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https://www.readbyqxmd.com/read/28214561/on-the-development-of-the-hepatopancreatic-ductal-system
#1
REVIEW
Alethia Villasenor, Didier Y R Stainier
The hepatopancreatic ductal system is the collection of ducts that connect the liver and pancreas to the digestive tract. The formation of this system is necessary for the transport of exocrine secretions, for the correct assembly of the pancreatobiliary ductal system, and for the overall function of the digestive system. Studies on endoderm organ formation have significantly advanced our understanding of the molecular mechanisms that govern organ induction, organ specification and morphogenesis of the major foregut-derived organs...
February 15, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28212976/functional-lumen-imaging-probe-for-the-management-of-esophageal-disorders-expert-review-from-the-clinical-practice-updates-committee-of-the-aga-institute
#2
REVIEW
Ikuo Hirano, John E Pandolfino, Guy E Boeckxstaens
The functional luminal imaging probe is a Food and Drug Administration-approved measurement tool used to measure simultaneous pressure and diameter to guide management of various upper gastrointestinal disorders. Additionally, this tool is also approved to guide therapy during bariatric procedures and specialized esophageal surgery. Although it has been commercially available since 2009 as the endolumenal functional lumen imaging probe (EndoFLIP), the functional luminal imaging probe has had limited penetrance into clinical settings outside of specialized centers...
March 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28211530/factors-affecting-leaf-selection-by-foregut-fermenting-proboscis-monkeys-new-insight-from-in-vitro-digestibility-and-toughness-of-leaves
#3
Ikki Matsuda, Marcus Clauss, Augustine Tuuga, John Sugau, Goro Hanya, Takakazu Yumoto, Henry Bernard, Jürgen Hummel
Free-living animals must make dietary choices in terms of chemical and physical properties, depending on their digestive physiology and availability of food resources. Here we comprehensively evaluated the dietary choices of proboscis monkeys (Nasalis larvatus) consuming young leaves. We analysed the data for leaf toughness and digestibility measured by an in vitro gas production method, in addition to previously reported data on nutrient composition. Leaf toughness, in general, negatively correlated with the crude protein content, one of the most important nutritional factors affecting food selection by leaf-eating primates...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210795/observational-comparisons-of-intestinal-microbiota-characterizations-immune-enzyme-activities-and-muscle-amino-acid-compositions-of-loach-in-paddy-fields-and-ponds-in-sichuan-province
#4
Song Yang, Yuanliang Duan, Jie Zhang, Jian Zhou, Ya Liu, Jun Du, Liulan Zhao, Zongjun Du, Shuaishuai Han
A balanced intestinal microbial ecosystem is crucial for the growth and health of animals because it can influence the digestion and absorption of nutrients in the intestine. Different culture conditions may change the ecology of microbial in intestine and thus affect the overall growth performance of an animal. In this study, we compared intestinal morphologies, microbiota characterizations, immune enzyme activities, and muscle amino acid compositions of loach cultured in paddy fields and ponds. The fish were fed with the same diets from May 5 to November 5 (2015) in three paddy or ponds...
February 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28162994/thyroid-progenitors-are-robustly-derived-from-embryonic-stem-cells-through-transient-developmental-stage-specific-overexpression-of-nkx2-1
#5
Keri Dame, Steven Cincotta, Alex H Lang, Reeti M Sanghrajka, Liye Zhang, Jinyoung Choi, Letty Kwok, Talitha Wilson, Maciej M Kańduła, Stefano Monti, Anthony N Hollenberg, Pankaj Mehta, Darrell N Kotton, Laertis Ikonomou
The clinical importance of anterior foregut endoderm (AFE) derivatives, such as thyrocytes, has led to intense research efforts for their derivation through directed differentiation of pluripotent stem cells (PSCs). Here, we identify transient overexpression of the transcription factor (TF) NKX2-1 as a powerful inductive signal for the robust derivation of thyrocyte-like cells from mouse PSC-derived AFE. This effect is highly developmental stage specific and dependent on FOXA2 expression levels and precise modulation of BMP and FGF signaling...
February 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28144783/development-of-the-lung
#6
REVIEW
Johannes C Schittny
To fulfill the task of gas exchange, the lung possesses a huge inner surface and a tree-like system of conducting airways ventilating the gas exchange area. During lung development, the conducting airways are formed first, followed by the formation and enlargement of the gas exchange area. The latter (alveolarization) continues until young adulthood. During organogenesis, the left and right lungs have their own anlage, an outpouching of the foregut. Each lung bud starts a repetitive process of outgrowth and branching (branching morphogenesis) that forms all of the future airways mainly during the pseudoglandular stage...
January 31, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28141489/a-chitinase-is-required-for-xylella-fastidiosa-colonization-of-its-insect-and-plant-hosts
#7
Fabien Labroussaa, Michael Ionescu, Adam Zeilinger, Steven Lindow, Rodrigo Almeida
Xylella fastidiosa colonizes the xylem network of host plant species as well as the foregut of required insect vectors to ensure its efficient propagation. Disease management strategies remain inefficient due to a limited comprehension of mechanisms governing both insect and plant colonization. It was previously shown that X. fastidiosa has a functional chitinase (ChiA), and that chitin likely serves as a carbon source for this bacterium. We expand on that research showing that a chiA mutant strain is unable to grow on chitin as the sole carbon source...
January 28, 2017: Microbiology
https://www.readbyqxmd.com/read/28120274/advanced-gi-surgery-training-a-roadmap-for-the-future-the-white-paper-from-the-ssat-task-force-on-advanced-gi-surgery-training
#8
Matthew M Hutter, Kevin E Behrns, Nathaniel J Soper, Fabrizio Michelassi
There is the need for well-trained advanced GI surgeons. The super specialization seen in academic and large community centers may not be applicable for surgeons practicing in other settings. The pendulum that has been swinging toward narrow specialization is swinging the other way, as many trained subspecialists are having a harder time finding positions after fellowship, and if they do find a position, the majority of their practice can actually be advanced GI surgery and not exclusively their area of focused expertise...
January 24, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28097332/effect-of-incentive-spirometry-on-postoperative-hypoxemia-and-pulmonary-complications-after-bariatric-surgery-a-randomized-clinical-trial
#9
Haddon Pantel, John Hwang, David Brams, Thomas Schnelldorfer, Dmitry Nepomnayshy
Importance: The combination of obesity and foregut surgery puts patients undergoing bariatric surgery at high risk for postoperative pulmonary complications. Postoperative incentive spirometry (IS) is a ubiquitous practice; however, little evidence exists on its effectiveness. Objective: To determine the effect of postoperative IS on hypoxemia, arterial oxygen saturation (Sao2) level, and pulmonary complications after bariatric surgery. Design, Setting, and Participants: A randomized noninferiority clinical trial enrolled patients undergoing bariatric surgery from May 1, 2015, to June 30, 2016...
January 11, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28087968/thymic-carcinoma-presenting-with-an-unusual-and-delayed-metastasis-to-the-neural-foramen-mimicking-thoracic-spinal-radiculopathy
#10
H M Low, C F Wong, M W H'ng
We report a case of metastatic thymic carcinoma which presented as an enhancing mass located in the neural foramen of the thoracic spine. More common tumours which arise in the neural foramen would include a neurogenic tumour or developmental anomalies such as a foregut duplication cyst. This case is singular firstly because the lesion present as radiculopathy which mimics a neurogenic tumour. Secondly, the presentation was unusually delayed as the patient presented to our centre more than a decade after the resection of the primary tumour in another institution...
December 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28081130/comparative-ability-of-oropsylla-montana-and-xenopsylla-cheopis-fleas-to-transmit-yersinia-pestis-by-two-different-mechanisms
#11
B Joseph Hinnebusch, David M Bland, Christopher F Bosio, Clayton O Jarrett
BACKGROUND: Transmission of Yersinia pestis by flea bite can occur by two mechanisms. After taking a blood meal from a bacteremic mammal, fleas have the potential to transmit the very next time they feed. This early-phase transmission resembles mechanical transmission in some respects, but the mechanism is unknown. Thereafter, transmission occurs after Yersinia pestis forms a biofilm in the proventricular valve in the flea foregut. The biofilm can impede and sometimes completely block the ingestion of blood, resulting in regurgitative transmission of bacteria into the bite site...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28053664/the-coptotermes-gestroi-aldo-keto-reductase-a-multipurpose-enzyme-for-biorefinery-applications
#12
Robson Tramontina, João Paulo L Franco Cairo, Marcelo V Liberato, Fernanda Mandelli, Amanda Sousa, Samantha Santos, Sarita Cândida Rabelo, Bruna Campos, Jaciane Ienczak, Roberto Ruller, André R L Damásio, Fabio Marcio Squina
BACKGROUND: In nature, termites can be considered as a model biological system for biofuel research based on their remarkable efficiency for lignocellulosic biomass conversion. Redox enzymes are of interest in second-generation ethanol production because they promote synergic enzymatic activity with classical hydrolases for lignocellulose saccharification and inactivate fermentation inhibitory compounds produced after lignocellulose pretreatment steps. RESULTS: In the present study, the biochemical and structural characteristics of the Coptotermes gestroi aldo-keto reductase (CgAKR-1) were comprehensively investigated...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28052057/wnt-%C3%AE-catenin-promotes-gastric-fundus-specification-in-mice-and-humans
#13
Kyle W McCracken, Eitaro Aihara, Baptiste Martin, Calyn M Crawford, Taylor Broda, Julie Treguier, Xinghao Zhang, John M Shannon, Marshall H Montrose, James M Wells
Despite the global prevalence of gastric disease, there are few adequate models in which to study the fundus epithelium of the human stomach. We differentiated human pluripotent stem cells (hPSCs) into gastric organoids containing fundic epithelium by first identifying and then recapitulating key events in embryonic fundus development. We found that disruption of Wnt/β-catenin signalling in mouse embryos led to conversion of fundic to antral epithelium, and that β-catenin activation in hPSC-derived foregut progenitors promoted the development of human fundic-type gastric organoids (hFGOs)...
January 12, 2017: Nature
https://www.readbyqxmd.com/read/28050458/congenital-cystic-adenomatoid-malformation-a-tertiary-care-hospital-experience
#14
Asmita Anilkumar Mehta, Naveen Viswanathan, Anil Kumar Vasudevan, Roopa Paulose, Mohan Abraham
INTRODUCTION: Congenital Cystic Adenomatoid Malformation (CCAM) is an uncommon developmental deformity affecting the terminal respiratory structures. It is characterized by broncho pulmonary foregut malformations. The reason behind it is an arrest in lung development between 4(th) and 7(th) week of fetal life. AIM: The present study was conducted to assess the clinical and radiological profile and also to study the role of surgical intervention in patients with CCAM...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28028750/early-clinical-experience-with-the-da-vinci-xi-surgical-system-in-general-surgery
#15
Monika E Hagen, Minoa K Jung, Frederic Ris, Jassim Fakhro, Nicolas C Buchs, Leo Buehler, Philippe Morel
The da Vinci Xi Surgical System (Intuitive Surgical Inc., Sunnyvale, CA, USA) has been released in 2014 to facilitate minimally invasive surgery. Novel features are targeted towards facilitating complex multi-quadrant procedures, but data is scarce so far. Perioperative data of patients who underwent robotic general surgery with the da Vinci Xi system within the first 6 month after installation were collected and analyzed. The gastric bypass procedures performed with the da Vinci Xi Surgical System were compared to an equal amount of the last procedures with the da Vinci Si Surgical System...
December 27, 2016: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28024525/gut-content-microbiota-of-introduced-bigheaded-carps-hypophthalmichthys-spp-inhabiting-the-largest-shallow-lake-in-central-europe
#16
Andrea K Borsodi, Attila Szabó, Gergely Krett, Tamás Felföldi, András Specziár, Gergely Boros
Studying the microbiota in the alimentary tract of bigheaded carps (Hypophthalmichthys spp.) gained special interest recently, as these types of investigations on non-native fish species may lead to a better understanding of their ecological role and feeding habits in an invaded habitat. For microbiological examinations, bigheaded carp gut contents and water column samples from Lake Balaton (Hungary) were collected from spring to autumn in 2013. Denaturing Gradient Gel Electrophoresis (DGGE) and pyrosequencing of the 16S rRNA gene were performed to reveal the composition...
January 2017: Microbiological Research
https://www.readbyqxmd.com/read/28007661/development-and-stem-cells-of-the-esophagus
#17
REVIEW
Yongchun Zhang, Ming Jiang, Eugene Kim, Sijie Lin, Kuancan Liu, Xiaopeng Lan, Jianwen Que
The esophagus is derived from the anterior portion of the developmental intermediate foregut, a structure that also gives rise to other organs including the trachea, lung, and stomach. Genetic studies have shown that multiple signaling pathways (e.g. Bmp) and transcription factors (e.g. SOX2) are required for the separation of the esophagus from the neighboring respiratory system. Notably, some of these signaling pathways and transcription factors continue to play essential roles in the subsequent morphogenesis of the esophageal epithelium which undergoes a simple columnar-to-stratified squamous conversion...
December 19, 2016: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/27995433/direct-percutaneous-endoscopic-jejunostomy-dpej-tube-placement-a-single-institution-experience-and-outcomes-to-30-days-and-beyond
#18
Andrew T Strong, Gautam Sharma, Matthew Davis, Michael Mulcahy, Suriya Punchai, Colin P O'Rourke, Stacy A Brethauer, John Rodriguez, Jeffrey L Ponsky, Matthew D Kroh
INTRODUCTION: Patients with prior foregut surgery requiring long-term enteral access typically undergo operative jejunostomy tube placement; however, direct percutaneous endoscopic jejunostomy (DPEJ) is a viable alternative. METHODS: All de novo DPEJ procedures performed by surgical and advanced endoscopists from May 2003 to June 2015 were retrospectively reviewed following approval by the Institutional Review Board. There were 59 cases identified. RESULTS: Our cohort had a mean age of 50...
December 19, 2016: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/27993620/characterization-of-putative-virulence-factors-of-serratia-marcescens-strain-sen-for-pathogenesis-in-spodoptera-litura
#19
Chetana Aggarwal, Sangeeta Paul, Vishwas Tripathi, Bishwajeet Paul, Md Aslam Khan
Two Serratia marcescens strains, SEN and ICC-4, isolated from diseased insect cadavers were observed to differ considerably in their virulence towards Spodoptera litura. The present study was aimed to characterize the possible virulence factors present in the virulent Serratia marcescens strain SEN. Both the S. marcescens strains were evaluated for the presence of various lytic enzymes such as chitinase, lipase, protease and phospholipase. The virulent S. marcescens strain SEN was observed to possess considerably higher activity of chitinase and protease enzymes; activity of phospholipase enzyme was also higher...
December 18, 2016: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/27988351/duplication-of-neuropeptide-y-and-peptide-yy-in-nile-tilapia-oreochromis-niloticus-and-their-roles-in-food-intake-regulation
#20
Peipei Yan, Jirong Jia, Guokun Yang, Dongfang Wang, Caiyun Sun, Wensheng Li
In vertebrates, the neuropeptide Y (NPY) family peptides have been recognized as key players in food intake regulation. NPY centrally promotes feeding, while peptide YY (PYY) and pancreatic polypeptide (PP) mediate satiety. The teleost tetraploidization is well-known to generate duplicates of both NPY and PYY; however, the functional diversification between the duplicate genes, especially in the regulation of food intake, remains unknown. In this study, we identified the two duplicates of NPY and PYY in Nile tilapia (Oreochromis niloticus)...
February 2017: Peptides
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