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Pedro Popoutchi, Fernando Lander Mota, Marcelo Averbach, Marcela Silva de Menezes, Renata de Almeida Coudry
No abstract text is available yet for this article.
February 2018: VideoGIE: an official video journal of the American Society for Gastrointestinal Endoscopy
Soo Kyoung Park, Soung Yong Jin, Sun Hee Yeon, Sung Bok Lee, Jun Xu, Young Hoon Yoon, Ki Sang Rha, Yong Min Kim
BACKGROUND: Nasal polyposis is characterized by persistent inflammation and remodeling in sinonasal mucosa. Toll-like receptor 9 (TLR9) is a DNA receptor of the innate immune system that plays a pivotal role in fibrosis and inflammatory responses. The aim of this study is to explore the expression, activity, and potential pathogenic role of TLR9 signaling in tissue remodeling in nasal polyp-derived fibroblasts (NPDFs). METHODS: Fibrotic and inflammatory responses elicited by type A CpG oligonucleotides were examined in the NPDFs by a combination of real-time quantitative polymerase chain reaction, Western blot analysis, enzyme-linked immunosorbent assay, and immunofluorescence staining...
June 14, 2018: International Forum of Allergy & Rhinology
Minghui Pang, Yijun Liu, Xiaolin Hou, Jialiang Yang, Xuelai He, Nengyi Hou, Peixi Liu, Luo Liang, Junwen Fu, Kang Wang, Zimeng Ye, Bo Gong
Familial adenomatous polyposis (FAP), an autosomal dominant disease, is a colon cancer predisposition syndrome that manifests as a large number of adenomatous polyps. Mutations in the Adenomatous polyposis coli (APC) gene are responsible for the majority of cases of FAP. The purpose of the present study was to report the clinical features of a Chinese family with FAP and screen for novel mutations using the targeted next‑generation sequencing technology. Among the 29 family members, 12 were diagnosed of FAP...
June 5, 2018: Molecular Medicine Reports
Pilar Mur, Ann-Sofie Jemth, Luka Bevc, Nuno Amaral, Matilde Navarro, Rafael Valdés-Mas, Tirso Pons, Gemma Aiza, Miguel Urioste, Alfonso Valencia, Conxi Lázaro, Victor Moreno, Xose S Puente, Pål Stenmark, Ulrika Warpman-Berglund, Gabriel Capellá, Thomas Helleday, Laura Valle
The causal association of NUDT1 ( = MTH1) and OGG1 with hereditary colorectal cancer (CRC) remains unclear. Here we sought to provide additional evidence for or against the causal contribution of NUDT1 and OGG1 mutations to hereditary CRC and/or polyposis. Mutational screening was performed using pooled DNA amplification and targeted next generation sequencing in 529 families (441 uncharacterized MMR-proficient familial non-polyposis colorectal cancer and 88 polyposis cases). Co-segregation, in silico analyses, in vitro functional assays and case-control associations, were carried out to characterize the identified variants...
June 13, 2018: Human Mutation
Kazuaki Shibuya, Shigenori Homma, Tadashi Yoshida, Yosuke Ohno, Nobuki Ichikawa, Hideki Kawamura, Teppei Imamoto, Yoshihiro Matsuno, Akinobu Taketomi
The development of colorectal cancer in long-standing Crohn's disease (CD) patients has become a major complication. Therapeutic guidelines for CD-associated cancer (CDAC) have already been established in Western countries; however, specific guidelines are not currently available in Japan. Surveillance of the residual intestine for cancer screening is important for long-standing CD patients. The present case report describes the occurrence of rectal carcinoma in a patient with a 25-year history of CD. A 37-year-old male with a 17-year history of CD underwent semi-emergent subtotal colectomy and ileostomy for bowel obstruction secondary to the transverse colon stenosis, and multiple severe stenosis and inflammation...
July 2018: Molecular and Clinical Oncology
Tanya M Laidlaw, Katherine N Cahill, Juan Carlos Cardet, Katherine Murphy, Jing Cui, Brittney Dioneda, Parul Kothari, Benjamin A Raby, Elliot Israel, Joshua Boyce
BACKGROUND: Aspirin-exacerbated respiratory disease (AERD) is characterized by asthma, recurrent nasal polyposis, and respiratory reactions upon ingestion of cyclooxygenase-1 inhibitors. Increased numbers of platelet-leukocyte aggregates are present in the sinus tissue and blood of patients with AERD, compared to aspirin-tolerant patients, and platelet activation may contribute to aspirin-induced reactions. OBJECTIVE: We sought to determine whether treatment with prasugrel, which inhibits platelet activation by blocking the P2Y12 receptor, would attenuate the severity of sinonasal and respiratory symptoms induced during aspirin challenge in subjects with AERD...
June 8, 2018: Journal of Allergy and Clinical Immunology
Baojun Fang, Guoliang Li, Chongfu Xu, Yuzuo Hui, Gang Li
Continuous activation of the Wnt/β-Catenin signaling has been reported to play important roles in multiple process of tumor progression, leading to uncontrolled cancer cell proliferation, growth, and survival. However, the mechanism underlying the regulation of the Wnt/β-Catenin pathway remains largely unknown. Determining the molecular mechanism of the Wnt/β-Catenin pathway's aberrant activation in glioma carcinogenesis might improve therapeutic strategies for patients with glioma. In this study, we showed that the expression of microRNA miR-1249 was markedly upregulated in glioma cell lines and tissues...
2018: American Journal of Translational Research
R Jankowski, C Rumeau, D T Nguyen, P Gallet
Nasalisation is a surgical technique proposed for the treatment of nasal polyposis in 1995. The technique as initially described was based on large opening of the maxillary, sphenoidal and frontal ostia and resection of the middle turbinates, with the aim of resecting the mucosa of the lateral masses of the ethmoid as completely and safely as possible. Recent findings on the evolution and development of the nose and sinuses and sinus physiology allow both the concept and the technique of nasalisation to be updated...
June 7, 2018: European Annals of Otorhinolaryngology, Head and Neck Diseases
Matti Penttilä
BACKGROUND: The ostiomeatal complex (OMC), comprising a small natural maxillary sinus ostium and narrow infundibulum, transmits the air diffusion into the antrum and mucociliary transport from the antrum, and is considered a key area in chronic rhinosinusitis (CRS). Thin membranous anterior and posterior fontanelle areas below the OMC can rupture forming a perforation, accessory maxillary ostium (AMO), that increases antral airflow changing the anatomy and function of the sinus. The purpose of this study was to report the first case series of CRS patients who had undergone repair of fontanelle defects aiming to reconstruct normal structures...
June 8, 2018: International Forum of Allergy & Rhinology
Mara Fornasarig, Raffaella Magris, Valli De Re, Ettore Bidoli, Vincenzo Canzonieri, Stefania Maiero, Alessandra Viel, Renato Cannizzaro
Lynch syndrome (LS) and familial adenomatous polyposis (FAP) are autosomal dominant hereditary diseases caused by germline mutations leading to the development of colorectal cancer. Moreover, these mutations result in the development of a spectrum of different tumors, including gastric cancers (GCs). Since the clinical characteristics of GCs associated with LS and FAP are not well known, we investigated clinical and molecular features of GCs occurring in patients with LS and FAP attending our Institution. The Hereditary Tumor Registry was established in 1994 at the Department of Oncologic Gastroenterology, CRO Aviano National Cancer Institute, Italy...
June 6, 2018: International Journal of Molecular Sciences
Amy L Lightner, Scott R Kelley, David W Larson
INTRODUCTION: An IPAA is the preferred operative approach for restoration of intestinal continuity in patients with ulcerative colitis and familial adenomatous polyposis. As minimally invasive approaches have become more widely adopted, their use in IPAA has also become increasingly commonplace. Laparoscopy has the same limitations during the proctectomy portion as seen in operations for rectal cancer, including dissection in the mid-to-lower rectum attributed to angles created by bony confines of the deep pelvis and lack of visibility when constructing the anastomosis...
July 2018: Diseases of the Colon and Rectum
Kahori Morino, Yuichi Honma, Shinsuke Kumei, Tatsuyuki Watanabe, Keiichiro Kume, Ichiro Yoshikawa, Masaru Harada
Cronkhite-Canada syndrome (CCS) is a rare non-inherited disease characterized by gastrointestinal polyposis, chronic diarrhea, ectodermal dysplasia, skin hyperpigmentation, hair loss and nail atrophy. Although the efficacy of corticosteroid and immunomodulatory agents has been demonstrated, no standard therapy regimen has been established, and the prognosis of CCS is still poor due to various complications. We here in report a CCS patient complicated with severe sepsis and disseminated intravascular coagulation who was successfully treated by combined modality therapies, including recombinant human soluble thrombomodulin...
June 6, 2018: Internal Medicine
Ebrahim Karimi, Akbar Bayat, Mohammad Reza Ghahari, Sara Rahavi-Ezabadi, Mehrdad Jafari
Introduction: The major presenting symptom of nasal polyps is nasal obstruction. The role of nasal obstruction in the genesis of laryngeal disorders is still unknown. Materials and Methods: The aim of this study was to evaluate laryngeal videostroboscopic changes after functional endoscopic sinus surgery (FESS) in patients with nasal polyposis. A longitudinal study was carried out from March 2012 to June 2013. Thirty patients with bilateral nasal polyposis who did not respond to maximum medical treatment and were candidates for FESS were recruited...
May 2018: Iranian Journal of Otorhinolaryngology
Emily Ross, Tineke Broer, Anne Kerr, Sarah Cunningham-Burley
Sociological literature has explored how shifts in the point at which individuals may be designated as diseased impact upon experiences of ill health. Research has shown that experiences of being genetically "at risk" are shaped by and shape familial relations, coping strategies, and new forms of biosociality. Less is known about how living with genetic risk is negotiated in the everyday and over time, and the wider forms of identity, communities and care this involves. This article explores these arrangements drawing on online bloggers' accounts of Familial Adenomatous Polyposis (FAP)...
2018: New Genetics and Society
Woo-Jeong Jeong, Eun Ji Ro, Kang-Yell Choi
Aberrant activation of the Wnt/β-catenin and RAS-extracellular signal-regulated kinase (ERK) pathways play important roles in the tumorigenesis of many different types of cancer, most notably colorectal cancer (CRC). Genes for these two pathways, such as adenomatous polyposis coli ( APC ) and KRAS are frequently mutated in human CRC, and involved in the initiation and progression of the tumorigenesis, respectively. Moreover, recent studies revealed interaction of APC and KRAS mutations in the various stages of colorectal tumorigenesis and even in metastasis accompanying activation of the cancer stem cells (CSCs)...
2018: NPJ Precision Oncology
Gil Redelman-Sidi, Anna Binyamin, Isabella Gaeta, Wilhelm Palm, Craig B Thompson, Paul B Romesser, Scott W Lowe, Mukta Bagul, John G Doench, David E Root, Michael S Glickman
Macropinocytosis has emerged as an important pathway of protein acquisition in cancer cells, particularly in tumors with activated Ras such as pancreatic and colon cancer. Macropinocytosis is also the route of entry of Bacillus Calmette-Guerin (BCG) and other microbial therapies of cancer. Despite this important role in tumor biology and therapy, the full mechanisms by which cancer cells can activate macropinocytosis remain incompletely defined. Using BCG uptake to assay macropinocytosis, we executed a genome-wide shRNA screen for macropinocytosis activators and identified Wnt pathway activation as a strong driver of macropinocytosis...
June 5, 2018: Cancer Research
Kazuki Okamoto, Tomohiro Watanabe, Yoriaki Komeda, Ayana Okamoto, Kosuke Minaga, Ken Kamata, Kentaro Yamao, Mamoru Takenaka, Satoru Hagiwara, Toshiharu Sakurai, Tomonori Tanaka, Hiroki Sakamoto, Kiyoshige Fujimoto, Naoshi Nishida, Masatoshi Kudo
Cap polyposis is a rare gastrointestinal disease characterized by multiple inflammatory polyps located between the distal colon and the rectum. Despite the lack of clarity regarding its pathogenesis, mucosal prolapse, chronic inflammatory responses, and Helicobacter pylori infection are considered key contributors to the development of this disease entity. Although it is now generally accepted that dysbiosis of gut microbiota is associated with intestinal and extra-intestinal diseases, alterations of intestinal microbiota have been poorly defined in cap polyposis...
2018: Frontiers in Immunology
Sang Bum Kim, Lu Zhang, Jimok Yoon, Jeon Lee, Jaewon Min, Wenlin Li, Nick V Grishin, Young-Ah Moon, Woodring E Wright, Jerry W Shay
Adenomatous polyposis coli (APC) is a key molecule to maintain cellular homeostasis in colonic epithelium by regulating cell-cell adhesion, cell polarity, and cell migration through activating the APC-stimulated guanine nucleotide-exchange factor (Asef). The APC-activated Asef stimulates the small GTPase, which leads to decreased cell-cell adherence and cell polarity, and enhanced cell migration. In colorectal cancers, while truncated APC constitutively activates Asef and promotes cancer initiation and progression, regulation of Asef by full-length APC is still unclear...
June 4, 2018: Molecular and Cellular Biology
Shashank Sarvepalli, Carol A Burke, Marc Monachese, Brandie H Leach, Lisa Laguardia, Margaret O'Malley, Matthew F Kalady, James M Church
BACKGROUND AND AIMS: Proctocolectomy prevents colorectal cancer in familial adenomatous polyposis (FAP). Colorectal polyp progression is one of the indications for surgery. No data exist regarding the natural history of colorectal polyposis in young patients with FAP. This study examined the rate of polyposis progression and factors associated with it. METHODS: FAP patients <30 years old and with ≥2 colonoscopies with the first colonoscopy after year 2000 were identified...
June 1, 2018: Gastrointestinal Endoscopy
T Hor
In France, 10 to 15% of couples in the overall population have a fertility problem. Preservation of sexual and reproductive function should be a major concern for all patients capable of procreation who undergo treatment for gastro-intestinal disease. The gastro-intestinal diseases most often responsible for fertility disorders include chronic inflammatory diseases, intestinal cancer and hereditary diseases, such as the Lynch syndrome and familial adenomatous polyposis. Obesity is responsible for a 20% loss of fertility but the effects of bariatric surgery on fertility are controversial...
May 29, 2018: Journal of Visceral Surgery
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