keyword
MENU ▼
Read by QxMD icon Read
search

Intraluminal

keyword
https://www.readbyqxmd.com/read/29349482/-esophageal-diverticula-excluding-cricopharyngeal-diverticula
#1
C A Gutschow, H Schmidt
Diverticula of the middle and lower third of the esophagus are commonly associated with esophageal motility disorders. The increase of intraluminal pressure leads to an outpouching of the mucosal and submucosal layers through the esophageal muscle coat. These pouches are also called false diverticula, because they only consist of the mucosal and submucosal esophageal layers. In contrast, the more rarely encountered true diverticula that retain the complete esophageal wall are generally associated with periesophageal granulomatous lymph node disease...
January 18, 2018: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/29346567/epithelial-grafting-of-a-decellularized-whole-tracheal-segment-an-in-vivo-experimental-model
#2
Margot Den Hondt, Bart M Vanaudenaerde, Eric K Verbeken, Jan J Vranckx
OBJECTIVES: Prerequisites for successful trachea transplantation include the use of a biocompatible construct, submucosal vascularization and an epithelial covering. Implantation of non-epithelialized tracheal scaffolds may lead to stenosis. However, epithelial grafting or seeding can only be attempted onto a well-vascularized submucosal bed. Our aim was to investigate a method to prevent stenosis during prelamination of non-epithelialized, gently decellularized rabbit tracheae and to evaluate whether grafting of revascularized constructs with buccal mucosa is feasible...
January 15, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29316025/impedance-spectroscopy-measurements-as-a-tool-for-distinguishing-different-luminal-content-during-bolus-transit-studies
#3
A Ruiz-Vargas, R Mohd Rosli, A Ivorra, J W Arkwright
BACKGROUND: Intraluminal electrical impedance is a well-known diagnostic tool used to study bolus movement in the human esophagus. However, it is use in the human colon it is hindered by the fact that the content cannot be controlled and may include liquid, gas, solid, or a mixture of these at any one time. This article investigates the use of complex impedance spectroscopy to study different luminal content (liquid and gas). METHODS: An excised section of guinea pig proximal colon was placed in an organ bath with Krebs solution at 37°C and a custom built bioimpedance catheter was placed in the lumen...
January 8, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29315896/respiratory-impedance-is-correlated-with-airway-narrowing-in-asthma-using-three-dimensional-computed-tomography
#4
Masato Karayama, Naoki Inui, Kazutaka Mori, Masato Kono, Hironao Hozumi, Yuzo Suzuki, Kazuki Furuhashi, Dai Hashimoto, Noriyuki Enomoto, Tomoyuki Fujisawa, Yutaro Nakamura, Hiroshi Watanabe, Takafumi Suda
BACKGROUND: Respiratory impedance comprises the resistance and reactance of the respiratory system, and can provide detailed information on respiratory function. However, details of the relationship between impedance and morphological airway changes in asthma are unknown. OBJECTIVE: We aimed to evaluate the correlation between imaging-based airway changes and respiratory impedance in patients with asthma. METHODS: Respiratory impedance and spirometric data were evaluated in 72 patients with asthma and 29 reference subjects...
January 6, 2018: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29311197/transcatheter-examination-of-the-peritoneal-dialysis-catheter-with-the-spyglass-direct-visualization-system-a-new-aid-in-diagnosis-and-salvation-of-ultrafiltration-failure-from-partial-catheter-obstruction
#5
Pongpratch Puapatanakul, Piyapan Prueksapanich, Piyaporn Towannang, Phonthep Angsuwatcharakon, Rungsun Rerknimitr, Talerngsak Kanjanabuch
Mechanical complications in peritoneal dialysis (PD), including intraluminal clogging of the PD catheter by fibrin, omentum, or blood clot, are major causes of outflow problems and, in rare cases, lead to technical failure. To visualize an intraluminal image of patients undergoing PD with ineffective ultrafiltration (UF), a SpyGlass fiber optic probe was inserted into the catheter, together with SpyBite biopsy forceps, should the removal of clogging materials be needed. Applying these transcatheter devices in 2 PD patients with unexplained UF failure led to the demonstration of omental plugging at the catheter tip in the first patient and demonstration of intraluminal blood clots in the second patient from whom clots were removal successfully...
January 2018: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/29304524/amino-fucoidan-as-a-vector-for-rtpa-induced-fibrinolysis-in-experimental-thrombotic-events
#6
Radouane Ghebouli, Stephane Loyau, Murielle Maire, Pierre Saboural, Jean-Philippe Collet, Martine Jandrot-Perrus, Didier Letourneur, Frédéric Chaubet, Jean-Baptiste Michel
Acute ischaemic stroke, myocardial infarction and pulmonary embolism are the main causes of mortality and morbidity worldwide. Thrombolysis by intravenous injection of recombinant tissue plasminogen activator (rtPA) remains the most common non-interventional treatment to recanalize occluded vessels. However, this procedure is limited by significant drawbacks, including high doses and bleeding complications. Recent studies showed that fucoidan targets the intraluminal thrombus in vivo. We have developed a chimaera covalently linking fucoidan, able to target platelets within the thrombus, to dilysine, able to non-covalently bind rtPA...
January 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29303880/ab-interno-tube-occlusion-for-postoperative-hypotony-in-a-patient-with-an-ahmed-glaucoma-drainage-device
#7
Max Feinstein, Kareem Moussa, Ying Han
PURPOSE: To report a case of Ahmed glaucoma valve-induced hypotony that was successfully managed with postoperative intraluminal stenting of the aqueous shunt tube. PATIENT AND METHODS: We describe a 68-year-old male with advanced uveitic glaucoma with an intraocular pressure (IOP) of 25▒mm Hg in the left eye. The patient initially responded well to an Ahmed glaucoma valve implant, but at 10 weeks post-implantation, the patient underwent cataract surgery and developed persistent hypotony, choroidal folds, and decreased vision...
January 4, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29299644/the-surgical-strategy-in-massive-corrosive-injury-in-digestive-tract-is-the-extensive-surgery-appropriate
#8
Yung-Hung Chang, Chih-Ying Chien, Chih-Chi Chen, Chih-Yuan Fu, Chi-Hsun Hsieh, Chien-Hung Liao
BACKGROUND: Corrosive ingestion results in necrosis of the digestive tract, spillage of intraluminal fluid, and spread of bacteria that threatens the lives of patients. Some authors advise extensive surgery, although others recommend conservative operation. This study presents the outcomes of the patients of corrosive injury who undergo emergent surgery. METHODS: We conducted a retrospective review including patients with corrosive injury from Jan 2007 to Dec 2013...
January 3, 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/29282210/atp-is-stored-in-lamellar-bodies-to-activate-vesicular-p2x4-in-an-autocrine-fashion-upon-exocytosis
#9
Giorgio Fois, Veronika Eva Winkelmann, Lara Bareis, Laura Staudenmaier, Elena Hecht, Charlotte Ziller, Konstantin Ehinger, Jürgen Schymeinsky, Christine Kranz, Manfred Frick
Vesicular P2X4 receptors are known to facilitate secretion and activation of pulmonary surfactant in the alveoli of the lungs. P2X4 receptors are expressed in the membrane of lamellar bodies (LBs), large secretory lysosomes that store lung surfactant in alveolar type II epithelial cells, and become inserted into the plasma membrane after exocytosis. Subsequent activation of P2X4 receptors by adenosine triphosphate (ATP) results in local fusion-activated cation entry (FACE), facilitating fusion pore dilation, surfactant secretion, and surfactant activation...
December 27, 2017: Journal of General Physiology
https://www.readbyqxmd.com/read/29277709/granulocyte-colony-stimulating-factor-protects-against-endoplasmic-reticulum-stress-in-an-experimental-model-of-stroke
#10
Janet M Menzie-Suderam, Payam Mohammad-Gharibani, Jigar Modi, Zea Ma, Rui Tao, Howard Prentice, Jang-Yen Wu
Granulocyte-colony stimulating factor (G-CSF) is an endogenous growth factor that exhibits a diverse range of neuroprotective mechanisms against a variety of neurological disorders including ischemic stroke. We investigated the anti-apoptotic mechanisms of G-CSF against endoplasmic reticulum (ER) stress induced apoptosis. Sprague-Dawley rats were subjected to transient occlusion of the middle cerebral artery (MCAO) for 90 minutes. Rats were injected with G-CSF (n= 15; 50ug/kg body weight s.c.) for 4 days, starting 24 hours post-MCAO and brains were harvested after 4 days reperfusion (n=16)...
December 22, 2017: Brain Research
https://www.readbyqxmd.com/read/29276590/correlation-of-gastroesophageal-reflux-disease-assessment-symptom-questionnaire-to-impedance-ph-measurements-in-children
#11
Sittichoke Prachuapthunyachart, Chaowapong Jarasvaraparn, David A Gremse
Background: Esophageal multichannel intraluminal impedance-pH monitoring has become one of the preferred tests to correlate observed reflux-like behaviors with esophageal reflux events. The Gastroesophageal reflux disease Assessment Symptom Questionnaire is a validated tool used to distinguish infants with gastroesophageal reflux disease from healthy children. The aim of this study was to determine whether the Gastroesophageal reflux disease Assessment Symptom Questionnaire composite symptom scores and individual symptom scores correlate with outcomes in esophageal multichannel intraluminal impedance-pH monitoring...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/29275387/syndrome-of-x-linked-intellectual-disability-epilepsy-progressive-brain-atrophy-and-large-head-associated-with-slc9a6-mutation
#12
Hansashree Padmanabha, Arushi Gahlot Saini, Jitendra Kumar Sahu, Pratibha Singhi
SLC9A6 gene encodes for a sodium/hydrogen exchanger-6 protein mainly involved in endosomal trafficking and maintaining intraluminal pH. Loss of function mutations in SLC9A6 gene in children has been associated with Christianson syndrome and autism spectrum disorder. We describe a 3-year-old boy with intellectual disability, infantile-onset drug-refractory epilepsy, progressive brain atrophy and large head with a novel missense hemizygous mutation in exon 16 of the SLC9A6 gene on chromosome X. Presence of large head, early developmental regression and progressive cerebral atrophy expand the phenotypic spectrum of SLC9A6 mutations...
December 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29275234/a-case-of-gastric-glomus-tumor-resection-using-laparoscopy-endoscopy-cooperative-surgery-lecs
#13
Taro Aoba, Takehito Kato, Kazuhiro Hiramatsu, Yoshihisa Shibata, Motoi Yoshihara, Naoya Yamaguchi, Tadahiro Kamiya
INTRODUCTION: Gastric glomus tumors are rare submucosal mesenchymal tumors. Because gastric glomus tumors are submucosal tumors and resemble gastrointestinal stromal tumors (GISTs), preoperative diagnosis is difficult. We present a case of gastric glomus tumor that was removed by laparoscopy endoscopy cooperative surgery (LECS). CASE PRESENTATION: A 67-year-old female was taken to the emergency room at our hospital due to epigastric pain. An upper gastrointestinal endoscopy revealed a submucosal tumor (SMT) located in the lesser curvature of the upper body of the stomach...
December 16, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29274478/a-compound-scaffold-with-uniform-longitudinally-oriented-guidance-cues-and-a-porous-sheath-promotes-peripheral-nerve-regeneration-in-vivo
#14
Liangliang Huang, Lei Zhu, Xiaowei Shi, Bing Xia, Zhongyang Liu, Shu Zhu, Yafeng Yang, Teng Ma, Pengzhen Cheng, Kai Luo, Jinghui Huang, Zhuojing Luo
Scaffolds with inner fillers that convey directional guidance cues represent promising candidates for nerve repair. However, incorrect positioning or non-uniform distribution of intraluminal fillers might result in regeneration failure. In addition, proper porosity (to enhance nutrient and oxygen exchange but prevent fibroblast infiltration) and mechanical properties (to ensure fixation and to protect regenerating axons from compression) of the outer sheath are also highly important for constructing advanced nerve scaffolds...
December 20, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29274442/the-effect-of-2-hydroxypropyl-%C3%AE-cyclodextrin-on-the-intestinal-permeation-through-mucus
#15
Jef Stappaerts, Philippe Berben, Irem Cevik, Patrick Augustijns
In addition to its important role in preventing the interaction of toxic agents with the intestinal lining, the intestinal mucus layer can impede the permeation of drugs. The purpose of this study was to evaluate whether the presence of HP-β-CD in the intraluminal environment could influence the permeation of drugs through a layer of mucus. To this end, a new artificial membrane insert system incorporating a fixed mucus layer was developed to monitor the permeation of methylparaben (log P=1.96) and heptylparaben (log P=4...
December 20, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29262418/gastro-oesophageal-reflux-and-apnoea-is-there-a-temporal-relationship
#16
Thomas Rossor, Gwendolyn Andradi, Kamal Ali, Ravindra Bhat, Anne Greenough
BACKGROUND: Gastro-oesophageal reflux (GOR) and apnoea are common in infants; whether there is a causal relationship is controversial. OBJECTIVES: To determine whether there was a temporal relationship between GOR and apnoea, in particular, the frequency of obstructive apnoeas and if the frequency of GOR episodes correlated with apnoea frequency when maturity at testing was taken into account. METHODS: Polysomnography and pH/multichannel intraluminal impedance (MII) studies were performed...
December 21, 2017: Neonatology
https://www.readbyqxmd.com/read/29261347/common-first-pass-ct-angiography-findings-associated-with-rapid-growth-rate-in-abdominal-aorta-aneurysms-between-3-and-5-cm-in-largest-diameter
#17
Ayaz Aghayev, Andreas A Giannopoulos, Jessica Gronsbell, Elizabeth George, Tianxi Cai, Michael L Steigner, Dimitrios Mitsouras, Frank J Rybicki
OBJECTIVE: The purpose of this study was to describe CT angiography (CTA) findings of lumen contrast heterogeneity and intraluminal thrombus volume and to evaluate their relationship with rapid aneurysm growth in patients with abdominal aortic aneurysms (AAA) between 3 and 5 cm. MATERIALS AND METHODS: This institutional review board-approved and HIPAA-compliant single-center retrospective study included CTA studies obtained between January 2004 and December 2014 in 140 patients with AAA (101 men, 39 women; mean age ± SD, 70 ± 9 years old; age range, 22-87 years old)...
December 20, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29260142/myxoglobulosis-in-the-appendix
#18
Cengiz Koçak, Akile Zengin, İbrahim Girgin, Fatma Ferda Kartufan, Mehmet Hüseyin Metineren
Myxoglobulosis is a specific type of mucocele consisting of mucoid material. It is characterized by opaque, transparent globules that resemble "fish eggs" or "frogspawns". It is generally diagnosed incidentally during an appendectomy or an autopsy. In this paper, we aim to present the case of a 58-year-old male patient who was referred to our hospital because of abdominal pain and loss of appetite. The patient underwent an appendectomy. Opaque intraluminal globules were found in the appendectomy material. The globules resembled pearls and they were 2-3 mm in diameter...
2017: Turkish Journal of Surgery
https://www.readbyqxmd.com/read/29259559/mechanical-regulation-of-gene-expression-in-gut-smooth-muscle-cells
#19
REVIEW
Xuan-Zheng Shi
Intraluminal contents and their movement along the gastrointestinal tract create shear stress and mechanical stretch on the gut wall. While the shear stress is important in the initiation of immediate physiological responses, the circumferential mechanical stretch, such as that in obstructive bowel disorders, exerts long-lasting impacts on bowel functions by mainly affecting the deeper muscularis externae. Recent studies demonstrate that mechanical stretch alters gene transcription in gut smooth muscle cells (SMC), and the stretch-altered gene expression (mechano-transcription) may play a critical role in pathogenesis of motility dysfunction and abdominal pain in obstruction...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29259558/modest-static-pressure-suppresses-columnar-epithelial-cell-growth-in-association-with-cell-shape-and-cytoskeletal-modifications
#20
Man Hagiyama, Norikazu Yabuta, Daisuke Okuzaki, Takao Inoue, Yasutoshi Takashima, Ryuichiro Kimura, Aritoshi Ri, Akihiko Ito
Intraluminal pressure elevation can cause degenerative disorders, such as ileus and hydronephrosis, and the threshold is fairly low and constant, 20-30 cm H2O. We previously devised a novel two-chamber culture system subjecting cells cultured on a semipermeable membrane to increased culture medium height (water pressure up to 60 cm H2O). Here, we sought to determine how a continuous pressure load of ~30 cm H2O affects proliferating epithelial cells with special interest in the link with cell morphology. We cultured several different cell lines using the low static pressure-loadable two-chamber system, and examined cell growth, cell cycle, and cell morphology...
2017: Frontiers in Physiology
keyword
keyword
13236
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"