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https://www.readbyqxmd.com/read/28439733/duodenal-involvement-is-an-independent-prognostic-factor-for-patients-with-surgically-resected-pancreatic-ductal-adenocarcinoma
#1
Marco Dal Molin, Amanda L Blackford, Abdulrehman Siddiqui, Aaron Brant, Christy Cho, Neda Rezaee, Jun Yu, Jin He, Matthew Weiss, Ralph H Hruban, Christopher Wolfgang, Michael Goggins
BACKGROUND: The current staging system for pancreatic ductal adenocarcinoma (PDAC) includes information about size and local extension of the primary tumor (T stage). The value of incorporating any local tumor extension into pancreatic staging systems has been questioned because it often is difficult to evaluate tumor extension to the peri-pancreatic soft tissues and because most carcinomas of the head of the pancreas infiltrate the intra-pancreatic common bile duct. This study sought to evaluate the prognostic implications of having PDAC with local tumor extension...
April 24, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28438780/penetration-route-of-the-selective-glucocorticoid-receptor-agonist-sa22465-and-betamethasone-into-rabbit-meibomian-gland-based-on-pharmacokinetics-and-autoradiography
#2
Nagayoshi Asano, Kenji Ueda, Kouichi Kawazu
Meibomian glands are tiny sebaceous glands embedded within specific types of dense connective tissues. This study investigated drug penetration into meibomian glands following a single topical administration in rabbits. We measured time-course concentrations of the selective glucocorticoid receptor agonist (SEGRA) SA22465 and betamethasone in lid margins, palpebral conjunctival epithelium, and meibomian glands following a single instillation using a newly established collection method. We also visualized the distribution of (14)C-SA22465 in eyelid tissue sections using micro-autoradiography...
April 24, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28436085/effect-of-triclosan-on-anuran-development-and-growth-in-a-larval-amphibian-growth-and-development-assay
#3
Douglas J Fort, Michael B Mathis, Sascha Pawlowski, Jeffrey C Wolf, Robert Peter, Samantha Champ
A larval amphibian growth and development assay was performed to evaluate the potential effects of environmentally-relevant concentrations of triclosan (TCS) on amphibian development and growth. Xenopus laevis were exposed to TCS 0.0 (control), 6.3, 12.5 and 25.0 μg l(-1) (estimated maximum tolerable concentration) until 10 weeks post-metamorphosis. At median metamorphosis time (Nieuwkoop and Faber stage 62), five larvae per replicate were collected for snout-vent length, hind limb length and body weight measurements, and histopathological examination of thyroid glands...
April 24, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28428804/morphogenesis-of-honeybee-hypopharyngeal-gland-during-pupal-development
#4
Sascha Peter Klose, Daniel Rolke, Otto Baumann
BACKGROUND: The hypopharyngeal gland of worker bees contributes to the production of the royal jelly fed to queens and larvae. The gland consists of thousands of two-cell units that are composed of a secretory cell and a duct cell and that are arranged in sets of about 12 around a long collecting duct. RESULTS: By fluorescent staining, we have examined the morphogenesis of the hypopharyngeal gland during pupal life, from a saccule lined by a pseudostratified epithelium to the elaborate organ of adult worker bees...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28428722/therapeutic-experience-of-289-elderly-patients-with-biliary-diseases
#5
Zong-Ming Zhang, Zhuo Liu, Li-Min Liu, Chong Zhang, Hong-Wei Yu, Bai-Jiang Wan, Hai Deng, Ming-Wen Zhu, Zi-Xu Liu, Wen-Ping Wei, Meng-Meng Song, Yue Zhao
AIM: To present clinical characteristics, diagnosis and treatment strategies in elderly patients with biliary diseases. METHODS: A total of 289 elderly patients with biliary diseases were enrolled in this study. The clinical data relating to these patients were collected in our hospital from June 2013 to May 2016. Patient age, disease type, coexisting diseases, laboratory examinations, surgical methods, postoperative complications and therapeutic outcomes were analyzed...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28418357/-renal-morphological-changes-in-experimental-oxalate-nephrolithiasis
#6
Yu G Motin, A V Lepilov, P M Larionov
AIM: Тo evaluate renal morphological changes in the early stages of lithogenic processes and during urinary correction of urine with oxalate-chelating compounds (sodium citrate). MATERIAL AND METHODS: An experimental model of oxalate nephrolithiasis was performed on 80 male Wistar rats weighing 180 to 250 g. Rat kidneys were morphologically and ultrastructurally studied. Immunohistochemical techniques were applied to study the features of development of endoplasmic reticulum stress...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/28416441/glechoma-hederacea-extracts-attenuate-cholestatic-liver-injury-in-a-bile-duct-ligated-rat-model
#7
Ya-Yu Wang, Shih-Yi Lin, Wen-Ying Chen, Su-Lan Liao, Chih-Cheng Wu, Pin-Ho Pan, Su-Tze Chou, Chun-Jung Chen
ETHNOPHARMACOLOGICAL RELEVANCE: In traditional Chinese medicine, Glechoma hederacea is frequently prescribed to patients with cholelithiasis, dropsy, abscess, diabetes, inflammation, and jaundice. Polyphenolic compounds are main bioactive components of Glechoma hederacea. AIM OF THE STUDY: This study was aimed to investigate the hepatoprotective potential of hot water extract of Glechoma hederacea against cholestatic liver injury in rats. MATERIALS AND METHODS: Cholestatic liver injury was produced by ligating common bile ducts in Sprague-Dawley rats...
April 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28415167/there-is-no-advantage-to-transpapillary-pancreatic-duct-stenting-for-the-transmural-endoscopic-drainage-of-pancreatic-fluid-collections-a-meta-analysis
#8
Sunil Amin, Dennis J Yang, Aimee L Lucas, Susana Gonzalez, Christopher J DiMaio
Background/Aims: Options for the endoscopic management of symptomatic pancreatic fluid collections (PFCs) include transmural drainage (TM) alone, transpapillary drainage (TP) alone, or a combination of both drainage method (CD). There have been conflicting reports about the best method. This study performed a meta-analysis to determine whether CD presents an added clinical benefit over TM. Methods: The included studies compared TM with CD and reported clinical success for both methods...
April 17, 2017: Clinical Endoscopy
https://www.readbyqxmd.com/read/28409346/development-and-diseases-of-the-collecting-duct-system
#9
Lihe Chen, Paul J Higgins, Wenzheng Zhang
The collecting duct of the mammalian kidney is important for the regulation of extracellular volume, osmolarity, and pH. There are two major structurally and functionally distinct cell types: principal cells and intercalated cells. The former regulates Na(+) and water homeostasis, while the latter participates in acid-base homeostasis. In vivo lineage tracing using Cre recombinase or its derivatives such as CreGFP and CreER(T2) is a powerful new technique to identify stem/progenitor cells in their native environment and to decipher the origins of the tissue that they give rise to...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28409345/growth-factor-regulation-in-the-nephrogenic-zone-of-the-developing-kidney
#10
Leif Oxburgh, Sree Deepthi Muthukrishnan, Aaron Brown
New nephrons are induced by the interaction between mesenchymal progenitor cells and collecting duct tips, both of which are located at the outer edge of the kidney. This leading edge of active nephron induction is known as the nephrogenic zone. Cell populations found within this zone include collecting duct tips, cap mesenchyme cells, pretubular aggregates, nephrogenic zone interstitium, hemoendothelial progenitor cells, and macrophages. The close association of these dynamic progenitor cell compartments enables the intricate and synchronized patterning of the epithelial and the vascular components of the nephron...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28408636/aldosterone-regulates-a-5-variant-sgk1-transcript-via-a-shared-hormone-response-element-in-the-sgk1-5-regulatory-region
#11
Nandita S Raikwar, Christie P Thomas
We previously identified a 5' variant alternate transcript of Sgk1 (Sgk1_v3) encoding an NH2-terminal variant Sgk1 isoform, Sgk1_i3 that, like Sgk1, is expressed in the distal convoluted tubule, connecting tubule and collecting duct and can stimulate epithelial Na(+) transport (Am J Physiol Renal Physiol 303: F1527-F1533, 2012). We now demonstrate that, similar to Sgk1, aldosterone and glucocorticoids stimulate Sgk1_v3 expression in cell lines from the collecting duct and airway epithelia. In mice, short term aldosterone infusion and maneuvers that increase endogenous aldosterone secretion including dietary Na(+) deprivation and K(+) loading increases distal nephron Sgk1_v3 expression in vivo...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28405625/resistance-to-hypertension-mediated-by-intercalated-cells-of-the-collecting-duct
#12
Johannes Stegbauer, Daian Chen, Marcela Herrera, Matthew A Sparks, Ting Yang, Eva Königshausen, Susan B Gurley, Thomas M Coffman
The renal collecting duct (CD), as the terminal segment of the nephron, is responsible for the final adjustments to the amount of sodium excreted in urine. While angiotensin II modulates reabsorptive functions of the CD, the contribution of these actions to physiological homeostasis is not clear. To examine this question, we generated mice with cell-specific deletion of AT1A receptors from the CD. Elimination of AT1A receptors from both principal and intercalated cells (CDKO mice) had no effect on blood pressures at baseline or during successive feeding of low- or high-salt diets...
April 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28405619/role-of-adenylyl-cyclase-6-in-the-development-of-lithium-induced-nephrogenic-diabetes-insipidus
#13
Søren Brandt Poulsen, Tina Bøgelund Kristensen, Heddwen L Brooks, Donald E Kohan, Timo Rieg, Robert A Fenton
Psychiatric patients treated with lithium (Li(+)) may develop nephrogenic diabetes insipidus (NDI). Although the etiology of Li(+)-induced NDI (Li-NDI) is poorly understood, it occurs partially due to reduced aquaporin-2 (AQP2) expression in the kidney collecting ducts. A mechanism postulated for this is that Li(+) inhibits adenylyl cyclase (AC) activity, leading to decreased cAMP, reduced AQP2 abundance, and less membrane targeting. We hypothesized that Li-NDI would not develop in mice lacking AC6. Whole-body AC6 knockout (AC6(-/-)) mice and potentially novel connecting tubule/principal cell-specific AC6 knockout (AC6(loxloxCre)) mice had approximately 50% lower urine osmolality and doubled water intake under baseline conditions compared with controls...
April 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28402281/new-species-of-aberrapex-jensen-2001-cestoda-lecanicephalidea-from-eagle-rays-of-the-genus-myliobatis-cuvier-myliobatiformes-myliobatidae-from-off-argentina
#14
Adriana Menoret, Leonardo Mutti, Veronica A Ivanov
Three new species of Aberrapex Jensen, 2001 (Cestoda: Lecanicephalidea) have been collected from species of Myliobatis Cuvier along the coast of Argentina. Aberrapex ludmilae sp. n. parasitises M. goodei Garman in the San Matías Gulf. This species is unique in a combination of features including the shape and extent of the uterus, scolex size, testis distribution, and by lacking an external seminal vesicle and postovarian vitelline follicles. Aberrapex sanmartini sp. n. from M. goodei in San Blas Bay and A...
April 4, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28399644/effects-of-gonadectomy-and-testosterone-treatment-on-aquaporin-expression-in-the-kidney-of-normotensive-and-hypertensive-rats
#15
Su Yi Loh, Nelli Giribabu, Naguib Salleh
We tested the hypothesis that testosterone-induced increase in blood pressure was due to changes in aquaporin (AQP) expression in kidneys. In this study, expression level of kidney AQPs was investigated under testosterone influence. Adult normotensive Wistar Kyoto (WKY) and hypertensive SHR male and female rats underwent gonadectomy. For female rats, testosterone was given for six weeks duration, two weeks following ovariectomy via subcutaneous silastic implant. Mean arterial pressure (MAP) was measured in all the rats after eight weeks via carotid artery cannulation and the rats were then sacrificed and kidneys were harvested for analyses of AQP-1, 2, 3, 4, 6, and 7 mRNA and protein expressions by quantitative real-time PCR and Western blotting, respectively...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28398963/molecular-evidence-for-monoclonal-skip-progression-in-main-duct-intraductal-papillary-mucinous-neoplasms-of-the-pancreas
#16
Kenjiro Date, Takao Ohtsuka, Takaaki Fujimoto, Koji Tamura, Hideyo Kimura, Taketo Matsunaga, Naoki Mochidome, Tetsuyuki Miyazaki, Yasuhisa Mori, Yoshinao Oda, Masafumi Nakamura, Masao Tanaka
OBJECTIVE: To clarify clonality of distinct multisegmental main duct (MD)-intraductal papillary mucinous neoplasms (IPMNs) using microarray analysis. BACKGROUND: IPMNs represent a pancreatic ductal cell field defect, which causes multiple occurrences of lesions. In addtion, it has been speculated that MD-IPMNs display features of monoclonal skip progression. METHODS: Total RNA was extracted from fresh-frozen tissue samples of metachronous MD-IPMNs and nonneoplastic pancreas tissue from the same pancreas from two individuals, and whole human genome microarray analysis was performed...
May 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28394333/a-heart-brain-kidney-network-controls-adaptation-to-cardiac-stress-through-tissue-macrophage-activation
#17
Katsuhito Fujiu, Munehiko Shibata, Yukiteru Nakayama, Fusa Ogata, Sahohime Matsumoto, Koji Noshita, Shingo Iwami, Susumu Nakae, Issei Komuro, Ryozo Nagai, Ichiro Manabe
Heart failure is a complex clinical syndrome characterized by insufficient cardiac function. In addition to abnormalities intrinsic to the heart, dysfunction of other organs and dysregulation of systemic factors greatly affect the development and consequences of heart failure. Here we show that the heart and kidneys function cooperatively in generating an adaptive response to cardiac pressure overload. In mice subjected to pressure overload in the heart, sympathetic nerve activation led to activation of renal collecting-duct (CD) epithelial cells...
April 10, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28390159/the-natural-history-of-primary-sclerosing-cholangitis-in-781-children-a-multicenter-international-collaboration
#18
Mark R Deneau, Wael El-Matary, Pamela L Valentino, Reham Abdou, Khaled Alqoaer, Mansi Amin, Achiya Z Amir, Marcus Auth, Fateh Bazerbachi, Annemarie Broderick, Albert Chan, Jillian Cotter, Sylvia Doan, Mounif El-Youssef, Federica Ferrari, Katryn N Furuya, Madeleine Gottrand, Frederic Gottrand, Nitika Gupta, Matjaz Homan, M K Jensen, Binita M Kamath, Kyung Mo Kim, Kaija-Leena Kolho, Anastasia Konidari, Bart Koot, Raffaele Iorio, Oren Ledder, Cara Mack, Mercedes Martinez, Tamir Miloh, Parvathi Mohan, Niamh O'Cathain, Alexandra Papadopoulou, Amanda Ricciuto, Lawrence Saubermann, Pushpa Sathya, Eyal Shteyer, Vratislav Smolka, Atushi Tanaka, Raghu Varier, Veena Venkat, Bernadette Vitola, Miriam B Vos, Marek Woynarowski, Jason Yap
BACKGROUND: There are limited data on the natural history of primary sclerosing cholangitis (PSC) in children. We aimed to describe the disease characteristics and long-term outcomes of pediatric PSC. METHODS: We retrospectively collected all pediatric PSC cases from 36 participating institutions and conducted a survival analysis from the date of PSC diagnosis to dates of diagnosis of portal hypertensive or biliary complications, cholangiocarcinoma, liver transplantation, or death...
April 8, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28385120/are-routine-preoperative-liver-function-tests-in-patients-with-uncomplicated-symptomatic-gallstone-disease-necessary
#19
Marijke van den Berg, Gijs M van Couwelaar, Christel A L de Raaff, Sjoerd M Lagarde, Pieter Joosse, Bart A van Wagensveld, Bart C Vrouenraets
BACKGROUND: The aim of this study was to evaluate the value of preoperative liver function tests (LFTs) in patients with uncomplicated gallstone disease and scheduled for laparoscopic cholecystectomy. METHODS: All 1112 patients who underwent a laparoscopic cholecystectomy for symptomatic gallstone disease during a 6-year cohort were retrospectively reviewed. Only patients who presented with uncomplicated disease were selected. Preoperative LFTs, pre-, and postoperative endoscopic retrograde cholangio pancreaticographies (ERCPs) and postoperative complications were collected...
April 7, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28384915/paraneoplastic-glomerulopathy-in-a-case-of-collecting-duct-renal-cell-carcinoma
#20
Srikanth Prasad Devarsetty, Dharshan Rangaswamy, Shailaja Bhat, Shankar Prasad Nagaraju, Ravindra Prabhu Attur
Paraneoplastic glomerulopathy has been described in established cases of the solid tumors of lung, gastrointestinal system, breast, etc., and rarely in patients with Renal Cell Carcinoma (RCC). Studies on secondary glomerular diseases have described a higher incidence of IgA nephropathy in patients with RCC compared to membranous glomerulopathy, which are commonly reported in malignancies of the lung and gastrointestinal tract. Collecting Duct Carcinoma (CDC), a rare high grade adenocarcinoma accounts for <1% of all renal malignancies...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
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