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https://www.readbyqxmd.com/read/28445957/peripheral-kynurenine-tryptophan-ratio-is-not-a-reliable-marker-of-systemic-indoleamine-2-3-dioxygenase-a-lesson-drawn-from-patients-on-hemodialysis
#1
Yuanhan Chen, Zhen Xie, Chenggen Xiao, Min Zhang, Zhilian Li, Jianteng Xie, Yusheng Zhang, Xingchen Zhao, Pengfei Zeng, Liyi Mo, Xinling Liang, Wei Shi
Indoleamine 2,3-dioxygenase (IDO) has emerged as a pivotal enzyme for mediating immune tolerance. Because IDO metabolizes tryptophan into kynurenine, the plasma kynurenine/tryptophan (Kyn/Trp) ratio has been widely used as a marker of systemic IDO. Here, we evaluated the clinical value of using the plasma Kyn/Trp ratio to estimate cell-mediated immune responses to tuberculin skin testing and risk of new bacterial infection. We also compared the Kyn/Trp ratio to a novel IDO marker, the IDO median fluorescence index (MFI) of peripheral blood mononuclear cells, which was determined by flow cytometry...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28445686/when-a-relationship-is-imperative-will-young-women-knowingly-place-their-sexual-health-at-risk-a-sample-of-african-american-adolescent-girls-in-the-juvenile-justice-system
#2
Jerris L Raiford, Puja Seth, Amy M Fasula, Ralph J DiClemente
Background: HIV and other sexually transmissible infections (HIV/STIs) are significant contributors to adolescent girls' morbidity in the US. Risks for HIV/STIs are increased among adolescent girls involved in the juvenile justice system, and African American adolescent girls comprise nearly 50% of adolescent girls in detention centres. Although HIV prevention programs focus on HIV/STI knowledge, increased knowledge may not be sufficient to reduce sexual risk. The present study examined the interactive effects of HIV/STI knowledge and the importance of being in a relationship (a relationship imperative) on sexual risk behaviours in a sample of detained African American adolescent girls...
April 27, 2017: Sexual Health
https://www.readbyqxmd.com/read/28445684/patient-staffing-and-health-centre-factors-associated-with-annual-testing-for-sexually-transmissible-infections-in-remote-primary-health-centres
#3
Belinda Hengel, Handan Wand, James Ward, Alice Rumbold, Linda Garton, Debbie Taylor-Thomson, Bronwyn Silver, Skye McGregor, Amalie Dyda, Jacqueline Mein, Janet Knox, Lisa Maher, John Kaldor, Rebecca Guy
Background: In high-incidence Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) settings, annual re-testing is an important public health strategy. Using baseline laboratory data (2009-10) from a cluster randomised trial in 67 remote Aboriginal communities, the extent of re-testing was determined, along with the associated patient, staffing and health centre factors. Methods: Annual testing was defined as re-testing in 9-15 months (guideline recommendation) and a broader time period of 5-15 months following an initial negative CT/NG test...
April 27, 2017: Sexual Health
https://www.readbyqxmd.com/read/28445538/gene-expression-patterns-associated-with-neurological-disease-in-human-hiv-infection
#4
Pietro Paolo Sanna, Vez Repunte-Canonigo, Eliezer Masliah, Celine Lefebvre
The pathogenesis and nosology of HIV-associated neurological disease (HAND) remain incompletely understood. Here, to provide new insight into the molecular events leading to neurocognitive impairments (NCI) in HIV infection, we analyzed pathway dysregulations in gene expression profiles of HIV-infected patients with or without NCI and HIV encephalitis (HIVE) and control subjects. The Gene Set Enrichment Analysis (GSEA) algorithm was used for pathway analyses in conjunction with the Molecular Signatures Database collection of canonical pathways (MSigDb)...
2017: PloS One
https://www.readbyqxmd.com/read/28445497/prostaglandin-e2-produced-following-infection-with-theiler-s-virus-promotes-the-pathogenesis-of-demyelinating-disease
#5
Seung Jae Kim, Young-Hee Jin, Byung S Kim
Infection of various cells with Theiler's murine encephalomyelitis virus (TMEV) activates the TLR- and melanoma differentiation-associated gene 5 (MDA5)-dependent pathways, resulting in the production of IL-1β via the activation of caspase-1 upon assembly of the node-like receptor protein 3 (NLRP3) inflammasome. The role of IL-1β in the pathogenesis of TMEV-induced demyelinating disease was previously investigated. However, the signaling effects of prostaglandin E2 (PGE2) downstream of the NLRP3 inflammasome on the immune responses to viral determinants and the pathogenesis of demyelinating disease are unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28445362/effect-of-human-fat-graft-on-breast-cancer-metastasis-in-a-murine-model
#6
Roberto Moltó-García, Virina González-Alonso, María Eloísa Villaverde-Doménech, Edurne Novella-Maestre
BACKGROUND: Isolated adipose stem cells have been reported to encourage migration and early metastasis of breast cancer. Mimicking a surgical situation, the authors developed a human breast cancer model to evaluate in vivo whether human adipose tissue promotes tumor growth and invasion. METHODS: Human adipose tissue was obtained from four patients. The MDA-MB-468 cell line was cultured with a lentiviral vector encoding a puromycin resistance gene and mCherry fluorescent protein...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28445264/incremental-cost-of-nosocomial-bacteremia-according-to-the-focus-of-infection-and-antibiotic-sensitivity-of-the-causative-microorganism-in-a-university-hospital
#7
Marta Riu, Pietro Chiarello, Roser Terradas, Maria Sala, Enric Garcia-Alzorriz, Xavier Castells, Santiago Grau, Francesc Cots
To estimate the incremental cost of nosocomial bacteremia according to the causative focus and classified by the antibiotic sensitivity of the microorganism.Patients admitted to Hospital del Mar in Barcelona from 2005 to 2012 were included. We analyzed the total hospital costs of patients with nosocomial bacteremia caused by microorganisms with a high prevalence and, often, with multidrug-resistance. A control group was defined by selecting patients without bacteremia in the same diagnosis-related group.Our hospital has a cost accounting system (full-costing) that uses activity-based criteria to estimate per-patient costs...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28445241/serum-neutrophil-gelatinase-associated-lipocalin-a-diagnostic-marker-in-pediatric-sepsis
#8
Nagwan Yossery Saleh, Wafaa Moustafa M Abo El Fotoh, Mahmoud A El-Hawy
OBJECTIVES: Sepsis is a life-threatening condition that arises when the response of the body to infection injures its own tissues and organs. The early prediction of sepsis by current clinical and laboratory methods remains inadequate. Serum neutrophil gelatinase-associated lipocalin level is increased in sepsis irrespective of renal dysfunction. Therefore, we aimed to correlate the serum neutrophil gelatinase-associated lipocalin value determined at admission with clinical progression and severity of disease in critically ill children and to declare its role as a potential diagnostic and prognostic marker for sepsis in critically ill children in the emergency department...
April 25, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28444888/bacteriophge-exclusion-brex-a-novel-anti-phage-mechanism-in-the-arsenal-of-bacterial-defense-system
#9
Kulbhushan Chaudhary
The arm race between bacteria and phages leads to the development of many phage resistance mechanisms. Bacteria are perpetually changing their strategy to avert phage infection and killing. Recently, a study published that shed light on a novel bacterial defense system called bacteriophge exclusion (BREX). BREX system is a six-gene cassette in Bacillus cereus which provides complete phage resistance to a broad range of phages, including lytic and temperate ones. It's a novel defense strategy which involves DNA methylation of the host cell and block phage DNA replication...
April 26, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28444759/dysregulated-cd46-shedding-interferes-with-th1-contraction-in-systemic-lupus-erythematosus
#10
Ursula Ellinghaus, Andrea Cortini, Christopher L Pinder, Gaelle Le Friec, Claudia Kemper, Timothy J Vyse
IFN-γ-producing T helper 1 (Th1) cell responses mediate protection against infections but uncontrolled Th1 activity also contributes to a broad range of autoimmune diseases. Autocrine complement activation has recently emerged as key in the induction and contraction of human Th1 immunity: Activation of the complement regulator CD46 and the C3aR expressed by CD4(+) T cells via autocrine generated ligands C3b and C3a, respectively, are critical to IFN-γ production. Further, CD46-mediated signals also induce co-expression of immunosuppressive IL-10 in Th1 cells and transition into a (self)-regulating and contracting phase...
April 26, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28444407/-aseptic-loosening-of-total-ankle-replacement-and-conversion-to-ankle-arthrodesis
#11
M D Wimmer, M Hettchen, M M Ploeger, B Hintermann, D C Wirtz, A Barg
OBJECTIVE: To remove loosened prosthesis components, to perform augmentation, to address osseous defects, to perform neutrally aligned ankle arthrodesis, and to achieve postoperative pain relief. INDICATIONS: Symptomatic, aseptic loosening of total ankle replacement (TAR) with/without substantial bone defect of the tibial and/or talar bone stock. CONTRAINDICATIONS: General surgical or anesthesiological risks, periprosthetic infection, local or systemic infection, nonmanageable soft tissue problems...
April 25, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28444097/chronic-polyarthritis-as-the-first-manifestation-of-childhood-systemic-polyarteritis-nodosa
#12
Glaucia Vanessa Novak, Koken Hayashi, Kohei Sampa, Yosuke Okumura, Gabriela Ribeiro Viola Ferreira, Clovis Artur Silva
Arthritis has been reported as an acute pattern, generally evanescent with oligoarthritis, mostly affecting knees and ankles in childhood systemic polyarteritis nodosa. However, chronic polyarthritis with morning stiffness mimicking juvenile idiopathic arthritis has not been reported. We describe the case of a 4-year old girl who had additive and chronic polyarthritis with edema, tenderness, pain on motion and morning stiffness for 2 months. After 45 days, she also presented painful subcutaneous nodules and erythematous-violaceous lesions in the extensor region of upper and lower limbs...
January 2017: Einstein
https://www.readbyqxmd.com/read/28443985/zika-puzzle-in-brazil-peculiar-conditions-of-viral-introduction-and-dissemination-a-review
#13
Cristina Possas, Patricia Brasil, Mauro Ca Marzochi, Amilcar Tanuri, Reinaldo M Martins, Ernesto Ta Marques, Myrna C Bonaldo, Antonio Gp Ferreira, Ricardo Lourenço-de-Oliveira, Rita Maria R Nogueira, Patricia C Sequeira, Keyla Bf Marzochi, Akira Homma
This article discusses the peculiar conditions that favoured the unexpected introduction of Zika virus into the poorest northeastern region of Brazil in 2015, its speed of transmission to other Brazilian states, other Latin American countries and other regions, and the severity of related neurological disorders in newborns and adults. Contrasting with evidence that Zika had so far caused only mild cases in humans in the last six decades, the epidemiological scenario of this outbreak in Brazil indicates dramatic health effects: in 2015, an increase of 20-fold in notified cases of microcephaly and/or central nervous system (CNS) alterations suggestive of Zika congenital infection, followed by an exponential increase in 2016, with 2366 cumulative cases confirmed in the country by the end of December 2016...
May 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28443513/the-gastrointestinal-dysmotility-and-infections-in-systemic-sclerosis-a-real-world-scenario
#14
Shefali Khanna Sharma, M B Adarsh, Saroj K Sinha, Anish Bhattacharya, Satyavati Rana, Surjit Singh, Varun Dhir
INTRODUCTION: Systemic Sclerosis is known to involve the gastrointestinal system and can lead to multitude of problems predominantly affecting the GI motility. METHODS: It was a prospective, observational, single centre study of fifty consecutive patients with SSc who presented to rheumatology clinic. Gut score was assessed using UCLA SCTC GIT 2.0 questionnaire. 35 patients underwent esophago- gastro duodenoscopy(UGIE), 31 underwent esophageal manometry, 37 underwent lactulose breath test to assess orocaecal transit time (OCTT) and glucose breath test for detecting small intestinal bacterial overgrowth (SIBO) and 36 underwent gastric emptying scintigraphy to measure gastric emptying time...
April 25, 2017: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/28443289/frequency-and-duration-of-fecal-shedding-of-salmonella-enteritidis-by-experimentally-infected-laying-hens-housed-in-enriched-colony-cages-at-different-stocking-densities
#15
Richard K Gast, Rupa Guraya, Deana R Jones, Kenneth E Anderson, Darrin M Karcher
Human infections with Salmonella Enteritidis are often attributed to the consumption of contaminated eggs, so the prevalence of this pathogen in egg-laying poultry is an important public health risk factor. Numerous and complex environmental influences on Salmonella persistence and transmission are exerted by management practices and housing facilities used in commercial egg production. In recent years, the animal welfare implications of poultry housing systems have guided the development of alternatives to traditional cage-based housing, but their food safety consequences are not yet fully understood...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28443246/genetic-and-dietary-iron-overload-differentially-affect-the-course-of-salmonella-typhimurium-infection
#16
Manfred Nairz, Andrea Schroll, David Haschka, Stefanie Dichtl, Piotr Tymoszuk, Egon Demetz, Patrizia Moser, Hubertus Haas, Ferric C Fang, Igor Theurl, Günter Weiss
Genetic and dietary forms of iron overload have distinctive clinical and pathophysiological features. HFE-associated hereditary hemochromatosis is characterized by overwhelming intestinal iron absorption, parenchymal iron deposition, and macrophage iron depletion. In contrast, excessive dietary iron intake results in iron deposition in macrophages. However, the functional consequences of genetic and dietary iron overload for the control of microbes are incompletely understood. Using Hfe(+/+) and Hfe(-/-) mice in combination with oral iron overload in a model of Salmonella enterica serovar Typhimurium infection, we found animals of either genotype to induce hepcidin antimicrobial peptide expression and hypoferremia following systemic infection in an Hfe-independent manner...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28443098/the-lysine-methyltransferase-g9a-in-immune-cell-differentiation-and-function
#17
REVIEW
Sebastian Scheer, Colby Zaph
G9a (KMT1C, EHMT2) is a lysine methyltransferase (KMT) whose primary function is to di-methylate lysine 9 of histone H3 (H3K9me2). G9a-dependent H3K9me2 is associated with gene silencing and acts primarily through the recruitment of H3K9me2-binding proteins that prevent transcriptional activation. Gene repression via G9a-dependent H3K9me2 is critically required in embryonic stem (ES) cells for the development of cellular lineages by repressing expression of pluripotency factors. In the immune system, lymphoid cells such as T cells and innate lymphoid cells (ILCs) can differentiate from a naïve state into one of several effector lineages that require both activating and repressive mechanisms to maintain the correct gene expression program...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28443092/disarming-cellular-alarm-systems-manipulation-of-stress-induced-nkg2d-ligands-by-human-herpesviruses
#18
REVIEW
Dominik Schmiedel, Ofer Mandelboim
The coevolution of viruses and their hosts led to the repeated emergence of cellular alert signals and viral strategies to counteract them. The herpesvirus family of viruses displays the most sophisticated repertoire of immune escape mechanisms enabling infected cells to evade immune recognition and thereby maintain infection. The herpesvirus family consists of nine viruses that are capable of infecting humans: herpes simplex virus 1 and 2 (HSV-1, HSV-2), varicella zoster virus (VZV), Epstein-Barr virus (EBV), human cytomegalovirus (HCMV), roseoloviruses (HHV-6A, HHV-6B, and HHV-7), and Kaposi's-sarcoma-associated herpesvirus (KSHV)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28443083/intracellular-localization-interactions-and-functions-of-capsicum-chlorosis-virus-proteins
#19
Shirani M K Widana Gamage, Ralf G Dietzgen
Tospoviruses are among the most devastating viruses of horticultural and field crops. Capsicum chlorosis virus (CaCV) has emerged as an important pathogen of capsicum and tomato in Australia and South-east Asia. Present knowledge about CaCV protein functions in host cells is lacking. We determined intracellular localization and interactions of CaCV proteins by live plant cell imaging to gain insight into the associations of viral proteins during infection. Proteins were transiently expressed as fusions to autofluorescent proteins in leaf epidermal cells of Nicotiana benthamiana and capsicum...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28442852/perioperative-systemic-glucocorticoids-in-total-hip-and-knee-arthroplasty-a-systematic-review-of-outcomes
#20
REVIEW
Jeffrey Hartman, Vickas Khanna, Anthony Habib, Forough Farrokhyar, Muzammil Memon, Anthony Adili
BACKGROUND: Perioperative systemic glucocorticoids are frequently included in multimodal analgesia and antiemetic regimens administered to patients undergoing total hip arthroplasty (THA) and total knee arthroplasty (TKA). The objective of this systematic review was to evaluate the available randomized controlled trials (RCTs) to determine the effect of perioperative systemic glucocorticoids on postoperative nausea and vomiting (PONV), pain, narcotic consumption, antiemetic consumption, length of stay in hospital, and major complications in patients undergoing elective THA or TKA...
June 2017: Journal of Orthopaedics
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