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https://www.readbyqxmd.com/read/28719764/surgical-anatomy-does-not-affect-the-progression-of-intestinal-failure-associated-liver-disease-in-neonatal-piglets
#1
Celeste M Lavallee, Pamela R Wizzard, Marihan Lansing, Donna F Vine, Patrick N Nation, Jason Y Yap, Benjamin P Willing, Paul W Wales, Justine M Turner
BACKGROUND: Intestinal failure-associated liver disease (IFALD) causes significant morbidity in neonates with short bowel syndrome (SBS) dependent on parenteral nutrition (PN). Resected ileum, with loss of the ileocecal valve (ICV), is the most common anatomy in SBS, yet its impact on IFALD has not been adequately studied. METHODS: Neonatal piglets were randomized to 75% intestinal resection with jejunocolic anastomosis (JC, n = 12), 75% resection with jejunoileal anastomosis and intact ICV (JI, n = 13), PN-fed sham (sham, n = 14), or sow-fed control (SF, n = 8)...
July 1, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28719406/toward-a-biopsychosocial-ecology-of-the-human-microbiome-brain-gut-axis-and-health
#2
Karl J Maier, Mustafa al'Absi
OBJECTIVE: Rapidly expanding insights to the human microbiome and health suggest that Western medicine is poised for significant evolution, or perhaps revolution - this while the field continues on a trajectory from reductionism to a biopsychosocial (BPS) paradigm recognizing biological, psychological, and social influences on health. The apparent sensitivity of the microbiota to perturbations across BPS domains suggests that a broad and inclusive framework is needed to develop applicable knowledge in this area...
July 18, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28719336/infant-nutritional-status-feeding-practices-enteropathogen-exposure-socioeconomic-status-and-illness-are-associated-with-gut-barrier-function-as-assessed-by-the-lactulose-mannitol-test-in-the-mal-ed-birth-cohort
#3
Gwenyth O Lee, Benjamin J J McCormick, Jessica C Seidman, Margaret N Kosek, Rashidul Haque, Maribel Paredes Olortegui, Aldo A M Lima, Zulfiqar A Bhutta, Gagandeep Kang, Amidou Samie, Caroline Amour, Carl J Mason, Tahmeed Ahmed, Pablo Peñataro Yori, Domingos B Oliveira, Didar Alam, Sudhir Babji, Pascal Bessong, Estomih Mduma, Sanjaya K Shrestha, Ramya Ambikapathi, Dennis R Lang, Michael Gottlieb, Richard L Guerrant, Laura E Caulfield, For The Mal-Ed Network Investigators
The lactulose mannitol (LM) dual sugar permeability test is the most commonly used test of environmental enteropathy in developing countries. However, there is a large but conflicting literature on its association with enteric infection and host nutritional status. We conducted a longitudinal cohort using a single field protocol and comparable laboratory procedures to examine intestinal permeability in multiple, geographically diverse pediatric populations. Using a previously published systematic review to guide the selection of factors potentially associated with LM test results, we examined the relationships between these factors and mucosal breach, represented by percent lactulose excretion; absorptive area, represented by percent mannitol excretion; and gut barrier function, represented by the L/M ratio...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719267/comparison-of-cytokine-responses-in-ecuadorian-children-infected-with-giardia-ascaris-or-both-parasites
#4
Jill Weatherhead, Andrea Arévalo Cortés, Carlos Sandoval, Maritza Vaca, Martha Chico, Sophia Loor, Philip J Cooper, Rojelio Mejia
AbstractMore than 2 billion people are infected with parasites globally, and the majority have coinfections. Intestinal protozoa and helminths induce polarizing CD4(+) T-helper cell 1 (Th1) mediated cytokine responses within the host. Such immune polarization may inhibit the ability of the host to mount an adequate immune response for pathogen clearance to concurrent pathogens. The current study evaluated the plasma cytokine profile in Ascaris and Giardia coinfected children compared with Giardia- and Ascaris-only infected children...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719264/the-human-microbiome-in-the-fight-against-tuberculosis
#5
Madeleine R Wood, Elaine A Yu, Saurabh Mehta
AbstractThe human microbiome is an intriguing potentially modifiable risk factor in our arsenal against Mycobacterium tuberculosis, the leading infectious disease killer globally. Previous studies have shown associations between the human microbiome and pulmonary disease states; however, etiological links between the microbiome and tuberculosis (TB) infection or disease remain unclear. Immunomodulatory roles of the microbiome may prove to be a critical asset in the host response against TB, including in preventing TB infection, reducing progression from latency, mitigating disease severity, and lowering the incidence of drug resistance and coinfections...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28718983/multimodality-image-guided-cryoablation-for-inoperable-tumor-induced-osteomalacia
#6
Sri Harsha Tella, Hayet Amalou, Bradford J Wood, Richard Chang, Clara C Chen, Cemre Robinson, Michelle Millwood, Guthrie Lori, Sheng Xu, Elliot Levy, Venkatesh Krishnasamy, Rachel I Gafni, Michael T Collins
Tumor-induced osteomalacia (TIO) is a debilitating paraneoplastic condition caused by small phosphaturic mesenchymal tumors (PMTs) that secrete large amounts of the phosphate- and vitamin D-regulating hormone, FGF23. Tumor removal results in cure. However, due to high perioperative comorbidity, either from tumor location or host factors, surgery is sometimes not an option. Tumor destruction via cryoablation may be an effective option for inoperable PMTs. Three subjects with a confirmed diagnosis of TIO were studied...
July 18, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28718980/an-endogenous-dna-adduct-as-a-prognostic-biomarker-for-hepatocarcinogenesis-and-its-prevention-by-theaphenon-e-in-mice
#7
Ying Fu, Shana Silverstein, Justine N McCutcheon, Marcin Dyba, Raghu G Nath, Monika Aggarwal, Heidi Coia, Angela Bai, Jishen Pan, Jiji Jiang, Bhaskar Kallakury, Hongkun Wang, Yu-Wen Zhang, Giuseppe Giaccone, Aiwu Ruth He, Fung-Lung Chung
Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related deaths worldwide, mainly because of its poor prognosis. A valid mechanism-based prognostic biomarker is urgently needed. γ-hydroxy-1,N(2) -propanodeoxyguanosine (γ-OHPdG) is an endogenously formed mutagenic DNA adduct derived from lipid peroxidation (LPO). We examined the relationship of γ-OHPdG with hepatocarcinogenesis in two animal models and its potential role as a prognostic biomarker for recurrence in HCC patients. Bioassays were conducted in the Xeroderma pigmentosum group A knockout mice (Xpa(-/-) ), and the diethylnitrosamine (DEN)-injected mice, both prone to HCC development...
July 18, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28718976/low-density-lipopolyprotein-inhibits-flavivirus-acquisition-in-aedes-aegypti
#8
Z L Wagar, M O Tree, M C Mpoy, M J Conway
Aedes aegypti is the primary vector of a number of human pathogens including dengue virus (DENV) and Zika virus (ZIKV). Ae. aegypti acquires these viruses during the processing of bloodmeals obtained from an infected vertebrate host. Vertebrate blood contains a number of factors that have the potential to modify virus acquisition in the mosquito. Interestingly, low density lipopolyprotein (LDL) levels are decreased during severe DENV infection. Accordingly, we hypothesized that LDL is a modifiable factor that can influence flavivirus acquisition in the mosquito...
July 18, 2017: Insect Molecular Biology
https://www.readbyqxmd.com/read/28718795/novel-molecular-insights-about-lactobacillar-sortase-dependent-piliation
#9
REVIEW
Ingemar von Ossowski
One of the more conspicuous structural features that punctuate the outer cell surface of certain bacterial Gram-positive genera and species is the sortase-dependent pilus. As these adhesive and variable-length protrusions jut outward from the cell, they provide a physically expedient and useful means for the initial contact between a bacterium and its ecological milieu. The sortase-dependent pilus displays an elongated macromolecular architecture consisting of two to three types of monomeric protein subunits (pilins), each with their own specific function and location, and that are joined together covalently by the transpeptidyl activity of a pilus-specific C-type sortase enzyme...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28717640/lung-microbiome-and-host-immune-tone-in-subjects-with-idiopathic-pulmonary-fibrosis-treated-with-inhaled-interferon-%C3%AE
#10
Jing Wang, Melissa Lesko, Michelle H Badri, Bianca C Kapoor, Benjamin G Wu, Yonghua Li, Gerald C Smaldone, Richard Bonneau, Zachary D Kurtz, Rany Condos, Leopoldo N Segal
Therapies targeting inflammation reveal inconsistent results in idiopathic pulmonary fibrosis (IPF). Aerosolised interferon (IFN)-γ has been proposed as a novel therapy. Changes in the host airway microbiome are associated with the inflammatory milieu and may be associated with disease progression. Here, we evaluate whether treatment with aerosolised IFN-γ in IPF impacts either the lower airway microbiome or the host immune phenotype. Patients with IPF who enrolled in an aerosolised IFN-γ trial underwent bronchoscopy at baseline and after 6 months...
July 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28717638/spatial-patterns-and-impacts-of-environmental-and-climatic-factors-on-canine-sinonasal-aspergillosis-in-northern-california
#11
Monise Magro, Jane Sykes, Polina Vishkautsan, Beatriz Martínez-López
Sinonasal aspergillosis (SNA) causes chronic nasal discharge in dogs and has a worldwide distribution, although most reports of SNA in North America originate from the western USA. SNA is mainly caused by Aspergillus fumigatus, a ubiquitous saprophytic filamentous fungus. Infection is thought to follow inhalation of spores. SNA is a disease of the nasal cavity and/or sinuses with variable degrees of local invasion and destruction. While some host factors appear to predispose to SNA (such as belonging to a dolichocephalic breed), environmental risk factors have been scarcely studied...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28717591/nectar-living-yeasts-of-a-tropical-host-plant-community-diversity-and-effects-on-community-wide-floral-nectar-traits
#12
Azucena Canto, Carlos M Herrera, Rosalina Rodriguez
We characterize the diversity of nectar-living yeasts of a tropical host plant community at different hierarchical sampling levels, measure the associations between yeasts and nectariferous plants, and measure the effect of yeasts on nectar traits. Using a series of hierarchically nested sampling units, we extracted nectar from an assemblage of host plants that were representative of the diversity of life forms, flower shapes, and pollinator types in the tropical area of Yucatan, Mexico. Yeasts were isolated from single nectar samples; their DNA was identified, the yeast cell density was estimated, and the sugar composition and concentration of nectar were quantified using HPLC...
2017: PeerJ
https://www.readbyqxmd.com/read/28717398/preclinical-evaluation-of-nf-%C3%AE%C2%BAb-triggered-dendritic-cells-expressing-the-viral-oncogenic-driver-of-merkel-cell-carcinoma-for-therapeutic-vaccination
#13
Kerstin F Gerer, Michael Erdmann, Sine R Hadrup, Rikke Lyngaa, Lena-Marie Martin, Reinhard E Voll, Beatrice Schuler-Thurner, Gerold Schuler, Niels Schaft, Stefanie Hoyer, Jan Dörrie
BACKGROUND: Merkel cell carcinoma (MCC) is a rare but very aggressive skin tumor that develops after integration of a truncated form of the large T-antigen (truncLT) of the Merkel cell polyomavirus (MCV) into the host's genome. Therapeutic vaccination with dendritic cells (DCs) loaded with tumor antigens is an active form of immunotherapy, which intends to direct the immune system towards tumors which express the respective vaccination antigens. METHODS: Cytokine-matured monocyte-derived DCs of healthy donors and MCC patients were electroporated with mRNA encoding the truncLT...
July 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/28717359/the-c-terminal-effector-domain-of-non-structural-protein-1-of-influenza-a-virus-blocks-ifn-%C3%AE-production-by-targeting-tnf-receptor-associated-factor-3
#14
Wei Qian, Xiaoqin Wei, Kelei Guo, Yongtao Li, Xian Lin, Zhong Zou, Hongbo Zhou, Meilin Jin
Influenza A virus non-structural protein 1 (NS1) antagonizes interferon response through diverse strategies, particularly by inhibiting the activation of interferon regulatory factor 3 (IRF3) and IFN-β transcription. However, the underlying mechanisms used by the NS1 C-terminal effector domain (ED) to inhibit the activation of IFN-β pathway are not well understood. In this study, we used influenza virus subtype of H5N1 to demonstrate that the NS1 C-terminal ED but not the N-terminal RNA-binding domain, binds TNF receptor-associated factor 3 (TRAF3)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28717056/infection-with-paragonimuswestermani-of-boar-hunting-dogs-in-western-japan-maintained-via-artificial-feeding-with-wild-boar-meat-by-hunters
#15
Takao Irie, Yohei Yamaguchi, Pham Ngoc Doanh, Zhi Hong Guo, Shigehisa Habe, Yoichiro Horii, Nariaki Nonaka
Infection of boar-hunting dogs with Paragonimus westermani was investigated in Western Japan. Blood and rectal feces were collected from 441 dogs in the three districts (205 in Kinki, 131 in Chugoku, and 105 in Shikoku District). In a screening ELISA for serum antibody against P. westermani antigen, 195 dogs (44.2%) showed positive reaction. In the 195 dogs, 8 dogs were found excreting P. westermani eggs after molecular analysis of fecal eggs and additional 7 were identified serologically for the parasite infection because of their stronger reactivity against P...
July 14, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28717003/surface-toll-like-receptor-3-expression-in-metastatic-intestinal-epithelial-cells-induces-inflammatory-cytokine-production-and-promotes-invasiveness
#16
Marit Bugge, Bjarte Bergstrom, Oda Kamilla Eide, Helene Solli, Ingrid F Kjønstad, Jørgen Stenvik, Terje Espevik, Nadra J Nilsen
Toll-like receptors (TLR)s are innate immune receptors for sensing microbial molecules and damage-associated molecular patterns released from host cells. Double-stranded RNA and the synthetic analog polyinosinic:polycytidylic acid (Poly(I:C)) bind and activate TLR3. This stimulation leads to recruitment of the adaptor molecule TRIF and activation of the transcription factors nuclear factor κB (NF-κB) and interferon regulatory factor 3 (IRF-3), classically inducing IFNβ production. Here, we report that unlike non-metastatic intestinal epithelial cells (IECs), metastatic IECs express TLR3, and that TLR3 promotes invasiveness of these cells...
July 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28716402/the-role-of-low-dose-anti-thymocyte-globulin-as-standard-prophylaxis-in-mismatched-and-matched-unrelated-hematopoietic-peripheral-stem-cell-transplantation-for-hematologic-malignancies
#17
Ioanna Sakellari, Ioannis Batsis, Zoi Bousiou, Despina Mallouri, Varnavas Constantinou, Eleni Gavriilaki, Christos Smias, Evangelia Yannaki, Panayotis Kaloyannidis, Giorgos Papaioannou, Niki Stavroyianni, Antonia Syrigou, Damianos Sotiropoulos, Asimina Fylaktou, Aliki Tsompanakou, Riad Saloum, Achilles Anagnostopoulos
INTRODUCTION: Anti-thymocyte globulin (ATG)-based immunosuppressive therapy is often used in allogeneic hematopoietic cell transplantation to reduce incidence and severity of graft-versus-host disease (GVHD). PATIENTS AND METHODS: In our observational study, ATG (rabbit, Thymoglobulin; Sanofi, 5 mg/kg) was administered as a standardized part of the conditioning in 97 patients with a median age of 34 years (range, 14-58 years), allotransplanted for hematologic malignancies from matched (8/8; n = 52) and allele or antigen mismatched (7/8; n = 43 and 6/8; n = 2) unrelated donors...
June 29, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28716390/impact-of-cytokine-genetic-polymorphisms-on-the-risk-of-renal-parenchymal-infection-in-children
#18
Almontaser Hussein, Eman Askar, Ahlam Badawy, Khaled Saad, Asmaa Zahran, Ahmad A Elderwy
BACKGROUND: Acute pyelonephritis is associated with renal scarring in up to 30% of patients. Renal scarring may cause significant long-term morbidity. The pathogenesis of acute pyelonephritis remains unclear, although it involves interaction among uroepithelium, the immune system cells, and the locally produced cytokines. That some UTI-prone children develop acute pyelonephritis, and eventually renal parenchymal scarring, suggests a genetic role. Interleukin-6, interleukin-8, chemokine receptor-1 (CXCR1), and tumor necrosis factor-alpha (TNFα), the key regulators of the host immune responses, are proteins whose secretion is controlled by genes...
July 3, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28716143/the-factors-affecting-the-institutionalisation-of-two-policy-units-in-burkina-faso-s-health-system-a-case-study
#19
Andre Zida, John N Lavis, Nelson K Sewankambo, Bocar Kouyate, Kaelan Moat
BACKGROUND: This paper is one of three linked studies that attempts to understand the process of institutionalisation of policy units within Burkina Faso's health system. It examines the relationships between the existence of an institutional framework, data production capacity and other resource availability in the institutionalisation of policy units in health systems. It therefore contributes to our understanding of the dynamics linking the key drivers and indicators of institutionalisation...
July 17, 2017: Health Research Policy and Systems
https://www.readbyqxmd.com/read/28715856/nitrogen-deposition-changes-ectomycorrhizal-communities-in-swiss-beech-forests
#20
L C de Witte, N P Rosenstock, S van der Linde, S Braun
Atmospheric pollution has implications for the health and diversity of temperate forests covering large parts of central Europe. Long-term elevated anthropogenic deposition of nitrogen (N) is driving forest ecosystems from the limitation by N to other nutrients and is found to affect tree health and ectomycorrhizal fungi (EMF), which most trees depend on for nutrient uptake. However, the consequence of EMF community changes for trees remains unclear. Therefore, we investigated changes in EMF communities on root tips and in soil of beech forests along a N deposition gradient ranging between 16 and 33kgNha(-1)a(-1), where high N deposition was found to negatively affect tree growth and nutrient levels...
July 11, 2017: Science of the Total Environment
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