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Emilie M Flament, Keith R Berend, Jason M Hurst, Michael J Morris, Joanne B Adams, Adolph V Lombardi
BACKGROUND: In past decades, polyethylene wear was a major cause of failure in total knee arthroplasty (TKA). Polyethylene for use in arthroplasty has been vastly improved in recent years, with improved materials as well as manufacturing and sterilization processes. Testing has shown that infusion of vitamin E prevents oxidative degradation of polyethylene without remelting, allowing the material to maintain mechanical properties and wear resistance over time. The purpose of this study is to review the early result of patients undergoing primary TKA with vitamin E antioxidant-infused polyethylene inserts...
October 26, 2016: Surgical Technology International
Sandra Aissou, Victoire Cartier, Antoine Hamy, Fleur Plumereau, Christophe Aube, Emilie Lermite
BACKGROUND: Liver resection is the curative treatment for patients with colorectal liver metastases (CRLMs), with five-year survival rates of 30-50%. Radiofrequency ablation (RFA) is a local and useful alternative for patients with non-resectable CRLMs to obtain complete tumor clearance. The aim of this study was to analyze survival rates with this local treatment. MATERIALS AND METHODS: All patients who underwent RFA and resection or RFA alone for unresectable CRLMs between 2001 and 2012 were included in a retrospective study...
October 26, 2016: Surgical Technology International
Tathyana Mar Amorim Franco, Subray S Hegde, John S Blanchard
The biosynthetic pathway of the branched-chain amino acids is essential for M. tuberculosis growth and survival. We report here the kinetic and chemical mechanism of the pyridoxal 5'-phosphate (PLP)-dependent branched-chain aminotransferase, IlvE, from M. tuberculosis (MtIlvE). This enzyme is responsible for the final step of the synthesis of the branched-chain amino acids isoleucine, leucine and valine. As seen in other aminotransferases, MtIlvE displays a ping-pong kinetic mechanism. pK values were identified from the pH dependence on V as well as V/K, indicating that the phosphate ester of the PLP cofactor, as well as the α-amino group from L-glutamate and the active site Lys204, play roles in acid-base catalysis and binding, respectively...
October 25, 2016: Biochemistry
Kyung-Ju Kim, Hee Jung Kwon, Min Chong Kim, Young Kyung Bae
Background: CD9, a member of the tetraspanin superfamily, is a tumor suppressor in many malignancies. The aim of this study was to evaluate the immunohistochemical expression of CD9 in colorectal carcinomas (CRCs) and determine clinicopathological and prognostic significance of its expression. Materials and Methods: The CD9 expression status of 305 CRCs was evaluated using a semi-quantitative scoring system in tumor cells (T-CD9) and immune cells (I-CD9) by classifying the results as high and low expression...
October 25, 2016: Journal of Pathology and Translational Medicine
Marianne Goodman, David Banthin, Nicholas J Blair, Kathryn A Mascitelli, Jaime Wilsnack, Jennifer Chen, Julie W Messenger, M Mercedes Perez-Rodriguez, Joseph Triebwasser, Harold W Koenigsberg, Raymond R Goetz, Erin A Hazlett, Antonia S New
OBJECTIVE: Despite advances in suicide prevention implemented throughout the US Department of Veterans Affairs (VA) including the hiring of Suicide Prevention Coordinators (SPCs) at every VA hospital, enhanced monitoring, and the availability of 24-hour crisis hotline services, suicide by veterans remains a critical problem affecting 20 veterans daily. Few empirically based treatment strategies for suicide prevention for postdeployment military personnel exist. This study aimed to test whether dialectical behavior therapy (DBT), one of the few psychosocial treatments with proven efficacy in diminishing suicidal behavior in individuals with personality disorder, can be applied to veterans irrespective of personality diagnosis...
October 25, 2016: Journal of Clinical Psychiatry
Daniel W Bradford, Joseph Goulet, Marcia Hunt, Natasha C Cunningham, Rani Hoff
OBJECTIVE: Individuals with serious mental illness have increased mortality relative to those without these illnesses. Although cancer is a leading cause of death, few studies have evaluated potential disparities relative to mortality for individuals with serious mental illness who are diagnosed with cancer. In this study, we evaluated mortality after diagnosis of a common malignancy (lung cancer) in a prototypical serious mental illness (schizophrenia). METHODS: Using administrative data in the Veterans Affairs system, we identified 34,664 individuals who were diagnosed with lung cancer between October 1, 2001, and September 30, 2005...
October 25, 2016: Journal of Clinical Psychiatry
Richard J Cassidy, Yuan Liu, Kirtesh Patel, Jim Zhong, Conor E Steuer, David A Kooby, Maria C Russell, Theresa W Gillespie, Jerome C Landry
BACKGROUND: Stage II and III rectal cancers have been effectively treated with neoadjuvant chemoradiotherapy (NCRT) followed by definitive resection. Advancements in surgical technique and systemic therapy have prompted investigation of neoadjuvant multiagent chemotherapy (NMAC) regimens with the elimination of radiation (RT). The objective of the current study was to investigate factors that predict for the use of NCRT versus NMAC and compare outcomes using the National Cancer Data Base (NCDB) for select stage II and III rectal cancers...
October 25, 2016: Cancer
Rui Santos, Catarina Costa, Dalila Mil-Homens, Daniela Romão, Carla C C R de Carvalho, Pedro Pais, Nuno P Mira, Arsénio M Fialho, Miguel C Teixeira
The mechanisms of persistence and virulence associated to Candida glabrata infections are poorly understood, limiting the ability to fight this fungal pathogen. In this study, the multidrug resistance transporters CgTpo1_1 and CgTpo1_2 are shown to play a role in C. glabrata virulence. The survival of the infection model Galleria mellonella, infected with C. glabrata, was found to increase upon the deletion of either CgTPO1_1 or CgTPO1_2. The underlying mechanisms were further explored. In the case of CgTpo1_1, this phenotype was found to be consistent with the observation that it confers resistance to antimicrobial peptides (AMP), such as the human AMP histatin-5...
October 25, 2016: Cellular Microbiology
Ruža Grizelj, Katarina Bojanić, Jurica Vuković, Milivoj Novak, Toby N Weingarten, Darrell R Schroeder, Juraj Sprung
Objective The objective of this study was to investigate the prognostic value of a hernia sac in isolated congenital diaphragmatic hernia (CDH) with intrathoracic liver herniation ("liver-up"). Study Design A retrospective study from the single tertiary center. Isolated "liver-up" CDH neonates referred to our institution between 2000 and 2015 were reviewed for the presence or absence of a hernia sac. Association between the presence of a hernia sac and survival was assessed. Results Over the study period, there were 29 isolated CDH patients with "liver-up" who were treated, 7 (24%) had a sac, and 22 (76%) did not...
October 25, 2016: American Journal of Perinatology
Núria Rovira-Graells, Sara Aguilera-Simón, Elisabet Tintó-Font, Alfred Cortés
The growth phenotype of asexual blood stage malaria parasites can influence their virulence and also their ability to survive and achieve transmission to the next host, but there are few methods available to characterise parasite growth parameters in detail. We developed a new assay to measure growth rates at different starting parasitaemias in a 96-well format and applied it to characterise the growth of Plasmodium falciparum lines 3D7-A and 3D7-B, previously shown to have different invasion rates and to use different invasion pathways...
2016: PloS One
Wenying Liao, Duncan N L Menge
Symbiotic nitrogen (N) fixation is the major N input to many ecosystems. Although temperate forests are commonly N limited, symbiotic N-fixing trees ("N fixers") are rare and decline in abundance as succession proceeds-a challenging paradox that remains unexplained. Understanding demographic processes that underlie N fixers' rarity and successional decline would provide a proximate answer to the paradox. Do N fixers grow slower, die more frequently, or recruit less in temperate forests? We quantified demographic rates of N-fixing and non-fixing trees across succession using U...
2016: PloS One
Anne Argenta, Latha Satish, Phillip Gallo, Fang Liu, Sandeep Kathju
OBJECTIVE: To determine if local prophylactic application of probiotic bacteria to burn wounds will prevent death in a mouse model of burn wound sepsis. BACKGROUND: Infection remains the most common complication after burn injury and can result in sepsis and death, despite the use of topical and systemic antibiotics. Pseudomonas aeruginosa is a frequently implicated pathogen. Local application of probiotics directly to burn wounds is an attractive novel intervention that avoids the pitfalls of standard antibiotic therapies...
2016: PloS One
Shuo Zhang, Xuelei Ma, Chenjing Zhu, Li Liu, Guoping Wang, Xia Yuan
Targeting immune cells or factors are effective for patients with solid tumors. Myeloid-derived suppressor cells (MDSCs) are known to have immunosuppressive functions, and the levels of MDSCs in patients with solid tumor are assumed to have prognostic values. This meta-analysis aimed at evaluating the relationship between MDSCs and the prognosis of patients with solid tumors. We searched articles in PUBMED and EMBASE comprehensively, updated to March 2016. Eight studies with 442 patients were included in the meta-analysis...
2016: PloS One
Paula Ribeiro Prist, Maria Uriarte, Leandro Reverberi Tambosi, Amanda Prado, Renata Pardini, Paulo Sérgio D Andrea, Jean Paul Metzger
Hantavirus Pulmonary Syndrome (HPS) is a disease caused by Hantavirus, which are negative-sense RNA viruses in the family Bunyaviridae that are highly virulent to humans. Numerous factors modify risk of Hantavirus transmission and consequent HPS risk. Human-driven landscape change can foster transmission risk by increasing numbers of habitat generalist rodent species that serve as the principal reservoir host. Climate can also affect rodent population dynamics and Hantavirus survival, and a number of social factors can influence probability of HPS transmission to humans...
2016: PloS One
Elizabeth A Simonik, Ying Cai, Katherine N Kimmelshue, Dana M Brantley-Sieders, Holli A Loomans, Claudia D Andl, Grant M Westlake, Victoria M Youngblood, Jin Chen, Wendell G Yarbrough, Brandee T Brown, Lalitha Nagarajan, Stephen J Brandt
Squamous cell carcinoma of the head and neck (HNSCC) accounts for more than 300,000 deaths worldwide per year as a consequence of tumor cell invasion of adjacent structures or metastasis. LIM-only protein 4 (LMO4) and LIM-domain binding protein 1 (LDB1), two directly interacting transcriptional adaptors that have important roles in normal epithelial cell differentiation, have been associated with increased metastasis, decreased differentiation, and shortened survival in carcinoma of the breast. Here, we implicate two LDB1-binding proteins, single-stranded binding protein 2 (SSBP2) and 3 (SSBP3), in controlling LMO4 and LDB1 protein abundance in HNSCC and in regulating specific tumor cell functions in this disease...
2016: PloS One
Ramnath Subbaraman, Ruvandhi R Nathavitharana, Srinath Satyanarayana, Madhukar Pai, Beena E Thomas, Vineet K Chadha, Kiran Rade, Soumya Swaminathan, Kenneth H Mayer
BACKGROUND: India has 23% of the global burden of active tuberculosis (TB) patients and 27% of the world's "missing" patients, which includes those who may not have received effective TB care and could potentially spread TB to others. The "cascade of care" is a useful model for visualizing deficiencies in case detection and retention in care, in order to prioritize interventions. METHODS AND FINDINGS: The care cascade constructed in this paper focuses on the Revised National TB Control Programme (RNTCP), which treats about half of India's TB patients...
October 2016: PLoS Medicine
Chiung-Ying Huang, Szu-Ying Lee, Chung-Wei Yang, Szu-Chun Hung, Chih-Kang Chiang, Jenq-Wen Huang, Kuan-Yu Hung
BACKGROUND: Low lean body mass (LBM) is an indicator of malnutrition inflammation syndrome, which is common in hemodialysis (HD) patients. The creatinine index (CI) has been validated as a reliable method to estimate LBM and evaluate the protein-energy status of HD patients. However, the traditional creatinine index formula was complex. We sought to investigate the impact of CI derived from a new simple formula on Chinese HD patient outcomes. METHODS: In this retrospective cohort study, we enrolled 1269 patients who initiated HD between February 1981 and February 2012 and followed them until the end of February 2013...
2016: PloS One
Shi-Peng Chen, Chih-Hsien Kuo, Hsueh-Han Lu, Hui-Shan Lo, Kai-Wun Yeh
IbNAC1 is known to activate the defense system by reprogramming a genetic network against herbivory in sweet potato. This regulatory activity elevates plant defense potential but relatively weakens plants by IbNAC1-mediated JA response. The mechanism controlling IbNAC1 expression to balance plant vitality and survival remains unclear. In this study, a wound-responsive G-box cis-element in the IbNAC1 promoter from -1484 to -1479 bp was identified. From a screen of wound-activated transcriptomic data, one transcriptional activator, IbbHLH3, and one repressor, IbbHLH4, were selected that bind to and activate or repress, respectively, the G-box motif in the IbNAC1 promoter to modulate the IbNAC1-mediated response...
October 2016: PLoS Genetics
Henrik Møller, Katherine Henson, Margreet Lüchtenborg, John Broggio, Jackie Charman, Victoria H Coupland, Elizabeth Davies, Ruth H Jack, Richard Sullivan, Peter Vedsted, Kieran Horgan, Neil Pearce, Arnie Purushotham
BACKGROUND: In the re-organisation of cancer registration in England in 2012, a high priority was given to the recording of cancer stage and other prognostic clinical data items. METHODS: We extracted 86 852 breast cancer records for women resident in England and diagnosed during 2012-2013. Information on age, ethnicity, socio-economic status, comorbidity, tumour stage, grade, morphology and oestrogen, progesterone and HER2 receptor status was included. The two-year cumulative risk of death from any cause was estimated with the Kaplan-Meier method, and univariate and multivariate Cox proportional hazards regressions were used to estimate hazard ratios (HR) and their 95% confidence intervals (95% CI)...
October 25, 2016: British Journal of Cancer
Michael B Cook, Jennifer Drahos, Shannon Wood, Lindsey Enewold, Ruth Parsons, Neal D Freedman, Philip R Taylor, Winnie Ricker, Christian C Abnet
BACKGROUND: The absolute risk of oesophageal adenocarcinoma (EA) among individuals with Barrett's oesophagus (BE) is low and a majority of EA cases are diagnosed among individuals with no prior BE diagnosis. To ensure that insights from EA case-control studies are transferable to clinical management of BE populations, we conducted a case-case study to compare the clinical presentation, medical history and survival of EA cases with and without a prior BE diagnosis in the Surveillance, Epidemiology and End Results Medicare database...
October 25, 2016: British Journal of Cancer
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