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https://www.readbyqxmd.com/read/28531095/synthesis-of-1-2-3-triazolo-4-5-h-quinolone-derivatives-with-novel-anti-microbial-properties-against-metronidazole-resistant-helicobacter-pylori
#1
Mohammad Abu-Sini, Amal Mayyas, Nehaya Al-Karablieh, Rula Darwish, Yusuf Al-Hiari, Talal Aburjai, Shereen Arabiyat, Luay Abu-Qatouseh
Helicobacter pylori infection can lead to gastritis, peptic ulcer, and the development of mucosa associated lymphoid tissue (MALT) lymphoma. Treatment and eradication of H. pylori infection can prevent relapse and accelerate the healing of gastric and duodenal ulcers as well as regression of malignancy. Due to the increasing emergence of antibiotic resistance among clinical isolates of H. pylori, alternative approaches using newly discovered antimicrobial agents in combination with the standard antibiotic regimens for the treatment of H...
May 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28529929/novel-and-effective-therapeutic-regimens-for-helicobacter-pylori-in-an-era-of-increasing-antibiotic-resistance
#2
REVIEW
Yi Hu, Yin Zhu, Nong-Hua Lu
Helicobacter pylori (H. pylori) is a common gastrointestinal bacterial strain closely associated with the incidence of chronic gastritis, peptic ulcers, gastric mucosa-associated lymphoid tissue lymphoma, and gastric cancer. A current research and clinical challenge is the increased rate of antibiotic resistance in H. pylori, which has led to a decreased H. pylori eradication rate. In this article, we review recent H. pylori infection and reinfection rates and H. pylori resistance to antibiotics, and we discuss the pertinent treatments...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28523650/ubiquitin-specific-peptidase-5-mediates-histidine-rich-protein-hpn-induced-cell-apoptosis-in-hepatocellular-carcinoma-through-p14-p53-signaling
#3
Yi Liu, Wei-Mao Wang, Li-Yi Zou, Li Li, Lu Feng, Ming-Zhu Pan, Min-Yi Lv, Ying Cao, Hua Wang, Hsiang-Fu Kung, Jian-Xin Pang, Wei-Ming Fu, Jin-Fang Zhang
Hpn is a small histidine-rich cytoplasmic protein from Helicobacter pylori and has been recognized as a high-risk factor for several cancers including gastric cancer, colorectal cancer, and MALT lymphoma. However, the relationship between Hpn and cancers remains elusive. In this study, we discovered that Hpn protein effectively suppressed cell growth and induced apoptosis in hepatocellular carcinoma (HCC). A two-dimensional gel electrophoresis and mass spectrometry-based comparative proteomics was performed to find the molecular targets of Hpn in HCC cells...
May 18, 2017: Proteomics
https://www.readbyqxmd.com/read/28522905/strategies-used-by-helicobacter-pylori-to-establish-persistent-infection
#4
REVIEW
Amin Talebi Bezmin Abadi
Helicobacter pylori (H. pylori) is a Gram-negative and motile bacterium that colonizes the hostile microniche of the human stomach, then persists for the host's entire life, if not effectively treated. Clinically, H. pylori plays a causative role in the development of a wide spectrum of diseases including chronic active gastritis, peptic ulceration, gastric adenocarcinoma, and gastric mucosa-associated lymphoid tissue lymphoma. Due to the global distribution of H. pylori, it is no exaggeration to conclude that smart strategies are contributing to adaptation of the bacterium to its permanent host...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28512564/infections-and-follicular-lymphoma-is-there-a-link
#5
REVIEW
Francesco Zallio, Giulia Limberti, Marco Ladetto
Several infectious agents appear to provide a proliferative signal -- "antigen-drive" - that could be implicated in the pathogenesis of various type of Non-Hodgkin Lymphoma (NHL). A classical model of the infection-driven lymphoproliferative disorder is Helicobacter pylori-induced gastric MALT lymphoma, where antibiotic therapy allows the eradication of both the infectious agent and the clonal B-cell expansion. Following the footsteps of this example, several retrospective studies have found a correlation with other pathogens and B-cell Lymphomas, adding new relevant information about pathogenesis and laying the groundwork for chemotherapy-free treatments...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28507812/a-barf1-specific-mab-as-a-new-immunotherapeutic-tool-for-the-management-of-ebv-related-tumors
#6
Riccardo Turrini, Anna Merlo, Debora Martorelli, Damiana Antonia Faè, Roberta Sommaggio, Isabella Monia Montagner, Vito Barbieri, Oriano Marin, Paola Zanovello, Riccardo Dolcetti, Antonio Rosato
The use of monoclonal antibodies (mAb) for the diagnosis and treatment of malignancies is acquiring an increasing clinical importance, thanks to their specificity, efficacy and relative easiness of use. However, in the context of Epstein-Barr virus (EBV)-related malignancies, only cancers of B-cell origin can benefit from therapeutic mAb targeting specific B-cell lineage antigens. To overcome this limitation, we generated a new mAb specific for BARF1, an EBV-encoded protein with transforming and immune-modulating properties...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28504205/comparison-of-clinicopathologic-characteristics-of-gastric-follicular-lymphomas-and-duodenal-follicular-lymphomas
#7
Akiko Miyagi Maeshima, Hirokazu Taniguchi, Tomotaka Suzuki, Sayako Yuda, Kosuke Toyoda, Nobuhiko Yamauchi, Shinichi Makita, Suguru Fukuhara, Wataru Munakata, Dai Maruyama, Yukio Kobayashi, Yutaka Saito, Kensei Tobinai
We compared the incidence, esophagogastroduodenoscopy (EGD) findings, and histopathologic characteristics of gastric and duodenal follicular lymphomas (FL). Of 626 FL cases, primary gastric FL and secondary gastric involvement of FL were observed in 1% and 5% of the cases, respectively, which were lower incidences than duodenal FL (10% and 9%, respectively). Gastric FL usually appeared as submucosal tumors (primary, 71%: secondary, 79%), whereas duodenal FL as granular lesions (primary, 92%: secondary, 87%)...
May 10, 2017: Human Pathology
https://www.readbyqxmd.com/read/28502334/ap-1-expression-and-its-clinical-relevance-in-immune-disorders-and-cancer
#8
REVIEW
Shivtia Trop-Steinberg, Yehudit Azar
The inflammatory response is known to have a significant role in certain autoimmune diseases and malignancies. We review current knowledge regarding the functions of activator protein 1 (AP-1) as an important modulator in several immune disorders and carcinomas. AP-1 is overexpressed in rheumatoid arthritis and in long-term allogeneic hematopoietic stem cell transplantation survivors; however, decreased expression of AP-1 has been observed in psoriasis, systematic lupus erythematosus and in patients who do not survive after hematopoietic stem cell transplantation...
May 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28496965/malt-lymphoma-of-minor-salivary-glands-in-a-sj%C3%A3-gren-s-syndrome-patient-a-case-report-and-review-of-literature
#9
Savvas Titsinides, Nikolaos Nikitakis, Evangelia Piperi, Alexandra Sklavounou
BACKGROUND: Sjögren's syndrome is a chronic systemic disease, characterized by lymphocytic infiltration and destruction mainly of the salivary and lacrimal glands, resulting in xerostomia and xeropthalmia. Sjögren's syndrome patients have a 44-fold excess risk for the development of non-Hodgkin's lymphoma particularly mucosa-associated lymphoid tissue (MALT) lymphoma, prevalently affecting the major salivary glands. In this report, a rare case of MALT lymphoma of minor salivary glands in a patient with Sjögren's syndrome is described...
January 2017: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/28489582/association-between-the-ercc2-asp312asn-polymorphism-and-risk-of-cancer
#10
REVIEW
Feifan Xiao, Jian Pu, Qiongxian Wen, Qin Huang, Qinle Zhang, Birong Huang, Shanshan Huang, Aihua Lan, Yuening Zhang, Jiatong Li, Dong Zhao, Jing Shen, Huayu Wu, Yan He, Hongtao Li, Xiaoli Yang
Cancer is the leading cause of death in economically developed countries and the second leading cause of death in developing countries. The relationship between genetic polymorphisms and the risk of cancers has been widely researched. Excision repair cross-complementing group 2 (ERCC2) gene plays important roles in the nucleotide excision repair pathway. There is contrasting evidence on the association between the ERCC2 Asp312Asn polymorphism and the risk of cancer. We conducted a comprehensive meta-analysis in order to assess the correlation between these factors...
April 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28487617/endoscopic-ultrasound-guided-cutting-of-holes-and-deep-biopsy-for-diagnosis-of-gastric-infiltrative-tumors-and-gastrointestinal-submucosal-tumors-using-a-novel-vertical-diathermic-loop
#11
Yu-Mei Liu, Xiu-Jiang Yang
AIM: To report on a more accurate diagnostic possibility offered by endoscopic ultrasound-guided cutting of holes and deep biopsy (EUS-CHDB) for pathologic diagnosis of gastric infiltrative tumors and gastrointestinal submucosal tumors. METHODS: Ten consecutive patients who were suspected of having gastric invasive tumors or gastrointestinal submucosal tumors underwent EUS-CHDB with a novel vertical diathermic loop. We reviewed their medical data and analysed the effectiveness and safety of this new method...
April 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28481232/quercetin-from-polygonum-capitatum-protects-against-gastric-inflammation-and-apoptosis-associated-with-helicobacter-pylori-infection-by-affecting-the-levels-of-p38mapk-bcl-2-and-bax
#12
Shu Zhang, Jian Huang, Xiaoqin Xie, Yun He, Fei Mo, Zhaoxun Luo
Helicobacter pylori-associated gastritis is a major threat to public health and Polygonum capitatum (PC) may have beneficial effects on the disease. However, the molecular mechanism remains unknown. Quercetin was isolated from PC and found to be a main bioactive compound. The effects of quercetin on human gastric cancer cells GES-1 were determined by xCELLigence. H. pylori-infected mouse models were established. All mice were divided into three groups: control (CG, healthy mice), model (MG, H. pylori infection) and quercetin (QG, mouse model treated by quercetin) groups...
May 6, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28476678/anticancer-efficacy-of-the-ethyl-acetate-extract-from-the-traditional-chinese-medicine-herb-celastrus-orbiculatus-against-human-gastric-cancer
#13
Haibo Wang, Lide Tao, Tengyang Ni, Hao Gu, Feng Jin, Xiaojun Dai, Jun Feng, Yanbing Ding, Weiming Xiao, Shiyu Guo, Tadashi Hisamitsu, Yayun Qian, Yanqing Liu
ETHNOPHARMACOLOGICAL RELEVANCE: The traditional Chinese medicine (TCM) herb Celastrus orbiculatus is an important folk medicinal plant in China that has been used as an anti-inflammatory, antitumor, and analgesic in various diseases. The ethyl acetate extract of C. orbiculatus (C. orbiculatus extract, COE) was reported to show significant antitumor effects. However, no study in China or abroad has reported the effect and mechanism of COE in triggering apoptosis of gastric cancer (GC) cells...
May 2, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28469125/mucosa-associated-lymphoid-tissue-malt-lymphoma-of-the-colon-a-case-report-and-a-literature-review
#14
Hafsa Abbas, Masooma Niazi, Jasbir Makker
BACKGROUND Non-Hodgkin lymphoma (NHL) is a well-known hematologic malignancy. The gastrointestinal (GI) tract is the most commonly involved extra nodal site. MALT lymphomas are uncommon, accounting for 5% of all NHL. Gastric mucosa-associated lymphoid tissue (MALT) lymphoma is the prototype seen in association with Helicobacter pylori. Colonic MALT lymphoma is rare and comprises only 2.5% of the MALT lymphomas. Its etiology and treatment is not well established.  CASE REPORT A 56-year-old Hispanic woman presented to the clinic with symptoms of chronic epigastric pain for the past three years and a 13-pound weight loss over the past two months...
May 4, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28465633/unusual-gastric-tumors-and-tumor-like-lesions-radiological-with-pathological-correlation-and-literature-review
#15
REVIEW
Yuan-Mao Lin, Nai-Chi Chiu, Anna Fen-Yao Li, Chien-An Liu, Yi-Hong Chou, Yi-You Chiou
Although gastric tumors have overlapping radiologic appearances, some unusual tumors may present specific imaging features. Using multidetector computed tomography (MDCT), with water as a negative oral contrast agent and intravenous contrast medium, can provide critical information for the diagnosis of gastric diseases. In addition, MDCT can evaluate the involvement of the gastric wall and extragastric extent of the disease, as compared with gastroenteroscopy and double-contrast upper gastrointestinal study...
April 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28460208/a-new-animal-model-of-gastric-lymphomagenesis-april-transgenic-mice-infected-by-helicobacter-species
#16
Pauline Floch, Julien Izotte, Julien Guillemaud, Elodie Sifré, Pierre Costet, Benoit Rousseau, Amandine Marine Laur, Alban Giese, Victoria Korolik, Francis Mégraud, Pierre Dubus, Michael Hahne, Philippe Lehours
APRIL is a member of the tumor necrosis factor cytokine family involved in the regulation of B-cell immunity. We present a study of the infection by Helicobacter species of transgenic (Tg) C57BL6 mice, ectopically expressing the human form of APRIL. Wild-type (WT) and APRIL Tg mice were infected with Helicobacter felis and Helicobacter pylori and compared with noninfected animals. Mice were euthanized 18 months after infection, and inflammatory responses and histologic alterations were analyzed. Flow cytometry results revealed that WT-infected mice had less leukocyte infiltration than APRIL Tg-infected mice...
April 28, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28458356/control-of-constipation-in-patients-receiving-chop-or-chop-like-chemotherapy-regimens-for-non-hodgkin-s-lymphoma
#17
Hiroko Hayashi, Akio Suzuki, Koichi Ohata, Masashi Ishihara, Yushi Kubota, Ryo Kobayashi, Yuhei Shibata, Hiroshi Nakamura, Nobuhiko Nakamura, Junichi Kitagawa, Hisashi Tsurumi, Masahito Shimizu, Yoshinori Itoh
Management of constipation in patients receiving cyclophosphamide, doxorubicin, vincristine and prednisolone (CHOP) or CHOP-like chemotherapy regimens is important for prevention of paralytic ileus. We reported earlier that the laxative action of magnesium oxide is reversed by the concomitant use of antacids in cancer patients receiving opioid analgesics. Here, we assessed the prevalence of prophylactic laxative medication for the control of constipation in patients receiving CHOP or CHOP-like regimens for non-Hodgkin's lymphoma...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28454468/ethanolic-extract-of-thevetia-peruviana-flowers-enhances-tnf-%C3%AE-and-trail-induced-apoptosis-of-human-cervical-cancer-cells-via-intrinsic-and-extrinsic-pathways
#18
Chittima Managit, Hiroaki Sakurai, Ikuo Saiki
Tumor necrosis factor-α (TNF-α) and TNF-related apoptosis-inducing ligand (TRAIL) are promising candidates for cancer treatment due to their ability to induce apoptosis through death receptor stimulation. However, their usage may be limited due to the resistance of cancer cells to TNF-α- and TRAIL-induced apoptosis. Currently, there is interest in screening for natural products that can sensitize cancer cells to TNF-α- and TRAIL-induced apoptosis for their use in combination with TNF-α or TRAIL. It was previously reported that the bark extract of Thevetia peruviana showed a reversal effect on TRAIL-resistance in human gastric adenocarcinoma cell lines...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454330/high-bim-mrna-levels-are-associated-with-longer-survival-in-advanced-gastric-cancer
#19
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/28454117/elimination-of-lmp1-expressing-cells-from-a-monolayer-of-gastric-cancer-ags-cells
#20
Yoshitaka Sato, Shingo Ochiai, Takayuki Murata, Teru Kanda, Fumi Goshima, Hiroshi Kimura
Epstein-Barr virus (EBV) latently infects malignant epithelial cells in approximately 10% of all gastric cancers. Latent membrane protein 1 (LMP1), an oncogenic protein, plays an important role in malignant transformation in EBV-associated nasopharyngeal carcinoma and B-cell lymphoma; however, its expression has not been detected in EBV-associated gastric cancer. To address why LMP1 has not been detected in EBV-positive gastric tumors, we focused on the interactions between LMP1-positive and -negative cells and stably expressed LMP1 in the gastric cancer cell line AGS...
April 10, 2017: Oncotarget
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