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https://www.readbyqxmd.com/read/28524600/validation-of-smartpill-%C3%A2-wireless-motility-capsule-for-gastrointestinal-transit-time-intra-subject-variability-software-accuracy-and-comparison-with-video-capsule-endoscopy
#1
H O Diaz Tartera, D-L Webb, A Kh Al-Saffar, M A Halim, G Lindberg, P Sangfelt, P M Hellström
BACKGROUND: There is interest in ultimately combining endoscopy and motility assessments. Gastric emptying (GET), small bowel (SBTT), colon (CTT) and whole gut transit (WGTT) times are conveniently obtained by SmartPill(®) wireless motility capsule (WMC) that records luminal pH, temperature and pressure. Reproducibility within same subjects and accuracy of software derived times (MotiliGI(®) ) were investigated for diagnostic application. GET and SBTT were separately measured using video capsule endoscopy (VCE)...
May 19, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28489504/validation-of-the-cell-line-ls180-as-a-model-for-study-of-the-gastrointestinal-toxicity-of-mycophenolic-acid
#2
Svenja Heischmann, Uwe Christians
1. Gastrointestinal (GI) intolerability is a concern for drugs such as mycophenolic acid (MPA) and drug metabolism may play a role. Few in vitro models exist that allow for the pre-clinical evaluation of a potential role of drug metabolism in intestinal drug toxicity. Thus, we sought to develop an in vitro model based on the human colon adenocarcinoma cell line LS180 to investigate MPA's negative effects on intestinal cells. 2. Stability of expression of key enzymes of MPA metabolism (UGT1A7, UGT1A9, UGT1A10, UGT2B7, CYP3A4, and CYP3A5), transporters (OATP1B1, OATP1B3, OATP2B1, MRP1, MRP2, and MDR1) and the nuclear receptor PXR over 12 passages in combination with guanosine supplementation to counter MPA's anti-proliferative effects (determined by western blot analysis and proliferation assays, respectively), was established...
May 10, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28486225/fatty-acids-induce-stemness-in-the-stromal-cells-of-a-ct26-mouse-tumor-model
#3
Isao Kawahara, Takuya Mori, Kei Goto, Kiyomu Fujii, Hitoshi Ohmori, Shingo Kishi, Rina Fujiwara-Tani, Hiroki Kuniyasu
The potential effects of 2 types of fatty acids on colorectal cancer (CRC) were assessed using cancer stromal cells. Linoleic acid (LA; C-18, n-6 unsaturated fatty acid) and elaidic acid (EA; C-18, trans acid), both known to affect colon carcinogenesis and cancer progression, were administered by gavage to BALB/c mice, which were inoculated with CT26 syngeneic colon cancer cells in the back. Both EA and LA treatments enhanced tumor growth and metastasis. EA and LA also increased the number of CD133-positive stromal cells in the tumor capsule...
May 10, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28469711/capsular-polysaccharide-inhibits-adhesion-of-bifidobacterium-longum-105-a-to-enterocyte-like-caco-2-cells-and-phagocytosis-by-macrophages
#4
Amin Tahoun, Hisayoshi Masutani, Hanem El-Sharkawy, Trudi Gillespie, Ryo P Honda, Kazuo Kuwata, Mizuho Inagaki, Tomio Yabe, Izumi Nomura, Tohru Suzuki
BACKGROUND: Bifidobacterium longum 105-A produces markedly high amounts of capsular polysaccharides (CPS) and exopolysaccharides (EPS) that should play distinct roles in bacterial-host interactions. To identify the biological function of B. longum 105-A CPS/EPS, we carried out an informatics survey of the genome and identified the EPS-encoding genetic locus of B. longum 105-A that is responsible for the production of CPS/EPS. The role of CPS/EPS in the adaptation to gut tract environment and bacteria-gut cell interactions was investigated using the ΔcpsD mutant...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/28431493/pan-intestinal-capsule-endoscopy-in-patients-with-postoperative-crohn-s-disease-a-pilot-study
#5
Johannes Hausmann, Renate Schmelz, Jens Walldorf, Natalie Filmann, Stefan Zeuzem, Jörg G Albert
BACKGROUND: Patients are at increased risk of disease recurrence after surgical treatment of Crohn's disease. Endoscopic detection of postoperative, ileo-colonic inflammation is well established, but the potential of pan-intestinal endoscopy is yet unknown. METHODS: This prospective multicenter pilot study assessed the value of pan-intestinal capsule endoscopy using a colon capsule endoscope for the detection of inflammatory recurrence of Crohn´s disease. Patients who had been operatively treated for Crohn´s disease were included...
April 21, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28429597/is-capsule-colonoscopy-the-solution-for-incomplete-conventional-colonoscopy
#6
Miguel Mascarenhas-Saraiva
The era of colon capsule endoscopy (CCE) started in 2007. Few years later second-generation CCE (CCE-2) (Medtronic, Minneapolis, USA) was launched, featuring an improved optical system allowing for nearly 360° coverage via two 172° angle cameras, and adaptive frame rate function (ranging from 4 to 35 images per second depending on capsule motion). At present the main clinical indications for CCE are: a) completion of incomplete colonoscopy; b) polyp detection; and c) investigation of inflammatory bowel disease (IBD)...
April 21, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28408091/accessory-genetic-content-in-campylobacter-jejuni-st21cc-isolates-from-feces-and-blood
#7
C P A Skarp, O Akinrinade, R Kaden, C Johansson, H Rautelin
Campylobacter jejuni is an important foodborne pathogen and the most commonly reported bacterial cause of gastroenteritis. C. jejuni is occasionally found in blood, although mechanisms important for invasiveness have remained unclear. C. jejuni is divided into many different lineages, of which the ST21 clonal complex (CC) is widely distributed. Here, we performed comparative genomic and in vitro analyses on 17C. jejuni ST21CC strains derived from human blood and feces in order to identify features associated with isolation site...
April 3, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28392984/non-native-molluscan-colonizers-on-deliberately-placed-shipwrecks-in-the-florida-keys-with-description-of-a-new-species-of-potentially-invasive-worm-snail-gastropoda-vermetidae
#8
Rüdiger Bieler, Camila Granados-Cifuentes, Timothy A Rawlings, Petra Sierwald, Timothy M Collins
Artificial reefs created by deliberately sinking ships off the coast of the Florida Keys island chain are providing new habitat for marine invertebrates. This newly developing fouling community includes the previously reported invasive orange tube coral Tubastraea coccinea and the non-native giant foam oyster Hyotissa hyotis. New SCUBA-based surveys involving five shipwrecks spanning the upper, middle, and lower Florida Keys, show T. coccinea now also established in the lower Keys and H. hyotis likewise extending to new sites...
2017: PeerJ
https://www.readbyqxmd.com/read/28389547/engineering-of-bacteriophages-y2-dpol1-c-and-y2-luxab-for-efficient-control-and-rapid-detection-of-the-fire-blight-pathogen-erwinia-amylovora
#9
Yannick Born, Lars Fieseler, Valentin Thöny, Nadja Leimer, Brion Duffy, Martin J Loessner
Erwinia amylovora is the causative agent of fire blight, a devastating plant disease affecting members of the Rosaceae Alternatives to antibiotics for control of fire blight symptoms and outbreaks are highly desirable, due to increasing drug-resistance and tight regulatory restrictions. Moreover, the available diagnostic methods either lack sensitivity, speed, or are unable to discriminate between live and dead bacteria. Owing to their extreme biological specificity, bacteriophages are promising alternatives for both aims...
April 7, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28326061/come-an-essential-response-regulator-negatively-regulates-the-expression-of-the-capsular-polysaccharide-locus-and-attenuates-the-bacterial-virulence-in-streptococcus-pneumoniae
#10
Yuqiang Zheng, Xuemei Zhang, Xiaofang Wang, Libin Wang, Jinghui Zhang, Yibing Yin
The capsular polysaccharide (CPS) of Streptococcus pneumoniae is the main virulence factors required for effective colonization and invasive disease. The capacity to regulate CPS production at the transcriptional level is critical for the survival of S. pneumoniae in different host niches, but little is known about the transcription regulators of cps locus. In the present study, we isolated and identified the response regulator ComE, the master competence switch in transformation of S. pneumoniae, as a transcriptional regulator of cps locus by DNA affinity chromatography-pulldown, MALDI-TOF mass spectrometry (MS) and electrophoretic mobility shift assay (EMSA)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28321345/a-patency-capsule-remained-intact-in-the-colon-over-210-hours
#11
Yu Hihara, Satoru Joshita, Toshiharu Takahashi, Shinji Okaniwa, Yoshiki Mizukami, Yoshiyuki Nakamura
We present an unusual case of a 35-year-old male patient whom a patency capsule stayed in his gut without breaking. He has a history of Peutz-Jeghers syndrome and multiple abdominal surgeries. Prestudy was performed for abdominal searching, but a patency capsule remained in the colon over 9 days. He displayed neither abdominal nor obstructive symptoms in that period. We collected the patency capsule using colonoscopy after dilating a postoperative stricture at an anastomotic site of the rectum. Clinicians should bear in mind that patency capsules may become retained as distally as the colon in patients with a surgical history of the large intestine...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28295697/diagnostic-capability-of-colon-capsule-endoscopy-for-advanced-colorectal-cancer-a-pilot-study
#12
Yumiko Ota, Atsuo Yamada, Yuka Kobayashi, Ryota Niikura, Takayuki Shimpoh, Akiko Narita, Shuntaro Yoshida, Nobumi Suzuki, Hirotsugu Watabe, Yoshihiro Hirata, Soichiro Ishihara, Eiji Sunami, Toshiaki Watanabe, Kazuhiko Koike
BACKGROUND AND AIM: Colon capsule endoscopy (CCE) is a safe and effective method for detecting lesions in the colon. However, the sensitivity of CCE in detecting advanced colorectal cancer (CRC) has not been sufficiently evaluated. Therefore, the aim of the present study was to assess the sensitivity of CCE in detecting advanced CRC. METHODS: Patients previously diagnosed with advanced CRC by conventional colonoscopy underwent CCE. Primary outcome measure was the sensitivity of CCE in detecting advanced CRC per patient and per lesion...
March 10, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28295515/two-cases-of-melanomas-paradoxically-metastasizing-to-the-intestinal-tract-during-nivolumab-therapy
#13
Hajime Miyazawa, Teruki Yanagi, Yasuyuki Yamaguchi, Keisuke Imafuku, Shinya Kitamura, Hiroo Hata, Jiro Uehara, Nobuki Ichikawa, Yosuke Ohno, Tadashi Yoshida, Shigenori Homma, Hideki Kawamura, Akinobu Taketomi, Hiroshi Shimizu
We report two cases of melanomas in patients who developed intestinal metastasis despite other metastatic sites responding to nivolumab and despite the patients having favorable findings such as vitiligo and normal lactate dehydrogenase. The first case is an 85-year-old man who had been administrated nivolumab for lung/cutaneous metastases. After 22 courses of nivolumab therapy, fever and anorexia had appeared and his bodyweight had decreased. An intussusception on the ileocecal valve was revealed by computed tomography, and emergency surgery revealed metastatic lesions on the colon...
March 11, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28288168/a-novel-flow-cytometry-based-assay-for-the-quantification-of-antibody-dependent-pneumococcal-agglutination
#14
Marrit N Habets, Saskia van Selm, Christa E van der Gaast-de Jongh, Dimitri A Diavatopoulos, Marien I de Jonge
The respiratory pathogen Streptococcus pneumoniae is a major cause of diseases such as otitis media, pneumonia, sepsis and meningitis. The first step towards infection is colonization of the nasopharynx. Recently, it was shown that agglutinating antibodies play an important role in the prevention of mucosal colonization with S. pneumoniae. Here, we present a novel method to quantify antibody-dependent pneumococcal agglutination in a high-throughput manner using flow cytometry. We found that the concentration of agglutinating antibodies against pneumococcal capsule are directly correlated with changes in the size and complexity of bacterial aggregates, as measured by flow cytometry and confirmed by light microscopy...
2017: PloS One
https://www.readbyqxmd.com/read/28286556/prospective-study-of-factors-important-to-achieve-observation-of-the-entire-colon-on-colon-capsule-endoscopy
#15
Junichi Sato, Masanao Nakamura, Osamu Watanabe, Takeshi Yamamura, Kohei Funasaka, Eizaburo Ohno, Ryoji Miyahara, Hiroki Kawashima, Hidemi Goto, Yoshiki Hirooka
BACKGROUND: Colon capsule endoscopy (CCE) is a procedure in which capsule swallowing facilitates observation of the lumen of the entire digestive tract. It does not require an air supply, and is a noninvasive procedure with a markedly low risk of adverse events in comparison with conventional colonoscopy (CS). It reduces patient stress, and may be acceptable to patients. A limitation of this procedure is that the entire colon observation rate (CCE excretion rate, completed CCE rate) is not 100%...
January 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28278201/the-symbiotic-bacterial-surface-factor-polysaccharide-a-on-bacteroides-fragilis-inhibits-il-1%C3%AE-induced-inflammation-in-human-fetal-enterocytes-via-toll-receptors-2-and-4
#16
Fei Jiang, Di Meng, Meiqian Weng, Weishu Zhu, Wenxue Wu, Dennis Kasper, W Allan Walker
Colonizing bacteria interacting with the immature, unlike the mature, human intestine favors inflammation over immune homeostasis. As a result, ten percent of premature infants under 1500 grams weight develop an inflammatory necrosis of the intestine after birth, e.g., necrotizing enterocolitis (NEC). NEC is a major health problem in this population causing extensive morbidity and mortality and an enormous expenditure of health care dollars. NEC can be prevented by giving preterm infants their mother's expressed breast milk or ingesting selective probiotic organisms...
2017: PloS One
https://www.readbyqxmd.com/read/28274774/group-b-streptococcal-colonization-and-transmission-dynamics-in-pregnant-women-and-their-newborns-in-nigeria-implications-for-prevention-strategies
#17
Nubwa Medugu, Kenneth C Iregbu, Robert E Parker, Jessica Plemmons, Pallavi Singh, Lamidi I Audu, Efena Efetie, H Dele Davies, Shannon D Manning
OBJECTIVES: Because few studies have been conducted on group B Streptococcus (GBS) in Nigeria, we sought to estimate GBS colonization and transmission frequencies for 500 women and their newborns and identify risk factors for both outcomes. METHODS: GBS strains were characterized for antibiotic susceptibilities, capsule (cps) genotype, pilus island profile, and multilocus sequence type (ST). RESULTS: In all, 171 (34.2%) mothers and 95 (19...
March 5, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28265285/accuracy-of-colon-capsule-endoscopy-in-detecting-colorectal-polyps-in-individuals-with-familial-colorectal-cancer-could-we-avoid-colonoscopies
#18
Cristina Alvarez-Urturi, Gloria Fernández-Esparrach, Inés Ana Ibáñez, Cristina Rodríguez De Miguel, Josep Maria Dedeu, Xavier Bessa, Henry Córdova, Maria Pellisé, Francesc Balaguer, Angels Ginés, Luis Barranco, Isis K Araujo, Montserrat Andreu, Josep Llach, Antoni Castells, Begoña González-Suarez
Background. Individuals with a family history of colorectal cancer (CRC) have an increased risk of CRC. We evaluated the diagnostic yield of CCE in the detection of lesions and also two different colon preparations. Methods. A prospective multicenter study was designed to assess CCE diagnostic yield in a cohort of asymptomatic individuals with a family history of CRC. CCE and colonoscopy were performed on the same day by 2 endoscopists who were blinded to the results of the other procedure. Results. Fifty-three participants were enrolled...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28260599/peritonsillar-abscess-clinical-aspects-of-microbiology-risk-factors-and-the-association-with-parapharyngeal-abscess
#19
REVIEW
Tejs Ehlers Klug
PTA is a collection of pus located between the tonsillar capsule and the pharyngeal constrictor muscle. It is considered a complication of acute tonsillitis and is the most prevalent deep neck infection (approximately 2000 cases annually in Denmark) and cause of acute admission to Danish ENT departments. Teenagers and young adults are most commonly affected and males may predominate over females. However, no studies of age- and gender-stratified incidence rates have previously been published. Furthermore, smoking may be associated with increased risk of peritonsillar abscess (PTA) development, although the magnitude of the association has not been estimated...
March 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28247769/symptomatic-retention-of-the-agile%C3%A2-patency-capsule
#20
Juan Egea Valenzuela, Esther Estrella Diez, Fernando Alberca de Las Parras
The Agile® capsule has shown to be useful when evaluating the patency of the small bowel in patients prior to capsule endoscopy studies. It is a safe tool and a low rate of complications have been reported, highlighting symptomatic retention, although references in literature are scarce and it is only observed in 1.2% of the procedures. We present the case of a symptomatic retention of this device in a patient with previously known colonic Crohn's disease in who a small bowel study was indicated and was sent for prior patency test...
March 1, 2017: Revista Española de Enfermedades Digestivas
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