Rouhrazi, Ebrahim Khayati-Shal, Alireza Shirpoor, Ehsan Saboory
BACKGROUND: Existence of coronary endothelial dysfunction has been demonstrated in patients with cardiac syndrome X (CSX). In addition, Helicobacter pylorus (H. pylori) has been associated with CSX. We aimed to assess the possible association of endothelial dysfunction and cytotoxin-associated gene A-positive H. pylori (CagA+) infection in CSX patients. METHODS: Fifty-six patients with CSX (23 male/33 female; age: 51.25 ± 8.86 years) who were anti-H. pylori IgG-positive [H...
October 2016: Biomedical Journal
keyword
keyword
47116
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"