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https://www.readbyqxmd.com/read/28425670/electroencephalographic-patterns-of-lithium-poisoning-a-study-of-the-effect-concentration-relationships-in-the-rat
#1
Anne-Sophie Hanak, Isabelle Malissin, Joël Poupon, Patricia Risède, Lucie Chevillard, Bruno Mégarbane
OBJECTIVES: Lithium overdose may result in encephalopathy and electroencephalographic abnormalities. Three poisoning patterns have been identified based on the ingested dose, previous treatment duration and renal function. Whether the severity of lithium-induced encephalopathy depends on the poisoning pattern has not been established. We designed a rat study to investigate lithium-induced encephalopathy and correlate its severity to plasma, erythrocyte, cerebrospinal fluid and brain lithium concentrations previously determined in rat models mimicking human poisoning patterns...
April 20, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28425144/association-between-endoscopic-findings-related-to-colonic-diverticula-and-bowel-habits-a-multicenter-study-in-japan
#2
Eiji Yamada, Hitoshi Kuriyama, Eri Uchida, Yoriko Murata, Yasuo Hata, Masataka Tagri, Yutaka Isozaki, Hirokazu Oyamada, Yukihiro Ozawa, Takafumi Ito, Akira Mizuki, Masahiko Inamori, Noriaki Manabe, Ken Haruma, Atsushi Nakajima
BACKGROUND: Few studies have shown the associations between colonic diverticula and endoscopic findings such as location, inflammation, number of diverticula, sigmoid colon rigidity and bowel habits. METHODS: We analyzed Japanese subjects who underwent total colonoscopies at six centers in Japan from November 2015 to October 2016. Bowel habits were evaluated using the Gastrointestinal Symptom Rating Scale. Location and number of diverticula, inflammation, and sigmoid colon rigidity were evaluated from endoscopy results...
April 19, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28424872/percutaneous-endoscopic-sigmoidopexy-using-t-fasteners-for-management-of-sigmoid-volvulus
#3
Kevin Tin, Zain A Sobani, Nnaemeka Anyadike, Anna Serur, Ira Mayer, Kadirawel Iswara, Yuriy Tsirlin
BACKGROUND: Sigmoid volvulus (SV) is the third leading cause of large bowel obstruction after colonic neoplasms and diverticular disease. SV has traditionally been managed via endoscopic detorsion and decompression followed by non-emergent surgical resection owing to the high risk of recurrence. Most cases of SV occur in elderly debilitated patients with multiple comorbidities and may not be candidates for surgical resection. Endoscopic sigmoidopexy has been described as an alternative to surgical resection...
April 19, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28424793/a-model-based-meta-analysis-evaluating-gender-differences-on-blood-flow-responses-to-brachial-artery-infusions-of-acetylcholine-albuterol-atp-bradykinin-estradiol-glyceryl-trinitrate-l-nmma-nevibolol-norepinephrine-sodium-nitroprusside-substance-p-and-verapamil
#4
Andy R Eugene
INTRODUCTION: Numerous studies have emerged over the course of several decades describing the properties of drugs eliciting vasodilatory or vasoconstrictor responses in the human vasculature. During drug development, decisions to move forward with testing with a new chemical entity are very costly. To fund or not to fund development, go or no-go, decisions are often limited by efficacy comparisons with the current products on the market. The primary aim of this paper is to use dose-response modeling and simulations to quantify differences in blood flow to Acetylcholine, Albuterol, ATP, Bradykinin, 17β-Estradiol, Glyceryl Trinitrate, L-NMMA, Nevibolol, Norepinephrine, Sodium Nitroprusside, Substance P, and Verapamil...
June 2016: MEDtube Science
https://www.readbyqxmd.com/read/28422825/interdigitating-dendritic-cell-sarcoma-presenting-in-the-sigmoid-colon-mesentery-a-case-report-and-literature-review
#5
Jianguo Zhu, Sheng Su, Jinfa Zhou, Haige Li
RATIONALE: Interdigitating dendritic cell sarcoma (IDCS) is an extremely rare disease. It commonly occurs in middle-aged males and mainly involves the lymph nodes. Pathological examination plays an important role in differentiating from other tumors, but far less published literature focuses on the imaging characteristics of IDCS. PATIENT CONCERNS: Here, we reported a case of IDCS in a 52-year-old male involving the pelvis with medical imaging and pathologic findings...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28418353/-a-change-in-the-expression-of-membrane-associated-proteins-and-cytoplasmic-actin-isoforms-in-the-progression-of-human-colon-tumors
#6
M V Novikova, V A Rybko, A V Kochatkov, N V Khromova, S Yu Bogomazova, V B Dugina, V K Lyadov, P B Kopnin
Tumor progression is a complex process that also involves the restructuring of the actin cytoskeleton and the weakening of intercellular adhesive contacts due to the tumor cells that pass through the epithelial-mesenchymal transition (EMT). AIM: Тo identify correlations between clinical features, risk of progression and/or recurrence of human colon adenocarcinomas (CAC), and EMT-related tumor markers. MATERIAL AND METHODS: Descending colon and sigmoid colon adenocarcinoma samples were examined immunohistochemically...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/28416551/comparative-pharmacodynamics-of-telavancin-and-vancomycin-in-the-neutropenic-murine-thigh-and-lung-infection-models-against-staphylococcus-aureus
#7
Alexander J Lepak, Miao Zhao, David R Andes
The pharmacodynamics of telavancin and vancomycin were compared using neutropenic murine thigh and lung infection models. Four S. aureus strains were included. The telavancin MIC ranged from 0.06 - 0.25 mg/L and vancomycin MIC from 1 - 4 mg/L. Plasma pharmacokinetics of escalating doses (1.25, 5, 20 and 80 mg/kg) of telavancin and vancomycin were linear over the dose range. Epithelial lining fluid (ELF) pharmacokinetics for each drug revealed penetration into the ELF mirrored the percent free fraction (not protein bound) in plasma for each drug...
April 17, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28414996/a-case-of-multiple-synchronous-quadruple-cancers-of-the-stomach-sigmoid-colon-rectum-and-pancreas
#8
Atsushi Nanashima, Tetsuro Tominaga, Takashi Nonaka, Kouki Wakata, Masaki Kunizaki, Shuichi Tobinaga, Yorihisa Sumida, Shigekazu Hidaka, Naoe Kinoshita, Terumitsu Sawai, Takeshi Nagayasu
INTRODUCTION: Multiple primary neoplasms are relatively rare, but their incidence has increased because of aging and improvements in diagnostic imaging. PRESENTATION OF CASE: A 67-year-old man presented with epigastric pain. On upper gastrointestinal endoscopy, an ulcer was seen at the gastric angle, and biopsy showed moderately differentiated adenocarcinoma (AC). Colonoscopy demonstrated a 15-mm lesion in the sigmoid colon and a submucosal lesion in the lower rectum...
April 2, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28414980/fluorescence-and-circular-dichroism-studies-on-the-accessibility-of-tryptophan-residues-and-unfolding-of-a-jacalin-related-%C3%AE-d-galactose-specific-lectin-from-mulberry-morus-indica
#9
Debparna Datta, Musti J Swamy
MLGL (Mulberry Latex Galactose-specific Lectin) is an α-d-galactose binding lectin isolated from the latex of mulberry (Morus indica) tree and contains two tryptophan residues in each of its subunits. The fluorescence emission maximum of native MLGL seen at 326nm shifts to 350nm upon incubation with 6M guanidinium thiocyanate (Gdn.SCN), suggesting that the tryptophans are located inside the hydrophobic core of the protein and become fully exposed upon denaturation. Fluorescence quenching studies revealed that the neutral acrylamide exhibits the highest quenching, with ~33% of total fluorescence in the native protein being quenched at a quencher concentration of 0...
April 1, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28414692/neuronal-fibers-and-neurotransmitter-receptor-expression-in-the-human-endolymphatic-sac
#10
Martin Nue Møller, Svend Kirkeby, Jonas Vikeså, Finn Cilius Nielsen, Per Cayé-Thomasen
INTRODUCTION: Recent studies suggest that the human endolymphatic sac (ES) may have multiple functions, including an ion-transport capacity comparable to the kidney, an immunological capacity and a possible natriuretic capacity. Further, there have been speculations of a yet undefined role in intracranial pressure homeostasis. The anatomical location towards the sigmoid sinus would suggest a possible endo- and/or paracrine signaling. However, neuronal connections may also apply, but it remains very scarcely explored in the human ES...
April 14, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28414658/septic-cerebral-venosinus-thrombosis-secondary-to-an-odontogenic-infection
#11
Hongvan Le, Shane Prejean, Madeleine Heck
BACKGROUND: Cerebral venosinus thrombosis (CVT); is an uncommon, potentially fatal disease that is more common in young adults and children. Thrombophilia, elevated estrogenic states, and infections are the most common risk factors in patients who develop CVT. CASE: A 69-year-old man with a right-sided odontogenic infection presented with fever, headache, opthalmoplegia, and periorbital swelling. Imaging revealed evidence of meningitis and thrombosis of bilateral ophthalmic veins, the cavernous sinus, right internal jugular vein, and sigmoid sinus...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28413300/anorectal-agenesis-with-rectovaginal-fistula-a-rare-regional-variant
#12
Subhasis Roy Choudhury, Niyaz Ahmed Khan, Pinaki Ranjan Debnath, Partap Singh Yadav, Shalu Shah, Rajiv Chadha
AIMS AND OBJECTIVES: The anatomical types of female anorectal malformation (ARM) are complex and include several rare and regional variants. The aim of this report is to highlight the diagnosis and management of cases of anorectal agenesis with rectovaginal fistula (RVF). MATERIALS AND METHODS: This is a retrospective chart review of cases of RVF who underwent definitive surgery between November 2000 and September 2016 in a single institution. RESULTS: Of the 244 female patients with anorectal anomalies treated in our institution over a 16-year period, there were 15 cases of RVF with anorectal agenesis giving it an incidence of 6%...
April 2017: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/28412668/electroporation-of-tissue-and-cells-a-three-equation-model-of-drug-delivery
#13
Finbar Argus, Bradley Boyd, S M Becker
The exposure of the cell membrane to electric pulses of sufficient intensity is known to result in an increased permeability due to the formation of microscopic pores. This is electroporation, and it has been implemented to increase the efficacy of targeted drug delivery. In this study we introduce a novel three-equation model of transport that is able to distinguish the drug uptake in reversibly electroporated cells from that in irreversibly electroporated cells. In order to relate the permeability increases and the cell survival to the local electric field, sigmoidal functions are fit to published experimental data...
April 7, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28412397/caveat-on-the-boltzmann-distribution-function-use-in-biology
#14
REVIEW
Carlos Sevcik
Sigmoid semilogarithmic functions with shape of Boltzmann equations, have become extremely popular to describe diverse biological situations. Part of the popularity is due to the easy availability of software which fits Boltzmann functions to data, without much knowledge of the fitting procedure or the statistical properties of the parameters derived from the procedure. The purpose of this paper is to explore the plasticity of the Boltzmann function to fit data, some aspects of the optimization procedure to fit the function to data and how to use this plastic function to differentiate the effect of treatment on data and to attest the statistical significance of treatment effect on the data...
April 13, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28412271/impact-of-a-new-distal-attachment-on-colonoscopy-performance-in-an-academic-screening-center
#15
Zacharias P Tsiamoulos, Ravi Misra, Rajaratanam Rameshshanker, Timothy R Elliott, Iosif Beintaris, Siwan Thomas-Gibson, Adam Haycock, Noriko Suzuki, Colin Rees, Brian P Saunders
BACKGROUND AND AIMS: Distal attachments placed on the colonoscope tip may positively affect performance by assisting insertion and polyp detection. The Endocuff-original appears to improve adenoma detection rate, but there are no data assessing the performance of the second generation Endocuff-vision. METHODS: A pilot service evaluation study (April-2013/September-2014) was conducted on patients with positive faecal occult blood tests within the National Bowel Cancer Programme during 3 consecutive periods: pre-cuff/no device used, during-cuff/device used and post-cuff/no device used...
April 12, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28411556/hydrogen-peroxide-modifies-both-activity-and-isoforms-of-acetylcholinesterase-in-human-neuroblastoma-sh-sy5y-cells
#16
Alba Garcimartín, M Elvira López-Oliva, M Pilar González, Francisco J Sánchez-Muniz, Juana Benedí
The involvement of cholinergic system and the reactive oxygen species (ROS) in the pathogenesis of some degenerative diseases has been widely reported; however, the specific impact of hydrogen peroxide (H2O2) on the acetylcholinesterase (AChE) activity as well as AChE isoform levels has not been clearly established. Hence, the purpose of present study is to clarify whether H2O2 alters these parameters. Human neuroblastoma SH-SY5Y cells were treated with H2O2 (1-1000µM) for 24h and AChE activity and AChE and cytochrome c levels were evaluated...
April 4, 2017: Redox Biology
https://www.readbyqxmd.com/read/28408995/multiple-zonal-and-multi-zone-adenoma-detection-rates-according-to-quality-of-cleansing-during-colonoscopy
#17
Stefano Pontone, Cesare Hassan, Roberta Maselli, Paolo Pontone, Rita Angelini, Manuela Brighi, Gregorio Patrizi, Daniele Pironi, Fabio Massimo Magliocca, Angelo Filippini
BACKGROUND: The safety and diagnostic accuracy of colonoscopy depend on the quality of colon cleansing. The adenoma detection rate is usually used as a quality measurement score. OBJECTIVE: We aimed to introduce and evaluate three new parameters to determine polyps and adenomas segmental localization and their distribution in association with different bowel preparation levels during colonoscopy. We introduce the multiple adenoma detection rate (the percentage of patients with >2 adenomas diagnosed during colonoscopy), the zonal adenoma detection rate (the percentage of patients with >2 adenomas diagnosed during colonoscopy in different colon areas (rectum, sigmoid, descending, transverse, ascending and cecum colon)), and multi-zone adenoma detection rate (the percentage of patients with >2 adenomas diagnosed during colonoscopy in different colon areas with at least a segment between them with or without lesions (i...
December 2016: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28407804/mathematical-model-of-tgf-%C3%AE-signalling-feedback-coupling-is-consistent-with-signal-switching
#18
Shabnam Khatibi, Hong-Jian Zhu, John Wagner, Chin Wee Tan, Jonathan H Manton, Antony W Burgess
BACKGROUND: Transforming growth factor β (TGF-β) signalling regulates the development of embryos and tissue homeostasis in adults. In conjunction with other oncogenic changes, long-term perturbation of TGF-β signalling is associated with cancer metastasis. Although TGF-β signalling can be complex, many of the signalling components are well defined, so it is possible to develop mathematical models of TGF-β signalling using reduction and scaling methods. The parameterization of our TGF-β signalling model is consistent with experimental data...
April 13, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28404155/survival-outcomes-following-laparoscopic-versus-open-d3-dissection-for-stage-ii-or-iii-colon-cancer-jcog0404-a-phase-3-randomised-controlled-trial
#19
Seigo Kitano, Masafumi Inomata, Junki Mizusawa, Hiroshi Katayama, Masahiko Watanabe, Seiichiro Yamamoto, Masaaki Ito, Shuji Saito, Shoichi Fujii, Fumio Konishi, Yoshihisa Saida, Hirotoshi Hasegawa, Tomonori Akagi, Kenichi Sugihara, Takashi Yamaguchi, Tadahiko Masaki, Yosuke Fukunaga, Kohei Murata, Masazumi Okajima, Yoshihiro Moriya, Yasuhiro Shimada
BACKGROUND: Although benefits of laparoscopic surgery compared with open surgery have been suggested, the long-term survival of patients undergoing laparoscopic surgery for colon cancer requiring Japanese D3 dissection remains unclear. We did a randomised controlled trial to establish non-inferiority of laparoscopic surgery to open surgery. METHODS: We did an open-label, multi-institutional, randomised, two-arm phase 3 trial in 30 hospitals in Japan. Patients aged 20-75 years who had histologically proven colon cancer; tumours located in the caecum or ascending, sigmoid, or rectosigmoid colon; T3 or deeper lesions without involvement of other organs, node stages N0-2, and metastasis stage M0; and tumour size of 8 cm or smaller were included...
April 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28404008/surgery-versus-conservative-management-for-recurrent-and-ongoing-left-sided-diverticulitis-direct-trial-an-open-label-multicentre-randomised-controlled-trial
#20
Bryan J M van de Wall, Marguerite A W Stam, Werner A Draaisma, R Stellato, Willem A Bemelman, Marja A Boermeester, Ivo A M J Broeders, Eric J Belgers, Boudewijn R Toorenvliet, Hubert A Prins, Esther C J Consten
BACKGROUND: Patients with recurrent or persisting complaints after an episode of left-sided diverticulitis are managed with either conservative measures or elective sigmoidectomy. To date, there are no data from randomised trials. We aimed to establish which treatment leads to a better quality of life for patients with diverticulitis. METHODS: We did an open-label, multicentre, randomised controlled trial (DIRECT trial) in 24 teaching and two academic hospitals in the Netherlands...
January 2017: Lancet. Gastroenterology & Hepatology
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