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https://www.readbyqxmd.com/read/28346921/bacterial-colonization-of-the-newborn-gut-immune-development-and-prevention-of-disease
#1
W Allan Walker
We now know that the fetus does not reside in a sterile intrauterine environment but is exposed to commensal bacteria from the maternal gut which cross the placenta and infiltrate the amniotic fluid. This exposure to colonizing bacteria continues at birth and during the first year of life, and it has a profound influence on lifelong health. Why is this important? Cross talk with colonizing bacteria in the developing neonatal intestine helps in the initial adaptation of the infant to extrauterine life, particularly in acquiring immune homeostasis, and provides protection against disease expression (e...
2017: Nestlé Nutrition Institute Workshop Series
https://www.readbyqxmd.com/read/28346874/protective-effects-of-hepatocyte-specific-glycyrrhetic-derivatives-against-carbon-tetrachloride-induced-liver-damage-in-mice
#2
Yifei Yang, Lingyun Yang, Yaodan Han, Zhenwei Wu, Pan Chen, Huibin Zhang, Jinpei Zhou
Glycyrrhetic acid (GA), the main hydrolysate of glycyrrhizic acid extracted from the roots of the Chinese herb Glycyrrhiza glabra, was reported to be accumulated in hepatocytes due to the extensive distribution of GA receptors in liver. A series of hepatocyte-specific derivatives on the basis of anetholtrithione and glycyrrhizic were designed and synthesized. The potential beneficial effect was evaluated in carbon tetrachloride (CCl4)-induced liver injury model. In addition, the hepatoprotective activity of these derivatives was assessed by measuring levels of serum marker enzymes, including serum glutamate oxaloacetate transaminase (GOT), serum glutamate pyruvate transaminase (GPT), alkaline phosphatase (AKP), lactate dehydrogenase (LDH) and the ratio of GSH to GSSG...
March 20, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28346852/preoperative-lymphedema-related-risk-factors-in-early-stage-breast-cancer
#3
Zeynep Erdogan Iyigun, Tomris Duymaz, Ahmet Serkan Ilgun, Gul Alco, Cetin Ordu, Dauren Sarsenov, Ayse Esra Aydin, Filiz Elbuken Celebi, Filiz Izci, Yeşim Eralp, Vahit Ozmen
BACKGROUND: Prolongation of survival in patients with breast cancer due to early diagnosis and modern methods of treatment has turned the attention on lymphedema, which is the most important morbidity secondary to the treatment of the disease. Determination of lymphedema and related risk factors in patients before a surgical intervention may provide protection for patients and early treatment. The aim of this study was to determine the presence of lymphedema before surgery by bioimpedance analysis in patients with breast cancer and to establish risk factors associated with lymphedema...
March 27, 2017: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/28346848/cardiovascular-protective-effects-and-clinical-applications-of-resveratrol
#4
Sanghyun Cho, Kyung Namkoong, Minji Shin, Jueun Park, Eunyeong Yang, Jinsoo Ihm, Vu Thi Thu, Hyoung Kyu Kim, Jin Han
Resveratrol is a naturally occurring phenol that is generated by plant species following injury or attack by bacterial and fungal pathogens. This compound was first described as the French Paradox in 1992. Later in 2003, resveratrol was reported to activate sirtuins in yeast cells. Recent experimental studies have found that resveratrol offers a variety of benefits that include both anticarcinogenic and anti-inflammatory effects in addition to the ability to reverse obesity, attenuate hyperglycemia and hyperinsulinemia, protect heart and endothelial function, and increase the life span...
March 27, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28346847/does-acute-normobaric-hypoxia-induce-anapyrexia-in-adult-humans
#5
Yongsuk Seo, Hayden D Gerhart, Jeremiah Vaughan, Jung-Hyun Kim, Ellen L Glickman
Seo, Yongsuk, Hayden D. Gerhart, Jeremiah Vaughan, Jung-Hyun Kim, and Ellen L. Glickman. Does acute normobaric hypoxia induce anapyrexia in adult humans? High Alt Med Biol 00:000-000, 2017.-Exposure to hypoxia is known to induce a reduction in core body temperature as a protective mechanism, which has been shown in both animals and humans. The purpose of this study was to test if acute exposure to normobaric hypoxia (NH) induces anapyrexia in adult humans in association with decreased peripheral oxygen saturation (SpO2)...
March 27, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28346828/chemical-transformation-of-colloidal-nanostructures-with-morphological-preservation-by-surface-protection-with-capping-ligands
#6
Wenjing Xu, Mingsheng Wang, Zhiwei Li, Xiaojing Wang, Yongqiang Wang, Mingyang Xing, Yadong Yin
When nanocrystals are made to undergo chemical transformations, there are often accompanying large mechanical deformations and changes to overall particle morphology. These effects can constrain development of multi-step synthetic methods through loss of well-defined particle morphology and functionality. Here, we demonstrate a surface protection strategy for solution phase chemical conversion of colloidal nanostructures that allows for preservation of overall particle morphology despite large volume changes...
March 27, 2017: Nano Letters
https://www.readbyqxmd.com/read/28346815/improvement-of-identification-methods-for-honeybee-specific-lactic-acid-bacteria-future-approaches
#7
Sepideh Lamei, Yue O O Hu, Tobias C Olofsson, Anders F Andersson, Eva Forsgren, Alejandra Vásquez
Honeybees face many parasites and pathogens and consequently rely on a diverse set of individual and group-level defenses to prevent disease. The crop microbiota of Apis mellifera, composed of 13 Lactic Acid Bacterial (LAB) species within the genera Lactobacillus and Bifidobacterium, form a beneficial symbiotic relationship with each other and the honeybee to protect their niche and their host. Possibly playing a vital role in honeybee health, it is important that these honeybee specific Lactic Acid Bacterial (hbs-LAB) symbionts can be correctly identified, isolated and cultured, to further investigate their health promoting properties...
2017: PloS One
https://www.readbyqxmd.com/read/28346814/nicotinamide-riboside-a-form-of-vitamin-b3-and-nad-precursor-relieves-the-nociceptive-and-aversive-dimensions-of-paclitaxel-induced-peripheral-neuropathy-in-female-rats
#8
Marta V Hamity, Stephanie R White, Roxanne Y Walder, Mark S Schmidt, Charles Brenner, Donna L Hammond
Injury to sensory afferents may contribute to the peripheral neuropathies that develop after administration of chemotherapeutic agents. Manipulations that increase levels of nicotinamide adenine dinucleotide (NAD) can protect against neuronal injury. This study examined whether nicotinamide riboside (NR), a third form of vitamin B3 and precursor of NAD, diminishes tactile hypersensitivity and place escape-avoidance behaviors in a rodent model of paclitaxel-induced peripheral neuropathy. Female Sprague-Dawley rats received 3 intravenous injections of 6...
January 30, 2017: Pain
https://www.readbyqxmd.com/read/28346793/early-immune-responses-to-marek-s-disease-vaccines
#9
Mohammad Heidari, Dan Wang, Shuhong Sun
Marek's disease virus (MDV), a highly cell-associated lymphotropic α-herpesvirus, is the causative agent of Marek's disease (MD) in domestic chickens. MDV replicates in chicken cells and establishes a latent infection within CD4(+) T cells. Although MD vaccines have been in use for several decades, the exact mechanism of vaccine-induced protection is unclear. It is believed that the innate immune system plays a role in vaccine-induced immunity against pathogenic strains of MDV. To shed light on the possible function of the innate immunity in vaccine-mediated protection, we investigated the effect of vaccination, Rispens/CVI988, on the activation of cellular components of the innate immune system by analyzing the expression pattern of select immune-related genes in the cecal tonsils (CT) and duodenum of two MD-susceptible and MD-resistant chicken lines at 3, 5, and 10 days postvaccination (dpv)...
March 27, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28346789/resolving-ultrafast-photoinduced-deactivations-in-water-solvated-pyrimidine-nucleosides
#10
Ana J Pepino, Javier Segarra-Martí, Artur Nenov, Roberto Improta, Marco Garavelli
For the first time, ultrafast deactivations of photo-excited water-solvated pyrimidine nucleosides are mapped employing hybrid QM(CASPT2)/MM(AMBER) optimizations that account for explicit solvation, sugar effects and dynamically correlated potential energy surfaces. Low energy S1/S0 ring-puckering and ring-opening conical intersections (CIs) are suggested to drive the ballistic coherent sub-ps (<200fs) decays observed in each pyrimidine, the energetics controlling this processes correlating with the lifetimes observed...
March 27, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28346772/tools-in-science
#11
EDITORIAL
Anna Zakrisson, Christine Kronfoth
When talking to non-scientists, it is rather amusing how much the Victorian view of a scientist still lingers. Many people, still view us [scientists] as crazy people working in basements (alright, that might contain some truth), who solve unholy puzzles using tools like beakers with colorful liquids and fuming test tubes. Sometimes, we burst out into euphoric cries of EUREKA when some incomprehensible problem is solved just prior to a minor explosion that causes our hair to stand up in disarray. This article is protected by copyright...
March 27, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28346770/a-core-outcome-set-for-localised-prostate-cancer-effectiveness-trials
#12
Steven MacLennan, Paula R Williamson, Hanneke Bekema, Marion Campbell, Craig Ramsay, James N'Dow, Sara MacLennan, Luke Vale, Philipp Dahm, Nicolas Mottet, Thomas Lam, Paul Abel, Hashim U Ahmed, Gary Akehurst, Robert Almquist, Karl Beck, David Budd, Steven Canfield, James Catto, Philip Cornford, William Cross, Alexander Ewen, Judith Grant, Rakesh Heer, David Hurst, Rob Jones, Roger Kockelbergh, Andrew Mackie, Graham MacDonald, Alan McNeill, Malcolm Mason, Sam McClinton, Duncan McLaren, Hugh Mostafid, Ian Pearce, Linda Pennet, Justine Royle, Hans Schreuder, Grant D Stewart, Henk van der Poel, Kevin Wardlaw, Thomas Wiegel
OBJECTIVE: To develop a core outcome set (COS) applicable for effectiveness trials of all interventions for localised prostate cancer. BACKGROUND: Many treatments exist for localised prostate cancer, although it is unclear which offers the optimal therapeutic ratio. This is confounded by inconsistencies in the selection, definition, measurement and reporting of outcomes in clinical trials. SUBJECTS AND METHODS: A list of 79 outcomes was derived from a systematic review of published localised prostate cancer effectiveness studies and semi-structured interviews with 15 prostate cancer patients...
March 27, 2017: BJU International
https://www.readbyqxmd.com/read/28346767/hormone-replacement-therapy-for-chronic-tinnitus-in-menopausal-women-our-experience-with-13-cases
#13
Jen-Tsung Lai, Chiung-Lin Liu, Tien-Chen Liu
Tinnitus is a common complaint among patients visiting an ENT clinic. It can cause severe annoyance and distress to some patients. Many treatment modalities are available for the management of tinnitus, with different degrees of effectiveness. This article is protected by copyright. All rights reserved.
March 27, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28346766/maternal-thyroid-parameters-in-pregnant-women-with-different-ethnic-backgrounds-do-ethnicity-specific-reference-ranges-improve-the-diagnosis-of-subclinical-hypothyroidism
#14
Flora Veltri, Julie Belhomme, Pierre Kleynen, Lidia Grabczan, Serge Rozenberg, Thierry Pepersack, Kris Poppe
OBJECTIVE: Guidelines on the management of thyroid dysfunction during pregnancy have recently been updated and, for the diagnosis of subclinical hypothyroidism (SCH), a TSH upper reference limit (cutoff) of 4.0 mIU/L has been proposed when no institutional values are available. It is also suggested that serum TSH and thyroid autoimmunity (TAI) may be different according to the ethnic background of the women. We therefore determined the prevalence of TAI and SCH in pregnant women with different ethnic backgrounds and, to define SCH, we used different first trimester TSH upper reference cutoffs (institutional, ethnicity-specific, 2...
March 27, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28346753/association-between-diabetes-mellitus-hyperglycemia-and-peri-implant-diseases-systematic-review-and-meta-analysis
#15
REVIEW
Alberto Monje, Andres Catena, Wenche S Borgnakke
AIM: This systematic review investigates whether hyperglycemia/diabetes mellitus is associated with peri-implant diseases (peri-implant mucositis and peri-implantitis). MATERIALS AND METHODS: Electronic and manual literature searching was conducted. An a priori case definition for peri-implantitis was used as an inclusion criterion to minimize risk of bias. The Newcastle Ottawa Scale was used for quality assessment; random effect models were applied; and results were reported according to the PRISMA Statement...
March 27, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28346746/simultaneous-determination-of-4-hydroxyphenyl-lactic-acid-4-hydroxyphenyl-acetic-acid-and-3-4-hydroxyphenyl-propionic-acid-in-human-urine-by-ultra-high-performance-liquid-chromatography-with-fluorescence-detection
#16
Yongli Yang, Fan Liu, Yiqun Wan
A simple and reliable method was established for simultaneous determination of 4-hydroxyphenyl acetic acid, 4-hydroxyphenyl lactic acid, and 3-4-hydroxyphenyl propionic acid in human urine by high-performance liquid chromatography with fluorescence detection. Solid-phase extraction was used to eliminate the interferences in urine. The separation of three analytes was achieved using a C18 column and a mobile phase formed by a 95:5 v/v mixture of 50 mmol/L ammonium acetate buffer at pH 6.8 that contained 5 mmol/L tetrabutyl ammonium bromide and acetonitrile...
March 27, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28346745/emp10-encodes-a-mitochondrial-ppr-protein-that-affects-the-cis-splicing-of-nad2-intron-1-and-seed-development-in-maize
#17
Manjun Cai, L Shuzhen, Feng Sun, Qin Sun, Hailiang Zhao, Xuemei Ren, Yanxin Zhao, Baocai Tan, Zuxin Zhang, Fazhan Qiu
In higher plants, many mitochondrial genes contain group II-type introns that are removed from RNAs by splicing to produce mature transcripts that are then translated into functional proteins. However, the factors involved in the splicing of mitochondrial introns and their biological functions are not well understood in maize. Here, we isolated an empty pericarp 10 (emp10) mutant and identified the underlying gene by map-based cloning. Emp10 encodes a P-type mitochondria-targeted pentatricopeptide repeat (PPR) protein with 10 PPR motifs...
March 27, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28346737/easl-and-aasld-recommendations-for-the-diagnosis-of-hcc-to-the-test-of-daily-practice
#18
Christophe Aubé, Frederic Oberti, Julie Lonjon, Georges Pageaux, Olivier Seror, Giséle N'Kontchou, Agnes Rode, Sylvie Radenne, Christophe Cassinotto, Julien Vergniol, Ivan Bricault, Vincent Leroy, Maxime Ronot, Laurent Castera, Sophie Michalak, Maxime Esvan, Valérie Vilgrain
AIM: To evaluate the diagnostic performance of CT, MRI, and CEUS alone and in combination, for the diagnosis of HCC between 10 and 30 mm, in a large population of cirrhotic patients. PATIENTS AND METHODS: In a multicentre prospective trial, 442 patients have been enrolled. Within a month CEUS, CT and MRI were performed for all patients. A composite algorithm was defined to obtain the more accurate gold standard. RESULTS: 544 nodules in 381 patients have been retained for the performance analysis...
March 27, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28346736/loss-of-predator-species-not-intermediate-consumers-triggers-rapid-and-dramatic-extinction-cascades
#19
Ian Donohue, Owen L Petchey, Sonia Kéfi, Alexandre Génin, Andrew L Jackson, Qiang Yang, Nessa E O'Connor
Ecological networks are tightly interconnected, such that loss of a single species can trigger additional species extinctions. Theory predicts that such secondary extinctions are driven primarily by loss of species from intermediate or basal trophic levels. In contrast, most cases of secondary extinctions from natural systems have been attributed to loss of entire top trophic levels. Here, we show that loss of single predator species in isolation can, irrespective of their identity or the presence of other predators, trigger rapid secondary extinction cascades in natural communities far exceeding those generally predicted by theory...
March 27, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28346734/when-meta-analysis-fails-a-case-about-stomata
#20
Christian Körner
In a recent paper, Yan et al. (2017) offered a statistical re-assessment of the response of stomata density in leaves to environmental conditions using published data sets, including (pre-)historical time series, environmental gradients and manipulative experiments. The authors arrive at a few trends and they conclude that the issue is complicated, responses vary and there is a need for better research. This meta-analysis, like many previous ones, suffered from insufficient or missing data stratification and employing inappropriate assumptions...
March 27, 2017: Global Change Biology
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