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https://www.readbyqxmd.com/read/29341448/beneficial-actions-of-microbiota-derived-tryptophan-metabolites
#1
REVIEW
J J Galligan
Tryptophan is an important dietary amino acid and it is the precursor for 5-hydroxytryptamine synthesis in the nervous system and by enterochromaffin cells in the gut mucosa. Tryptophan is also metabolized by enzymes in the gut mucosa and also by enzymes produced by the gut microbiome. Diet and the microbiome can contribute to metabolic disease in part by causing intestinal inflammation and increased permeability. In this issue of Neurogastroenterology and Motility, Jennis et al. test the hypothesis that indole tryptophan metabolites produced by gut bacteria might be responsible for the anti-inflammatory and beneficial metabolic effects of the gut microbiome and Roux-en-Y gastric bypass surgery for weight loss by obese patients...
February 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29340677/association-of-bariatric-surgery-using-laparoscopic-banding-roux-en-y-gastric-bypass-or-laparoscopic-sleeve-gastrectomy-vs-usual-care-obesity-management-with-all-cause-mortality
#2
Orna Reges, Philip Greenland, Dror Dicker, Morton Leibowitz, Moshe Hoshen, Ilan Gofer, Laura J Rasmussen-Torvik, Ran D Balicer
Importance: Bariatric surgery is an effective and safe approach for weight loss and short-term improvement in metabolic disorders such as diabetes. However, studies have been limited in most settings by lack of a nonsurgical group, losses to follow-up, missing data, and small sample sizes in clinical trials and observational studies. Objective: To assess the association of 3 common types of bariatric surgery compared with nonsurgical treatment with mortality and other clinical outcomes among obese patients...
January 16, 2018: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29340028/high-resolution-microbiome-profiling-uncovers-fusobacterium-nucleatum-lactobacillus-gasseri-johnsonii-and-lactobacillus-vaginalis-associated-to-oral-and-oropharyngeal-cancer-in-saliva-from-hpv-positive-and-hpv-negative-patients-treated-with-surgery-and-chemo
#3
Rafael Guerrero-Preston, James Robert White, Filipa Godoy-Vitorino, Arnold Rodríguez-Hilario, Kelvin Navarro, Herminio González, Christina Michailidi, Anne Jedlicka, Sierra Canapp, Jessica Bondy, Amanda Dziedzic, Barbara Mora-Lagos, Gustavo Rivera-Alvarez, Carmen Ili-Gangas, Priscilla Brebi-Mieville, William Westra, Wayne Koch, Hyunseok Kang, Luigi Marchionni, Young Kim, David Sidransky
Microbiome studies show altered microbiota in head and neck squamous cell carcinoma (HNSCC), both in terms of taxonomic composition and metabolic capacity. These studies utilized a traditional bioinformatics methodology, which allows for accurate taxonomic assignment down to the genus level, but cannot accurately resolve species level membership. We applied Resphera Insight, a high-resolution methodology for 16S rRNA taxonomic assignment that is able to provide species-level context in its assignments of 16S rRNA next generation sequencing (NGS) data...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339445/bile-acids-in-glucose-metabolism-in-health-and-disease
#4
REVIEW
Hagit Shapiro, Aleksandra A Kolodziejczyk, Daniel Halstuch, Eran Elinav
Bile acids (BAs) are cholesterol-derived metabolites that facilitate the intestinal absorption and transport of dietary lipids. Recently, BAs also emerged as pivotal signaling molecules controlling glucose, lipid, and energy metabolism by binding to the nuclear hormone farnesoid X receptor (FXR) and Takeda G protein receptor 5 (TGR5) in multiple organs, leading to regulation of intestinal incretin secretion, hepatic gluconeogenesis, glycogen synthesis, energy expenditure, inflammation, and gut microbiome configuration...
January 16, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29339031/resolution-of-type-2-diabetes-after-sleeve-gastrectomy-a-2-step-hypothesis
#5
Federico Sista, Valentina Abruzzese, Marco Clementi, Stefano Guadagni, Laura Montana, Sergio Carandina
BACKGROUND: Weight loss (WL) and altered gut hormonal levels are involved in glucose homeostasis after laparoscopic sleeve gastrectomy (LSG). OBJECTIVES: The aim of this study was to evaluate the time-related effects of WL, ghrelin, and glucacon-like peptide-1 (GLP-1) plasma concentrations on type 2 diabetes resolution after LSG. SETTING: University hospital, Italy. METHODS: Ninety-one patients who underwent LSG were investigated...
December 14, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29338386/estrogen-estrogen-receptor-%C3%AE-signaling-facilitates-bilirubin-metabolism-in-regenerating-liver-through-regulating-cytochrome-p450-2a6-expression
#6
Ta-Lun Kao, Yao-Li Chen, Yu-Ping Kuan, Wei-Chun Chang, Yu-Chen Ho, Shuyuan Yeh, Long-Bin Jeng, Wen-Lung Ma
BACKGROUND: After living donor liver transplantation (LDLT), rising serum bilirubin levels commonly indicate insufficient numbers of hepatocytes are available to metabolize bilirubin into biliverdin. Recovery of bilirubin levels is an important marker of hepatocyte repopulation after LDLT. Cytochrome P450 (CYP) 2A6 in humans (or cyp2a4 in rodents) can function as "bilirubin oxidase." Functional hepatocytes contain abundant CYP2A6, which is considered a marker for hepatocyte function recovery...
November 2017: Cell Transplantation
https://www.readbyqxmd.com/read/29337705/how-does-metabolic-surgery-work-its-magic-new-evidence-for-gut-microbiota
#7
Bailey C E Peck, Randy J Seeley
PURPOSE OF REVIEW: Metabolic surgery is recommended for the treatment of type 2 diabetes for its potent ability to improve glycemic control. However, the mechanisms underlying the beneficial effects of metabolic surgery are still under investigation. We provide an updated review of recent studies into the molecular underpinnings of metabolic surgery, focusing in on what is known about the role of gut microbiota. Over the last 7 years several reports have been published on the topic, however the field is expanding rapidly...
January 13, 2018: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/29336226/identifying-metrics-before-and-after-readmission-following-head-and-neck-surgery-and-factors-affecting-readmission-rate
#8
Sidharth V Puram, Neil Bhattacharyya
Objectives Determine nationally representative readmission rates after head and neck cancer (HNCA) surgery and factors associated with readmission. Study Design Cross-sectional analysis of admissions database. Methods The 2013 Nationwide Readmissions Database was analyzed for HNCA surgery admissions and subsequent readmission within 30 days. The readmission rate, length of stay (LOS), disposition, mortality rate, and total charges were determined. Diagnoses and procedures upon readmission were quantified. Factors that were associated with readmission were determined...
January 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29332196/bioelectronic-modulation-of-carotid-sinus-nerve-activity-in-the-rat-a-potential-therapeutic-approach-for-type-2-diabetes
#9
Joana F Sacramento, Daniel J Chew, Bernardete F Melo, Matteo Donegá, Wesley Dopson, Maria P Guarino, Alison Robinson, Jesus Prieto-Lloret, Sonal Patel, Bradley J Holinski, Nishan Ramnarain, Victor Pikov, Kristoffer Famm, Silvia V Conde
AIMS/HYPOTHESIS: A new class of treatments termed bioelectronic medicines are now emerging that aim to target individual nerve fibres or specific brain circuits in pathological conditions to repair lost function and reinstate a healthy balance. Carotid sinus nerve (CSN) denervation has been shown to improve glucose homeostasis in insulin-resistant and glucose-intolerant rats; however, these positive effects from surgery appear to diminish over time and are heavily caveated by the severe adverse effects associated with permanent loss of chemosensory function...
January 14, 2018: Diabetologia
https://www.readbyqxmd.com/read/29331535/estrogen-deprivation-aggravates-cardiometabolic-dysfunction-in-obese-insulin-resistant-rats-through-the-impairment-of-cardiac-mitochondrial-dynamics
#10
Wanitchaya Minta, Siripong Palee, Duangkamol Mantor, Wissuta Sutham, Thidarat Jaiwongkum, Sasiwan Kerdpoo, Wasana Pratchayasakul, Sirinart Kumfu, Siriporn C Chattipakorn, Nipon Chattipakorn
The incidence of cardiovascular disease and metabolic syndrome increases after the onset of menopause, suggesting estrogen has a vital role in their prevention. Mitochondrial dynamics are known to play an important role in the maintenance of cardiac physiological function. However, the effects of estrogen deprivation on cardiometabolic status and cardiac mitochondrial dynamics under conditions of obese-insulin resistance have never been investigated. We hypothesized that estrogen deprivation aggravates cardiac dysfunction through increased cardiac mitochondrial fission in obese-insulin resistant rats...
January 10, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29331524/strategies-and-technical-challenges-for-imaging-oligometastatic-disease-recommendations-from-the-european-organisation-for-research-and-treatment-of-cancer-imaging-group
#11
REVIEW
Nandita M deSouza, Yan Liu, Arturo Chiti, Daniela Oprea-Lager, Géraldine Gebhart, Bernard E Van Beers, Ken Herrmann, Frederic E Lecouvet
Patients with oligometastatic disease (OMD) often have controllable symptoms, and cures are possible. Technical improvements in surgery and radiotherapy have introduced the option of metastasis-directed ablative therapies as an adjunct or alternative to standard-of-care systemic therapies. Several clinical trials and registries are investigating the benefit of these therapeutic approaches across several cancer sites. This requires that patients are correctly included and followed with appropriate imaging. This article discusses the evidence and offers recommendations for the implementation of standard-of-care (Response Evaluation Criteria in Solid Tumours measurements on computed tomography [CT], magnetic resonance imaging [MRI] and bone scintigraphy) and advanced imaging modalities (functional, metabolic and radionuclide targeted) for identifying and following up patients with OMD...
January 10, 2018: European Journal of Cancer
https://www.readbyqxmd.com/read/29331302/bone-matrix-microdamage-and-vascular-changes-characterize-bone-marrow-lesions-in-the-subchondral-bone-of-knee-osteoarthritis
#12
Dzenita Muratovic, David M Findlay, Flavia M Cicuttini, Anita E Wluka, Yea-Rin Lee, Julia S Kuliwaba
INTRODUCTION: Bone marrow lesions (BMLs) in the subchondral bone in osteoarthritis (OA) are suggested to be multifactorial, although the pathogenic mechanisms are unknown. Bone metabolism and cardiovascular risk factors associate with BML in epidemiologic studies. However, there are no studies at the tissue level investigating the relationship between these processes and BML. The aim of this study was to investigate the relationship between BMLs in the tibial plateau (TP) of knee OA and bone matrix microdamage, osteocyte density and vascular changes...
January 10, 2018: Bone
https://www.readbyqxmd.com/read/29330835/international-guidelines-for-groin-hernia-management
#13
(no author information available yet)
INTRODUCTION: Worldwide, more than 20 million patients undergo groin hernia repair annually. The many different approaches, treatment indications and a significant array of techniques for groin hernia repair warrant guidelines to standardize care, minimize complications, and improve results. The main goal of these guidelines is to improve patient outcomes, specifically to decrease recurrence rates and reduce chronic pain, the most frequent problems following groin hernia repair. They have been endorsed by all five continental hernia societies, the International Endo Hernia Society and the European Association for Endoscopic Surgery...
January 12, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29330678/-quality-indicators-with-reference-values-and-threshold-limits-in-general-and-visceral-surgery-for-obesity-and-metabolic-pancreatic-colon-carcinoma-and-rectal-carcinoma-surgery
#14
EDITORIAL
H J Buhr, J Hardt, C Klinger, F Seyfried, A Wiegering, A Dietrich, D K Bartsch, D Lorenz, S Post, C T Germer, T Keck, U Wellner
No abstract text is available yet for this article.
January 2018: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/29330550/a-metabolomics-pilot-study-on-desmoid-tumors-and-novel-drug-candidates
#15
Kelly A Mercier, Mushriq Al-Jazrawe, Raymond Poon, Zachery Acuff, Benjamin Alman
Desmoid tumors (aggressive fibromatosis) are locally invasive soft tissue tumors that lack the ability to metastasize. There are no directed therapies or standard treatment plan, and chemotherapeutics, radiation, and surgery often have temporary effects. The majority of desmoid tumors are related to T41A and S45F mutations of the beta-catenin encoding gene (CTNNB1). Using broad spectrum metabolomics, differences were investigated between paired normal fibroblast and desmoid tumor cells from affected patients...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29329947/-pseudoexfoliation-syndrome-and-pseudoexfoliation-glaucoma
#16
REVIEW
C Schweitzer
Pseudoexfoliation syndrome is an age-related systemic disease that mainly affects the anterior structures of the eye. Despite a worldwide distribution, reported incidence and prevalence of this syndrome vary widely between ethnicities and geographical areas. The exfoliative material is composed mainly of abnormal cross-linked fibrils that accumulate progressively in some organs such as the heart, blood vessels, lungs or meninges, and particularly in the anterior structures of the eye. The exact pathophysiological process still remains unclear but the association of genetic and environmental factors are thought to play a role in the development and progressive extracellular accumulation of exfoliative material...
January 9, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29322269/prognostic-value-of-simultaneous-18f-fdg-pet-mri-using-a-combination-of-metabolo-volumetric-parameters-and-apparent-diffusion-coefficient-in-treated-head-and-neck-cancer
#17
Yong-Il Kim, Gi Jeong Cheon, Seo Young Kang, Jin Chul Paeng, Keon Wook Kang, Dong Soo Lee, June-Key Chung
BACKGROUND: The aim of this study was to determine the usefulness of combined positron emission tomography (PET)/magnetic resonance imaging (MRI) parameters provided by simultaneous 18F-fluorodeoxyglucose (FDG) PET/MRI for the prediction of treatment failure in surgically resected head and neck cancer. We hypothesized that PET parameters corrected by tumor cellularity (combined PET/MRI parameters) could predict the prognosis. On regional PET, maximum standardized uptake value (SUVmax) was measured as metabolic parameters...
January 10, 2018: EJNMMI Research
https://www.readbyqxmd.com/read/29322026/the-pgris-and-parathyroid-splinting-concepts-for-the-analysis-and-prognosis-of-protracted-hypoparathyroidism
#18
Antonio Sitges-Serra
Most patients with hypocalcemia after total thyroidectomy will recover the parathyroid function in a few weeks, but some 20-30% of them will still be in the need for replacement therapy one month after surgery and about 5-10% of those will develop permanent hypoparathyroidism. Although postoperative hypocalcemia has been related to several demographic and metabolic causes, parathyroid hormone (PTH) decline, resulting from autotransplantation, inadvertent excision or devascularization of the parathyroid glands, is the common final pathway...
December 2017: Gland Surgery
https://www.readbyqxmd.com/read/29321650/rna-seq-analysis-and-comparison-of-corneal-epithelium-in-keratoconus-and-myopia-patients
#19
Jingjing You, Susan M Corley, Li Wen, Chris Hodge, Roland Höllhumer, Michele C Madigan, Marc R Wilkins, Gerard Sutton
Keratoconus is a common degenerative corneal disease that can lead to significant visual morbidity, and both genetic and environmental factors have been implicated in its pathogenesis. We compared the transcriptome of keratoconus and control epithelium using RNA-Seq. Epithelial tissues were obtained prior to surgery from keratoconus and myopia control patients, undergoing collagen cross-linking and photorefractive keratectomy, respectively. We identified major differences in keratoconus linked to cell-cell communication, cell signalling and cellular metabolism...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29321129/novel-reversible-model-of-atherosclerosis-and-regression-using-oligonucleotide-regulation-of-the-ldl-receptor
#20
Debapriya Basu, Yunying Hu, Lesley-Ann Huggins, Adam E Mullick, Mark J Graham, Tomasz A Wietecha, Shelley L Barnhart, Allison Mogul, Katharina Pfeiffer, Andreas Zirlik, Edward A Fisher, Karin E Bornfeldt, Florian Willecke, Ira J Goldberg
Rationale: Animal models have been used to explore factors that regulate atherosclerosis. More recently, they have been used to study the factors that promote loss of macrophages and reduction in lesion size after lowering of plasma cholesterol levels. However, current animal models of atherosclerosis regression require challenging surgeries, time-consuming breeding strategies, and/or methods that block liver lipoprotein secretion. Objective: We sought to develop a more direct and time-effective method to create and then reverse hypercholesterolemia as well as atherosclerosis via transient knockdown of the hepatic LDL receptor (LDLR) followed by its rapid restoration...
January 10, 2018: Circulation Research
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